ELECTROCONDUCTIVE SUPPORT BODY AND METHOD FOR MANUFACTURING SAME, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND ELECTROPHOTOGRAPHIC DEVICE

• US 20190384191A1
• Filed: 08/23/2019
• Published: 12/19/2019
• Est. Priority Date: 10/18/2017
• Status: Active Grant

• Current Assignee: Fuji Electric Company Limited (Fuji Electric Systems Company Limited)
• Original Assignee: Fuji Electric Company Limited (Fuji Electric Systems Company Limited)
• Inventors: KOBAYASHI, Hirotaka
• Granted Patent: US 10,642,174 B2
• Time in Patent Office: Days
• CPC Class Codes: G03G 15/00 Apparatus for electrographic processes using a charge pattern G03G16/00, G03G17/00 take precedence ; xerographic printers for data processors per se G06K15/14
• CPC Class Codes: G03G 15/0808 characterised by the developer supplying means, e.g. structure of developer supply roller
• 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 2215/00957 Compositions
• CPC Class Codes: G03G 2215/025 using contact charging means having lateral dimensions related to other apparatus means, e.g. photodrum, developing roller
• CPC Class Codes: G03G 5/0436 combining organic and inorganic layers
• CPC Class Codes: G03G 5/0507 Inorganic compounds
• CPC Class Codes: G03G 5/051 Organic non-macromolecular compounds
• CPC Class Codes: G03G 5/0567 Other polycondensates comprising oxygen atoms in the main chain; Phenol resins
• CPC Class Codes: G03G 5/10 Bases for charge-receiving or other layers
• CPC Class Codes: G03G 5/102 consisting of or comprising metals

Abstract

An electrically conductive support for use in an electrophotographic photoreceptor includes a cylindrical main body having a first end and a second end opposite to the first end in an axial direction of the main body. The main body contains an aluminum alloy and has an internal stress in a range of −30 MPa to 5 MPa. A method of producing the electrically conductive support includes preparing a substrate containing an aluminum alloy obtained at least through an extrusion step, and heat treating the substrate to obtain the electrically conductive support. The heat treating is carried out such that, when a temperature of the heat treating is defined as T (° C.) and a time of the heat treating is defined as H (hours), an amount of the heat treating Q defined by Q=T×H is 800 or less.

Claims

1. An electrically conductive support for use in an electrophotographic photoreceptor, comprising:

a cylindrical main body having

a first end, and

a second end opposite to the first end in an axial direction of the main body,

wherein

the main body contains an aluminum alloy, and has an internal stress in a range of −

30 MPa to 0 MP.

2. The electrically conductive support according to claim 1,

wherein the main body is a cylindrical tube, and

wherein the cylindrical tube is a straight tube having the first end and the second end opposite to the first end in the longitudinal direction, the cylindrical tube having a constant inner outer diameter and a constant thickness an entire area between the first end and the second end.

3. The electrically conductive support according to claim 2, wherein the cylindrical tube has the outer diameter of 40 mm or less, and the thickness in a range of 0.5 mm to 0.8 mm.

4. The electrically conductive support according to claim 2, wherein the cylindrical tube has a deflection of 30 μ

m or less.

5. A method of producing the electrically conductive support according to claim 1, comprising:

preparing a substrate obtained from an extrusion process, the substrate containing an aluminum alloy; and

heat treating the substrate to obtain the electrically conductive support, wherein

the heat treating is carried out such that, when a temperature of the heat treating is defined as T (°

C.) and a time of the heat treating is defined as H (hours), an amount of the heat treating Q defined by Q=T×

H is 800 or less.

6. An electrophotographic photoreceptor, comprising:

the electrically conductive support according to claim 1; and

a photosensitive layer disposed an outer surface of the main body.

7. The electrophotographic photoreceptor according to claim 6, wherein the photosensitive layer contains an inorganic or organic filler.

8. The electrophotographic photoreceptor according to claim 6, wherein the photosensitive layer contains at least a resin binder and a charge transport material.

9. An electrophotographic device comprising the electrophotographic photoreceptor according to claim 6.