dust container, powder feeding device and image forming apparatus

专利摘要:
POWDER CONTAINER, POWDER FEEDING DEVICE AND IMAGE FORMATING APPLIANCE. A powder container is provided having a new structure capable of stable transport and discharge of a powder contained in a container allowing the powder to be reliably discharged outside the package while preventing the powder from spreading and flying out of the container. The powder container has a container body (138) for transporting the powder contained therein from a first end side (138a) to a second end side (138b) of it by self-rotation; a nozzle receiver (139) having an orifice that receives the nozzle (insertion section) (139a) arranged within the second end side of the container body and configured to allow a transport nozzle (162) to have a receiving inlet of the powder (170) is inserted into it, and a feed port 139b arranged in at least part of the nozzle receiver (139) and configured to supply the powder in the container body (138) to the powder receiving inlet (170 ): and a plug (140) supported by the nozzle receiver 139 and configured to open and close the orifice that receives the nozzle (insertion section) 139a through (...).
公开号:BR112013013698B1
申请号:R112013013698-7
申请日:2011-12-02
公开日:2020-12-29
发明作者:Junichi Matsumoto；Tsukuru Kai；Hiroshi Horokawa；Makoto Komatsu；Tadashi Hadakawa；Yuzuru Ozawa
申请人:Ricoh Company, Ltd；
IPC主号:

专利说明:

[Description]
[0001] This application is based on and claims the priority benefit of each of Japanese Patent Applications Nos. 2010-270370, filed on December 3, 2010 and 2011-197303, filed on September 9, 2011, the disclosure of which is hereby incorporated by reference in its entirety. [Technical Field]
[0002] The present invention relates to a powder container for containing a developer which is a powder to be used in an image forming apparatus such as a printer, a fax machine, a copy machine, or a machine multifunctional equipped with multiple functions, and a powder feeding device and an image forming device that includes the dust container. [Background of the technique]
[0003] In an imaging device in which a developing device using powdered toner visualizes an electrostatic latent image formed in an image carrier, the toner in the developing device is consumed with the formation of images. Thus, conventionally, an imaging device is known which includes a toner feeding device that includes a toner container as a powder container containing a toner, and configured to provide the developing device with the toner contained in the container. of toner.
[0004] In a toner feed device configured like this, an opening formed at one end of the toner container is closed by a plug member to prevent toner in the toner container from spreading out during storage or transportation, and the plug member is removed when the toner feed device is mounted to a main body of an imaging device. Such a toner container, and a toner feeding device and an imaging device which includes the toner container are disclosed in Patent Document 1, for example. [Summary of the Invention] [Technical problem]
[0005] A toner container is replaced with a new one when the toner in the toner container is used. In the case of a toner container having a plug member, once the plug member is removed, the toner that remains in the toner container may spread or come out of the opening during replacement. In addition, since a toner container is longer in an axis line direction, a preferable and ideal storage condition for the toner container is that the toner container is stored with its axis line positioned horizontally. In contrast, if the toner container is stored in an upright state with the opening facing downward, the toner will stick together due to its own weight around the opening. This phenomenon blocks the discharge of toner from the toner container fitted to a main device body and easily causes unstable toner discharge or transport. Thus, there is a need for a new structure.
[0006] An objective of the present invention is to provide a powder container having a new structure capable of stable transport and discharge of a powder contained in a container allowing the powder to be reliably discharged outside the package while preventing the dust from spreading. and fly out of the container, and also to provide a powder feeding device and an imaging device.
[0007] [Solution to the Problem]
[0008] To achieve the above objective, a powder container configured to contain powder to be used in an imaging apparatus, in accordance with an embodiment of the present invention includes a container body configured to carry powder contained therein from the first end side to a second end side of it by self-rotation, a nozzle receiver having an orifice receiving the nozzle arranged on the side of the second end of the container body and configured to allow a transport nozzle having an inlet receiving port powder to be inserted into it, and a feed port arranged in at least part of the nozzle receiver and configured to supply the powder in the container body to the powder receiving inlet, and a shutter supported by the nozzle receiver and configured to open and close the hole that receives the nozzle by sliding in response to insertion of the transport nozzle into the nozzle receiver.
[0009] [Advantageous Effects of the Invention]
[0010] According to the present invention, as a powder container it includes: a nozzle receiver having an orifice that receives the nozzle arranged on the side of the second end of a container body and configured to allow a transport nozzle having an inlet receiving the powder to be inserted into it, and a feed port arranged in at least a part of the nozzle receiver and configured to supply the powder in the container body for the reception of powder reception; and a plug supported by the nozzle receiver and configured to open and close the orifice that receives the nozzle by sliding in response to an insertion of the transport nozzle into the nozzle receiver. The orifice that receives the nozzle is closed until the transport nozzle is inserted, and any dust accumulated near the feed port is pushed away when the plug slides. Consequently, a space is secured around the feed port, which allows reliable powder feed from the feed port to the powder receiving inlet. Thus, the powder container is able to reliably discharge the powder contained in the container to the outside of the container while preventing the dust from spreading and flying out of the container. [Brief Description of Drawings]
[0011] FIG. 1A is an exploded perspective view showing an embodiment of a powder container in accordance with the present invention.
[0012] FIG. 1B is an exploded perspective view showing another embodiment of a powder container according to the present invention.
[0013] FIG. 2 is a configuration diagram of an image forming apparatus according to the present invention.
[0014] FIG. 3 is an enlarged view showing an embodiment of an imaging section as the imaging apparatus as shown in FIG. 2includes.
[0015] FIG. 4 is a partial sectional view showing a configuration of a powder feeding device that includes the powder container shown in FIG. 1A.
[0016] FIG. 5 is a perspective view showing an overall configuration of the powder container according to the present invention and showing that it is connected with a developing device.
[0017] FIG. 6 is a sectional view showing that a transport nozzle that the powder feeding device shown in FIG. 4 includes is attached to the dust container.
[0018] FIG. 7 is a sectional view showing that the transport nozzle that the powder feeding device includes is attached to the powder container shown in FIG. 1B.
[0019] FIG. 8 is a cross-sectional view showing that the powder container is attached to the transport nozzle.
[0020] FIG. 9A is a view showing a positional relationship of a feed port and a lifting section when the powder container shown in FIG. 1A is rotated.
[0021] FIG. 9B is a view showing that the feed port which moves as a result of rotation of the powder container is poorly aligned with a position of a powder receiving inlet.
[0022] FIG. 10A is a view showing a positional relationship of the feed port, the powder receiving inlet, and the lifting section when the powder container shown in FIG. 1B is rotated.
[0023] FIG. 10B is a view showing that a toner is supplied to the feed port and the powder receiving inlet when the powder container is turned.
[0024] FIG. 11A is a front view showing a configuration of a loosening member shaped into a ring.
[0025] FIG. 11B is a side view of FIG. 11A.
[0026] FIG. 12A is a sectional view showing that the ring-shaped loosening member is integrated with a plug.
[0027] FIG. 12B is a side cross-sectional view of FIG. 12A.
[0028] FIG. 13 is a partial cross-sectional view showing a configuration of a powder feeding device that includes a powder container according to the present invention which has a loosening member.
[0029] FIG. 14 is a cross-sectional view showing that the transport nozzle that the powder feeding device shown in FIG. 13 includes is attached to the dust container.
[0030] FIG. 15A is a front view showing an embodiment of a loosening member having a plurality of openings.
[0031] FIG. 15B is a side cross-sectional view of FIG. 15A.
[0032] FIG. 16A is a front view showing an embodiment of a loosening member formed from a reed member.
[0033] FIG. 16B is a side cross-sectional view of FIG. 16A.
[0034] FIG. 17A is a cross-sectional view showing an embodiment in which a loosening member is configured by a pin which supports a plug for a nozzle receiver.
[0035] FIG. 17B is a cross-sectional view showing a modality in which the loosening member is configured by a pin provided in the plug.
[0036] FIG. 18 is an exploded perspective view showing an embodiment of a powder container in accordance with the present invention.
[0037] FIG. 19 is a partial section view showing a configuration of a powder feeding device that includes the powder container shown in FIG. 18.
[0038] FIG. 20 is a cross-sectional view showing that a transport nozzle that the powder feeding device includes is attached to the powder container.
[0039] FIG. 21A is a view showing a positional relationship of a feed port, a powder receiving inlet, and a lifting section when the powder container is rotated.
[0040] FIG. 21B is a view showing that a toner is supplied to the feed port and the powder receiving inlet when the powder container is turned.
[0041] FIG. 22A is a perspective view showing a schematic configuration of a powder container that includes a nozzle receiver having an inclined surface.
[0042] FIG. 22B is a perspective view showing that a transport nozzle corresponds with the orifice that the nozzle receives when the nozzle receiver is rotated.
[0043] FIG. 22C is a perspective view showing that the transport nozzle enters the orifice that receives the nozzle from the condition in which the transport nozzle corresponds with the orifice that receives the nozzle.
[0044] FIG. 23 is a perspective view showing a configuration of a nozzle receiver having a dust holding section.
[0045] FIG. 24 is a cross-sectional view showing that a transport nozzle that a powder feeding device includes is attached to a powder container that includes a nozzle receiver having a dust holding section.
[0046] FIG. 25A is a partial cross-sectional view showing a configuration of a powder feeding device having a loosening member.
