ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS

• US 20160378000A1
• Filed: 06/16/2016
• Published: 12/29/2016
• Est. Priority Date: 06/25/2015
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Nishi, Masashi, Sekido, Kunihiko, Sekiya, Michiyo, Tagami, Kei, Yamamoto, Yuki
• Granted Patent: US 9,864,285 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G03G 15/75 Details relating to xerographic drum, band or plate, e.g. replacing, testing electrographic recording members per se G03G5/00
• CPC Class Codes: G03G 21/18 using a processing cartridge , whereby the process cartridge comprises at least two image processing means in a single unit
• CPC Class Codes: G03G 5/0696 Phthalocyanines
• CPC Class Codes: G03G 5/071 obtained by reactions only involving carbon-to-carbon unsaturated bonds G03G5/078 takes precedence
• CPC Class Codes: G03G 5/142 Inert intermediate layers

Abstract

Provided is an electrophotographic photosensitive member comprising a support, an intermediate layer formed on the support, a charge generating layer formed directly on the intermediate layer, and a charge transporting layer formed on the charge generating layer, in which the intermediate layer contains a compound represented by the formula (1).

Claims

1. An electrophotographic photosensitive member, comprising:

a support;

an intermediate layer formed on the support;

a charge generating layer formed directly on the intermediate layer; and

a charge transporting layer formed on the charge generating layer,

wherein;

the intermediate layer contains a polymer of a composition containing a compound represented by the formula (1);

when an averaged sectional difference of elevation in a calculated length range of from 0.1 μ

m or more to 100 μ

m or less in a surface of the intermediate layer on a charge generating layer side is measured, in a calculated length range of from 0.5 times or more to 1.5 times or less of a calculated length at which a maximum of the averaged sectional difference of elevation (Rmk,max) is expressed, a value for the averaged sectional difference of elevation (Rmk) is 0.05 μ

m or more; and

the charge generating layer contains a phthalocyanine pigment and a resin;

2. An electrophotographic photosensitive member according to claim 1, wherein the R² represents a group represented by the formula (2):

3. An electrophotographic photosensitive member according to claim 1, wherein the intermediate layer further contains particles having a number-average particle diameter of 0.2 μ

m or less.

4. An electrophotographic photosensitive member according to claim 1, wherein in the calculated length range of from 0.5 times or more to 1.5 times or less of the calculated length at which the maximum of the averaged sectional difference of elevation (Rmk,max) is expressed, the value for the averaged sectional difference of elevation (Rmk) is 0.07 μ

m or more.

5. An electrophotographic photosensitive member according to claim 1, wherein the resin comprises a resin having at least a structure represented by the formula (3):

6. A process cartridge, comprising:

an electrophotographic photosensitive member; and

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

the process cartridge integrally supporting the electrophotographic photosensitive member and the at least one unit,

the process cartridge being removably mounted onto a main body of an electrophotographic apparatus,

the electrophotographic photosensitive member comprising;

a support;

an intermediate layer formed on the support;

a charge generating layer formed directly on the intermediate layer; and

a charge transporting layer formed on the charge generating layer,

wherein;

the intermediate layer contains a polymer of a composition containing a compound represented by the formula (1);

when an averaged sectional difference of elevation in a calculated length range of from 0.1 μ

m or more to 100 μ

m or less in a surface of the intermediate layer on a charge generating layer side is measured, in a calculated length range of from 0.5 times or more to 1.5 times or less of a calculated length at which a maximum of the averaged sectional difference of elevation (Rmk,max) is expressed, a value for the averaged sectional difference of elevation (Rmk) is 0.05 μ

m or more; and

the charge generating layer contains a phthalocyanine pigment and a resin;

7. An electrophotographic apparatus, comprising:

an electrophotographic photosensitive member;

a charging unit;

an exposing unit;

a developing unit; and

a transferring unit,

the electrophotographic photosensitive member comprising;

a support;

an intermediate layer formed on the support;

a charge generating layer formed directly on the intermediate layer; and

a charge transporting layer formed on the charge generating layer,

wherein;

the intermediate layer contains a polymer of a composition containing a compound represented by the formula (1);

when an averaged sectional difference of elevation in a calculated length range of from 0.1 μ

m or more to 100 μ

m or less in a surface of the intermediate layer on a charge generating layer side is measured, in a calculated length range of from 0.5 times or more to 1.5 times or less of a calculated length at which a maximum of the averaged sectional difference of elevation (Rmk,max) is expressed, a value for the averaged sectional difference of elevation (Rmk) is 0.05 μ

m or more; and

the charge generating layer contains a phthalocyanine pigment and a resin;