• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A pre-development exposure assembly is provided within an electrostatic reproduction machine transverse to the photoconductive surface thereof to selectively expose side portions of the photoconductive surface in response to a signal generated by a switch associated with the paper supply assembly responsive to paper size therein.
    公开号:SU902680A3
    申请号:SU721870826
    申请日:1972-12-29
    公开日:1982-01-30
    发明作者:Э.Ликти Карл
    申请人:Ксерокс Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    one
    This invention relates to an electrostatic photograph, namely an electrophotographic apparatus.
    An electrophotographic copying apparatus is known, which contains an electrophotographic carrier, charging, exposing, developing, transferring, fixing an image, a discharge device with a light source and a paper feeding device Sh.
    A disadvantage of the known electrophotographic copying machine is the low quality of the copies obtained.
    The purpose of the invention is to improve the quality of copies by neutralizing the charges on the non-exposed side portions of the electrophotographic carrier, depending on the size of paper used.
    This goal is achieved by the fact that the proposed electrophotographic apparatus further comprises a microswitch connected to a discharge device and mounted on a paper-compatible device.
    FIG. 1 shows the proposed electrophotographic copying machine, general view; in fig. 2 - the same, top view; on 4ig. 3 - section AA
    5 of FIG. 2
    The electrophotographic photocopier contains a transparent stop 1 fixed on the lighting device 2 and mounted on the left
    10 edge of the machine.
    On table 1, document 3 is placed, from which a copy is taken. Light clouds from a light source refresh document 3, creating an image that
    15 is projected by the optical system onto the photosensitive surface of the electrophotographic carrier 4 located on the tape 5.
    20Electrophotographic carrier 4
    权利要求:
    Claims (1)
    [1]
    consists of a photoconductive layer of selenium deposited on a substrate, which is injected into the light-perceiving surface and the medium carrying the image in the apparatus. . 390 The surface of the carrier 4 is made photo sensitive due to the wep 6 charge, the key creating the corona charge. The carrier 4 is mounted on three rollers 7, 8 and 9 parallel to the axes to dry the continuous movement. Tape 5 is movably mounted on two carrier shafts 10 and 11 with roller 9 rotating on shaft 1O driven by engine and gearbox (not shown) at constant speed in the direction of the arrow. During the exposure of the carrier 4, the exported part is walking between the rollers 7 and B. During the movement of the carrier 4, the reflected light image of the document 3 is transferred to the surface of the carrier 4 to create a latent electrostatic image in the exposure unit 12. The electrostatic image then passes through the manifestation unit 13 in which the developing device 14 is installed. The developing device 14 provides for the development of the electrostatic image by means of brushes 15. The developed electrostatic image is transmitted by the carrier 4 to the transfer unit 16, in which the sheet the transfer paper is moved between the transfer roller and the carrier at a speed equal to the speed of the moving belt 5 to ensure the transfer of the generated image only by applying an electric displacement per roll to transfer In the transfer unit 16, a paper feeder 17 is installed for feeding paper from the magazine 18 with a paper supply to the developed image on the carrier 4. After removing the sheet from the carrier 4, it is transferred to the image fixing unit 19, in which the developed The xerographic image finally fixes the powder, after which the copy goes out of the apparatus into the place for laying. Inside the apparatus, a discharge device 2O is installed with a light source, which consists of a casing 21, a base 22 and fluorescent lamps 23 and 24. The casing 21 has an upper wall 25, side walls 26 and 27 and outer walls 28 and 29. Inside the casing 21 there is an intermediate DZ wall forming chambers 31 and 32 in which fluorescent lamps 23 and 24 are placed. 