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Electrophotographic photoreceptor, manufacturing method therefor, and electrophotographic device

An electrophotographic and photoreceptor technology, which is applied in the electrical recording process using charge patterns, the equipment and optics of the electrical recording process applying charge patterns, etc. Excellent solvent and crack resistance, excellent sensitivity characteristics

Inactive Publication Date: 2020-10-02
FUJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even in this photoreceptor, the effect of preventing the elution of the charge transport agent into the liquid developer is insufficient, and the crack resistance cannot be said to be sufficient.

Method used

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  • Electrophotographic photoreceptor, manufacturing method therefor, and electrophotographic device
  • Electrophotographic photoreceptor, manufacturing method therefor, and electrophotographic device
  • Electrophotographic photoreceptor, manufacturing method therefor, and electrophotographic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] 15 parts by mass of p-vinylphenol resin (trade name Malkarinka MH-2: manufactured by Maruzen Petrochemical Co., Ltd.) and 10 parts by mass of N-butylated melamine resin (trade name Yuban 2021: manufactured by Mitsui Chemicals Co., Ltd.) were carried out. 75 parts by mass of the aminosilane-treated titanium oxide fine particles are respectively dissolved or dispersed in a methanol / butanol mixed solvent of 750 parts by mass / 150 parts by mass to prepare a coating solution for forming an intermediate layer. A conductive substrate made of an aluminum alloy having an outer diameter of 30 mm and a length of 255 mm was immersed in the obtained coating solution for the intermediate layer, and then lifted up to form a coating film on the outer periphery. The substrate was dried at a temperature of 140°C for 30 minutes to form an intermediate layer with a film thickness of 3 μm.

[0099] Next, using a sand mixing and dispersing machine, 15 parts by mass of Y-type oxytitanium phthaloc...

Embodiment 2～4、6、7

[0104] [Examples 2 to 4, 6, 7, and Comparative Examples 1 to 4]

[0105] The negatively charged laminated electrophotographic sensitization was carried out by the same method as in Example 1, except that the type and the amount of the binder resin and the hole transport material of the charge transport layer in Example 1 were changed as shown in Table 1 below. Body preparation.

[0106] The materials used are as follows.

[0107]

[0108] [Viscosity average molecular weight: 50,500]

[0109]

[0110] [Viscosity average molecular weight: 52,500]

[0111]

Embodiment 5

[0113] Except that the binder resin of the charge transport layer in Example 1 is changed to the above structural formula (B-1), n / (m+n)=0.6, and the chain terminal group has the following structural formula (4)

[0114]

[0115] A negatively charged laminated electrophotographic photoreceptor was prepared by the same method as in Example 1, except for the copolymer polycarbonate resin having a viscosity average molecular weight of 49,500 with the structure shown.

[0116] [Table 1]

[0117]

[0118] Using the photoreceptors prepared in Examples 1 to 7 and Comparative Examples 1 to 4, the sensitivity characteristics and solvent resistance (the amount of elution of the hole transporting substance and the presence or absence of cracks) were evaluated by the following evaluation methods, respectively.

[0119] [Sensitivity characteristic evaluation]

[0120] For the obtained photoreceptor, using an electrical characteristic tester (CYNTHIA, manufactured by Gentec), the sensitivity characte...

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Abstract

The present invention provides, at a low cost: an electrophotographic photoreceptor that has sufficient solvent resistance and crack resistance when used in a liquid development system and that also has superior electrical characteristics; a manufacturing method therefor; and an electrophotographic device. Provided is an electrophotographic photoreceptor including: an electroconductive substrate 1; and a charge generation layer 3 and a charge transport layer 4 sequentially provided on the electroconductive substrate. The charge transport layer contains, as a binder resin, a copolymerized polycarbonate resin having a structure represented by general formula (1) and contains, as a hole transport substance, a compound having a structure represented by general formula (2).

Description

Technical field [0001] The present invention relates to an electrophotographic photoreceptor (hereinafter also referred to as "photoreceptor") used in electrophotographic copiers and printers, a method of manufacturing the photoreceptor, and an electrophotographic device. In detail, it relates to a charge transport layer containing a specific A negatively charged laminated electrophotographic photoreceptor for liquid development with excellent solvent resistance and good electrical properties, a method for manufacturing the same, and an electrophotographic device using a liquid development method. Background technique [0002] In the electrophotographic process, as a development method to visualize the electrostatic latent image on the photoreceptor, there are roughly dry development methods using powder toner and liquid development using toner dispersed in an insulating liquid. The liquid developing method of the agent. In general office applications, dry developing devices are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/05G03G5/06G03G9/125
CPCG03G15/75G03G5/0564G03G5/0672G03G5/0696G03G5/06144G03G5/061473G03G5/0525G03G15/108
Inventor 竹内胜小林广高朱丰强
Owner FUJI ELECTRIC CO LTD
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