ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS

• US 20160291489A1
• Filed: 03/22/2016
• Published: 10/06/2016
• 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
• Granted Patent: US 9,772,568 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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; and

a photosensitive layer, wherein;

the undercoat layer is free of a metal oxide, or contains the metal oxide but a 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);

2. An electrophotographic photosensitive member according to claim 1, wherein in the formulae (1) and (2), R¹⁰⁵ represents a methylene group, a carbonyl group, or NH, and R²⁰⁶ represents a methylene group, a carbonyl group, or NH.

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

4. An electrophotographic photosensitive member according to claim 3, 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.

5. An electrophotographic photosensitive member according to claim 3, wherein the composition contains the crosslinking agent and a resin having a polymerizable functional group.

6. An electrophotographic photosensitive member according to claim 5, 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.

7. An electrophotographic photosensitive member according to claim 3, wherein a mass ratio between the crosslinking agent and the anthraquinone derivative is from 100:

50 to 100;

250.

8. 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,

the process cartridge being detachably mountable to a main body of an electrophotographic apparatus,

wherein the electrophotographic photosensitive member comprises, in this order;

a support;

an undercoat layer; and

a photosensitive layer, wherein;

the undercoat layer is free of a metal oxide, or contains the metal oxide but a 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);

9. An electrophotographic apparatus, comprising:

an electrophotographic photosensitive member;

a charging device;

an exposing device;

a developing device; and

a transferring device,

wherein the electrophotographic photosensitive member comprises, in this order;

a support;

an undercoat layer; and

a photosensitive layer, wherein;

the undercoat layer is free of a metal oxide, or contains the metal oxide but a 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);