发明名称 IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE FOR USE IN SAME
摘要 <P>PROBLEM TO BE SOLVED: To provide an image forming apparatus having conductive fine particles which allow stable charge of an image carrier, and capable of reproducing a high-definition image even in an environment at high temperature and high humidity or at low temperature and low humidity. <P>SOLUTION: In the image forming apparatus, a charging device charges an image carrier surface with a charging member through the conductive fine particles, and a toner used has a weight average particle diameter of 2-8 &mu;m and a shape factor SF-1 of 100-130, wherein at least conductive fine particles and inorganic fine particles whose number average particle diameter is 60-300 nm have been externally added to the toner. <P>COPYRIGHT: (C)2007,JPO&INPIT
申请公布号 JP2006293295(A) 申请公布日期 2006.10.26
申请号 JP20050354581 申请日期 2005.12.08
申请人 RICOH CO LTD 发明人 SUGIURA HIDEKI
分类号 G03G9/08;G03G9/087;G03G15/02;G03G15/08 主分类号 G03G9/08
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