Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

• US 9,772,568 B2
• Filed: 03/22/2016
• Issued: 09/26/2017
• Est. Priority Date: 03/30/2015
• Status: Active Grant

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Sekido, Kunihiko, Sekiya, Michiyo, Tagami, Kei, Nishi, Masashi
• Primary Examiner(s): VAJDA, PETER L
• Application Number:
  US15/077,209
• Publication Number:
  US 20160291489A1
• Time in Patent Office: 553 Days
• CPC Class Codes: G03G 5/142 Inert intermediate layers

Abstract

Provided is an electrophotographic photosensitive member including a support, an undercoat layer, and a photosensitive layer in this order, in which: the undercoat layer does not contain a metal oxide, or contains the metal oxide but the content of the metal oxide in the undercoat layer is 10 mass % or less; and the undercoat layer contains a polymerized product of a composition containing at least one kind of anthraquinone derivative selected from the group consisting of a compound represented by the formula (1) and a compound represented by the formula (2).

Claims

1. An electrophotographic photosensitive member comprising, in this order:

a support;

an undercoat layer that contains at most 10 mass % metal oxide; and

a photosensitive layer, wherein

the undercoat layer contains a polymerized product of a composition containing at least one anthraquinone derivative selected from the group consisting of formula (1) and formula (2);

2. An electrophotographic photosensitive member according to claim 1, wherein the composition further contains a crosslinking agent.

3. An electrophotographic photosensitive member according to claim 2, wherein the crosslinking agent comprises one of an isocyanate compound having one of an isocyanate group and a blocked isocyanate group, and an amine compound having one of an N-methylol group and an alkyl-etherified N-methylol group.

4. An electrophotographic photosensitive member according to claim 2, wherein the composition contains the crosslinking agent and a resin having a polymerizable functional group.

5. An electrophotographic photosensitive member according to claim 4, wherein the polymerizable functional group of the resin having the polymerizable functional group is any one of a hydroxy group, a thiol group, an amino group, a carboxyl group, and a methoxy group.

6. An electrophotographic photosensitive member according to claim 2, wherein a mass ratio between the crosslinking agent and the anthraquinone derivative is from 100:

50 to 100;

250.

9. An electrophotographic photosensitive member according to claim 1, wherein the undercoat layer is free of a metal oxide.

7. A process cartridge, comprising:

an electrophotographic photosensitive member; and

at least one device selected from the group consisting of a charging device, a developing device, a transferring device, and a cleaning device,

the process cartridge integrally supporting the electrophotographic photosensitive member and the at least one device, and being detachably mountable to a main body of an electrophotographic apparatus,

the electrophotographic photosensitive member comprising, in this order;

a support;

an undercoat layer that contains at most 10 mass % metal oxide; and

a photosensitive layer, wherein

the undercoat layer contains a polymerized product of a composition containing at least one kind of anthraquinone derivative selected from the group consisting of formula (1) and formula (2);

8. An electrophotographic apparatus, comprising:

an electrophotographic photosensitive member;

a charging device;

an exposing device;

a developing device; and

a transferring device,

the electrophotographic photosensitive member comprising, in this order;

a support;

an undercoat layer that contains at most 10 mass % metal oxide; and

a photosensitive layer, wherein;

the undercoat layer contains a polymerized product of a composition containing at least one anthraquinone derivative selected from the group consisting of formula (1) and formula (2);