ELECTRO-CONDUCTIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS

• US 20130266339A1
• Filed: 06/07/2013
• Published: 10/10/2013
• Est. Priority Date: 12/09/2011
• Status: Abandoned Application

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Sugiyama, Ryo, Kusaba, Takashi, Urushihara, Shohei, Uno, Masashi
• Application Number:
  US13/912,705
• Publication Number:
  US 20130266339A1
• Time in Patent Office: Days
• US Class Current: 399/111
• CPC Class Codes: C08G 77/12 containing silicon bound to hydrogen C08G77/045 takes precedence
• CPC Class Codes: C08G 77/20 containing silicon bound to unsaturated aliphatic groups C08G77/045 takes precedence
• CPC Class Codes: C08K 3/04 Carbon
• CPC Class Codes: C08L 2203/20 use in electrical or conductive gadgets
• CPC Class Codes: C08L 83/00 Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: C09D 183/04 Polysiloxanes
• CPC Class Codes: G03G 15/0818 characterised by the structure of the donor member, e.g. surface properties
• CPC Class Codes: G03G 9/16 Developers not provided for in groups G03G9/06 - G03G9/135, e.g. solutions, aerosols

Abstract

Provided is an electro-conductive member showing small unevenness of the residual state of charge. The electro-conductive member is an electro-conductive member, comprising: a substrate whose surface is electro-conductive; and an electro-conductive elastic layer provided on the substrate, wherein the elastic layer is obtained by curing a mixture containing the following (A) to (D): (A) an organopolysiloxane having at least two vinyl groups bonded to a silicon atom; (B) an organopolysiloxane represented by the following chemical structural formula (1); (C) a hydrogen polysiloxane having at least two hydrosilyl groups; and (D) carbon black (l, m, and n in the chemical structural formula (1) each independently represent a positive integer).

Claims

1. An electro-conductive member, comprising:

a substrate having an electro-conductive surface; and

an electro-conductive elastic layer provided thereon,

wherein the elastic layer is obtained by curing a mixture containing the following (A) to (D);

(A) an organopolysiloxane having two vinyl groups bonded to a silicon atom;

(B) an organopolysiloxane represented by the following chemical structural formula (1);

2. The electro-conductive member according to claim 1, wherein the (A) of component has a viscosity at a temperature of 25°

C. of 10 Pa·

s or more and 100 Pa·

s or less, and the (B) of component has a viscosity at a temperature of 25°

C. of 0.015 Pa·

s or more and 0.030 Pa·

s or less.

3. The electro-conductive member according to claim 1, further comprising a surface layer provided on the elastic layer, wherein the surface layer contains a urethane resin.

4. A process cartridge, comprising:

at least a developing roller, a developing blade, and a toner container,

wherein;

the developing roller comprises the electro-conductive member according to claim 1; and

the process cartridge is detachably mountable to a main body of an electrophotographic apparatus.

5. An electrophotographic apparatus, comprising:

a photosensitive member; and

a developing roller placed to abut on the photosensitive member,

wherein the developing roller comprises the electro-conductive member according to claim 1.