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Title:
ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2010/008094
Kind Code:
A1
Abstract:
Disclosed is an electrophotographic photoreceptor that can continually exhibit the effect of relaxing stress of contact with a contact member or the like and, at the same time, has an excellent potential stability during repeated use.  Also disclosed are a process cartridge comprising the electrophotographic photoreceptor, and an electrophotographic apparatus.  The electrophotographic photoreceptor comprises a charge transport layer as a surface layer.  The charge transport layer comprises a polyester resin as a binder resin.  The polyester resin has a repeating structural unit represented by formula (1) and a repeating structural unit represented by formula (2).  The content of siloxane sites in the polyester resin is 5 to 30% by mass based on the total mass of the polyester resin, and the content of the polyester resin in the charge transport layer is not less than 60% by mass of the total mass of the whole binding resin in the charge transport layer.

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Inventors:
OGAKI HARUNOBU (JP)
UEMATSU HIROKI (JP)
OCHI ATSUSHI (JP)
Application Number:
PCT/JP2009/063229
Publication Date:
January 21, 2010
Filing Date:
July 16, 2009
Export Citation:
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Assignee:
CANON KK (JP)
OGAKI HARUNOBU (JP)
UEMATSU HIROKI (JP)
OCHI ATSUSHI (JP)
International Classes:
G03G5/05; G03G5/047; G03G5/06
Foreign References:
JP2003302780A2003-10-24
JP2002214807A2002-07-31
JP2007199686A2007-08-09
JPH08234468A1996-09-13
JPH11143106A1999-05-28
JP2007199688A2007-08-09
JPH03185451A1991-08-13
JPH11194522A1999-07-21
JP2000075533A2000-03-14
JP2002128883A2002-05-09
JP2003302780A2003-10-24
JP2008187180A2008-08-14
Other References:
See also references of EP 2306247A4
Attorney, Agent or Firm:
OKABE, Masao et al. (Fuji Bldg. 2-3, Marunouchi 3-chome, Chiyoda-k, Tokyo 05, JP)
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