0 Top wall 25 has pairs of connecting slots 33 and 34 through which ultraviolet radiation passes pamp 23 and 24. Discharge device 2 O contains locks 35 for installing it inside the machine. Each of the fluorescent lamps 23 and 24 is equipped with a control circuit, and each of these circuits receives a signal from a microswitch installed on the paper feeder 17. In the mode, for example, when the maximum paper size from the magazine 18 corresponds to the size of the document to be copied, none control circuits associated with the respective fluorescent lamps are not included. If the microswitch signals that the paper in the magazine is smaller than the maximum specified magazine size, then a suitable control system is activated, whereby the appropriate fluorescent lamp is ignited to continuously expose the side portions of the photoconductive surface (t. that is, the cylindrical surfaces of the roller 8) of the corresponding area defined by the width of a pair of slots through which the light passes. In the absence of such exposure, the developer particles adhere to the ™ ™ photoconductive surface. Because in this case not. there are surfaces that receive images. with sufficient dimensions in the transfer unit 16, some of the particles of the particles stick to the transfer roller, which further requires cleaning, while the rest of the particles of particles adhering to the carrier are removed with a brush Zo. Claims of the Invention Electrophotographic copying machine comprising an electrophotographic carrier, charging, exposing, developing, transferring, image sticking units, a discharge device with a light source and a paper feeding device, characterized in that, in order to improve the quality of copies by neutralizing the charge Dovs on non-exposed side portions of an electrophotographic carrier in a dependent 59О268О6
    Ty from the format of the paper used, the sources of information,
    contains a microperforator, connected-taken into account during the examination
    with a bit device) and set-1. Copyright certificate SSHR
    Lenny on the paper feeding device. № 421213. кп. G OZ G 15 / OO, 1968.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU902680A3|1982-01-30|Electrophotographic printer
    CA1141816A|1983-02-22|Light pipe for accurate erasure ofphotoconductor charge
    US3936171A|1976-02-03|Electrostatographic methods and apparatus
    US3775102A|1973-11-27|Method of electrostatically copying information on both sides of an original onto both sides of a support material
    US3838921A|1974-10-01|Photoelectrostatic copying apparatus
    US3743403A|1973-07-03|Transport assembly
    JPS55142370A|1980-11-06|Method and apparatus for two rotation one copy type electrophotography by wet development
    US3751155A|1973-08-07|Pre-development exposure assembly
    US3984182A|1976-10-05|Pretransfer conditioning for electrostatic printing
    JPS59157661A|1984-09-07|Image forming device
    US3941592A|1976-03-02|Electrophotographic method of transferring toner image
    JPS5793358A|1982-06-10|Electrophotographic device for copying plural sheets
    JPS5695257A|1981-08-01|Multisheet copying method
    JP3025070B2|2000-03-27|Electrophotographic equipment
    JPS62194261A|1987-08-26|Light beam printer
    JP3534500B2|2004-06-07|Image forming device
    SU1748137A1|1992-07-15|Single-exposure electrophotographic apparatus for producing multiple copies
    JPS6232482A|1987-02-12|Copying device
    JPS54115139A|1979-09-07|Electrophotographic apparatus
    US3733123A|1973-05-15|Method and apparatus for enclosing a lamp
    SU959027A1|1982-09-15|Copying apparatus
    JPS55163549A|1980-12-19|Electrophotographic copying machine
    GB1198306A|1970-07-08|Image Reproduction Method and Apparatus
    GB1016265A|1966-01-05|Improvements in document reproducing apparatus
    JPS60181758A|1985-09-17|Copying apparatus
    同族专利:
    公开号 | 公开日
    FR2167109A5|1973-08-17|
    AU466757B2|1974-07-04|
    DE2260555B2|1978-12-14|
    CS175444B2|1977-05-31|
    US3809472A|1974-05-07|
