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Title:
CONDUCTIVE MEMBER, MANUFACTURING METHOD THEREOF, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/075371
Kind Code:
A1
Abstract:
Provided is a conductive member capable of suppressing the generation of a ghost image and providing a high-quality image, even in a high-speed main body. The conductive member has a conductive support and a conductive layer. The conductive layer has a matrix containing a crosslinked material of first rubber, and a plurality of domains dispersed in the matrix. Each of the domains contains a crosslinked material of second rubber and conductive particles. The first rubber and the second rubber are different from each other. The outer surface of the conductive member has a plurality of recesses, and at least a part of the surface of the domain is exposed on the outer surface of the conductive member at the bottom of the recess. The volume resistance of the matrix is greater than 1 × 1012 Ωcm, and the volume resistance of the conductive layer is 1 × 105 to 1 × 108 Ωcm. If the current value between the conductive support and the surface matrix of the conductive member is A1 and the current value between the conductive support and the surface domain of the conductive member is A2 when a DC voltage of 80 V is applied using a cantilever of an interatomic force microscope, and A2 is 20 times or more of A1.

Inventors:
UEMATSU ATSUSHI (JP)
FURUKAWA TAKUMI (JP)
HIRAMATSU TAKASHI (JP)
Application Number:
PCT/JP2020/038284
Publication Date:
April 22, 2021
Filing Date:
October 09, 2020
Export Citation:
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Assignee:
CANON KK (JP)
International Classes:
F16C13/00; G03G15/00; G03G15/02
Foreign References:
JPH0572889A1993-03-26
JP2018063423A2018-04-19
JPH0218578A1990-01-22
JP2019124900A2019-07-25
JP2019191564A2019-10-31
Attorney, Agent or Firm:
OKABE Yuzuru et al. (JP)
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