Invention Grant
- Patent Title: Charging member, charging device including the charging member, process cartridge including the charging device and image forming apparatus including the process cartridge
- Patent Title (中): 充电构件,包括充电构件的充电装置,包括充电装置的处理盒和包括处理盒的成像装置
-
Application No.: US12426568Application Date: 2009-04-20
-
Publication No.: US08150295B2Publication Date: 2012-04-03
- Inventor: Makoto Nakamura , Yutaka Narita , Tadayuki Oshima , Taisuke Tokuwaki , Hiroki Furubayashi
- Applicant: Makoto Nakamura , Yutaka Narita , Tadayuki Oshima , Taisuke Tokuwaki , Hiroki Furubayashi
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2008-119038 20080430
- Main IPC: G03G15/02
- IPC: G03G15/02 ; G03G21/18

Abstract:
A charging member is provided in which a minute gap between an image support body and the charging member is set widely but even so the charging member does not abnormally discharge easily, the charging member includes a conductive support body 903, an electrical resistance adjustment layer 902 disposed on the conductive support body 903 and a surface layer 901 disposed on the electrical resistance adjustment layer 902 in which the surface layer contains at least (a) polyol resin grafted with fluorine or silicon, (b) polyether polyol resin, (c) organic anion salt that contains fluorine and alkali metal or alkali earth metal and (d) polyisocyanate.
Public/Granted literature
Information query