[0047] FIG. 25B is a side cross-sectional view of FIG. 25A.
[0048] FIG. 26 is a cross-sectional view showing that a transport nozzle that a powder feeding device includes is attached to a powder container having a loosening member. [Description of Modalities]
[0049] The modalities of the present invention will be described hereinafter with reference to the drawings. In the modalities and modifications, constitutional elements such as members or components, which have the same shape or function, are designated the same symbol as long as they can be distinguished, and any overlapping description of it will be omitted. (First modality)
[0050] First, an overall operation and configuration of an image forming apparatus according to the present invention will be described. As shown in FIG. 2, four toner containers 38Y, 38M, 38C, 38K, which are dust containers for the respective colors (yellow, magenta, cyan, black), are installed in a detachable way (can be replaced) installed in a housing section toner container 31 which is located on the upper side of a body 100 of an imaging apparatus and serves as a dust container housing section. An intermediate transfer unit 15 is arranged below the toner container housing section 31. Below an intermediate transfer belt 8 included in the intermediate transfer unit 15, 6Y, 6M, 6C, 6K imaging sections for the respective colors (yellow, magenta, cyan, black) are positioned opposite the intermediate transfer belt 8 and arranged in a belt travel direction. Here, in the modalities, the members for the respective colors (yellow, magenta, cyan, black) are distinguished by the symbols designating (Y, M, C, B).
[0051] The 38Y, 38M, 38C, 38K toner containers contain powder toners of the respective colors. When the 38Y, 38M, 38C, 38K toner containers are attached to the toner container housing section 31, 160Y, 160M, 160C, 160K toner feeding devices, which are powder feeding devices that face the inside of the toner container housing section 31, feeding (replenishing) the color toners to the developing devices in the image forming sections 6Y, 6M, 6C, 6K, respectively.
[0052] In this modality, as the image formation sections, the toner containers, and the toner feeding device have approximately the same configuration except for the toner colors, a representative configuration of each one will be described hereinafter.
[0053] As shown in FIG. 3, the 6Y imaging section for yellow is configured as a process cartridge that includes a 1Y photoconductive drum that serves as an image carrier, as well as an electrically charged 4Y section, a 5Y developing device (developing section) , a 2Y cleaning section, a de-electrification section and the like, which are arranged around the photoconductive drum 1Y, and made detachably attachable to the body 100 of the image forming apparatus (see FIG. 2). Then, an image formation process (electric charging step, exposure step, developing step, transfer step, and cleaning step) is performed to form a yellow image on the 1Y photoconductive drum.
[0054] In addition, three other 6M, 6C, 6K imaging sections also have an almost identical configuration as the 6Y imaging section which corresponds to yellow, except that a toner color to be used is different, and forms images that match the respective toner colors.
[0055] In FIG. 3, the photoconductive drum 1Y is rotationally driven by a drive motor in the clockwise direction shown by the arrow in FIG. 3, and a surface of the photoconductive drum 1Y is evenly charged in a position of the electrically charged section 4Y (Electric charging step).
[0056] Then, on the surface of the photoconductive drum 1Y, the laser beam L emitted from an exposure device 7 (see FIG. 2) reaches an irradiation position where as a result of the exposure scanning, an electrostatic latent image that corresponds to yellow is formed (Exposure stage). The surface of the 1Y photoconductive drum reaches an opposite position (development area) for the 5Y development device, an electrostatic imaging in this position is developed, and a yellow toner image is formed (Development step).
[0057] The surface of the photoconductive drum 1Y after developing reaches an opposite position to the intermediate transfer belt 8 and a primary transfer polarization roller 9Y where the toner image in the photoconductive drum 1Y is transferred to the intermediate transfer belt 8 ( Primary transfer step). So, non-transferred toner still remains, albeit only slightly, in the 1Y photoconductive drum.
[0058] The surface of the photoconductive drum 1Y after the primary transfer reaches an opposite position to a cleaning device 2, where the non-transferred toner that remains in the photoconductive drum 1Y is collected mechanically by a cleaning blade 2a (Cleaning step). The surface of the photoconductive drum 1Y reaches an opposite position to the de-electrification section, where any potential remaining in the photoconductive drum 1Y is removed. Now, a series of the image formation process carried out on the photoconductive drum 1Y ends.
[0059] In addition, the imaging process described above is similarly performed for the 6Y yellow imaging section as well as other 6M, 6C, 6K imaging sections. More specifically, from the display device 7 arranged below the imaging section, the laser beam L based on the imaging information is emitted in the photoconductive drums of the respective imaging sections 6M, 6C, 6K. Particularly, while emitting a laser beam from a light source and scanning the laser beam L with a polygonal mirror which is rotated, the exposure device 7 radiates it in each photoconductive drum 1 through a plurality of elements optical. Then, an image of toner of each color formed in each photoconductive drum after the development stage is overlaid on the intermediate transfer belt 8 and transferred. Thus, a color image is formed on the intermediate transfer belt.
[0060] The intermediate transfer unit comprises the intermediate transfer belt 8, four primary transfer bias rollers 9Y, 9M, 9C, 9K, a secondary transfer reserve roll 12, a plurality of tension rollers, and a section intermediate transfer cleaning and the like. The intermediate transfer belt is not only stretched / supported, but also moved endlessly in the direction of the arrow in FIG. 2 by rotating the secondary transfer reserve roller 12.
[0061] The four primary transfer polarization rollers 9Y, 9M, 9C, and 9K, respectively sandwich the intermediate transfer belt with the photoconductive drums 1Y, 1M, 1C, 1K, and form primary transfer narrows. For the primary transfer polarization roller 9Y, 9M, 9C, 9K, transfer polarization opposite polarity of toner is applied.
[0062] The intermediate transfer belt 8 runs in the direction of the arrow, and passes sequentially through the primary transfer narrowing of each primary transfer bias roll. Thus, the toner images of the respective colors in the photoconductive drums 1Y, 1M, 1C, 1K are overlaid on the intermediate transfer belt 8, and primarily transferred.
[0063] The intermediate transfer belt 8 in which the toner images of the respective colors are superimposed and transferred to reach an opposite position to the secondary transfer roller 11. In this position, a secondary transfer reserve roller 12 sandwiches the transfer belt. intermediate transfer 8 with secondary transfer roller 11, and forms secondary transfer narrows. The four-color toner images formed on the intermediate transfer belt 8 are transferred on a recording medium P such as the transfer paper, etc. performed for secondary transfer narrowing positions. Then, non-transferred toner remains which has not been transferred to recording medium P. The intermediate transfer belt reaches a position in the intermediate transfer cleaning section, where the non-transferred toner on the intermediate transfer belt 8 is collected. Thus, a series of the transfer process carried out on the intermediate transfer belt 8 ends.
[0064] The recording medium P transferred to the positions of the secondary transfer narrows is that transferred from a paper feeding section 16, which is arranged in the lower part of the body 100 of the image formation apparatus, through a paper feed roll 17 or a pair of resistor rolls 18 and the like. In particular, multiple sheets of recording medium P such as transfer paper and the like are stacked and stored in the paper feed section 16. Then, when the paper feed roller 17 is rotated counterclockwise in FIG. 2, a top recording medium P is fed into a space between the rolls of the resistor rolls 18.
[0065] The recording medium P is transferred to the pair of resistor rollers once it stops at a position of a roll narrowing of the pair of resistor rollers which stopped the rotary drive. Then, the pair of resistor rollers 18 is rotatably driven in line with color image timing on the intermediate transfer belt 8, and the recording medium P is transported to the secondary transfer narrows. Thus, a desired color image is transferred to the recording medium P. The recording medium P the color image which was transferred at the position of the secondary transfer narrows is transported to a position of a fixing section 20. Then, in this position, due to the heat and pressure of a fastening belt and a pressurizing roller, the color image transferred to the surface is fixed on the recording medium P.
[0066] The recording medium P after fixing is discharged out of the device through the space between the rollers of a pair of paper ejection rolls 19. The recording medium P ejected out of the device by the pair of paper rollers. paper ejection 19 is stacked sequentially as images emitted in a stack section 30. Then, a series of image forming process on the image forming apparatus is completed.
[0067] Next, with reference to FIG. 3, a configuration and operation of a developing device in an imaging section will be further described in detail. A 5Y developer device comprises a 21Y developer roller opposite a 1Y photoconductive drum, a 22Y scraper blade opposite the 21Y developer roller, two 25Y transport screws arranged in 23Y and 24Y developer containers, a 26Y density detection sensor configured to detect the density of a toner in a developer, and the like. The development roller 21Y comprises a magnet fixedly attached to it and a sleeve turning around the magnet, and the like. The 23Y and 24Y developer containers contain a two-component developer YG that consists of a carrier and a toner. The 24Y developer container communicates with a 161Y toner drop path through an opening formed in an upper part of the developer container.
[0068] The developing device configured in this way operates as follows. The developing roller sleeve 21Y is turning in the direction of an arrow in FIG. 3. Then, the developer YG carried on the development roller 21Y due to a magnetic field formed by the magnet moves on the development roller 21Y with the rotation of the sleeve. Developer YG on developer 5Y is set so that a proportion of one toner in the developer (toner density) is within a predetermined range. Specifically, a toner contained in a 38Y toner container is supplied to the 24Y developer container from a 160Y toner feed device via the 161Y toner drop path, according to the consumption of toner in the 5Y developer device. .
