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公开(公告)号：US4941002A
公开(公告)日：1990-07-10
申请号：US397903
申请日：1989-08-24
CPC分类号： G03G15/6508 , G03G15/04045 , G03G15/326 , G03G15/6502 , G03G21/1633 , G03G21/1652 , G03G2215/00316 , G03G2215/00383 , G03G2215/00413 , G03G2215/00544 , G03G2221/163 , G03G2221/1636 , G03G2221/1654 , G03G2221/1672 , G03G2221/1675 , G03G2221/18 , G03G2221/183
摘要： In a page printer, a gate roller, a developing unit, a photo-sensitive drum unit, a fixing unit and a sheet discharging roller are mounted on the open front side of a housing body in the order stated from above, thus forming a substantially vertical sheet conveying path. As a result, the installation floor area is reduced. In the rear portion of the housing, and a transferring unit and a sheet guide member are provided on the cover of the housing body. Thus, the light beam generating unit and the photo-sensitive drum are maintained unchanged in position at all times. A cut sheet feeder is mounted over the housing body so that it is movable back and forth, thus facilitating the inspection and maintenance of the printer.
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公开(公告)号：US5245357A
公开(公告)日：1993-09-14
申请号：US887585
申请日：1992-05-20
IPC分类号： G03G21/16
CPC分类号： G03G21/1853 , G03G21/1609 , G03G21/1633 , G03G2221/1651 , G03G2221/1654 , G03G2221/1672 , G03G2221/1678 , G03G2221/1846
摘要： A page printer having a housing body and including a gate roller, a developing unit, a photosensitive drum unit, a fixing unit and a sheet discharging roller arranged on the front side of the housing body in the order stated from above so that the printing sheet conveying path is substantially vertical to reduce floor area required for installation. An optical writing unit is provided on the rear side of the housing body. Guide members are provided on the housing body to readily mount or demount the photo-sensitive drum unit. Further, a shield board is disposed between the photo-sensitive drum unit and the fixing unit so that the printing sheet will not be stained by toner scattering from the photo-sensitive drum.
摘要翻译： 一种具有壳体的页面打印机，其具有以上述顺序从壳体的前侧布置的门辊，显影单元，感光鼓单元，定影单元和排纸辊，使得打印纸 输送路径基本垂直，以减少安装所需的楼面面积。 光学写入单元设置在壳体的后侧。 引导构件设置在壳体上以容易地安装或拆卸感光鼓单元。 此外，屏蔽板设置在感光鼓单元和定影单元之间，使得打印纸不会被来自感光鼓的调色剂飞散而被污染。
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公开(公告)号：USRE34948E
公开(公告)日：1995-05-23
申请号：US294085
申请日：1989-01-06
申请人： Hiroyuki Aizawa , Mitsuaki Maruyama , Shigeru Sawada , Yasuhiro Gyoutoku , Hiroshi Niki , Kouichi Higashimura , Kenji Aoki
发明人： Hiroyuki Aizawa , Mitsuaki Maruyama , Shigeru Sawada , Yasuhiro Gyoutoku , Hiroshi Niki , Kouichi Higashimura , Kenji Aoki
CPC分类号： G03G21/1814 , G03G15/30 , G03G15/65 , G03G21/1633 , G03G2215/00371 , G03G2215/00383 , G03G2215/00413 , G03G2215/00421 , G03G2215/00544 , G03G2221/16 , G03G2221/1636 , G03G2221/1642 , G03G2221/1654 , G03G2221/1672 , G03G2221/1675 , G03G2221/1678 , G03G2221/1687 , G03G2221/169 , G03G2221/1693 , G03G2221/183 , G03G2221/1846
摘要： An image forming apparatus employing a face-down delivery system in which the plane of the recording medium at any position relative to any other position assumed by the recording medium beginning with a stacking tray and ending with a delivery tray does not exceed 90.degree.. The apparatus includes a detachable cartridge which includes a photosensitive member, a charging device and a cleaning device. In one preferred embodiment, register rollers and fixing rollers are positioned relative to each other such that a substantially zero angular deviation exists in the path traveled by the recording medium between these two pairs of rollers.
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公开(公告)号：US4945364A
公开(公告)日：1990-07-31
申请号：US403309
申请日：1989-09-06
IPC分类号： G03G21/16
CPC分类号： G03G21/1832 , G03G21/1633 , G03G21/1652 , G03G21/1853 , G03G2221/1651 , G03G2221/1654 , G03G2221/1672 , G03G2221/1678 , G03G2221/1846
摘要： A page printer having a housing body and including a gate roller, a developing unit, a photo-sensitive drum unit, a fixing unit and a sheet discharging roller arranged on the front side of the housing body in the order stated from above so that the printing sheet conveying path is substantially vertical to reduce floor area required for installation. An optical writing unit is provided on the rear side of the housing body. Guide members are provided on the housing body to readily mount or demount the photo-sensitive drum unit. Further, a shield board is disposed between the photo-sensitive drum unit and the fixing unit so that the printing sheet will not be stained by toner scattering from the photo-sensitive drum.
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公开(公告)号：US4754293A
公开(公告)日：1988-06-28
申请号：US33371
申请日：1987-04-02
申请人： Hiroyuki Aizawa , Mitsuaki Maruyama , Shigeru Sawada , Yasuhiro Gyoutoku , Hiroshi Niki , Kouichi Higashimura , Kenji Aoki
发明人： Hiroyuki Aizawa , Mitsuaki Maruyama , Shigeru Sawada , Yasuhiro Gyoutoku , Hiroshi Niki , Kouichi Higashimura , Kenji Aoki
CPC分类号： G03G21/1814 , G03G15/30 , G03G15/65 , G03G21/1633 , G03G2215/00371 , G03G2215/00383 , G03G2215/00413 , G03G2215/00421 , G03G2215/00544 , G03G2221/16 , G03G2221/1636 , G03G2221/1642 , G03G2221/1654 , G03G2221/1672 , G03G2221/1675 , G03G2221/1678 , G03G2221/1687 , G03G2221/169 , G03G2221/1693 , G03G2221/183 , G03G2221/1846
摘要： An image forming apparatus employing a face-down delivery system in which the plane of the recording medium at any position relative to any other position assumed by the recording medium beginning with a stacking tray and ending with a delivery tray does not exceed 90.degree.. The apparatus includes a detachable cartridge which includes a photosensitive member, a charging device and a cleaning device. In one preferred embodiment, register rollers and fixing rollers are positioned relative to each other such that a substantially zero angular deviation exists in the path traveled by the recording medium between these two pairs of rollers.
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公开(公告)号：US5001516A
公开(公告)日：1991-03-19
申请号：US410629
申请日：1989-09-21
CPC分类号： G03G15/00 , G03G15/326 , G03G21/1633 , G03G21/1652 , G03G2221/1651 , G03G2221/1672 , G03G2221/1675 , G03G2221/169 , G03G2221/18
摘要： A page printer is provided which includes a housing having a lateral side plate that is formed from an electrically conductive material, with a gate roller, a developing unit, a photosensitive drum unit, a fixing unit and a paper discharging roller mounted in the housing. The electronic circuitry for controlling the page printer is disposed in a side portion of the housing with the lateral side plate disposed between the electronic circuitry and the units.
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