公开(公告)号：US4855783A

公开(公告)日：1989-08-08

申请号：US122685

申请日：1987-11-18

申请人： Masayuki Takashima ,  Noboru Sawayama

发明人： Masayuki Takashima ,  Noboru Sawayama

IPC分类号： G03G15/08 ,  G03G15/00

CPC分类号： G03G15/0822

摘要： A developing device in which toner fed from a toner cartridge is caused to flow down by a toner supply roller and, then, mixed with a developer by an agitating roller unit which is made up of a spiral blade and a plurality of radial blades. The spiral blade of the roller unit is greater in outside diameter than the radial blades. Those parts of the spiral blade where the individual chambers are located are notched at one side of the spiral blade and intermittently with respect to an order in the circumferential direction, and those parts of the radial blades where the individual chambers into which the developer from the notched parts of the spiral blade flows are notched. The developing device further comprises a developing roller, a paddle wheel for supplying the developer to the developing roller, a doctor blade for regulating the developer on the developing roller to a predetermined thickness, a separator for returning the developer scraped off by the doctor blade toward the paddle wheel and roller unit, a restricting member extending from a developer outlet side of the separator to a position between the paddle wheel and the developer agitating roller unit for blocking a part of the developer collected from the separator. The developer is moved away from the paddle wheel in response to rotation of the roller unit.

摘要翻译： 使从调色剂盒供给的调色剂通过调色剂供应辊向下流动，然后通过由螺旋叶片和多个径向叶片构成的搅拌辊单元与显影剂混合的显影装置。 辊单元的螺旋叶片的外径比径向叶片大。 螺旋叶片中各个腔室所在的那些部分在螺旋叶片的一侧被切口并且相对于沿圆周方向的次序间断地切割，并且那些径向叶片的那些部分，其中来自 螺旋叶片流动的切口部分被切口。 显影装置还包括显影辊，用于将显影剂供应到显影辊的刮刀轮，用于将显影辊上的显影剂调节至预定厚度的刮刀，用于使刮刀刮下的显影剂返回的分离器朝向 叶轮和滚筒单元，从分隔器的显影剂出口侧延伸到桨轮和显影剂搅拌辊单元之间的位置，用于阻挡从分离器收集的一部分显影剂的限制构件。 响应于辊单元的旋转，显影剂被移动离开桨轮。