Electrophotographic endless belt, electrophotographic apparatus, and process for producing electrophotographic endless belt

• US 20060226572A1
• Filed: 12/23/2005
• Published: 10/12/2006
• Est. Priority Date: 04/06/2005
• Status: Abandoned Application

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Tanaka, Atsushi, Sakurai, Yuji, Yamauchi, Kenichi, Muranaka, Norifumi, Kusaba, Takashi, Nakazawa, Akihiko, Matsuda, Hidekazu
• Application Number:
  US11/315,283
• Publication Number:
  US 20060226572A1
• Time in Patent Office: Days
• US Class Current: 264/176.100
• CPC Class Codes: C08K 3/04 Carbon
• CPC Class Codes: C08L 2666/14 Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
• CPC Class Codes: C08L 27/16 Homopolymers or copolymers or vinylidene fluoride
• CPC Class Codes: C08L 71/02 Polyalkylene oxides
• CPC Class Codes: C08L 77/00 Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 77/12 Polyester-amides
• CPC Class Codes: G03G 15/162 details of the the intermediate support, e.g. chemical composition
• CPC Class Codes: G03G 2215/0129 horizontal medium transport path at the secondary transfer
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31725 Of polyamide

Abstract

An electrophotographic endless belt is disclosed having a layer formed of a resin composition containing (i) at least one resin selected from the group consisting of a polyether ester amide, a polyolefin ether and a polyether amide; (ii) polyvinylidene fluoride; and (iii) carbon. In the resin composition, the ratio of the mass of the component (iii) to the mass of the component (i) is in a specific range.

Claims

1. An electrophotographic endless belt which has a layer comprising a resin composition containing:

(i) at least one resin selected from the group consisting of a polyether ester amide, a polyolefin ether and a polyether amide;

(ii) polyvinylidene fluoride; and

(iii) carbon;

in said resin composition, a mass (A) of the component (iii) and a mass (B) of the component (i) being in a ratio A/B of from 4 or more to 50 or less.

2. The electrophotographic photosensitive member according to claim 1, wherein said resin composition contains the component (i) in an amount of from 0.1% by mass or more to 1.8% by mass or less, contains the component (ii) in an amount of from 50.0% by mass or more to 97.9% by mass or less, and contains the component (iii) in an amount, of from 2.0% by mass or more to 15.0% by mass ort less.

3. The electrophotographic photosensitive member according to claim 2, wherein said resin composition contains the component (i) in an amount of from 0.1% by mass or more to 0.9.

4. The electrophotographic photosensitive member according to claim 1, wherein said resin composition further contains (iv) a polyhydric alcohol, type nonionic surface-active agent.

5. The electrophotographic photosensitive member according to claim 4, wherein, in said resin composition, a mass (C) of the component from 0.01 or more to 0.30 or less.

6. The electrophotographic photosensitive member according to claim 5, wherein the component (iv) polyhydric alcohol type nonionic surface-active agent is a glycerol fatty ester.

7. The electrophotographic photosensitive member according to claim 6, wherein said glycerol fatty ester is at least one of a condensed ricinoleic acid polyglycerol ester and a polyglycerol stearic ester.

8. An electrophotographic apparatus having an electrophotographic endless belt;

said electrophotographic endless belt being an electrophotographic endless belt which has a layer comprising a resin composition containing;

(i) at least one resin selected from the group consisting of a polyether ester amide, a polyolefin ether and a polyether amide;

(ii) polyvinylidene fluoride; and

(iii) carbon;

in said resin composition, a mass (A) of the component (iii) and a mass (B) of the component (i) being in a ratio A/B of from 4 or more to 50 or less.

9. A process for producing an electrophotographic endless belt which has a layer comprising a resin composition containing:

(i) at least one resin selected from the group consisting of a polyether ester amide, a polyolefin ether and a polyether amide;

(ii) polyvinylidene fluoride; and

(iii) carbon;

in said resin composition, a mass (A) of the component (iii) and a mass (B) of the component (i) being in a ratio A/B of from 4 or more to 50 or less;

the process comprising the steps of;

previously melt-kneading polyvinylidene fluoride, carbon and a polyhydric alcohol type nonionic surface-active agent, followed by pulverization to produce a pulverized product;

melt-kneading at least one resin selected from the group consisting of a polyether ester amide, a polyolefin ether and a polyether amide, the pulverized product and polyvinylidene fluoride to prepare a resin composition; and

melt-extruding the resin composition to produce a tubular film.