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Electrophotographic photoreceptor, method of producing the same, process cartridge, and image-forming apparatus

A technology of electrophotography and manufacturing method, which is applied to the equipment of the electric recording process using the charge pattern, the electric recording process using the charge pattern, optics, etc., so as to reduce the amount of waste liquid, suppress ghosting, and suppress the occurrence of ghosting Effect

Inactive Publication Date: 2010-06-23
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It was found that the aforementioned problems can be solved when the following means are adopted

Method used

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  • Electrophotographic photoreceptor, method of producing the same, process cartridge, and image-forming apparatus
  • Electrophotographic photoreceptor, method of producing the same, process cartridge, and image-forming apparatus
  • Electrophotographic photoreceptor, method of producing the same, process cartridge, and image-forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0260] Manufacture of photoreceptor

[0261] The cylindrical aluminum base has an outer diameter of 30 mm and a length of 253 mm. The outer peripheral surface of the cylindrical aluminum base was ground using a centerless grinding apparatus so that the surface roughness (ten-point average roughness) Rz of the cylinder was 0.6 μm. The cylinder was degreased, then etched with a 2% by weight aqueous sodium hydroxide solution for 1 minute, followed by neutralization and washing with pure water.

[0262] Then, the aluminum substrate was anodized with a 10% by weight sulfuric acid solution (current density: 1.0A / dm 2 ), thereby forming an oxide film on its surface. After washing with water, the substrate was immersed in a 1% by weight nickel acetate solution at 80° C. for 20 minutes to seal the anodized film. In addition, the substrate was washed with pure water and dried. In this way, a cylindrical support having an anodized film having a thickness of 7 μm formed on its outer p...

Embodiment 2

[0279] Photoreceptor 2 was produced in the same preparation manner as the charge generation layer of Example 1, except that the solid content and viscosity of the coating liquid, and the setting conditions of the droplet ejection head and the coating conditions were changed as in Table 2 shown.

[0280] The control state of the frequency of the droplet ejection head in embodiment 2 is as follows Figure 19A shown in .

Embodiment 3

[0282] Photoreceptor 3 was produced in the same preparation manner as the charge generating layer of Example 1, except that the solid content and viscosity of the coating liquid, and the setting conditions of the droplet ejection head and the coating conditions were changed as in Table 2 shown.

[0283] Control the frequency of the droplet ejection head of the coating liquid 3-1 in the embodiment 3 in the same manner as the coating liquid 1-1 in the embodiment 1, and use the same method as the coating liquid 1-2 in the embodiment 1. Control the frequency of the droplet ejection head of the coating liquid 3-2 in a manner. its status as Figure 19A shown in .

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Abstract

The invention provides an electrophotographic photoreceptor that includes a cylindrical support, and a charge-generating layer and a charge-transporting layer on the cylindrical support, wherein a content per unit volume of a charge-generating material in the charge-generating layer increases from a center portion in an axial direction of the cylindrical support towards both end portions thereof,and a thickness of the charge-generating layer in an axial direction of the cylindrical support is 95% or more and 105% or less relative to an average thickness of the charge-generating layer.

Description

technical field [0001] The present invention relates to an electrophotographic photoreceptor, a method of manufacturing the electrophotographic photoreceptor, a process cartridge equipped with the electrophotographic photoreceptor, and an image forming apparatus. Background technique [0002] In recent years, digitization of copiers and printers employing an electrophotographic method has been greatly advanced, and among them, devices using laser light as an optical recording method have become mainstream. Generally, a latent image is written by scanning laser light in spots in the axial direction of a photoreceptor using a laser scanning writing device. Due to the cost reduction and miniaturization of prism scanners, laser beam printers using the electrophotography method have been used for personal use, but in order for laser beam printers to compete with printers using the inkjet method in the field of small printers, it is necessary Carry out further cost reduction and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G5/04G03G15/00G03G21/18
CPCG03G5/04G03G5/0525G03G5/047
Inventor 多田一幸稻垣智丈我妻优佐藤智正
Owner FUJIFILM BUSINESS INNOVATION CORP
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