• 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:
    Use: two-sided printing on sheet material, in particular banknotes. SUMMARY OF THE INVENTION A role printing press, preferably designed for printing banknotes, has two printing cylinders located close to each other, each of which interacts with several offset cylinders. Each blanket cylinder is rolled by an ink cylinder that receives ink from its inking apparatus. The paper web passes respectively between printing cylinders and offset cylinders, which initially partially covers one printing cylinder, and then in the opposite direction, so that both sides of the paper are successively sealed directly separate. paints. All offset and plate cylinders that interact with the printing cylinder are located respectively on the common machine frame. Therefore, in order to change the offset and plate cylinders to cylinders of a different diameter to change the format, the entire frame of the machine is replaced with corresponding cylinders. 11 з п. Ф-лы, 2 Il. cl
    公开号:SU1757451A3
    申请号:SU894614041
    申请日:1989-05-17
    公开日:1992-08-23
    发明作者:Йозеф Германн Альбрехт
    申请人:Де Ла Рю Жиори С.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the printing industry, and in particular to a role-playing printing press for duplex printing, in particular banknotes.
    A known printing press, in which both cylinders are offset cylinders pressed together, each of which is painted with different ink by several offset plate cylinders, paper passes through a printing slot between the two offset cylinders, and simultaneously on both sides is printed correspondingly printed on the corresponding offset cylinder multicolor pattern.
    This two-sided printing machine ensures perfect transparent registration, i.e. perfect register of both
    prints on the front and back of the paper, as both sides of the paper are sealed at the same time. However, the amount of paint transported from the offset cylinders or the thickness of the layers of paint deposited on the offset cylinder is limited. The limitation follows from the principle of operation of this press.
    If it is desirable to print a relatively large amount of ink on paper, and if it is necessary to avoid problems associated with the buildup of various inks on the blanket cylinder, then it is necessary to ensure that individual inks are printed directly onto the paper and only there are layered. However, in working in accordance with this method
    four
    SL
     SA)
    A clear registration problem arises when the machine is supposed to produce double-sided printing. Indeed, in fact, by directly applying individual inks to paper, only one side of the paper can correspondingly be stained, and with the help of these known machines it is extremely difficult, if not impossible, to create and maintain processes that are simultaneously and locally carried out sequentially on one side and then on the other side of the paper. perfect transparent register Minor deviations from the correct position of the paper during its transportation and minimal changes in the paper tension between both printing processes result in register errors. However, even minor errors with transparent wiring are unacceptable.
    In addition, conventional roller presses, which operate at a constant web speed, make it possible to manufacture only a specific format, which is determined by the diameter of the form cylinders installed in the main frame.
    The invention is based on the task of creating a role-playing printing press, with the help of which a perfect transparent register is created and maintained during printing and which can be transformed in order to produce various formats, in particular various banknote formats.
    The role printing machine is preferably a multi-color offset printing press, i.e. indirectly by a printing machine, in which the inks from the forme cylinders are transferred, respectively, with the help of offset cylinders, each of which is painted with one forme cylinder, on paper, these offset cylinders together with the forme cylinders are installed in one and another replaceable machine frame. In the case of an offset printing machine, this can be a dry offset printing machine working in accordance with the printing offset method or an offset printing machine with shape moistening or also a printing machine operating partly with plate-type letterpress printing and partly with offset printing plates. with moistening form.
    However, the role-printing machine can also operate in accordance with the method of direct letterpress printing, whereby the printing cylinders are directly
    but paint the paper without the offset cylinders inserted in between.
