• 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:
    1523633 Impression cylinders XEROX CORP 28 Oct 1975 [24 Feb 1975] 44305/75 Heading B6C [Also in Division B8] The impression cylinder 12 of an electrostatographic copying-machine is provided with a transverse convex or concave curve to match an opposite curve of the imaging surface. Alternatively, a curved corona generator may be used.
    公开号:SU736891A3
    申请号:SU762313404
    申请日:1976-01-13
    公开日:1980-05-25
    发明作者:Максимиак Джон
    申请人:Ксерокс Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    I
    This invention relates to electrophotography, in particular, to devices for separating copy sheets from photo image semiconductor media.
    Various devices are known for moving sheets of paper in copiers, for example, mechanical grippers, vacuum or other conveyor belts, feed rollers, wire guides 1.
    However, in all known devices in each transfer area of the sheet from one transport system to another, it is possible for the paper to get stuck, especially if the sheet stiffness is low and the sheet bends.
    The separation of a copy sheet is especially difficult at the moment of transferring the produced image onto a sheet of paper, since the image is not yet fixed and can be easily corrupted; in addition, a sheet of paper is tightly held onto the electrophotographic carrier by electrostatic needles.
    A device for separating paper with the fingers to grip the leading edge of the sheet 2 is known. However, these devices can cause mechanical damage to the surface of the carrier.
    A copy machine is known, which contains an electrophotographic image carrier, made in the form of a cylinder with successively placed nodes for charging, exposing, developing, transferring the image, fixing the image, and a node for separating the list of copy space from the cylindrical surface of the carrier in the form of a curved guide plate 3.
    However, the known device only partially solves the problem of separating the leaf of a COI FDI.
    The purpose of the invention is to increase the reliability of separation of the copy sheet from the electrophotographic carrier.
    This is achieved by the fact that the electrophotographic carrier has a barrel-shaped form.
    The invention is illustrated in the drawing.
    权利要求:
    Claims (3)
    [1]
    The convexity of the barrel-shaped carrier 1, i.e. its maximum curvature, is negligible. This does not negatively affect the operation of the copier, in particular, the quality of the copies. The guide 2 and barrel-shaped carrier 1 increase the longitudinal rigidity of the sheet 3 so that the front edge of the sheet comes into close contact with the image carrier at the time of transferring the image with the corona generator 4 and comes out of contact with the carrier due to its additional curvature. The difference between the maximum and minimum radius of curvature of the barrel-shaped carrier is 1/500. This system ensures reliable separation of sheets of copies using different types of paper. Claim 1, An electrophotographic copying device, an apparatus containing an electrophotographic carrier, made in the form of a body of rotation with successively placed nodes for charging, exposing, developing, transferring, fixing the image. And a copy sheet separation unit with an image carrier with a guide plate, characterized in that, in order to increase the reliability of separation of the copy sheet, the electrographic carrier is barrel-shaped. 2. An apparatus according to claim 1, characterized in that the difference between the maximum and minimum radii of curvature of the electrophotographic barrel carrier is from 1/100 to 1/500. Sources of information taken into account in the examination 1. US patent number 3578859, cl. 355-3, 1972.
    [2]
    2. The patent of the USSR No. 443525, cl. G 01 G 15/00, 1970.
    [3]