[0069] Then, the toner supplied to the developer container 24Y circulates in the two developer containers 23Y, 24Y, while being mixed and agitated by the two transport screws 25Y together with developer YG (which is moving in a vertical direction in FIG . 3). The toner in developer YG adheres to the carrier due to frictional electrification with the carrier, and is carried on the development roller 21Y with the carrier by magnetic force formed on the development roller 21Y.
[0070] The YG developer carried on the 21Y development roller is carried in the direction shown by the arrow in FIG. 3, and reaches a position of the 22Y doctor plate. After the developer is adjusted to a suitable amount in this position, developer YG on development roller 21Y is transported to a position (development area) opposite the photoconductive drum 1Y. Then, a toner adheres to a latent image formed in the photoconductive drum 1Y, due to an electric field formed in the development area. Next, developer YG remaining on developer roll 21Y reaches an upper area of developer container 23Y with rotating sleeve, and leaves developer roll 21Y in this position.
[0071] Now, 160Y, 160M, 160C, 160K toner feeding devices and 38Y, 38M, 38C, 38K toner containers will be described. The respective toner feeding devices and toner containers have an identical configuration, except for a color of a toner in a toner container to be adjusted. Thus, they will be described as a toner feeding device 160 and a toner container 38 without toner color identification letter, Y, M, C, K, attached.
[0072] As shown in FIG. 1A and FIG. 1B, a toner container 38 according to a first embodiment of the present invention is roughly divided into two types.
[0073] A 38A toner container shown in FIG. 1A and FIG. 4 includes a container body 138 in which a toner is contained therein, a nozzle receiver 139a having an orifice that receives the nozzle (insertion section) 139 arranged on the side of the second end of the container body 138 and configured to permit a nozzle conveyor 162 having a powder receiving inlet 170 is inserted into it, and a feed port 139b arranged in at least part of the nozzle receiver and configured to provide a toner powder in the container body 138 for the receiving inlet of the powder 170, and a plug 140 which is a plug supported by the nozzle receiver 139 and configured to open and close the orifice that receives the nozzle (insertion section) 139a by sliding in response to insertion of the transport nozzle 162 into the receiver nozzle 139, and is of a type where the nozzle receiver 139 attached to the container body 138 rotates integrally with it.
[0074] The tubular container body 138 has helical projections 138c, which are protruding towards the interior of the container, formed from a first end side 138a to the second end side 138b on its circumferential surface, and configured to carry a toner contained therein from the first end side 138a to the second end side 138b while the container body 138 rotates.
[0075] On an end face of the second end side 138b of the container body 138 an opening 138d is formed into which the nozzle receiver 139 is inserted, lifting sections 138e, 138f to lift any toner carried by the helical projection 138c and which accumulates in a lower part of the second end side 138b or any toner which has accumulated in the lower part of the second end side 138b from the beginning, in the container because of the rotation of the container body 138, and a drive part , for example, a gear 143 to which a driving force for rotating the container body 138 is transmitted. In this embodiment, the lifting sections 138e, 138f are arranged such that they are opposite each other with their phases displaced 180 degrees. Although there are multiple lifting sections 138e, 138f in this modality, it can be any of the lifting sections 138e, 138f, which can be arranged as four lifting sections with their phases offset 90 degrees. Alternatively, the lifting sections can be increased to four or more, and can have a number and shape which allows them to supply toner to a feed port 139b and the powder receiving inlet 170, to be described below, from above them.
[0076] The nozzle receiver 139 approximately forms a cylindrical shape that extends in a longitudinal direction of the container body 138. As shown in FIG. 4, at one end of the nozzle receiver a hole is formed which receives the nozzle (insertion section) 139a fitting the opening 138d formed in the container body 138. On a outer circumferential surface of the nozzle receiver 139, a pair of slots 139c which extend in the longitudinal direction of the nozzle receiver 139 and are arranged to face each other. The nozzle receiver 139 has an open feed port 139b on an outer circumferential surface to extend in a longitudinal direction from the nozzle receiver 139. The orifice receiving nozzle 139a and the feed port 139b are formed to be in communication at the nozzle receiver 139. The feed port 139b is formed such that at least a part of it is located in a range of movement of the plug 140. A ring-shaped sealing member 144 comprising a sponge member to prevent the scattered toner is attached to the inside of the hole that receives the nozzle 139a.
[0077] The plug 140 is a tubular shape and inserted into the nozzle receiver 139. The plug 140 is movably supported in the longitudinal direction of the nozzle receiver 139, while it supports a pin 141, which penetrates diametrically, in each slot 139c of the nozzle receiver 139. A spiral spring 142 which is a bias member is interposed between the end face 139d of the nozzle receiver 139 located opposite the orifice that receives the nozzle 139a and the plug 140. The plug 140 is propelled by the spiral spring 142 for a position to close the orifice receiving nozzle 139a (closed position), as shown in FIG. 4. The plug 140 is configured to close a portion of the feed port 139b as well as the orifice that receives the nozzle 139a when the closed position is closed. The plug 140 is configured such that when the transport nozzle 162 is inserted into the nozzle receiver 139, the plug 140 slides into the container from the closed position as shown in FIG. 4 to open the orifice that receives the nozzle 139a and the feed port 139b, and also moves to an open position as shown in FIG. 8 where the orifice receiving the nozzle 139a and the feed port 139b are in communication. In this embodiment, as the feed port 139b opens to an area adjacent to the orifice receiving nozzle 139a, the orifice receiving nozzle 139a and feed port 139b are closed if shutter 140 is in the closed position. However, if the feed port 139b is formed closest to the end face 139b, only the orifice receiving the nozzle 139a is closed when the plug 140 is in the closed position.
[0078] The 38A toner container configured in this way is attached by sliding it from the front side to the rear side of the body 100 of the imaging apparatus so that the second end side 138b of the container body 138 is located on the back side of a toner container storage 31.
[0079] The toner container 38B shown in FIG. 1B includes a container body 138 in which a toner is contained, a nozzle receiver 139, a plug 140, and a gear 143, and is configured such that the nozzle receiver 139 is supported to be rotatable with respect to the container body 138. The container body 138 and the nozzle receiver 139 have the same configurations as in the toner container 38A shown in FIG. 1A. The toner container 38B differs from the toner container 38A in that one end of the plug 140 has a different configuration and the fact that two members are added. Except for those differences, the configuration of a powder feeding device that includes the 38B toner container is the same as in FIG. 4. In FIG. 1B, the toner container 38B additionally includes a support member indicated by reference numeral 145 and a sealing member indicated by reference numeral 146. Ring-shaped support member 145 is interposed between an opening 138d of the container body 138 and an orifice that receives the nozzle 139a from the nozzle receiver 139, and supports the nozzle receiver 139 pivotally with respect to the container body 138. The sealing member 146 is attached to the outer circumferential surface of the nozzle receiver 139 that extends to from the support member 145 towards the interior of the container body 138. In the sealing member 146, an umbrella-like flap member 146a is angled towards and extends from a ring shaped base continuously in one direction circumferential. The sealing member 146 is made of rubber or resin such that the sealing member 146 can deform elastically and contact an inner circumferential surface of the opening 138d of the container body 138 when the nozzle receiver 139 is inserted in the container body 138 .
[0080] The 38B toner container configured in this way is attached by sliding it from the front side to the rear side of the body 100 of the imaging apparatus so that the second end side 138b of the container body 138 is located on the back side of a toner section container storage 31.
[0081] There are two types of feeding devices 160: one is used with the 38A toner container shown in FIG. 1A and the other with the toner container 38B shown in FIG. 1B. As they have the same configuration except for the connection section with shutter 140, their common configuration will be described here, and differences in configuration will be described individually. FIG. 5 is an overall diagram of the toner feed device 160. The toner feed device 160 shown in FIG. 4 is used with the toner container 38A shown in FIG. 1A.
[0082] Each of the toner feeding devices 160 has the toner container 38A, 38B, a transport nozzle 162, and a transport path 161 connected to the transport nozzle 162 and a developing device 5 and which carries a toner supplied to the transport nozzle for the developing device 5. transport 162 is arranged at the rear side of the toner section container storage 31 (the body 100 of the imaging apparatus) to be opposite to the shutter 140 which is inserted into the container storage of the toner section 31. A feed hopper 163 for storing a toner to be transported by the transport nozzle 162 is provided between the transport nozzle 162 and the transport path 161, and the toner is provided for the transport path 161 through the feed tank 163.
[0083] As shown in FIG. 4, the transport path 161 includes a hose 161A, and a transport screw 161B arranged on the hose 161A and which transports the toner from the feed tank 163 to the developer 5 by rotation.
[0084] The transport nozzle 162 includes a tubular nozzle section 165 to be inserted into the nozzle receiver 139 of the toner container 38A, 38B, a connection path 166 connecting the nozzle section 165 and the feed tank 163, a transport screw 167 arranged in the nozzle section 165 and which carries the supplied toner from the toner containers 38A, 38B to the connection path 166; a sealing member 168 that forms a sealing surface through the contact of the seal 144 of plug 140, and a spiral spring 169 as a thrust device.
