Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS USING THE SAME, AND PROCESS CARTRIDGE FOR IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2011039211
Kind Code:
A
Abstract:

To provide an electrophotographic photoreceptor which even in long-term use, assures mechanical strength and shows excellent image stability, and an image forming method and apparatus and a process cartridge using the same.

The electrophotographic photoreceptor has at least a photosensitive layer and a surface protective layer on a conductive support. The image forming method and apparatus and the process cartridge are configured using the electrophotographic photoreceptor. The surface protective layer contains a charge transport compound (D) and a filler (E) in a cured resin produced by reacting a polyol compound (A) not containing a triarylamine structure, an isocyanate compound (B) having two or more isocyanate groups, and a compound (C) containing a hydroxyl group and a triarylamine structure, wherein the charge transporting compound does not have a functional group reactive with the isocyanate compound (B) and contains a triarylamine structure, and wherein a content Dc of the compound (C) and a content Dd of the compound (D) are controlled so that the relational expression: Dc≤Dd is satisfied.


Inventors:
LI HONGGUO
NAGAI KAZUKIYO
Application Number:
JP2009185457A
Publication Date:
February 24, 2011
Filing Date:
August 10, 2009
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
RICOH CO LTD
International Classes:
G03G5/147
Domestic Patent References:
JP2008158469A2008-07-10
JP2004020842A2004-01-22
JPH08160649A1996-06-21
JPS61132954A1986-06-20
Attorney, Agent or Firm:
Masami Sakai
Norio Kagami