Invention Grant
- Patent Title: Electrophotographic photoreceptor, process cartridge, and image forming apparatus
- Patent Title (中): 电子照相感光体,处理盒和成像设备
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Application No.: US12627723Application Date: 2009-11-30
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Publication No.: US08404416B2Publication Date: 2013-03-26
- Inventor: Daisuke Haruyama , Masahiro Iwasaki
- Applicant: Daisuke Haruyama , Masahiro Iwasaki
- Applicant Address: JP Tokyo
- Assignee: Fuji Xerox Co., Ltd.
- Current Assignee: Fuji Xerox Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2009-152857 20090626
- Main IPC: G03G5/14
- IPC: G03G5/14 ; G03G21/16 ; G03G21/18 ; G03G15/06

Abstract:
The invention provides an electrophotographic photoreceptor having a surface protection layer that satisfies the following requirements: (1) including a crosslinked substance of at least one selected from a guanamine compound or a melamine compound, and at least one charge transporting material having at least one substituent selected from —OH, —OCH3, —NH2, —SH or —COOH; (2) including the at least one of a guanamine compound or a melamine compound in an amount of from about 0.1 to about 5% by weight; and (3) having a universal hardness of from about 180 to about 220 N/mm2 and a creep ratio of from about 5% to about 8%, the universal hardness and the creep ratio being obtained by performing a hardness test by pushing a Vickers quadrangular pyramid diamond indenter against the surface protection layer at a maximum load of 20 mN, in an environment of 25° C. and a relative humidity of 50%.
Public/Granted literature
- US20100330473A1 ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS Public/Granted day:2010-12-30
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