Method of preparing cylindrical metal member, metallic ingot for impact pressing, and method of preparing electrophotographic photoreceptor

Patent metadata

Field	Value
Publication number	US-10316397-B2
Application number	US-201615230608-A
Country	US
Kind code	B2
Filing date	Aug 8, 2016
Priority date	Mar 11, 2016
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

A method of preparing a cylindrical metal member includes preparing a metallic ingot having at least one surface having a mean width with respect to roughness Sm in a range of from 100 μm to 220 μm; imparting a lubricant to the at least one surface of the metallic ingot; and subjecting the metallic ingot to impact pressing while the surface coated with the lubricant with respect to the metallic ingot is set as a bottom surface, to thereby mold a cylindrical metal member.

First claim

What is claimed is:

1. A method of preparing a cylindrical metal member, the method comprising:
preparing a metallic ingot having at least one surface having a mean width with respect to roughness Sm in a range of from 100 μm to 220 μm;
imparting a lubricant to the at least one surface of the metallic ingot; and
subjecting the metallic ingot to impact pressing while the at least one surface coated with the lubricant is set as a bottom surface, to thereby mold a cylindrical metal member,
wherein a maximum height Ry of the at least one surface of the metallic ingot is from 10 μm to 30 μm.

2. The method of preparing a cylindrical metal member according to claim 1 ,
wherein the lubricant is a solid lubricant.

3. The method of preparing a cylindrical metal member according to claim 1 ,
wherein the metallic ingot contains aluminum.

4. The method of preparing a cylindrical metal member according to claim 1 ,
wherein the metallic ingot contains aluminum in an amount of 90.0% by weight or more.

5. The method of preparing a cylindrical metal member according to claim 1 ,
wherein the metallic ingot contains aluminum in an amount of 93.0% by weight or more.

6. The method of preparing a cylindrical metal member according to claim 1 ,
wherein the metallic ingot contains aluminum in an amount of 95.0% by weight or more.

7. The method of preparing a cylindrical metal member according to claim 1 , wherein the method further comprises:
subjecting at least one surface of the metallic ingot to shot peening to thereby prepare the metallic ingot having at least one surface having a mean width Sm with respect to roughness in a range of from 100 μm to 220 μm.

8. The method of preparing a cylindrical metal member according to claim 1 ,
wherein, in imparting a lubricant to the at least one surface of the metallic ingot, an amount of the lubricant is from 0.5 mg/cm 2 to 1.5 mg/cm 2 .

9. The method of preparing a cylindrical metal member according to claim 1 ,
wherein, in imparting a lubricant to the at least one surface of the metallic ingot, an amount of the lubricant is from 0.5 mg/cm 2 to 1.0 mg/cm 2 .

10. The method of preparing a cylindrical metal member according to claim 1 ,
wherein, in imparting a lubricant to the at least one surface of the metallic ingot, an amount of the lubricant is from 0.6 mg/cm 2 to 0.9 mg/cm 2 .

11. The method of preparing a cylindrical metal member according to claim 1 , wherein the method further comprises:
ironing the cylindrical member after the impact pressing.

12. The method of preparing a cylindrical metal member according to claim 1 ,
wherein the cylindrical metal member is an electrophotographic photoreceptor substrate.

13. A method of preparing a cylindrical metal member, the method comprising:
preparing a metallic ingot having at least one surface having a mean width with respect to roughness Sm in a range of from 100 μm to 220 μm;
imparting a lubricant to the at least one surface of the metallic ingot; and
subjecting the metallic ingot to impact pressing while the at least one surface coated with the lubricant is set as a bottom surface, to thereby mold a cylindrical metal member,
wherein a maximum height Ry of the at least one surface of the metallic ingot is from 10 μm to 20 μm.

14. A method of preparing an electrophotographic photoreceptor, the method comprising:
preparing a cylindrical metal member prepared according to the method of preparing a cylindrical metal member according to claim 11 , as an electrophotographic photoreceptor substrate; and
forming a photosensitive layer on an outer circumferential surface of the cylindrical metal member.

Assignees

• Fuji Xerox Co Ltd

Inventors

• Sato Akira
• Haruyama Daisuke

Classifications

• B21C23/186

  by backward extrusion · CPC title

• G03G5/102

  consisting of or comprising metals · CPC title

• B21C1/003

  Drawing materials of special alloys so far as the composition of the alloy requires or permits special drawing methods or sequences · CPC title

• B21C1/26

  Push-bench drawing · CPC title

• C22F1/04 Primary

  of aluminium or alloys based thereon · CPC title