    Since, in accordance with the invention, the paper web must be transferred directly from one printing cylinder to a closely spaced printing cylinder and therefore does not have to pass through the free space or even be guided between both
    printing processes with the help of a guide, preferably, a constant tension of the paper web is ensured and thus a perfect transparent register, since the errors of the register between the printing operation on the front and back side are practically excluded. In addition, a technical advantage is obtained in that, in order to change the role-based printing press from one format to another, it is necessary to replace both machines in which installed plate or offset cylinders with the appropriate format diameter, in general, on the other machine frames,
    Form or offset cylinders of which have a diameter corresponding to another desired format. This replacement of entire machine frames, which form pre-prepared adjacent cylinder modules, can be carried out much easier and faster than if it were necessary to replace numerous form or offset cylinders separately in the main frame of the machine,
    In order to carry out a register-retaining transfer of the paper web from the first printing cylinder to the second one in a particularly reliable way, the distance between the two printing cylinders can be set
    preferably depending on the paper thickness and has only the amount required for the passage of paper between the two printing cylinders, so that the transition of paper from the first printing cylinder to the second
    the printing cylinder is carried out directly. In this case, for example, the clamping force between the two printing cylinders is at least approximately equal to that pressing force, with
    which are pressed printing and offset or plate cylinders to each other in the formation of the printing gap.
    FIG. 1 schematically shows a roller press; in fig. 2 - one of the replaceable frames of the machine, and for the uppermost cylinder of the cylinder, the colorful and rolling rollers of the corresponding dyeing apparatus are shown conjugated to it
    In the main frame 1 of the machine, rows of two printing cylinders 2 and 3 are mounted with each other which are driven in the direction of the curved arrows, and their gears in order to achieve perfectly synchronous rotation in opposite directions are directly meshed with each other. no gap Both print cylinders 2 and 3 have seamless closed side surfaces of solid material, preferably metal. Four offset cylinders 4 are located along the perimeter of the printing cylinder 2, each of which is in contact with the printing cylinder 5 of the same diameter. Each plate cylinder 5 is painted with its own inking apparatus. The three upper plate cylinders 5 include three inking machines 9 with dual colorful tanks, and the bottom plate cylinder 5 includes inking machine 9, with a single colorful tank. In the considered example, we are talking about offset printing with the moistening of the form and therefore a humidifying device 9a is associated with each of the colorful devices 9.9. All paint units 9, 9 with their wetting units 9a are mounted on a retractable frame 8 of the paint unit, which moves along the rollers 8a, and its depressed position 8 is shown by a dotted line. The offset cylinders 4 and the forme cylinders 5 are installed depending on the main frame 1 on the interchangeable frame 15 of the machine.
    Mirror-symmetrically with the printing cylinder 3 related to the printing cylinder 2 by the described system, the printing cylinder 3 interacts with four offset cylinders 6, which are in contact respectively with the printing cylinder 7 of the same diameter. In the corresponding frame 8 of the inking unit set off on the rollers of the Yua frame 10 inking apparatus, the pressed position
    10 which is depicted with a dotted line, three colorful devices are installed again.
    11 with double colorful reservoirs for painting the three upper plate cylinders 7 and one inking machine 11 with a single colorful reservoir for painting the lower plate cylinder 7.
    One wetting device 11a is again matched with all colorful devices. The offset cylinders 6 and the forme cylinders 7 are installed in another interchangeable frame 16 of the machine, also independent of the main frame 1.
    Both frames 15 and 16 of the machine form replaceable modules of the form and offset cylinders.
    The paper web P passes through the guide and tension rollers 12 in the direction of the arrows, first covers the printing cylinder 2, and when passing between the printing cylinder 2 and the colored offset cylinders 4, one side of the paper is directly sealed with individual colors, and then covers in the other direction printing cylinder 3, and when passing between this printing cylinder 3 and colored offset cylinders 6 of the other side of the paper is also directly sealed with separate colors the sheets P from the printing cylinder 2 to the printing cylinder 3 are carried out directly, without necessarily passing the paper sheet through the free space, the distance between the printing cylinders 2 and 3 is chosen just such that the paper sheet P. can pass between them. With this chain the distance between the two printing cylinders 2 and 3 can be adjusted as a function of the paper thickness. Due to this direct transition of the paper web from the printing cylinder 2 and the printing cylinder 3, the tension of the paper is kept completely constant. It is especially advantageous if the paper web as much as possible covers the printing cylinders. Thus, in the considered example, approximately three-quarters of the circumference of the printing cylinder 2 and more than half of the circumference of the printing cylinder 3 are covered with paper.