[0085] The nozzle 165 extends in the longitudinal direction of the toner container, and its outer circumference can be inserted into the nozzle receiver 139 from the hole that receives the nozzle 139A. On the outer circumferential surface at the tip side of the nozzle section 165, a powder receiving port 170 is formed which receives a toner from the feed port 139b of the toner container 38A, 38B and the guide for the transport screw 167 A length of the nozzle section 165 is adjusted so that the powder receiving inlet 170 can be opposite the feed port 139b when the nozzle section is inserted into the nozzle receiver 139.
[0086] Connection path 166 is integrally formed with a base end of the nozzle section 165 located on the opposite side of the powder receiving inlet 170, and in communication with the nozzle section 165. The powder receiving inlet 170 it is formed such that it is located on a top face of the nozzle section 165.
[0087] A screw section 167a being formed from the tip of the nozzle section 165 to the connection path 166, and the transport screw 167 is rotatably supported by the nozzle section 165. The sealing member 168, formed of a sponge and shaped like a ring, is attached to a fastener 171 movably supported in the longitudinal direction on the outer circumferential surface of the nozzle section 165.
[0088] In the spiral spring 169, one end 169a is locked with the fastener 171 held slidingly on the outer circumferential surface of the nozzle section 165 and rotatable around the center of the shaft, and the other end 169b is locked to a member of spring reception 172 maintained on the outer circumferential surface of the nozzle section 165. In this state, the spiral spring 169 pushes the sealing member 168 towards a sealing member 144 (in a direction in which the fastener 171 moves away from the spring receiving member 172).
[0089] The powder receiving port 170 is formed to be opposite feed port 139b of the nozzle receiver 139, when the nozzle section 165 is inserted into the container body 138 from the hole receiving the nozzle 139a from the receiver nozzle 139.
[0090] A drive device 180 for the toner feed device 160 will be described. As shown in FIG. 5, the drive device 180 includes a drive motor 182 which is a drive source attached to a frame 181, a gear 183 attached to one end of the transport screw 167, a gear 184 to interlace with gear 143 of the body of container 138 when the toner container 38A, 38B is mounted with the container storage of the toner section 31 (see FIG. 2), a gear 185 attached to one end of the transport screw 161B shown in FIG. 4, and a gear train which interlaces with gears 183 to 185 and which transmits the rotation of the driving motor 182 to each gear. The drive motor 182 is controlled by a control device so that the drive device will rotate for a certain period of time, when the control device detects a toner signal with the 38A, 38B toner container mounted in a section toner container assembly 31.
[0091] For the toner feed device 160 shown in FIG. 4 which engages with the toner container 38A shown in FIG. 1A, a circular recessed section 140b is formed on an end face 140a of the plug 140 of the toner container 38A, a protrusion 165a that can be inserted into the recessed section 140c is formed at one end of the nozzle section 165, and a contact face of recessed section 140b and protrusion 165a is made a sliding surface. In contrast, if the toner container 38B shown in FIG. 1B is used, a recessed section 140c is formed on the end face 140a of the plug 140 of the toner container 38B, and a protrusion 165b can be formed at the tip of the nozzle section 165 in order to enter the recessed section 140b and engage with recessed section 140c, which in this way secures shutter 140.
[0092] In the toner feed device 160 shown in FIG. 4, when the toner container 38A rotates, the shutter 140 held for the nozzle receiver 139 also rotates integrally. However, as the contact face of the recessed section 140b and the protrusion 165a is made to the sliding surface, the rotation is not disturbed. In addition, in the toner container 38A, the nozzle receiver 139 is attached to and integrated with the container body 138. Once the nozzle receiver 139 is attached, a positional relationship with the container body 138 is established. Thus, when the nozzle receiver 139 is attached to the container body 138, it is arranged so that at least the feed port 139b is opposite the lifting section 138e or the lifting section 138f of the container body 138 and located at a position where a toner lifted by the lifting sections falls.
[0093] In contrast, if the 38B toner container shown in FIG. 1B is used, the plug 140 and the container body 138 rotate relatively, as the rotation of the plug 140 is interrupted by engaging the recessed section 140c and the protrusion 165b, and thus the rotation of the nozzle receiver 139 is also disturbed, despite the shutter 140 held for the nozzle receiver 139 of the toner container 38B it is rotatably supported for the container body 138. In addition, when the toner container 38B shown in FIG. 1B is used, which specifies a positional relationship of the feed port 139b and the lifting sections 138e, 138f of the container body 138 is difficult because in a state before the toner container 38B is assembled for the storage of the toner section container 31, the nozzle receiver 139 and the container body 138 are supported so that they can rotate relatively. Thus, the recessed section 140c and the protrusion 165b can be configured as means for positioning the feed port 139b and the powder receiving inlet 170 so that the positions of the feeding port 139b and the powder receiving inlet 170 are provided. in the nozzle part 165 they are aligned when the recessed section 140c engages with the protrusion 165b.
[0094] In the embodiment shown in FIG. 4 and FIG. 7, the powder receiving port 170 is formed on the top face of the nozzle member 165, and its orientation remains unchanged when the toner container 38A, 38B rotates. Thus, this is preferable since a toner in the toner container can be reliably supplied to the powder receiving inlet 170, if the recessed section 140c and the protrusion 165b are formed so that the feed port 139b faces the top face when each toner container is assembled for the toner section container storage 31.
[0095] With reference to FIG. 4 through FIG. 10B, the operation of the toner feed device 160 thus configured will be described. While the toner container 38A, 38B is transported or stored before being assembled to the container storage of the toner section 31 shown in FIG. 2, the orifice that receives the nozzle 139a is closed by the plug 140 driven by the spiral spring 142. Which means, the toner container is in an almost sealed state since the communication between the orifice that receives the nozzle 139a and the door supply 139b is blocked. From this state, as shown in FIG. 4, the toner container 38A, 38B is inserted horizontally into the container storage of the toner section 31 with the side of the opening 138d as a side of the tip. As the insertion proceeds, the tip of the nozzle section 165 comes into contact with the end face 140a of the plug 140. Then, in the case of the toner feed device 160 shown in FIG. 4, not only the protrusion 165a at the tip of the nozzle section 165 is inserted into the recessed section 140b of the plug 140, but also the sealing member 144 contacts the sealing member 168. If the toner container 38B shown in FIG. 1B is used, the protrusion 165b of the nozzle section 165 engages with the recessed section 140c of the plug section 140, and as a result of engaging both, the plug 140 is fixed and positioned.
[0096] When the toner container 38A, 38B is additionally moved to the rear side, as shown in FIGs. 6 and 7, the plug 140 is pushed into the container body 138 through the nozzle section 165 against a pushing force of the spiral spring 142. In addition, with the movement of the toner container 38A, 38B, the sealing member 168 it is also pushed to the rear by the toner container 38A, 38B against the pushing force of the spiral spring 169. Thus, the sealing member 168 and the sealing member 144 are in a state in which they are pressed against each other. another, and the sealing of the orifice receiving the nozzle 139a is thus guaranteed. The toner container 38A, 38B stops moving when they are fully housed in the container of the toner section 31 and the first end side 138a of the container body 138 is rotatably supported by a support, and occupies an assembled position. The plug 140 is further slid into the container by the nozzle section 165 until the toner container 38A, 38B occupies the assembled position. Through the toner container 38A, 38B which occupies the assembled position, the shutter 140 stops sliding and occupies an open position as shown in FIGS. 6 and 7. Then, not only the receiving port 139a but also the feed port 139b are opened, and as shown in FIG. 8, the powder receiving port 170 is formed in the nozzle receiver 139 and opposite the feed port 139b located above, and thus communicates with the interior of the toner container.
[0097] With the toner container 38A, 38B configured like this, since the toner container 38A, 38B has the nozzle receiver 139 arranged on the second end side 138b of the container body 138 and configured to allow the nozzle section 165 of the transport nozzle 162 having the powder receiving port 170 to be inserted into it and supplying the toner in the container body 138 to the powder receiving port 170, and the plug 140 supported by the nozzle receiver 139 to be able to open and closing the orifice receiving nozzle 139a and sliding in response to an insertion of nozzle section 165 into nozzle receiver 139 to open and close at least the orifice receiving nozzle 139a and feed port 139b leading to the orifice receives the nozzle 139a in this embodiment, the orifice that receives the nozzle 139a and the feed port 139b are kept in a closed state until the nozzle section 165 is inserted into the nozzle receiver 139. When the plug 140 slides in response to the input the nozzle section 165 on the nozzle receiver 139, the orifice receiving the nozzle 139a is open and the plug 140 pushes any toner accumulated around the feed port 139b away into the container. As a result, a safe space is provided around the feed port 139b, which allows the toner T to be reliably fed into the powder receiving inlet 170. Thus, the toner contained in the container can be reliably discharged to the outside of the container, while preventing let the T toner spread and fly.
[0098] When the imaging device is operated with the toner container 38A, 38B located in the assembled position, and when a toner feed signal is emitted from the control device, the drive motor shown in FIG. 5 is rotated. When the driving motor 182 is rotationally driven, its driving force is transmitted to gear 143 through gear 184, which thus rotates the toner container 38A, 38B. The driving force of the drive motor 182 is also transmitted to the transport screw 167 in the nozzle section 165, and the transport screw 167 rotates in one direction to transport the toner to the connection path 166. In addition, the force drive motor 182 is also transmitted to the transport screw 161B on the transport path 161 via gear 185 as shown in FIG. 4, and the transport screw 161B rotates in one direction to transport the toner to the developer 5.
