公开(公告)号：US20090190970A1

公开(公告)日：2009-07-30

申请号：US12177662

申请日：2008-07-22

申请人： Akira SHIMADA ,  Tomomi Shimada

发明人： Akira SHIMADA ,  Tomomi Shimada

IPC分类号： G03G15/09

CPC分类号： G03G15/0808 ,  G03G2215/0636

摘要： A development device in which abrasion of a developing roller can be reduced to expand the life of the device, and high-speed and high-quality images can be obtained stably over a long time. The developing roller is composed of an elastic body. An intermediate roller made of metal is disposed closely to the developing roller so as to face the developing roller. A magnetic roller is disposed closely to the intermediate roller so as to face the intermediate roller. A developer layer composed of a magnetic carrier and a toner is formed on the surface of the magnetic roller. The developer layer is carried to the intermediate roller side, and only the toner in the developer layer is transferred to the intermediate roller. A toner layer formed thus is transferred from the intermediate roller to the developing roller, and brought into contact with the surface of an image carrying member.

摘要翻译： 可以减少显影辊的磨损以延长装置寿命的显影装置，并且可以长时间稳定地获得高速和高质量的图像。 显影辊由弹性体构成。 由金属制成的中间辊以与显影辊相对的方式靠近显影辊设置。 磁辊被布置成与中间辊紧密地相对于中间辊。 在磁性辊的表面上形成由磁性载体和调色剂组成的显影剂层。 显影剂层被运送到中间辊侧，并且只有显影剂层中的调色剂被转印到中间辊。 由此形成的调色剂层从中间辊转印到显影辊上，并与图像承载部件的表面接触。