Electrophotographic photosensitive member, method for producing electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and hydroxygallium phthalocyanine crystal

Patent metadata

Field	Value
Publication number	US-9519232-B2
Application number	US-201514693081-A
Country	US
Kind code	B2
Filing date	Apr 22, 2015
Priority date	Apr 24, 2014
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

An electrophotographic photosensitive member includes a support and a photosensitive layer on the support, and the photosensitive layer contains a hydroxygallium phthalocyanine crystal having peaks at Bragg angles 2θ±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuKα X-ray diffraction.

First claim

What is claimed is:

1. A hydroxygallium phthalocyanine crystal comprising peaks at Bragg angles 2θ±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuKα X-ray diffraction.

2. The hydroxygallium phthalocyanine crystal according to claim 1 , further comprising peaks at Bragg angles 2θ±0.2° of 12.0°, 19.0°, 23.0°, and 27.6° in CuKα X-ray diffraction.

3. The hydroxygallium phthalocyanine crystal according to claim 1 , further comprising peaks at Bragg angles 2θ±0.2° of 8.3°, 17.1°, and 25.3° in CuKα X-ray diffraction.

4. The hydroxygallium phthalocyanine crystal according to claim 1 , further comprising peaks at Bragg angles 2θ±0.2° of 13.2°, 17.1°, and 27.3° in CuKα X-ray diffraction.

5. An electrophotographic photosensitive member comprising:
a support; and
a photosensitive layer on the support;
wherein the photosensitive layer comprises a hydroxygallium phthalocyanine crystal having peaks at Bragg angles 2θ±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuKα X-ray diffraction.

6. The electrophotographic photosensitive member according to claim 5 , wherein the hydroxygallium phthalocyanine crystal further has peaks at Bragg angles 2θ±0.2° of 12.0°, 19.0°, 23.0°, and 27.6° in CuKα X-ray diffraction.

7. The electrophotographic photosensitive member according to claim 5 , wherein the hydroxygallium phthalocyanine crystal further has peaks at Bragg angles 2θ±0.2° of 8.3°, 17.1°, and 25.3° in CuKα X-ray diffraction.

8. The electrophotographic photosensitive member according to claim 5 , wherein the hydroxygallium phthalocyanine crystal further has peaks at Bragg angles 2θ±0.2° of 13.2°, 17.1°, and 27.3° in CuKα X-ray diffraction.

9. The electrophotographic photosensitive member according to claim 5 ,
wherein the photosensitive layer comprises a charge generating layer and a charge transporting layer on the charge generating layer, and
the charge generating layer comprises the hydroxygallium phthalocyanine crystal.

10. A process cartridge detachably attachable to a main body of an electrophotographic apparatus, wherein the process cartridge integrally supports the electrophotographic photosensitive member according to claim 5 , and at least one selected from the group consisting of a charging device, a developing device, a transfer device, and a cleaning member.

11. An electrophotographic apparatus comprising:
the electrophotographic photosensitive member according to claim 5 ;
a charging device;
an exposure device;
a developing device; and
a transfer device.

12. A method for producing an electrophotographic photosensitive member comprising a support and a photosensitive layer on the support, wherein the method comprises the steps of:
providing a hydroxygallium phthalocyanine crystal having peaks at Bragg angles 2θ±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuKα X-ray diffraction by adding an amide compound and a hydroxygallium phthalocyanine and performing a milling treatment; and
forming a photosensitive layer by forming a coating film of a photosensitive layer-forming coating solution containing the hydroxygallium phthalocyanine crystal and drying the coating film,
wherein the amide compound is at least one selected from the group consisting of a compound represented by formula (1) below, a compound represented by formula (2) below, and a compound represented by formula (3) below.

13. A method for producing an electrophotographic photosensitive member comprising a support, a charge generating layer on the support, and a charge transporting layer on the charge generating layer, wherein the method comprises the steps of:
providing a hydroxygallium phthalocyanine crystal having peaks at Bragg angles 2θ±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuKα X-ray diffraction, by adding an amide compound and a hydroxygallium phthalocyanine and performing a milling treatment; and
forming a charge generating layer by forming a coating film of a charge generating layer-forming coating solution containing the hydroxygallium phthalocyanine crystal and drying the coating film,
wherein the amide compound is at least one selected from the group consisting of a compound represented by formula (1) below, a compound represented by formula (2) below, and a compound represented by formula (3) below.

Assignees

• Canon Kk

Inventors

• Kawahara Masataka
• Nishida Tsutomu
• Kuno Junpei
• Tanaka Masato
• Watariguchi Kaname

Classifications

• G03G5/0662 Primary

  containing metal elements · CPC title

• G03G5/0696 Primary

  Phthalocyanines · CPC title