[0099] When the toner container 38A, 38B rotates, the toner contained in the container is transported to the second end side 138b through a helical groove action 138c and also the transported toner T is mixed with a toner accumulated in the bottom of the second end side 138b.
[00100] The feed port 139b formed on the nozzle receiver 139 and the lifting section 138f of the container are in a fixed positional relationship. Thus, as shown in FIG. 9A, when the toner container 38A spins due to rotation, the toner T accumulated at the bottom of the container is lifted into the container by the lifting section 138f and falls down the path. As shown in FIG. 9B, toner T is supplied in the nozzle section 165 through the powder receiving inlet 170 when the powder receiving inlet 170 in the nozzle section 165 almost corresponds in position with the feed port 139b which moves circumferentially due to rotation.
[00101] The powder receiving input 170 provided in the nozzle section 165 and the feed port 139b formed in the nozzle receiver 139 are in a fixed positional relationship. Thus, as shown in FIG. 10A, when the toner container 38A rotates due to rotation, the toner T accumulated at the bottom of the container is lifted in the container alternately by the lifting section 138e, 138f, during which, as shown in FIG. 10B, the toner T drops and is supplied in the nozzle section 165 through the feed port 139b and the powder receiving inlet 170.
[00102] This means that, in the case of the 38A toner container, the T toner in the container is supplied in the nozzle section 165 only while the powder receiving inlet 170 of the nozzle section 165 and the feed port 139b of the receiver nozzle 139 overlap at a turn of the container. In the case of the 38B toner container, the toner T in the container is supplied in the nozzle section 165 each time the lifting sections 138e, 138f pass over the powder receiving inlet 170 of the nozzle section 165 and the feed port 139b provided in the nozzle receiver 139, positions of which correspond, at a turn of the container.
[00103] The toner T provided in the nozzle section 165 is transported by the transport screw 167 towards connection path 166, and falls into connection path 166. The dropped toner T is fed to transport path 161 through the tank 163 shown in FIG. 4, and transported and supplied to the developing device 5 by the rotation action of the transport screw 161B.
[00104] A 38C, 38D toner container, like a dust container, is made by adding a loosening member 190 to break up the accumulated toner near feed port 139b to the 38A, 38B toner container as shown in FIGs. 1A and 1B. As a configuration of the toner container 38C, 38D is the same as the toner container 38A, 38B, except for the loosening member 190, a configuration of the loosening member 190 and the action in this way will be mainly described now.
[00105] As shown in FIGs. 11A, 11B and 12A, 12B, the loosening member 190 is a ring member in the center of which a hollow hole 190a is formed, and in which a groove 190c for engaging a pin 141 that penetrates a plug 140 is formed in a side face 190b. As shown in FIG. 13, an outer circumferential surface of a nozzle receiver 139 is inserted into the hollow hole 190a. Pin 141 of plug 140 housed within nozzle receiver 139 is fitted to groove 190c from side face 190b. With this structure, the loosening member 190 is made integrally movable with the plug 140 while protruding from the nozzle receiver 139 towards the interior of the toner container.
[00106] In summary, the loosening member 190 is a protruding member from the nozzle receiver 139 towards the interior of the container body 138 and configured to be movable in the direction of movement of the shutter 140 in conjunction with opening operations and closing the shutter 140.
[00107] The loosening member 190 is mounted to the plug 140 so as to be arranged on the inner end side 140d of the plug 140. When the plug 140 occupies the closed position as shown in FIG. 13, the loosening member 190 occupies a first position between the second end side 138b of the container body 138 and the end of the feed port 139b. When the shutter 140 occupies the open position as shown in FIG. 14, the loosening member occupies a second position between the first end side 138a of the container body 138 and the feed port 139b. Specifically, the loosening member 190 moves to and from the first and second positions with the movement of the shutter 140.
[00108] With the configuration provided with such a loosening member 190, as shown in FIG. 14, a space can be more easily trapped around feed port 139b, by pushing away any accumulated toner near feed port 139b as a result of sliding shutter 140, breaking any accumulated toner close to port supply 139b as a result of movement of the loosening member 190, and friction through the toner accumulated near the supply port 139b, more specifically, at the nozzle receiver 139. This allows for reliable toner feeding from the supply port 1139b for the powder receiving inlet 130. Thus, the powder contained in the 38C, 38D toner container can be reliably discharged outside the container, while preventing the dust from spreading and flying from the container.
[00109] As the loosening member 190 as shown in FIGs. 11A, 11B and 12A, 12B is a ring member, it is expected that the slip resistance when the loosening member rubs through a toner increases, if it slides in the longitudinal direction of the nozzle receiver 139 while the plug 140 moves . Thus, as shown in FIGs. 15A and 15B, for example, the loosening member can be a loosening member 190A having an opening 190d that penetrates in its own direction of movement. In this case, the number and area of aperture 190d may vary depending on the slip resistance. For example, if the slip resistance while the shutter 140 moves is large, the opening area can be reduced. If the slip resistance is small, no opening 190d can be formed or the opening area can be reduced. As shown in FIGs. 15A and 15B, as means for adjusting the opening area, multiple openings 190d can be formed or adjustment can be made by changing the size of the opening 190d.
[00110] A loosening member shape should not be limited to a ring shape. For example, it can be a loosening member 190B, as shown in FIGs. 16A and 16B, configured to have multiple reed members 195 spaced in a circumferential direction, a loosening member 190C, as shown in FIG. 17A, configured to have pin 141 protruding into the container from the surface of the nozzle receiver 139 extending the total length of pin 141, or a loosening member 190D, as shown in FIG. 17B, configured by one or more pins 196 which are protruding from the surface of the plug 140 further into the container than to the surface of the nozzle receiver 139. The shape of the loosening members can be selected and defined as appropriate depending on the slip resistance as the shutter 140 slides, the internal shape of the toner container, or toner flow characteristics. (Second Mode)
[00111] Now, the 160Y, 160M, 160C, 160K toner feeding devices and 38Y, 38M, 38C, 38K toner containers according to a second embodiment of the present invention will be described hereinafter. Since the toner feeding devices and toner containers have an identical configuration, except for a color of a toner in a toner container to be adjusted, they will be described as a toner feeding device 160 and a toner container 38 without letter toner color identification label, Y, M, C, K, attached.
[00112] The 38A toner container shown in FIG. 18 and FIG. 19 includes a container body 138 in which a toner is contained in it, a nozzle receiver 139 having an orifice that receives the nozzle (insertion section) 139a arranged on the side of the second end of the container body and configured to permit a nozzle transport 162 having a powder receiving port 170 to be inserted into it, and a feed port 139b configured to supply a toner powder in the container body 138 to the powder receiving port 170, and a plug 140 which is a movable plug in one direction to open and close the orifice receiving nozzle 139a. Now, the nozzle receiver 139 having the orifice receiving the nozzle 139a and the container body 138 rotates freely. In the figures (which also include the subsequent figures), the illustration of support members, sealing members and the like in connection with the nozzle receiver 139 and the container body 138 is omitted. Then, in the toner container 38, the hole receiving the nozzle 139a is arranged within the outer circumference of the container body 138, and the center of the hole receiving the nozzle 139a O1 is displaced from the center of rotation of the container body 138 as shown by the letter O.
[00113] The tubular container body 138 has helical projections 138, which are protruding towards the interior of the container, formed from the first end side 138a to the second end side 138b on its circumferential surface, and are configured to transport a toner contained therein from the first end side 138a to the second end side 138b while the container body 138 rotates.
[00114] An end face of the second end side 138b of the container body 138 is provided with an opening 138d into which the nozzle receiver 139 is inserted, lifting sections 138e, 138f, and a gear 143 for which the force drive for rotating the container body 138 is transmitted. A toner carried by the helical projection 138c and accumulated on a lower part of the second end side 138b or a toner accumulated on the bottom of the second end side 138b from the beginning is lifted by the lifting sections 138e, 138f with the rotation of the body of container 138. In this embodiment, the lifting sections 138e, 138f are arranged opposite each other with their phases displaced by 180 degrees. Although there are several lifting sections 138e, 138f in this modality, there can be any of the lifting sections 138e, 138f, or there can be four lifting sections arranged as with their phases displaced by 90 degrees. Alternatively, four or more lifting sections can be provided. The lifting sections can have any number and any shape as long as the number and shape allows a toner to be supplied from above to a feed port 139b and the powder receiving inlet 170 to be described below.
[00115] The nozzle receiver 139 includes a tubular main body section 139c formed as an almost cylindrical shape that extends in a longitudinal direction of the container body 138, a ring shaped bottom mounting section 139d formed at one end of the main body tubular section 139d and configured to be mounted to the container body 138, and the orifice that receives the nozzle (insertion section) 139a which is in communication with the main body tubular section 138c and in which the transport nozzle is inserted. Then, the orifice that receives the nozzle 139a and the main body tubular section 139c are arranged in a coaxial line, and formed so that the center of the mounting section 139d corresponds with the center of rotation O of the container body 138. O the orifice receiving the nozzle 139a and the main body tubular section 139c are formed so that the central part of it is displaced downwards with respect to the center of the mounting section 139d (the center of rotation O of the container body 138). The feed port 139b communicating with the orifice receiving the nozzle 139a through the main body tubular section 139c opens and is formed on an outer circumferential surface of the main body tubular section 139c.
