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Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

一种电子照相、感光构件的技术，应用在应用电荷图形的电记录工艺的设备、应用电荷图形的电记录工艺、光学等方向，能够解决成本提高、尺寸变大等问题

Active Publication Date: 2020-12-25
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case where such a deviation of light quantity distribution is uniformized by control of an optical system or electric correction, etc., an increase in cost and an increase in size are caused

Method used

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  • Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
  • Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
  • Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] An aluminum cylinder (JIS-A3003, aluminum alloy) having a length of 260.5 mm and a diameter of 30 mm was set on a support (conductive support).

[0135] Then, prepare the following materials.

[0136] 214 parts covered with oxygen-deficient tin oxide (SnO 2 ) Titanium oxide (TiO 2 ) particles (the number average primary particle size is 200nm) as metal oxide particles

[0137] 132 parts of phenolic resin (product name: Priophene J-325) as binder resin

[0138] 40 parts methanol

[0139] 58 parts of 1-methoxy-2-propanol

[0140] Put these materials into a sand mill using 450 parts of glass beads with a diameter of 0.8mm, and perform dispersion treatment under the conditions of rotation number: 2000rpm, dispersion treatment time: 4.5 hours and set temperature of cooling water: 18°C, Thus, a dispersion liquid was obtained. The glass beads were removed from the dispersion through a sieve (pore size: 150 μm). The following materials were added to the dispersion liquid...

Embodiment 2 to 22

[0178] In Example 1, the film thicknesses of the charge generating layer and the charge transporting layer were set to the values ​​shown in Table 1 by changing the lifting speed at the time of dip coating. Except for this, an electrophotographic photosensitive member was manufactured in the same manner as in Example 1, and ghost evaluation was performed similarly. Each characteristic of the obtained electrophotographic photosensitive member is shown in Table 2, and the results of ghost evaluation are shown in Table 3.

Embodiment 23

[0180] In Example 1, the content of the charge transporting substance used to form the charge transporting layer was changed from 7 parts to 5 parts, and the content of the polyester resin was changed from 10 parts to 11 parts. Except for this, an electrophotographic photosensitive member was manufactured in the same manner as in Example 1, and ghost evaluation was performed similarly. Each characteristic of the obtained electrophotographic photosensitive member is shown in Table 2, and the results of ghost evaluation are shown in Table 3.

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Abstract

The invention relates to an electrophotographic photosensitive member, a process cartridge, and an electrophotographic apparatus. An electrophotographic photosensitive member, including a cylindricalsupport, a charge generating layer formed on the cylindrical support, and a charge transport layer formed on the charge generating layer, in which in the charge generating layer, when a region from acentral position of an image forming region to an end position of the image forming region in an axis direction of the cylindrical support is divided equally into five regions, film thicknesses of thecharge generating layers in each of the regions satisfy a specific relationship with each other, and in the charge transport layer, when a region from the central position of the image forming regionto the end position of the image forming region in the axis direction of the cylindrical support is divided equally into five regions, film thicknesses of the charge transport layers in each of the regions satisfy a specific relationship with each other.

Description

technical field [0001] The present invention relates to an electrophotographic photosensitive member, a process cartridge having the electrophotographic photosensitive member, and an electrophotographic apparatus having the electrophotographic photosensitive member. Background technique [0002] In recent years, semiconductor lasers are mainstream as exposure units used in electrophotographic apparatuses. Generally, a laser beam emitted from a light source is scanned in the axial direction of a cylindrical electrophotographic photosensitive member (hereinafter, also simply referred to as a photosensitive member) by a laser scanning writing device. The amount of light applied to the photosensitive member is controlled by an optical system such as a polygon mirror and various electric correction units and the like used at this time so that the amount of light is uniform in the axial direction of the photosensitive member. [0003] The cost of the above-mentioned polygon mirro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/047G03G21/18
CPCG03G5/047G03G21/1814G03G5/0696G03G15/751G03G5/0688G03G5/0564
Inventor 关谷道代渡口要川原正隆石田知仁牧角康平
Owner CANON KK
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