公开(公告)号：US06330414B1

公开(公告)日：2001-12-11

申请号：US09409079

申请日：1999-09-30

申请人： Yasuo Takuma ,  Yoshitaka Fujinuma ,  Tomonari Hokkyou ,  Masayasu Anzai ,  Koji Kato

发明人： Yasuo Takuma ,  Yoshitaka Fujinuma ,  Tomonari Hokkyou ,  Masayasu Anzai ,  Koji Kato

IPC分类号： G03G1508

CPC分类号： G03G15/09 ,  G03G2215/0648

摘要： In a developing system containing a combination of forward-rotating and a backward-rotating developing rollers, a steady quantity of developing agent should be supplied to the developing rollers for high-quality printed images. This requirement can be satisfied by placing a doctor blade between an intersection point, where a line connecting the central axis of one of the developing rollers and its polarity reversing position meets a line connecting the central axis of the other of the developing rollers and its polarity reversing position, and the developing roller pair. Further, the doctor blade should be located on the upstream side of the developing agent flow relative to the central axes of the backward-rotating developing roller and the forward rotating developing roller with its rightmost side (upstream side) in parallel with the line connecting the central axes of the developing rollers, and the doctor gap (on the side of the developing roller to which the developing agent is supplied) should be greater than a minimum gap (doctor gap) between one end of the doctor blade and the surface of the developing roller to which the developing agent is first supplied.

摘要翻译： 在包含正向旋转和向后旋转的显影辊的组合的显影系统中，应将稳定量的显影剂供应到显影辊以获得高质量的印刷图像。 这种要求可以通过将刮刀放置在交叉点之间，其中连接显影辊中的一个的中心轴线和其极性反转位置的线与连接另一个显影辊的中心轴的线和其极性 反转位置和显影辊对。 此外，刮刀应当位于显影剂流的上游侧，相对于反转显影辊和向前旋转的显影辊的中心轴线，其最右侧（上游侧）与连接 显影辊的中心轴线和刮刀间隙（在显影剂供应的显影辊侧）应大于刮刀的一端与刮刀的表面之间的最小间隙（刮刀间隙） 首先提供显影剂的显影辊。