[00116] In this embodiment, the central part of the orifice that receives the nozzle 139a is arranged in the lowest position on the side upstream of the direction of rotation of the container body 138. In this embodiment, the container body 138 rotates in an anti- hourly in FIG. 18 and FIG. 19.
[00117] The feed port 139b is formed such that at least part of it is located in the movement range of the plug 140. A ring-shaped sealing member formed of a sponge member to prevent a spilled toner from being mounted between the nozzle receiving orifice 139a and the container body 138.
[00118] As shown in FIG. 18 and FIG. 19, the plug 140 and a spiral spring 142, thrust means, are inserted in the main body tubular section 139c. The spiral spring 142 is inserted between a bottom 139e of the main body tubular section 139 and a bottom 140b of the plug 140 located in the main body tubular section 139c, and pushes the plug 140 towards a position (closed position) to close the orifice that receives the nozzle 139a and the feed port 139b, as shown in FIG. 19.
[00119] The main body tubular section 139c is located in an internal space where at least the feed port 139b is opposite the lifting sections 138e, 138f when the nozzle receiver 139 is mounted to the container body 138, and formed in lengths while the feed port 139b can guarantee a shutter strike 140 when the aperture shutter 140 occupies an open position shown in FIG. 20. This means that the feed port 139b is provided so that it is opposite the lifting sections 138e, 138f in the container body 138.
[00120] The plug 140 is a tubular member and configured not only to close the orifice that receives the nozzle 139a, but also to block a communication state of the feed port 139b when it occupies the closed position. The plug 140 is mounted on the main body tubular section 139c through a stop member, and avoids jumping from the main body tubular section 139c when it occupies the closed position. The plug 140 is configured to slide in the container body from the closed position as shown in FIG. 19 when the transport nozzle 162 is inserted into the nozzle receiver 139, and to move to the open position as shown in FIG. 20 where it not only opens the orifice receiving nozzle 139a and feed port 139b, but also places the orifice receiving nozzle 139a and feed port 139b in the communicating state. This means that the plug 140 works to open the orifice that receives nozzle 139a in response to insertion of the transport nozzle 162 into the orifice that receives nozzle 139a, and to close the orifice that receives nozzle 139a in response to disengagement. of the transport nozzle 162 from the orifice receiving the nozzle 139a.
[00121] The toner container 38 configured in this way is assembled by being slid from the front side to the rear side of a main body of an image machine main body 100, so that the second end side 138b of the container body 138 is located on the back side of a toner section container storage 31. This direction must be an assembly direction.
[00122] FIG. 19 is an overall view of a toner feed device 160. The toner feed device 160 has a transport nozzle 162 inserted in each toner container to receive toner feed, and a transport path 161 connected to the nozzle. conveyor 162 and developing device 5 and transporting the supplied toner to the transport nozzle 162 for developing device 5. The transport nozzle 162 is arranged on the back side of a toner section container storage 31 ( the body 100 of the imaging apparatus) so that it is opposite a plug 140 of the toner container to be inserted into the container storage of the toner section 31. A feed hopper 163 for storing the toner to be transported by the transport nozzle 162 is provided between transport nozzle 162 and transport path 161, and toner is supplied to transport path 161 through feed hopper 163.
[00123] Transport path 161 includes a hose 161A, and a transport screw 161B arranged on hose 161A and which transports the toner from the feed tank 163 to the developer 5 by rotation.
[00124] The transport nozzle 162 includes a tubular nozzle section 165 to be inserted into the nozzle receiver 139 of the toner containers 38, a connection path that connects the nozzle section 165 and the feed hopper 163, a screw transport 167 arranged in the nozzle section 165 and which carries the supplied toner from the toner container 38 to the connection path 166, and a sealing member.
[00125] The nozzle 165 extends in the longitudinal direction of the toner container, and its outer circumference can be inserted into the nozzle receiver 139 from the hole that receives the nozzle 139a. On the outer circumferential surface on the tip side of the nozzle section 165, a powder receiving inlet 170 is formed which receives a toner from the feed port 139b of the toner container 38 and the guide for the transport screw 167. One nozzle section length 165 is adjusted so that the powder receiving inlet 170 can be opposite feed port 139b when the nozzle section is inserted into nozzle receiver 139. A convex section 165a is formed at the tip of the nozzle section nozzle 165 so that it enters a recessed section 140b of shutter 140.
[00126] Connection path 166 is integrally formed with a base end of the nozzle section 165 located on the opposite side of the powder receiving inlet 170, and in communication with the nozzle section 165. The powder receiving inlet 170 is formed such that it is located on a top face of the nozzle section 165. The transport screw 167 has a screw section 167a formed from the tip side of the nozzle section 165 to the connection path 166, and is rotatively supported by nozzle section 165.
[00127] The powder receiving port 170 is formed so that it is opposite feed port 139b of the nozzle receiver 139, when the nozzle section 165 is inserted into the container body 138 from the orifice receiving the nozzle 139a of the nozzle receiver 139.
[00128] A description of the drive device 180 of the toner feed device 160 will be omitted since it is identical to the first mode.
[00129] With reference to FIG. 19 and FIG. 20, the operation of the toner feed device 160 configured in this way will be described. While the toner container 38 is transported or stored before being assembled in the container storage of the toner section 31 shown in FIG. 2, the orifice that receives the nozzle 139a is closed by the plug 140. This means that the toner container is in general a sealed state as communication between the orifice that receives the nozzle 139a and the feed port 139b is blocked. From this state, as shown in FIG. 19, with the opening side 138d as a tip side, the toner container 38 is moved in an assembly direction and inserted horizontally into the container storage of the toner section 31. When insertion proceeds, the convex section 165a of the section nozzle 165 is inserted into and engages with the recessed section 140b of the plug 140, and so the plug 140 is integrated with the transport nozzle side 162.
[00130] When the toner container 38 is additionally moved to the mounting direction, as shown in FIG. 20, the plug 140 is pushed into the container body 38 by the nozzle section 165 against a pushing force of the spiral spring 142. The toner container 38 stops movement when they are fully housed in the container storage of the toner section 31 and the first end side 138a of the container body 138 is rotatably held by a support, and occupies an assembled position. The plug 140 is further slid into the container body by the nozzle section 165 until the toner container 38 occupies the assembled position. Through the toner container 38 in the assembled position, the shutter 140 stops sliding and occupies an open position. Then, not only the nozzle receiver port 139a but also the feed port 139b are opened, and as shown in FIG. 10, the powder receiving inlet 170 is formed in the nozzle receiver 139 and opposite the feed port 139b located above, and thus communicates with the interior of the toner container.
[00131] With the toner container 38 configured like this, as the toner container 38 has the nozzle receiver 139 arranged on the side of the second end 138b of the container body 138 and having a feed port 139b configured to allow the nozzle section 165 of the transport nozzle 162 having the powder receiving inlet 170 to be inserted into it and to supply the toner in the container body 138 to the powder receiving inlet 170, and the plug 140 supported by the nozzle receiver 139 to be able opening and closing the orifice that receives the nozzle 139a and that slides in response to the insertion of the nozzle section 165 of the transport nozzle 162 to the orifice that receives the nozzle 139a of the nozzle receiver 139 to open at least the orifice that receives the nozzle 139a and the feed port 139b connected to the orifice receiving nozzle 139a in this embodiment, and to close the orifice receiving nozzle 139a in response to disengagement of nozzle section 165 from the orifice receiving the nozzle 139a, the orifice receiving nozzle 139a and the feed port 139b are kept in a closed state until nozzle section 165 is inserted into the orifice receiving nozzle 139a of nozzle receiver 139. Thus, when the nozzle section nozzle 165 of the transport nozzle 162 is disengaged from the orifice that receives the nozzle 139a to replace the toner container 38, any spillage or flight of the powder can be avoided as the orifice that receives the nozzle 139a and the feed port 139 are maintained in the closed state by the shutter 140.
[00132] When the container body 138 rotates, not only the toner contained in the container body 138 is transported to the second end side 138b through the action of a helical groove 138c but also the transported toner T is mixed with an accumulated T toner at the bottom of the second end side 138b.
[00133] As shown in FIG. 21A, when the toner container 38 rotates due to rotation, the toner T accumulated at the bottom of the container is lifted in the container alternately by the lifting section 138e, 138f, during which, as shown in FIG. 21B, the toner T drops and is supplied in the nozzle section 165 through the feed port 139b and the powder receiving inlet 170. This means that, in the case of this toner container 38, the toner T in the container body 138 is provided in the nozzle section 165 each time the lifting sections 138e, 138f pass over the powder receiving inlet 170 of the nozzle section 165 and the feed port 139b provided in the nozzle receiver 139, positions of which correspond, at a turn of the container.
[00134] As shown in FIG. 20, the toner T provided in the nozzle section 165 is transported by the transport screw 167 towards connection path 166, and falls into connection path 166. The dropped toner T is fed to transport path 161 through the deposit tank. 163 shown in FIG. 19, and transported and supplied to the developing device 5 by the rotation action of the transport screw 161B.