    AR196103A1|1973-11-30|
    NL7217766A|1973-07-03|
    BR7208623D0|1973-09-13|
    IL41129A|1977-01-31|
    JPS4878940A|1973-10-23|
    GB1415170A|1975-11-26|
    CH552841A|1974-08-15|
    IT973319B|1974-06-10|
    CA1025513A|1978-01-31|
    IL41129D0|1973-02-28|
    JPS5756072B2|1982-11-27|
    BE793559A|1973-06-29|
    DD102825A5|1973-12-20|
    ZA729132B|1973-10-31|
    AU5058572A|1974-07-04|
    SE375388B|1975-04-14|
    DE2260555A1|1973-07-05|
    DK134831B|1977-01-24|
    ES410172A1|1976-01-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2927516A|1955-12-21|1960-03-08|Ibm|Record card controlled electro-graphic printer|
    US3122455A|1960-12-30|1964-02-25|Xerox Corp|Xerographic toner dispenser|
    GB1181214A|1966-04-07|1970-02-11|Charles William Clark|Photographic Machines|
    GB1248945A|1967-12-26|1971-10-06|Rank Xerox Ltd|Electrophotography|
    US3708161A|1968-01-22|1973-01-02|Addressograph Multigraph|Photoelectrostatic copying machine|
    US3556655A|1968-01-22|1971-01-19|Addressograph Multigraph|Photoelectrostatic copying machine|
    US3578970A|1968-05-03|1971-05-18|Plastic Coating Corp|Variable width corona discharge apparatus with means to shield or vary a predetermined length of a corona discharge wire|
    US3612682A|1968-06-07|1971-10-12|Addressograph Multigraph|Copier-duplicator machine providing for photoelectrostatic master from which copies are made|
    BE748854A|1969-04-16|1970-09-16|Fuji Photo Film Co Ltd|ELECTROPHOTOGRAPHIC DEVICE|
    JPS5018394B1|1970-01-10|1975-06-28|
    US3671121A|1970-08-05|1972-06-20|Eastman Kodak Co|Exposure device for controlling charge on a portion of a charged surface bordering an image frame projected on the charged surface|
    JPS4943337B1|1970-09-03|1974-11-20|
    US3724940A|1970-12-07|1973-04-03|Ricoh Kk|Electrophotographic copying apparatus with means for erasing marginal images|
    US3888644A|1973-12-03|1975-06-10|Black Sivalls & Bryson Inc|Filter-separator apparatus|US3997259A|1973-11-08|1976-12-14|Xerox Corporation|Apparatus for reducing image background in electrostatic reproduction machines|
    US3834807A|1974-02-14|1974-09-10|Ibm|Copier with leading edge image control|
    JPS5444595Y2|1974-04-29|1979-12-21|
    JPS51147443U|1975-05-21|1976-11-26|
    US4046471A|1975-11-03|1977-09-06|International Business Machines Corporation|Dual mode electrophotographic apparatus having dual function printing beam|
    IT1055822B|1976-01-20|1982-01-11|Olivetti E C Spa|ELECTROPHOTOGRAPHIC COPIER MACHINE|
    JPS52155553U|1976-05-20|1977-11-25|
    JPS52155552U|1976-05-20|1977-11-25|
    JPS563715Y2|1976-07-13|1981-01-27|
    JPS53119943U|1977-03-01|1978-09-25|
    JPS6236216B2|1977-04-19|1987-08-06|Mita Industrial Co Ltd|
    JPS6211347B2|1978-01-07|1987-03-12|Ricoh Kk|
    US4272204A|1978-12-21|1981-06-09|International Business Machines Corporation|Automatic margin determining apparatus for a scanned sheet of paper|
    US4265556A|1978-12-21|1981-05-05|International Business Machines Corporation|Apparatus for setting proportional margins based upon the width of a scanned sheet of paper|
    US4255042A|1979-03-26|1981-03-10|International Business Machines Corporation|Light pipe for accurate erasure of photoconductor charge|
    JPS5674259A|1979-11-22|1981-06-19|Olympus Optical Co Ltd|Electrophotographic apparatus|
    US4279504A|1979-12-26|1981-07-21|International Business Machines Corporation|Copier and multifunction paper cassette|
    US4431301A|1980-03-12|1984-02-14|Tokyo Shibaura Denki Kabushiki Kaisha|Electrostatic copying apparatus with means for preventing contamination of reverse side of copying medium|
    JPH0431110B2|1983-12-28|1992-05-25|
    US4611906A|1985-01-22|1986-09-16|Sanyo Electric Co., Ltd.|Electrophotographic copying apparatus|
    NL8502186A|1985-08-05|1987-03-02|Oce Nederland Bv|COPIER EQUIPPED WITH ADJUSTABLE FRAMERS.|
    US4745438A|1986-09-16|1988-05-17|Xerox Corporation|Automatic copier show-around erase system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US00214244A|US3809472A|1971-12-30|1971-12-30|Pre-development exposure assembly|
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