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Electrophotographic photoreceptor, method for producing same, and electrophotographic device

An electrophotographic and photoreceptor technology, applied in optics, electrographics, instruments, etc., can solve the problems of difficulty in obtaining durability, dispersibility, impurities, and insufficient review of the solubility of compatible resins, and achieve stable image quality. The effect of controlling wear performance

Inactive Publication Date: 2018-06-08
FUJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, Patent Documents 2 and 3 propose a polycarbonate resin containing a specific structure, but the compatibility with various charge-transporting agents or additive materials, or the solubility of the resin are insufficiently examined.
In addition, Patent Document 4 proposes a polycarbonate resin with a specific structure, but since there are many spaces between the polymers of the resin with a bulky structure, discharge substances, contact members, foreign objects, etc. are easily permeated during charging. In the photosensitive layer, it is difficult to obtain sufficient durability
In order to improve printing resistance and coating properties, polycarbonate with a special structure is proposed in Patent Document 5, but there are insufficient descriptions about the charge transporting material or additives to be combined, and there is a problem that it is difficult to maintain stable electrical characteristics during long-term use. question
[0009] In Patent Document 6, it is proposed to contain filler particles in the photosensitive layer in order to improve abrasion resistance. The effect of method or impurity control and surface treatment has not been fully verified
In addition, Patent Document 7 proposes a charge transport layer in which calcined silica is dispersed, but does not describe the transmittance of a slurry liquid in which silica is dispersed in a solvent.
Furthermore, although the metal elements contained in silicon dioxide are described in Patent Document 8, in Patent Document 8, the technical idea about the presence or absence of metal elements is described only from the viewpoint of the cause of increased manufacturing cost, but it does not Describe the amount of impurities mentioned from the viewpoint of dispersibility improvement

Method used

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  • Electrophotographic photoreceptor, method for producing same, and electrophotographic device
  • Electrophotographic photoreceptor, method for producing same, and electrophotographic device
  • Electrophotographic photoreceptor, method for producing same, and electrophotographic device

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Embodiment

[0131] Hereinafter, specific embodiments of the present invention will be described in detail using examples. The present invention is not limited to the following examples without departing from the scope of the inventive idea.

[0132] (Preparation of Inorganic Oxide Slurry)

manufacture example 1～44

[0134] In accordance with the production examples shown in Tables 1 and 2, an inorganic oxide slurry was prepared. Specifically, as the inorganic oxide, silica (YA010C (500 ppm of aluminum element content), YA050C (900 ppm of aluminum element content), YA100C (900 ppm of aluminum element content) manufactured by Yadomar Co., Ltd., silica F (aluminum element content of 900 ppm) and silica F (aluminum element content 10ppm), silica G (aluminum element content 100ppm), prepared surface-treated silica that was surface-treated using the treatment agent described in Table 1 as the surface treatment agent, and dispersed (primary dispersion) in In tetrahydrofuran (THF) for photosensitive layer coating solution. As a result of quantifying the amount of the surface treatment agent for the surface-treated inorganic oxides of Production Examples 1, 21, and 33, it was found that the amounts of the surface treatment agent were 1.0, 0.2, and 0.1% by mass, respectively, relative to the treate...

Embodiment 1

[0159] Coating solution 1 was prepared by dissolving and dispersing 5 parts by mass of alcohol-soluble nylon (manufactured by Toray Corporation, trade name "CM8000") and 5 parts by mass of aminosilane-treated titanium oxide fine particles in 90 parts by mass of methanol. This coating liquid 1 was dip-coated on the outer periphery of an aluminum cylinder with an outer diameter of 30 mm as a conductive substrate 1 as a base layer, and dried at a temperature of 100° C. for 30 minutes to form a base layer 2 with a film thickness of 3 μm.

[0160] 1 part by mass of Y-type oxytitanium phthalocyanine as a charge generating material, and 1.5 parts of polyvinyl butyral resin (manufactured by Sekisui Chemical Co., Ltd., trade name "Esreck BM-2") as a resin binder. Parts by mass were dissolved and dispersed in 60 parts by mass of dichloromethane to prepare a coating solution 2 . This coating solution 2 was dip-coated on the base layer 2, and dried at a temperature of 80° C. for 30 minute...

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Abstract

Provided are: an electrophotographic photoreceptor that makes it possible to achieve a stable image exhibiting little wear even when used over a long period of time; a method for producing the electrophotographic photoreceptor; and an electrophotographic device. The electrophotographic receptor is provided with a conductive substrate 1 and a photosensitive layer that is formed on the conductive substrate 1 and that contains an inorganic oxide. The light transmittance is 40% or more when light having a wavelength of 780 nm is used to irradiate a 20 mass% inorganic oxide slurry having dispersedtherein 20 mass% of the inorganic oxide with respect to a solvent for use in a photosensitive layer application liquid for applying and forming the photosensitive layer.

Description

technical field [0001] The present invention relates to an electrophotographic photoreceptor (hereinafter also simply referred to as "photoreceptor") used in an electrophotographic printer, copier, facsimile, etc., its manufacturing method, and an electrophotographic device. Electrophotographic photoreceptor for achieving excellent abrasion resistance or stability of electrical characteristics by inorganic oxide, method for producing the same, and electrophotographic device. Background technique [0002] A photoreceptor for electrophotography has a basic structure in which a photosensitive layer having a photoconductive function is provided on a conductive substrate. In recent years, research and development have been actively carried out on photoreceptors for organic electrophotography that use organic compounds as functional components responsible for generation or transport of charges, taking advantage of the diversity of materials, high productivity, and safety. Copiers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/05
CPCG03G5/05G03G5/0507G03G5/051G03G5/0564G03G5/0578
Inventor 铃木信二郎长谷川知贵朱丰强小川祐治小林广高
Owner FUJI ELECTRIC CO LTD
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