    3. Patent of the USSR No. 488431, cl. G 03 G 15/04, 1972 (prototype).
    3rfi-feaas-
    类似技术:
    公开号 | 公开日 | 专利标题
    SU736891A3|1980-05-25|Electrophotographic copying device
    US3856295A|1974-12-24|Inverter-reverser for a reproduction machine
    US3548783A|1970-12-22|Paper transport-sheet turner
    US4095979A|1978-06-20|Method and apparatus for producing duplex copies
    US3944212A|1976-03-16|Sheet reversing mechanism
    US4771310A|1988-09-13|Stripper finger mechanism for effecting removal of a record medium from a roll member
    US5045892A|1991-09-03|Recording paper transport mechanism
    US5565970A|1996-10-15|Image forming apparatus
    EP0407152A2|1991-01-09|Sheet stackers
    GB1481237A|1977-07-27|Reproducing apparatus and process for duplex imaging in a single pass
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    US4065121A|1977-12-27|Sheet detaching device for electrophotographic copying machine
    US4291970A|1981-09-29|Apparatus for producing duplex copies
    US3820778A|1974-06-28|Vacuum stripping roll with rotary pickup slots
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    USRE32422E|1987-05-19|Method and apparatus for producing duplex copies
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    US5120048A|1992-06-09|Dewrinkler platen belt
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    同族专利:
    公开号 | 公开日
    SE7514707L|1976-08-25|
    DE2554378A1|1976-09-02|
    GB1523633A|1978-09-06|
    IT1052087B|1981-06-20|
    FR2309910A1|1976-11-26|
    BE836791A|1976-04-16|
    NL7514879A|1976-03-31|
    AU1122176A|1977-09-01|
    FR2309910B1|1979-03-16|
    US3984183A|1976-10-05|
    SE402824B|1978-07-17|
    JPS51112351A|1976-10-04|
    CH596588A5|1978-03-15|
    CA1067111A|1979-11-27|
    JPS613421B2|1986-02-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3536397A|1967-10-13|1970-10-27|Xerox Corp|Xerographic apparatus|
    US3912256A|1972-12-29|1975-10-14|Ricoh Kk|Sheet stripping device for an electrophotographic copying apparatus|
    US3749398A|1972-01-07|1973-07-31|Tokyo Shibaura Electric Co|Apparatus for piling up sheets|
    US3884623A|1973-02-16|1975-05-20|Dyk Research Corp Van|Xerographic fuser roller|JPS58196574A|1982-05-12|1983-11-16|Ricoh Co Ltd|Recorder|
    JPH0522907B2|1983-01-10|1993-03-31|Canon Kk|
    JPH042954B2|1985-04-18|1992-01-21|
    JPH062537B2|1985-11-15|1994-01-12|三田工業株式会社|Paper transport device for copier|
    USRE34454E|1985-12-24|1993-11-23|Brother Kogyo Kabushiki Kaisha|Copying apparatus|
    US4739362A|1986-11-10|1988-04-19|Xerox Corporation|Transfer system|
    US4924273A|1989-04-18|1990-05-08|Eastman Kodak Company|Roller transfer apparatus|
    US5243385A|1992-07-28|1993-09-07|Xerox Corporation|Bowed support for belt photoreceptor to equalize blade cleaning contact pressure|
    US5282010A|1993-03-23|1994-01-25|Xerox Corporation|Stripping of paper from photoreceptor belts with reduced stress|
    US5500105A|1994-12-01|1996-03-19|Xerox Corporation|Bowed shape electroforms|
    CN1148613C|1998-01-26|2004-05-05|株式会社理光|Transfer roller and image-forming device|
    JP2000098642A|1998-09-17|2000-04-07|Canon Inc|Electrophotographic photoreceptive drum and image forming device|
    JP2000321889A|1999-03-10|2000-11-24|Ricoh Co Ltd|Image forming device|
    AU2002250097A1|2001-01-19|2002-09-04|Heidelberg Digital L.L.C.|An apparatus and method for a programmable detack charging system|
    US7194227B2|2004-08-10|2007-03-20|Xerox Corporation|Imaging member belt support module|
    JP2008058649A|2006-08-31|2008-03-13|Kyocera Corp|Electrophotographic photoreceptor and image forming apparatus equipped with the same|
    JP4294675B2|2006-10-23|2009-07-15|シャープ株式会社|Image forming apparatus, image forming method, and transfer apparatus|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/552,072|US3984183A|1975-02-24|1975-02-24|Sheet stripping from imaging surface|
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