    In order to carry out the register-keeping transfer of the paper web 7 from the printing cylinder 2 to the printing cylinder Zp, it is especially reliable, the pressing force between the two printing cylinders can be, for example, at least approximately equal to the pressing force with which the printing cylinder 2 is pressed to each other, 3 and the offset cylinder 4, 6 in the formation of a printing slot,
    Constant tension ensures perfect transparent registration, which is important when printing banknotes for reasons of quality and protection against forgery. Thus, both sides of the banknotes can be at least partially sealed with the same patterns and patterns and the same colors and, based on the perfect register achieved in duplex printing, are located exactly one above the other, so that one side of the banknotes with respect to these patterns and patterns is accurate. a mirror image of the other side of the banknotes with the exception of printed texts and numbers.
    In the above example, ink-painted inks with double ink tanks the formeliners 5 and 7 have plates for offset printing with shape moistening, while ink-ink plates 5 and 7 for the ink-inked devices 9 and 111 are equipped with well-known intaglio intaglio plates. In these printing plates, the recess-limiting material is a paint absorbing and water repellent, while the surface of the printing plates outside the recesses consists of a water-absorbing material that is moistened with a dampening device 9a or 11a and thus becomes paint-repellent so that when rolled up only the grooves were filled. In this case, the pattern of each side of the banknote created by offset printing plates with wetting of the form is a three-color background that does not allow for tampering, while the said intaglio printing form creates a single-color primary pattern on each side of the banknote,
    Naturally, all of the plate cylinders 5 and 7 can also be equipped with plates for offset printing with moisture forms, which in this case, in particular, create a four-color background on each side of the banknote that is not fake. one, several or all of the forme cylinders 5 and 7 of the printing plate with a dry offset, i.e. an intaglio plate printing form, which is rolled up with ink suitable for dry offset printing without wetting the form with an inking machine. Thus, it is possible to obtain made partially or completely by dry offset printing, i.e. in offset printing, banknotes.
    Since the printing cylinders 2 and 3 have a seamless closed side surface, a certain ratio of the diameter of the printing cylinders 2 and 3 to the diameter of the offset cylinders 4, 6 and the forme cylinders 5, 7 does not matter, so that in order to change the format, the offset and form cylinders diameter which basically defines the format, can be replaced with smaller or larger offset and form cylinders. To do this, it is only necessary to replace the whole of both frames 15 and 16 of the machine with other frames of the machine, in which offset and form plates are respectively installed
    cylinders of a different diameter. In the considered example, this replacement can be carried out after the removal of both frames 8 and 10 of paint units, for example, with the help of a crane.
    The interchangeable frames 15 and 16 of the machine, which in the working position are fixed and fixed on the main frame 1, are preferably of the same design and
    0 are the same size, and the position of their bearings, designed to install the forming and offset cylinders, can be adjusted in a known manner, for example, using eccentrics. So
    5, in the same frame of the machine, the plate and offset cylinders of different diameters can be mounted, due to the fact that the position of the supporting units of the cylinders is adjusted accordingly.
    In this case, the arrangement is made in such a way that in the working positions of the frames 15 and 16 of the machine, the offset cylinders 4 and 6 occupy the correct position in which
    5, they can be brought in and out in a known manner, i.e. can be pressed for printing to the printing cylinders 2 or 3 and retracted from them to the non-operating position. The position of the forme cylinders 5 and
    0 7 is more or less offset depending on the diameter that they and offset cylinders have. In order to correspondingly align the position of the paint units 9 or 11, the paint rollers 9b of the corresponding paint apparatus 9, each of which is shaped like a cylinder 5, in particular the corresponding rolling rollers, including the humidifier 9a, are installed in a known manner with
    0 can be adjusted, for example, on a rocker arm, as shown in FIG. 2 for the uppermost inking apparatus 9. FIG. 2, the solid and dotted lines show two different positions of these paint rollers 9b and the dampening unit 9a for two offset and preformed cylinders having different sizes. Thus, interacting with plate cylinders colorful
    0 rollers can be easily adjusted in the frame of the inking apparatus, depending on the diameter of the forme cylinders.
    Corresponding adjustment of the working positions of the frames 8 and 10 of the ink sets, which can be fixed in different positions, can also contribute to the correct installation of the inking devices.
