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Photoreceptor for electrophotography, method for producing same, and electrophotographic device

An electrophotographic and photoreceptor technology, applied in optics, electrography, instruments, etc., can solve the problems of ghost images or thick characters, insufficient potential stability, and difficulty in obtaining stable and good images.

Pending Publication Date: 2022-06-21
FUJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the case of using an azoquinone derivative having the above-mentioned specific structure, the potential stability during repeated use in a low-temperature and low-humidity environment is insufficient, ghost images or characters become thicker, etc., and it is difficult to obtain a stable and good product. image tendencies

Method used

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  • Photoreceptor for electrophotography, method for producing same, and electrophotographic device
  • Photoreceptor for electrophotography, method for producing same, and electrophotographic device
  • Photoreceptor for electrophotography, method for producing same, and electrophotographic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] As the conductive substrate, a tube with a thickness of 0.75 mm made of aluminum having a surface roughness (Rmax) of 0.2 μm, which was machined into a diameter of 30 mm×length of 252.6 mm, was used. The conductive base has an acid-resistant aluminum layer on the surface.

[0134] [Charge Transport Layer]

[0135] The compound represented by the above-mentioned structural formula (HT1-5) as a hole transport material and the repeating unit represented by the above-mentioned structural formula (GB1-1) as a resin binder were prepared according to the compounding amounts shown in Table 1 below. The polycarbonate resin was dissolved in tetrahydrofuran to prepare a coating solution. This coating liquid was applied on the above-mentioned conductive substrate by a dip coating method, and dried at 100° C. for 30 minutes to form a charge transport layer with a film thickness of 10 μm.

[0136] [Charge Generation Layer]

[0137] According to the compounding amounts shown in Tab...

Embodiment 2～30 and comparative example 1～11

[0141] Under the conditions shown in the following Tables 1 to 3, except that the type of each material, the blending amount, and the film thickness of each layer were changed in the same manner as in Example 1, a positive-charging laminated electrophotographic photoreceptor was obtained . The structural formulas of the materials used in the comparative examples are shown below.

[0142]

[0143] Here, among the electron transport materials used in Examples 2 to 30 and Comparative Examples 1 to 11, the solubility S of the azoquinone derivatives having the structure represented by the above-mentioned structural formula (ET1-5) ETM (THF) is 1(g), the solubility S of the azoquinone derivative having the structure represented by the above-mentioned structural formula (ET1-3) ETM (THF) is 1(g) or less and the solubility S of the azoquinone derivative having the structure represented by the above-mentioned structural formula (ET-1) ETM (THF) is 3(g), the solubility S of the azo...

Embodiment 31

[0174] As the conductive substrate, a tube with a thickness of 0.75 mm and made of aluminum having a surface roughness (Rmax) of 0.2 μm, which was machined into a diameter of 30 mm×length of 244.5 mm, was used. The conductive base has an acid-resistant aluminum layer on the surface.

[0175] [Single-layer type photosensitive layer]

[0176] According to the compounding amounts shown in the following Table 6, the compound represented by the above-mentioned structural formula (HT1-5) as a hole transport material, the compound represented by the above-mentioned structural formula (ET1-3) as an electron transport material, and A polycarbonate resin having a repeating unit represented by the above structural formula (GB1-1) as a resin binder is dissolved in tetrahydrofuran, and after adding the oxytitanium phthalocyanine represented by the above structural formula (CG1) as a charge generating material, By using a disperser (DYNO-MILL research laboratory type manufactured by Huaerb...

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Abstract

The present invention provides a high-sensitivity liquid crystal display having sufficiently high sensitivity, excellent potential stability during repeated printing in a wide variety of environments, and high reliability even when applied to a single-color high-speed printer, a small-sized medium-speed tandem color printer, or the like, in particular, and a method for manufacturing the liquid crystal display device using the high-sensitivity liquid crystal display device. A photoreceptor for electrophotography, a method for manufacturing the same, and an electrophotographic device are provided, and problems such as gradation deterioration and memory image occurrence do not occur. A positively charged electrophotographic photoreceptor provided with a conductive substrate (1) and a photosensitive layer provided on the conductive substrate, in which the photosensitive layer contains electron transport materials, and at least one of the electron transport materials contains an azoquinone derivative having a structure represented by general formula (ET1).

Description

technical field [0001] The present invention relates to a photoreceptor for electrophotography (hereinafter also simply referred to as "photoreceptor") used in an electrophotographic printer, copier, facsimile machine, and the like, a method for producing the same, and an electrophotographic apparatus. Background technique [0002] The electrophotographic photoreceptor adopts a structure in which a photosensitive layer having a photoconductive function is provided on a conductive substrate as a basic structure. In recent years, organic electrophotographic photoreceptors using organic compounds as functional components responsible for generating and transporting charges have been actively researched and developed due to their advantages such as material diversity, high productivity, and safety. copiers, printers, etc. [0003] In general, a photoreceptor must have a function of maintaining a surface charge in a dark place, a function of receiving light and generating an elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/047G03G5/05
CPCG03G5/047G03G5/0525G03G5/0528G03G5/0618G03G5/0677
Inventor 北川清三铃木信二郎江森弘根桥和希
Owner FUJI ELECTRIC CO LTD
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