• 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:
    ROLLED ROLL DIODED OFFSET PRINTING MUSHYA FOR BILATERAL PRINTING, containing at least two printing units and a device for preventing ink deposition on the printing cylinder, intended for printing on the back side of the printed paper web of the printing section, which is on the back side of the printed paper web of the printing section, which is used for printing on the back side of the printed paper web of the printing section, which is used for printing on the reverse side of the printed paper web of the printing section, which, by the way, the device, which had to be printed, can be printed on the back side of the printed paper web of the printing section, can be used with the printing cylinder on the back side of the printed paper web of the printing section, and the device can be printed on the back side of the processed paper web of the printing section. on the printing cylinder is placed between the printing sections and contains a cleaning cylinder for the interaction of the surface with the sealed side of the treated lotna, means its surface deinking and at least one roller for pressing the treated web to the purifying cylinder. (L
    公开号:SU1172748A1
    申请号:SU807771413
    申请日:1980-10-10
    公开日:1985-08-15
    发明作者:Харалд Феустел
    申请人:Феб Комбинат Полиграф "Вернер Ламберц"；
    IPC主号:
    专利说明:

    The invention relates to a roll-over company of offset printing machines for printing newspapers, comprising at least two printing units.
    Typically, in a rotary offset printing press consisting of two printing units, one side of the paper web is sealed in one and the other in the second printing unit. When this is sealed in the first printing unit, the side of the paper web when sealing the second side of the web in the second printing unit is adjacent to the surface of the printing cylinder of the second printing unit, which leads to deposition of a part of the incompletely dried ink on the surface of this printing cylinder. The amount of this deferred ink increases with the number of inks printed in the first printing section and increases particularly with the increasing number of pressing operations affecting the paper web in the second printing section, i.e. depending on the number of colors printed in the second printing unit.
    The permanent deposition of ink on the printing cylinder leads to a decrease. print quality during the printing process and to stop the rotary printing press when the printing cylinder reaches a level of contamination that is unacceptable for quality printing. This cylinder is cleaned mainly by hand, for which it is necessary to remove the paper web. As a result, in addition to the quality of the attack and the increase in time, the consumption of paper simply increases, reducing the efficiency of the printing machine.
    To eliminate these shortcomings (Tyurin A.A. Printing machines. M .: Book, 1966, p. 362), attempts were made to reduce the deposition of paint by applying a special coating on the surface of the printing cylinder in the second printing section. These measures, however, had only marginal success and, moreover, there was difficulty in placing the coating devices on the printing cylinder. Rotary offset printing presses designed specifically for illustrative or incidental printing, in order to avoid ink deposition between the printing apparatus, are usually equipped with devices for drying the paper web. Such a dryer, however, is expensive and, in addition, consumes a large amount of energy. Therefore, on newspaper printing machines that need such a dryer only for the production of certain types of products, their use is denied.
    The purpose of the invention is to eliminate the disadvantages of existing technology and existing equipment.
    The goal is achieved by the fact that in a web-fed rotary offset printing machine for two-sided printing, containing at least two printing units and a device. To prevent ink from depositing on the printing cylinder for printing on the reverse side of the printed paper web, the specified device is placed between printing sections and contains a cleaning cylinder to interact with its surface with the sealed side of the treated web, the cleaning tool its surfaces from the paint and at least one roller for pressing the treated web against the cleaning cylinder.
    The pressing forces that cause ink to deposit on the printing cylinder affect the paper web by placing a device to prevent the paint from depositing on the printing screen between the printing sections outside the printing section, resulting in the deposition of particles that are not fully dried or printed on the paper sheet. It does not take place on the printing cylinder, but in the zone provided for in this zone, in which, moreover, the available space allows an extension of the device for cleaning and cylinder and roller, which ensures the cleaning of the roller when operating the machine.
    The drawing shows the proposed map.
    The rotary offset printing machine for duplex printing contains two printing units 1 and 2 and a device 3 for preventing ink buildup on the printing cylinder 311, intended for printing on the reverse side of the printed paper web 2 which is placed between the printing sections 1 and 2 and consists of a cleaning cylinder 4 for contacting the surface with the printed side of the paper. a cloth, means 5 for cleaning the surface of the cylinder 4 from paint and at least one roll 6 for press the paper web to the cylinder 4. The tool 5 for cleaning the cylinder 4 can only include a squeegee 7 or a squeegee 7 and a brush roller 8. In both printing sections 1 and 2, the printing cylinders 9 and 10 are in contact with offset distances 11 and 12. Refilled paper sheet 13 in the roll rotary offset printing machine moves from the printing section 1 through the device 3 and through the last traction device with cooling roller 14 driven to the printing section 2. The process of printing the paper web 13 when the offset cylinders 11 and 12 are installed Each 4 printed pages 1 and 2 are printed with four colors. The paper web 13 printed on the printing section 1 (hry pass; | (the device 3 adjoins its printed side to the mold 4; at the same time, each eatsmK 6 is installed with a pressing force approximately corresponding to the pressure of the offset 11 or 12 on the printing cylinder 9 10. As a result, on the line of contact between the cylinder 4 and the rollers 6, the passing paper paper is subjected to constant pressure, which leads to a permanent deposition of paint The printing section on the printing cylinder of the second printing section does not deposit paint completely or only slightly. If a paper grade is used with a very large absorbency, one roller 6 can provide a sufficient deposit effect. The tool 5 can be used to clean the cylinder 4 while the machine is running. that is, for such an operation there is no need to shut down the entire machine.
    权利要求:
    Claims (1)
    [1]
    ROLLED ROTARY OFFSET PRINTING MACHINE FOR TWO-SIDED PRINTING, containing at least two printing sections and a device for preventing ink deposition on a printing cylinder for printing on the reverse side of the processed paper web of the printing section, characterized in that it is a device for preventing ink deposition on the printing cylinder is located between the printing sections and contains a cleaning cylinder for interaction of the surface with the sealed side of the processed fabric , Cleaning means the surface of the paint and at least one roller for pressing the treated web to the purifying cylinder.
    1 1172748 2
    类似技术:
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    US20070272104A1|2007-11-29|Coating device
    US20080184905A1|2008-08-07|Method of Operating a Dampening Unit in a Printing Press and Printing Press Having a Dampening Unit
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    同族专利:
    公开号 | 公开日
    DD146916A1|1981-03-11|
    CS230968B1|1984-09-17|
    BG37274A1|1985-05-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AU579278B2|1986-04-28|1988-11-17|Nikka Kabushiki Kaisha|Washing method and apparatus for guide rollers of rotary press|
    DE3844770C2|1988-11-15|1994-05-26|Baldwin Gegenheimer Gmbh|Wiper for pressure cylinder of rotary printing machine|
    DE4231263A1|1992-09-18|1994-03-24|Heidelberger Druckmasch Ag|Printing unit device of a web printing machine with anti-smear device|
    DE4437018B4|1994-10-17|2004-07-01|Baldwin Germany Gmbh|press|
    DE19860858A1|1998-12-31|2000-07-06|Koenig & Bauer Ag|Devices for cleaning a roller|
    CN108284663B|2017-12-29|2019-12-13|陕西北人印刷机械有限责任公司|Ink pressure regulating and controlling method for satellite type offset press|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD21688779A|DD146916A1|1979-11-14|1979-11-14|DEVICE FOR PREVENTING THE STORAGE OF PRINTING COLOR ON THE PRESSURE CYLINDER|
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