    If necessary, the adjustable arrangement of each pair, consisting of offset cylinders 4 or 6 and the plate cylinders 5 or 7, relative to the corresponding printing cylinder 2 or 3 and the corresponding inking apparatus can also be taken in such a way that when replacing the frame 15 or 16 with a different cylinder machine the diameter does not require any particular adjustment of the inking apparatus, since this does not affect the exact position of the printing cylinder on the corresponding printing cylinder
    The range of different diameters of the plate and offset cylinders can, for example, cover diameters 12% larger and 12% smaller with respect to the average diameter. For example, with the help of interchangeable frames 15 and 16, plate and offset cylinders can be used, the diameter of which can vary in steps from a minimum of 160 mm to a maximum of 200 mm.
    Due to the possibility of using form and offset cylinders of various sizes, the printing cylinder 2, 3 may naturally not always meet the usual otherwise condition that its diameter be an integer multiple of the diameter of the side and offset cylinders. Whenever this condition is not fulfilled, the ink of the first printed offset cylinders 4 on the paper is fresh at the next revolutions of the printing cylinders, respectively, with a slightly offset side area of the second printing cylinder 3. Therefore, it is necessary to prevent the transfer of fresh ink from the printed side of the paper to the second printing cylinder 3, if the same second printing cylinder with the same surface characteristics is to be continuously used laziness of different formats, ie in combination with plate and offset cylinders with respectively different diameters.
    The surface of the printing cylinder 3 is preferably composed of a smooth metal layer or a metal plate in accordance with the type of plate for offset printing with the wetting of the mold, which is moistened with the help of the dampening apparatus 13. This prevents the transfer of ink to the surface of the printing cylinder 3, when the paper web P is attached to its print cylinder 3 with its previously sealed press.
    Instead, the measure can also be placed on the printing cylinder 2 of the printing sheet P after it has been sealed and, prior to its transition to the printing cylinder 3, exposed to a suitable drying device 14, which is installed close to the side surface.
    the printing cylinder 2 in the direction of its rotation behind the offset cylinders, as shown by the dotted line in FIG. 1. In this case, for example, we can talk about acting with the help of ultraviolet
    0 radiation drying A similar drying device may also be provided near the side surface of another printing cylinder 3. Preferably, these drying devices are combined with
    5 cooling devices to be able to control the temperature of both cylinders.
    Preferably, fast drying paints can also be used, the drying of which, if necessary, is accelerated by a drying device.
    If the printing cylinder 3 has a surface according to the type of plate
    5 for offset printing with wet form, the surface of the other cylinder preferably consists of metal, in particular steel. In another case, if the work is carried out with a drying device, both print cylinders 2 and 3 may consist of steel or have a different hard surface.
    As long as the condition is satisfied that the diameter of the printing cylinders 2, 3 is an integral multiple of the diameter of the form and offset cylinders, the surface of the printing cylinder 3 may also have, for example, a layer of chromium with micro-grain, which can be easily returned to absorption with fresh printed the sides of the paper are painted, so that a color balance between this layer of chromium and the adjacent printed side of the paper is set in place. The same result can also be obtained by
    5 other surface layers, which, in contact with printing inks, result in such a color balance, for example, using a layer of rubber in accordance with the type of offset rubber tires.
    0 In the considered example, the ratio of the diameter of the printing cylinders 2 and 3 to the diameter of the offset and printing cylinders is 3: 1, which in general, on each side represents space for four wearable inks. However, the diameter ratio may also be less, for example 2.1, or more, in particular 4-1. so in this case the space available on the side surface of the printing cylinders is sufficient for each
    in the first case, for example, three, and in the second case, five paints.
    One of the plate cylinders, at least on one side of the machine, may have a collective printing form for color printing, also called an Orlov printing form, which refers to a collection printing machine. In this case, the prefab printed plate mounted on the form cylinder, in this case, it can be a plate print of high printing, rolled up by paint by a roll-up collecting cylinder, which in turn receives paint from several colorful selective rollers, also called stencil rollers, each of which rolls paint your own colorful hardware. The multi-color pattern of the color ink plate is transferred in this case by the corresponding offset cylinder 4 or / and 6 to the corresponding side of the paper. This kind of measure further enhances the protection against counterfeiting.
