Electrophotographic member, process cartridge and electrophotographic apparatus

• US 9,017,239 B2
• Filed: 09/13/2012
• Issued: 04/28/2015
• Est. Priority Date: 06/15/2011
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Ishida, Kazutoshi, Satoh, Hidenori, Uesugi, Tomoya
• Primary Examiner(s): BESLER, CHRISTOPHER JAMES
• Application Number:
  US13/615,433
• Publication Number:
  US 20130004202A1
• Time in Patent Office: 957 Days
• Field of Search: 492/49, 492/53, 492/54, 492/56
• US Class Current: 492/54
• CPC Class Codes: G03G 15/0233 Structure, details of the charging member, e.g. chemical composition, surface properties
• CPC Class Codes: G03G 15/0818 characterised by the structure of the donor member, e.g. surface properties

Abstract

An electrophotographic member whose performances are hardly changed even after a long-term use is provided. An electrophotographic member having a mandrel, an elastic layer and a surface layer, wherein the surface layer contains a titanium oxide film having chemical bonds represented by the following formula (1) and formula (2) is provided.
O—Ti—O  Formula (1)
Ti—O—C  Formula (2)

Claims

1. An electrophotographic member comprising:

a mandrel,

an elastic layer, and

a surface layer;

wherein,

the surface layer comprises a titanium oxide film having chemical bonds represented by the following formula (1) and formula (2)

O—

Ti—

O 

 

Formula (1)

Ti—

O—

C 

 

Formula (2)

wherein an abundance ratio (C<sub>C—

C</sub>/O<sub>C—

O</sub>) is 3 or more and 8 or less, wherein Oc-o represents an abundance ratio of an oxygen atom bound to a carbon atom, (O<sub>C—

O</sub>), and Cc-c represents an abundance ratio of a carbon atom bound to a carbon atom, (C<sub>C—

C</sub>), in the titanium oxide film.

2. The electrophotographic member according to claim 1, wherein the titanium oxide film comprises a hydrolytic condensate of titanium tetraalkoxide represented by the following formula (3):

Ti(OR)₄ 

 

Formula (3)

(in the formula (3), R represents a linear or branched-chain alkyl group having 2 to 18 carbon atoms).

3. A process cartridge provided with an electrophotographic member according to claim 1, and configured to be attachable to and removable from a main body of an electrophotographic apparatus.

4. An electrophotographic apparatus provided with an electrophotographic member according to claim 1.