[00135] In this embodiment, as the orifice receiving the nozzle 139a is arranged within the outer circumference of the container body 138, and the center of the orifice receiving the nozzle 139a O1 is displaced from the center of rotation O of the container body 138, the transport nozzle can be arranged freely. Thus, such a free design of the transport nozzle 162 allows the reduction of the dimensioning and the reduction of the cost of the main device body. In addition, if a central part O1 of the orifice receiving the nozzle 139a is displaced from the center of rotation O of the container body, the feed port 139b can efficiently collect any toner that falls from the inner wall of the main body of container 138 because of the orifice receiving nozzle 139a which is located closer to the vicinity of the inner wall of the main container body than when it is arranged at the center of rotation O of the container body 138.
[00136] As the main device body can be made smaller, the container body 138 can be more easily made larger. Thus, while the volume of the full toner can be increased, a toner container replacement cycle 38 can be extended.
[00137] Since the feed port 139b is provided in the nozzle receiver 139 so that it is opposite the lifting sections 138e, 138f in the container body 138, the feed port 139b can efficiently collect the toner T which is agitated by the lifting sections 138e, 138f and falls due to their weight.
[00138] On the one hand, when the toner container 38 is disengaged from the container storage of the toner section 31, the toner container 38 is moved to the front side from the assembled position as shown in FIG. 20. Then, with the movement of the toner container 38, the transport nozzle 162 exits the container body 138, and the plug 140 is pushed back through the pushing force of the spiral spring 142 from the open position to the position closed. Consequently, the feed port 139b and the orifice receiving the nozzle 139a are closed by the plug 140.
[00139] As shown in FIG. 25A, in this embodiment, a loosening member 290 for breaking up a toner accumulated near the feed port 139b is provided in the plug 140 described above. As shown in FIG. 25A, the loosening member 290 is configured by a protruding pin protruding from the outer circumferential surface of the plug 140, which additionally penetrates a hole 139h formed in the main body tubular section 139c of the nozzle receiver 139, and protruding into the container body 138. This means that the loosening member 290 is a protruding member into the container body 138 from the nozzle receiver 139 and configured to be able to move in a direction of movement of the shutter 140 in conjunction with a shutter opening and closing operation 140.
[00140] The loosening member 290 occupies a first position where it occupies the second end side 138b of the container body 138 instead of the end of the feed port 139b when the plug 140 occupies the closed position. It occupies a second position where it occupies the first end side 138a of the container body 138 instead of the feed port 139b when the plug occupies the open position of the container body 138. Specifically, the loosening member 290 moves to the first position and second position while the shutter 140 moves.
[00141] With the configuration that includes such a loosening member 290, as shown in FIG. 26, when the plug 140 slides, the loosening member 290 also moves. This makes it easier to more securely acquire space around feed port 139b. Thus, a toner can be reliably discharged to the outside of the container while the toner contained in the toner container 38 is prevented from spilling or flying out of the container. Although the loosening member is configured by a pin here, it can be configured so that multiple pins protrude from the main body tubular section 138c. The protrusion of the pin does not have to be a fixed amount, and long and short pins can be provided alternately to form a concave-convex shape.
[00142] A loosening member should not be limited to a pin, and may be a ring member 19 having a hollow hole 291a formed in the center, as shown in FIG. 25B, for example. In this case, the main body tubular section 139c is inserted into the hollow hole 291a of the ring member 219 and slidably supported by the main body tubular section 139c. In addition, by forming a groove section 291c on a side face 291b of the ring member 291 to fit on a pin 293 that penetrates the plug 140, and which fits the pin 293 on the groove section 291c, the pin 293 can move fully with shutter 140 and decompose the accumulated T toner near feed port 139b through the movement of shutter 140.
[00143] In each embodiment, despite the central part O1 of the orifice that receives the nozzle 139a, it is arranged in the lowest position on the side upstream of the direction of rotation of the container body 138, in relation to the center of rotation O of the toner container 38 (container body 138), the arrangement of the orifice receiving the nozzle 139a is not limited to this position, and as shown in FIG. 21A, can be arranged between the lowest position and the highest position on the side upstream of the direction of rotation of the container body 138, specifically, in the mounting section 139d located in the strip from the center of the lifting section 183e to the center of the lifting section 138f when the lifting section 138e is positioned above.
[00144] Such an arrangement of the orifice that receives the nozzle 139a allows efficient collection of the toner stirred by the lifting section 138e or 138f as a result of the rotation of the container body 138.
[00145] In each mode described above, the toner container 38 is a recessed helical groove 138c formed in the container body 138, and configured to transport a toner in the container body 138 from the first end side 138a of the container to the second end side 138b into which the nozzle section 165 of the transport nozzle 162 is inserted. However, a dust container to which the present invention applies should not be limited to this configuration. For example, a well-known agitator for transporting toner by rotation in the container body 138 can be arranged as an additional member in the container body 138. Or, in place of the aforementioned helical groove 138c which the outer side is concave and which the inner side is convex, a helical convex section having a convex inner side and without making the outer side concave can be provided in the container body 138 to transport the toner.
[00146] The powder container to be used in the imaging apparatus according to the present invention has a container body for transporting the powder contained therein from the first end side to the second end side of it by self-rotation. ; a nozzle receiver having an orifice that receives the nozzle rotatably arranged on the side of the second end of the main container body and configured to allow a transport nozzle having a powder receiving inlet to be inserted into it, and a feed port arranged in at least a part of the nozzle receiver and configured to supply the powder in the container body to the powder receiving inlet; and a plug which is movable in one direction to open and close the orifice that receives the nozzle, and configured to open the orifice that receives the nozzle in response to inserting the transport nozzle into the orifice that receives the nozzle and to close the orifice that receives the nozzle in response to disengagement of the transport nozzle from the orifice that receives the nozzle, where the orifice that receives the nozzle is arranged within the outer circumference of the container body, and a central part of the orifice that receives the nozzle is displaced from the center of rotation of the container body.
[00147] In addition, the nozzle receiver 139 is rotatably supported for the container body 138, and the central part O1 of the hole receiving the nozzle 139a is displaced from the center of rotation O of the toner container 38 (body of container 138). In this case, the transport nozzle 162 and the orifice receiving the nozzle 139a can be displaced in a circumferential direction when the toner container 38 is mounted on the toner container tank 31 (the main body of the imaging apparatus 100).
[00148] To avoid this, in this embodiment, the toner container 38 is provided with a structure to align the hole that receives the nozzle 139a with the position of the transport nozzle 162. Specifically, as shown in FIG. 22A, an inclined surface 390 inclined from the transport nozzle side 162 towards the interior of the container body 138 is formed on an end face 139f of the nozzle receiver 139 opposite the nozzle section 165 of the transport nozzle 162, and the orifice receiving the nozzle 139a is arranged in the deepest section 390b on the inclined surface 390 towards the container body 138. The inclined surface 390 has first end side which forms the highest section 390a located on the transport nozzle side. 162 and the second end side forming the deepest section 390b.
[00149] Thus, as shown in FIG. 22A, even when the nozzle section 165 and the orifice receiving the nozzle 139a are displaced in the circumferential direction, the tip of the nozzle section 165 contacts the inclined surface 390 with the toner container 38 moved in the mounting direction. If the toner container 38 is moved further in the mounting direction, the orifice that receives the nozzle 139 rotates and is pushed by the nozzle section 165. Thus, the tip of the nozzle section 165 moves along the inclined surface 390 of the receiver. nozzle 139 and the deeper section 390b is opposite the nozzle section 165. Specifically, in conjunction with the movement of the toner container 38 in the mounting direction, the hole receiving the nozzle 139a rotates and moves to the position it corresponds to with the position of the tip of the transport nozzle 162. Thus, the toner container 38 can be mounted with the container storage of the toner section 31 (the main body of the imaging device 100) without caring for its orientation , and in this way the toner container 38 can be adjusted more easily.
[00150] In this embodiment, the inclined surface 390 is formed on the nozzle receiver 139, and the nozzle receiver 139 is rotated with the inclined surface 390 being in contact with the nozzle section 165 to automatically align the hole receiving the nozzle 139a with the nozzle section 165. However, the method of changing the position of the orifice that receives the nozzle 139a is not limited to this. For example, a convex section can be provided for the nozzle receiver 139 to be attached to the container body 138 and a recessed section which has a wider receiving door and which gradually narrows in can be provided to the body 100 of the container. image formation apparatus. Then, the nozzle section 165 and the orifice receiving the nozzle 139a can be adjusted in the appropriate positions through the use of these convex and recessed sections. In addition, in the case where the nozzle section 165 is arranged opposite the lowest position on the end face 139f of the nozzle receiver 139, the nozzle receiver 139 can be configured to have its own center of gravity in the orifice that receives the nozzle. 139a, and the orifice receiving nozzle 139a from nozzle receiver 139 can always be set in the lowest position by using the weight (gravity) of the orifice receiving nozzle 139a.
[00151] Additionally, as shown in FIG. 23, in this embodiment, a mini-hopper 240 which communicates with the feed port 139b and which serves as a powder storage section for collecting toner in the container body 138 is provided in the nozzle receiver and rotatably mounted in the container body. container 138. A numeral 239 is assigned to the mouthpiece receiver according to the modality.
[00152] A nozzle receiver 239 configuration is the same as the nozzle receiver 139, except for the mini power devices 240. As shown in FIG. 23, the mini-tank 240 has a box shape formed as a protruding fan from the main tubular body 139c, with the bottom of the mini feed tank communicating with the feed port 139b and the top part being an opening 240a wider than the opening area of the feed port 139b.