    If necessary, the role-based printing press according to the invention can also be equipped for direct letterpress. In this case, the printing cylinders rolled up by their inking machine with an appropriate ink, for printing, when they pass the offset cylinders, are pressed directly against the printing cylinders 2 or 3 and are printed directly onto the paper. For this purpose, both printing cylinders 2 and 3 should have a somewhat elastic surface, in which case they preferably have a layer of rubber or rubber tires.
    权利要求:
    Claims (12)
    [1]
    1. Role-type printing machine for double-sided printing, in particular, banknotes, containing printing cylinders mounted on a rack adjacent to each other, each of which is in contact with corresponding offset and printing cylinders equipped with inking rollers with rolling rollers and placed on sliding frames , characterized in that, in order to expand technological capabilities by providing printing of banknotes of various formats, it has interchangeable frames installed between the sliding frames and the counter; The plates or plates and the contact cylinders that are in contact with them are installed, while the printing cylinders have a seamless closed surface.
    [2]
    2. The machine according to claim 1, characterized in that it has means for adjusting the distance between the printing cylinders depending on the thickness of the paper.
    [3]
    3. The machine according to claim 1, characterized in that the interchangeable frames are made identical in size and design and have reversible, in particular, eccentric
    bearings for the installation of plate and offset cylinders of various diameters.
    [4]
    4 A machine according to claim 1, characterized in that it has a means for adjusting the position of the paint rolling rollers.
    apparatus relative to the corresponding plate cylinders.
    [5]
    5. The machine according to claim 1, characterized in that it is provided with a means of countering the second one in the course of the process of the printing cylinder.
    [6]
    6. The machine according to claim 1, characterized in that it is provided with a drying device with temperature control means installed in the transition zone of the printed web from the first to the second printing cylinder during the process.
    [7]
    7. The machine according to claim 1, characterized in that the second along the process
    The printing cylinder is provided with a metal plate or a suitable metal coating for wet offset printing and a wetting machine.
    [8]
    8. Machine on PP. 1 and 7, characterized in that the coating of the second printing cylinder consists of chromium with a microgranular structure.
    [9]
    9.Mashina on PP. 1 and 7, different from that. that when her work in dry mode or
    wet offset printing cylinders are coated with a hard material, and at least the first printing cylinder during the process, has a metal coating, in particular steel.
    [10]
    10. Machine pop, 1, characterized in that when operating in the printing mode, the printing cylinders have an elastic surface, preferably rubber.
    [11]
    11. The machine according to claim 1, characterized in that at least one of the forme cylinders is in the form of intaglio printing and
    equipped with a humidifier.
    [12]
    12. The machine according to claim 1, characterized in that one of the forme cylinders has a composite printing form for color ink.
    , 9a
    类似技术:
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    SE8005101L|1980-07-11|ROTATION PRESSURE FOR MULTIPLE PRESSURE
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    NL8500167A|1986-08-18|MULTI-COLOR ROTATION PRINTS FOR SIMULTANEOUS CLEAN AND WEATHER PRESSURE.
    FI72685C|1987-07-10|Printing device for a collector printing rotary machine for printing hot papers.
    RU1774923C|1992-11-07|Multidie printing machine
    JP2000071424A5|2000-03-07|
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    SU1340576A3|1987-09-23|Multicolour rotary perfecting web-sheet-fed press
    US20070272104A1|2007-11-29|Coating device
    CN101573237A|2009-11-04|Multi-color printing machine having a foil transfer device
    GB2096058A|1982-10-13|Collect-printing unit for security printing for use in a rotary printing press
    同族专利:
    公开号 | 公开日
    AU3463589A|1989-11-23|
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    CA1331934C|1994-09-13|
    CN1038790A|1990-01-17|
    EP0343104A2|1989-11-23|
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    EP0343104A3|1990-08-08|
    KR900017784A|1990-12-20|
    AU606518B2|1991-02-07|
    DD283788A5|1990-10-24|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH188688|1988-05-18|
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