Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

• US 8,841,052 B2
• Filed: 11/21/2012
• Issued: 09/23/2014
• Est. Priority Date: 11/30/2011
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Watariguchi, Kaname, Murakami, Takeshi, Kawahara, Masataka, Tanaka, Masato, Yoshida, Akira
• Primary Examiner(s): RODEE, CHRISTOPHER D
• Application Number:
  US13/683,752
• Publication Number:
  US 20130137023A1
• Time in Patent Office: 671 Days
• Field of Search: 430/60, 430/59.4, 430/58.75, 430/58.5, 430/59.1, 399/159, 399/111
• US Class Current: 430/60
• CPC Class Codes: G03G 5/14 Inert intermediate or cover layers for charge-receiving layers G03G5/04 takes precedence
• CPC Class Codes: G03G 5/142 Inert intermediate layers

Abstract

In order to provide an electrophotographic photosensitive member with which a ghost is suppressed even under a low temperature and low humidity environment, and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member, the electrophotographic photosensitive member has a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer and comprising a charge generating material and a hole transporting material, wherein the undercoat layer comprises a particular amine compound.

Claims

1. An electrophotographic photosensitive member comprising a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer and comprising a charge generating material and a hole transporting material, wherein

the undercoat layer comprises an amine compound represented by the following formula (1):

2. The electrophotographic photosensitive member according to claim 1, wherein the amine compound represented by the formula (1) is an amine compound represented by any of the following formulas (2) to (4):

3. The electrophotographic photosensitive member according to claim 1, wherein the content of the amine compound represented by the formula (1) in the undercoat layer is 0.05% by mass or more and 15% by mass or less.

4. The electrophotographic photosensitive member according to claim 1, wherein the charge generating material is hydroxygallium phthalocyanine.

5. The electrophotographic photosensitive member according to claim 1, wherein the photosensitive layer has a charge generation layer comprising the charge generating material and a hole transport layer formed on the charge generation layer and comprising the hole transporting material.

6. The electrophotographic photosensitive member according to claim 5, wherein the charge generation layer comprises the charge generating material and an amine compound represented by the formula (1).

7. The electrophotographic photosensitive member according to claim 6, wherein the amine compound represented by the formula (1) comprised in the undercoat layer has the same structure as the amine compound represented by the formula (1) comprised in the charge generation layer.

8. A process cartridge that integrally supports the electrophotographic photosensitive member according to claim 1, and at least one unit selected from the group consisting of a charging unit, a developing unit, a transfer unit and a cleaning unit, and that is detachably mountable to a main body of an electrophotographic apparatus.

9. An electrophotographic apparatus having the electrophotographic photosensitive member according to claim 1, and a charging unit, an image exposure unit, a developing unit and a transfer unit.