发明名称 Charging member, process cartridge including the same, and image forming apparatus including the same
摘要 A charging member, which can be provided in a process cartridge and/or in an image forming apparatus, includes a conductive supporting member, an electrical resistance control layer formed on an outer circumferential surface of the conductive supporting member, and a nonconductive gap retaining member configured to retain a gap between the conductive supporting member and an image carrying member closely disposed to each other to have a constant distance. At least a portion of the nonconductive gap retaining member is mounted on the electrical resistance control layer at both ends of the conductive supporting member, and a circumference of the nonconductive gap retaining member projects from the electrical resistance control layer. An amount of projection of the gap retaining member from the electrical resistance control layer decreases as the gap retaining member tapers in a direction toward a center of an image formation region.
申请公布号 US7555243(B2) 申请公布日期 2009.06.30
申请号 US20070774268 申请日期 2007.07.06
申请人 RICOH COMPANY, LTD. 发明人 SATOH MASAHIKO;KAWASUMI MASANORI;KIMURA YOSHIYUKI;MURAKAMI EISAKU;ZEMBA HIDEKI;UCHITANI TAKESHI;KAYAHARA SHIN;HASHIMOTO SHUNICHI;SHIMOJO EIJI
分类号 G03G15/02 主分类号 G03G15/02
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