IMAGE FORMING APPARATUS,申请号JP20060147544-传众专利搜索

IMAGE FORMING APPARATUS

申请公布号：JP2007316457(A)

申请号：JP20060147544

申请日期：2006.05.29

申请公布日期：2007.12.06

申请人：

RICOH CO LTD

发明人：ECHIGO KATSUHIRO;KOYAMA HAJIME;TAMIYA TAKAHIRO

分类号：G03G15/16;G03G21/10

主分类号：G03G15/16

摘要：PROBLEM TO BE SOLVED: To provide an image forming apparatus which prevents the deterioration of transfer image quality associated with the variation of the destaticizing performance of an intermediate transfer body caused by intrusion of worn powder or a foreign matter even when aged, and also prevents the occurrence of a failure by leak. SOLUTION: The image forming apparatus has: an image carrier 3 turning while a toner image is formed on its surface; the belt type intermediate transfer body 21 to which the toner image is transferred from the image carrier 3 while turning in contact with the image carrier 3 in the same direction; a bias applying member 71 existing on an opposite side to the image carrier 3 while putting the intermediate transfer body 21 in between and applying bias having the same polarity as toner at least in an area where the image carrier 3 comes into contact with the intermediate transfer body 21; and a bias applying member 70 applying bias having a reverse polarity to the toner coming close to the bias applying member 71 applying the bias having the same polarity as the toner. The image forming apparatus 1 has a detachable auxiliary member 72 at a part coming into contact with the intermediate transfer body 21 at the edge part of the bias applying member 71 applying the bias having the same polarity as the toner. COPYRIGHT: (C)2008,JPO&INPIT