Image forming apparatus having a cover for protecting a transfer region
of an intermediate transfer member when a door is opened
    11.
    发明授权
    Image forming apparatus having a cover for protecting a transfer region of an intermediate transfer member when a door is opened 失效
    图像形成装置具有用于在打开门时保护中间转印部件的转印区域的盖

    公开(公告)号:US5787326A

    公开(公告)日:1998-07-28

    申请号:US626345

    申请日:1996-04-02

    摘要: In a color electrophotographic printer, an intermediate transfer belt is provided to layer toner images of a plurality of colors, and the toner images on the belt are transferred onto a paper sheet. In order to remove a paper sheet when a paper jam happens, a door is provided in a case of the printer, while a cover is provided to protect a transfer region where the intermediate transfer belt contacts with a paper sheet for transferring the toner images. When the door is opened, the cover moves to cover a portion of the surface of the intermediate transfer belt exposed to the door. When the jammed paper sheet is removed, the image forming process is resumed immediately on the toner images on the intermediate transfer belt. Further, an intermediate transfer unit including the intermediate transfer belt and the cover detachable from the printer may be provided. In a modified example, a transfer member which is connected to a transfer member is provided instead of the cover, and when the door is opened, the transfer member covers the surface of the intermediate transfer belt.

    摘要翻译: 在彩色电子照相打印机中,提供中间转印带以分层多色调色剂图像,并将带上的调色剂图像转印到纸张上。 为了在发生卡纸时去除纸张,在打印机的壳体中设置门,同时提供盖以保护中间转印带与用于转印调色剂图像的纸张接触的转印区域。 当门打开时,盖移动以覆盖暴露于门的中间转印带的表面的一部分。 当卡住的纸张被移除时,图像形成处理在中间转印带上的调色剂图像上立即恢复。 此外,可以提供包括中间转印带和可从打印机拆卸的盖的中间转印单元。 在变形例中,代替盖而设置与转印部件连接的转印部件,当打开门时,转印部件覆盖中间转印带的表面。

    Color image forming apparatus and method having toner images transferred
to a paper sheet
    12.
    发明授权
    Color image forming apparatus and method having toner images transferred to a paper sheet 失效
    具有转印到纸张上的调色剂图像的彩色图像形成装置和方法

    公开(公告)号:US5565975A

    公开(公告)日:1996-10-15

    申请号:US475356

    申请日:1995-06-07

    IPC分类号: G03G15/01 G03G15/16

    摘要: A color image forming apparatus forming toner images of yellow, magenta, cyanogen and black respectively by rotational movement of different image forming units is described. The toner images are transferred to and superimposed on an intermediate transfer belt and then re-transferred to a paper sheet by pressing a transfer roller on the intermediate transfer belt via the paper sheet. A rotational axis of the transfer roller is immovable, and a potential of the transfer roller is electrically floated while the toner images are transferred to the intermediate transfer belt.

    摘要翻译: 描述了通过不同图像形成单元的旋转运动分别形成黄色,品红色,氰色和黑色的调色剂图像的彩色图像形成装置。 将调色剂图像转印到中间转印带上并叠加在中间转印带上,然后通过经由纸张将中间转印带上的转印辊按压而重新转印到纸张上。 转印辊的旋转轴线是不可移动的,并且当调色剂图像被转印到中间转印带时,转印辊的电位被电浮动。