Electrophotographic photosensitive member, method of producing electrophotographic photosensitive member, process cartridge, and electrophotographic image forming apparatus

• US 10,095,137 B2
• Filed: 03/27/2017
• Issued: 10/09/2018
• Est. Priority Date: 04/04/2016
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Murakami, Takeshi, Kawaguchi, Daisuke, Sugiyama, Kazumichi, Tanaka, Daisuke
• Primary Examiner(s): Rodee, Christopher D
• Application Number:
  US15/469,949
• Publication Number:
  US 20170285500A1
• Time in Patent Office: 561 Days
• CPC Class Codes: G03G 2215/00957 Compositions
• CPC Class Codes: G03G 5/142 Inert intermediate layers
• CPC Class Codes: G03G 5/144 comprising inorganic material

Abstract

Provided is an electrophotographic photosensitive member that can suppress a ghost image while keeping its sensitivity satisfactory. The electrophotographic photosensitive member includes a support, an intermediate layer on the support, and a photosensitive layer on the intermediate layer, and the intermediate layer contains a compound having a specific structure.

Claims

1. An electrophotographic photosensitive member, comprising:

a support;

an intermediate layer on the support; and

a photosensitive layer on the intermediate layer, wherein

the intermediate layer contains a metal oxide and at least one compound selected from the group consisting of a compound represented by formula (2), and a compound represented by formula (3);

2. The electrophotographic photosensitive member according to claim 1, wherein a content of the compound represented by formula (2), and the compound represented by formula (3) is 0.1 to 50 mass % with respect to a total mass of the intermediate layer.

3. The electrophotographic photosensitive member according to claim 1, wherein the at least one compound represented by formula (2), and the compound represented by formula (3) forms a complex with the metal oxide.

4. The electrophotographic photosensitive member according to claim 1, wherein the metal oxide comprises a particle containing zinc oxide, titanium oxide, or tin oxide.

5. The electrophotographic photosensitive member according to claim 1, wherein a content of the at least one compound represented by formula (2), and formula (3) is 0.05 to 20 mass % with respect to the metal oxide in the intermediate layer.

6. The electrophotographic photosensitive member according to claim 1, wherein at least one of R⁸ to R¹⁶, or at least one of R¹⁷ to R²⁴ represents a hydroxy group or a carboxy group.

7. The electrophotographic photosensitive member according to claim 1, wherein R⁸ to R¹⁶, or R¹⁷ to R²⁴ each independently represent a hydrogen atom, a hydroxy group, or a carboxy group.

8. The electrophotographic photosensitive member according to claim 1, wherein at least one of R¹⁵, R¹⁷, R¹⁸, and R²⁴ represents a hydroxy group or a carboxy group.

9. A method of producing the electrophotographic photosensitive member according to claim 1, the method comprising:

forming, on the support, a coat of a coating liquid for the intermediate layer containing a metal oxide and at least one compound selected from the group consisting of a compound represented by formula (2), and a compound represented by formula (3);

drying the coat to form the intermediate layer; and

forming the photosensitive layer on the intermediate layer;

10. 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, and a cleaning device,

the process cartridge integrally supporting the electrophotographic photosensitive member and the at least one device, and being removably mounted onto a main body of an electrophotographic image forming apparatus, wherein

the electrophotographic photosensitive member comprises a support, an intermediate layer on the support, and a photosensitive layer on the intermediate layer; and

the intermediate layer contains a metal oxide and at least one compound selected from the group consisting of a compound represented by formula (1), a compound represented by formula (2), and a compound represented by formula (3);

11. An electrophotographic image forming 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 a support, an intermediate layer on the support, and a photosensitive layer on the intermediate layer, and

the intermediate layer contains a metal oxide and at least one compound selected from the group consisting of a compound represented by formula (1), a compound represented by formula (2), and a compound represented by formula (3);

12. An electrophotographic photosensitive member, comprising:

a support;

an intermediate layer on the support; and

a photosensitive layer on the intermediate layer, wherein

the intermediate layer contains a metal oxide and a compound represented by formula (1);

13. The electrophotographic photosensitive member according to claim 12, wherein the compound represented by formula (1) forms a complex with the metal oxide.

14. The electrophotographic photosensitive member according to claim 12, wherein a content of the compound represented by formula (1) is 0.05 to 20 mass % with respect to the metal oxide in the intermediate layer.