[00153] As shown in FIG. 24, the mini feed hopper 240 is formed in an opposite position to the lifting sections 138e, 138f on the container body 138b when the nozzle receiver 239 is mounted on the container body 138.
[00154] When the toner container 138 having the nozzle receiver configured in this way is pushed into the mounting position as shown in FIG. 24, the nozzle section 16 is inserted into the orifice that receives the nozzle 139a from the nozzle receiver 239, the plug 140 moves to the open position, and the feed port 139b is in communication with the powder receiving inlet 170.
[00155] Thus, if the container body 138 includes the nozzle receiver 239, an area to receive the toner stirred by the lifting sections 138e, 138f and the drop by its own weight when the container body 138 rotates increases, being able in this way to collect the toner more efficiently and store the toner collected in the mini feed devices 240. Consequently, the amount of toner to be transported by the transport screw 167 from the feed port 139b through the receiving input of the powder 170 can be stabilized.
[00156] As described above, the powder feeding device according to the second modality has a powder container, a transport nozzle inserted in the powder container, and configured to have a powder receiving entrance which the toner in powder is supplied from a powder container feed port, and a transport path connected to the transport nozzle and a developing device and configured to transport the supplied toner to the transport nozzle for the developing device, where the nozzle receiver mentioned above is rotatably supported in the container body as a powder container, a central part of the orifice receiving the nozzle is displaced from the center of rotation of the container body, and the feed port is arranged to be located inside the container body.
[00157] The image forming apparatus according to the second embodiment includes the powder feeding device mentioned above.
[00158] According to the second embodiment, how the orifice that receives the nozzle is arranged within the outer circumference of the container body, and the central part of the orifice that receives the nozzle is displaced from the center of rotation of the container body , the transport nozzle can be arranged freely, thus allowing the main body of the device to be reduced or reduced by free design or by releasing the transport nozzle. In addition, if the central part of the hole receiving the nozzle is displaced from the center of rotation of the container body, the feed port can efficiently collect any toner that falls from the inner wall of the container body because of the hole receiving nozzle is located closer to the vicinity of the inner wall of the main container body than when it is arranged at the center of rotation of the container body.
[00159] As described above, with the invention according to the first embodiment of this case and the invention according to the second embodiment, as the toner container has a nozzle receiver having a hole that receives the nozzle arranged on the side of the second end of the container body and configured to allow a transport nozzle having a powder receiving inlet to be inserted into or removed therefrom, and a feed port arranged in at least part of the nozzle receiver and configured to provide the powder in the container body for the powder receiving inlet; and a plug being movable in one direction to open and close the orifice that receives the nozzle and configured to open the orifice that receives the nozzle in response to insertion of the transport nozzle into the orifice that receives the nozzle and to close the orifice that receives the nozzle. nozzle in response to disengagement of the transport nozzle from the nozzle receiving the nozzle, the toner container can prevent any spillage or dust flying when the toner container is replaced, as the nozzle receiving the nozzle is closed by the shutter when the transport nozzle is disengaged from the hole that receives the replacement nozzle.
[00160] In the aforementioned modalities, it should be noted that the powder receiving inlet of the transport nozzle is communicating with the feed port in a position towards the container body on the gear in an axial direction of the container body . In a conventional toner bottle including at one end an opening and a driven gear mounted at the end where the opening is provided. Then, it is necessary to attach to and remove the toner bottle from an apparatus, and engage the driven gear with a drive gear provided on the apparatus. Therefore, the bottle is provided with a step that a diameter of the end of the bottle on which the driven gear is arranged must be adjusted to be less than that of the other portion of the bottle. This results in the opening having a small diameter. Consequently, in the conventional toner bottle, when a toner is discharged from the bottle through the opening, as the opening has a small diameter, the toner is difficult to be incorporated into the bottle. In the embodiments according to the present invention, as the toner is contained in the container through the transport nozzle, it can be easily reached to discharge the toner from the container without requiring any complex procedure.
[00161] Although the preferred modalities of the present invention have been described, it should be understood that the present invention is not limited to these modalities, various changes and modifications can be made to the modalities. [List of Reference Signs] 5: (Y, M, C, K) Developing devices 38: (A to D) Dust containers 138: Container body 138a: First end side 138b: Second end side 138e, 138f Lifting sections 139: 239: Nozzle receivers 139a: Nozzle receiving hole 139b: Feed port 139f: End face of nozzle receiver 140: Shutter (Shutter) 160: Powder feeding device (Feeding device toner) 161: Transport path 162: Transport nozzle 170: Dust inlet 190 (A to D): Loosening members 190d: Opening that penetrates in the direction of movement 195: Multiple reed members 196: Pin 240: Section powder storage section 240a: Opening of the powder storage section 390: Inclined surface 390b: Deepest section T: Powder O: Center of rotation of the container body O1: Central part of the nozzle receiving hole [Citation List] [ Patent Literature] [Patent Document 1] Pat Application Japanese Entity No.349285

权利要求:
Claims (14)
[0001]
1. Dust container (38) configured to contain dust to be used in an image forming apparatus, the powder container (38) comprising: a container body (138) including a first end (138a) and a second end (18b) and containing a toner, the second end (138b) being disposed on a side opposite the first end (138b), wherein the second end (138b) has an opening (138d); a gear (143) provided at the second end (138b) and which receives a driving force to rotate the container body (138b); a nozzle receiver (139) including an orifice receiving the nozzle (139a) arranged on the second side of the end of the container body (138) and configured to allow a transport nozzle (162) having a powder receiving inlet ( 170) is inserted into it, and a feed port (139b) arranged in at least part of the nozzle receiver (139) and configured to feed powder into the container body (138) at the powder receiving port (170) ; and a plug (140) supported by the nozzle receiver (139) and configured to open and close the nozzle receiving hole (139a) by sliding in response to insertion of the transport nozzle (162) into the nozzle receiver (139), wherein the powder receiving input (170) of the transport nozzle (162) is configured to communicate with the feed port (139b) in a position towards the receiving body (138) on the gear (143) in an axial direction of the container body (139), characterized by the fact that the container body (138) includes at least one lifting section (138e, 138f), and the lifting section (138e, 138f) is arranged in a position to face the dust inlet (170) while inserting the transport nozzle (162).
[0002]
Dust container (38) according to claim 1, characterized in that the nozzle receiver (139) is provided to be integrally rotatable with the container body (138).
[0003]
Dust container (38) according to claim 1, characterized by the fact that the nozzle receiver (139) is rotatably supported by the container body (138).
[0004]
4. Dust container (38) according to claim 1, characterized in that the nozzle receiving hole (139a) is arranged within an outer circumference of the container body (138), and a central part of the nozzle receiving orifice (139a) is displaced from the center of rotation of the container body (138).
[0005]
5. Dust container (38) according to claim 4, characterized in that the central part of the nozzle receiving hole (139a) is positioned between the lowest point and the highest point upstream of a direction of rotation of the container body (138).
[0006]
Dust container (38) according to claim 5, characterized in that the nozzle receiving hole (139a) is moved to a position which corresponds to a position of the transport nozzle (162).
[0007]
7. Dust container (38) according to claim 1, characterized by the fact that it still comprises a loosening member (190; 290) configured to loosen the accumulated powder near the feed port (139b).
[0008]
8. Powder container (38) according to claim 7, characterized in that the loosening member (190; 290) protrudes from the nozzle receiver (139) towards the interior of the container body (138).
[0009]
Dust container (38) according to claim 7, characterized in that the loosening member (190; 290) is moved in one direction of movement of the plug (140) in conjunction with the opening and opening operations close the shutter (140).
[0010]
10. Powder container (38) according to claim 1, characterized in that the container body (138) includes a helical projection and configured to transport powder contained therein from the first side of the end to the second side the end of it by auto-rotation.
[0011]
11. Dust container (38) according to claim 1, characterized in that the gear (143) is integral with the container body (138).
[0012]
12. Powder container (38) according to claim 9, characterized by the fact that the loosening member (190; 290) moves to and from a first position and a second position along with the movement of the plug (140), the first position located between the feed port (139b) and the second side of the container body end (138), the second position located between the feed port (139b) and the first end side of the container body (138).
[0013]
13. Dust supply device characterized by the fact that it comprises: a dust container (38); a transport nozzle (162) inserted into the powder container (138) and including a powder receiving port (170) in which a toner such as powder is supplied from the powder port (139b) of the powder container (138 ); and a transport path (161) connected to the transport nozzle (162) and a developing device (5) and configured to transport the supplied toner from the transport nozzle (162) to the developing device (5), in which the container of powder is the powder container (38) as defined in claim 1.
[0014]
14. Imaging apparatus characterized by the fact that it comprises the powder supply device as defined in claim 13.

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法律状态:
2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2019-10-29| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2020-09-29| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2020-12-29| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 02/12/2011, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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JP2010-270370|2010-12-03|

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JP2010270370|2010-12-03|

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JP2011197303A|JP5786572B2|2011-09-09|2011-09-09|Powder container, powder supply device, and image forming apparatus|

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JP2011-197303|2011-09-09|

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PCT/JP2011/078626|WO2012074139A1|2010-12-03|2011-12-02|Powder container, powder supply device and image forming apparatus|

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