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Electrophotographic photoreceptor for blue-violet exposure light source and electrophotographic imaging apparatus employing the same

An electrophotography and imaging device technology, applied in the electrical recording process using charge patterns, equipment, optics, etc., can solve the problems of reduced light absorption, reduced light energy, and insufficient photosensitivity. achieve high resolution

Inactive Publication Date: 2007-02-21
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, insufficient photosensitivity in the blue-violet range due to reduced light absorption of acceptor compounds and reduced effective light energy

Method used

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  • Electrophotographic photoreceptor for blue-violet exposure light source and electrophotographic imaging apparatus employing the same
  • Electrophotographic photoreceptor for blue-violet exposure light source and electrophotographic imaging apparatus employing the same
  • Electrophotographic photoreceptor for blue-violet exposure light source and electrophotographic imaging apparatus employing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] 2 parts by weight of α-titanyl phthalocyanine and 2 parts by weight of polycarbonate Z resin (PANLITETS-2020, Teijin Kasei Co.) were mixed with 46 parts by weight of chlorobenzene. The mixture was ground with a sand mill for 1 hour to finely disperse it.

[0060]35 parts by weight of the compound (1) based on arylamine as the hole transport material, 15 parts by weight of the compound (2) based on naphthalene tetracarboxylic acid diimide and 50 parts by weight of polycarbonate as the electron transport material Ester Z resin was dissolved in 300 parts by weight of chloroform.

[0061]

[0062] The dispersed substance and the solution were mixed in a weight ratio of 1:8. The mixture was dispersed homogeneously with a homogenizer, thereby obtaining a coating slurry for forming a photosensitive layer. The coating slurry was coated onto a 30 nm diameter anodized aluminum drum (anodized layer thickness: 5 μm) with a ring bar, and then dried, whereby a single-layer elect...

Embodiment 2

[0064] A photoreceptor drum was produced in the same manner as in Example 1 except that the weight ratio of the dispersed substance and the solution was 1:4. The transmittance measured at a wavelength of 405nm is 5.5×10 -2 .

Embodiment 3

[0066] 40 parts by weight of arylamine-based compound (1), 60 parts by weight of polycarbonate Z resin as a hole transport material were dissolved in 300 parts by weight of chloroform, thereby obtaining a solution for forming a charge transport layer . The solution was applied onto a 30 mm diameter anodized aluminum drum (anodized layer thickness: 5 μm) using a ring bar, and then dried, whereby a charge transport layer having a thickness of about 8 μm was obtained.

[0067] The dispersed substance and solution used in Example 1 were mixed at a weight ratio of 1:2, whereby a dispersion for forming a charge generating layer was obtained. Next, this dispersion was applied onto the charge transport layer using a ring bar, followed by drying, whereby a charge generation layer having a thickness of about 7 μm was obtained.

[0068] The light transmittance at a wavelength of 405 nm of the obtained multilayer electrophotographic photoreceptor drum was 8.9×10 -2 .

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PUM

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Abstract

An electrophotographic photoreceptor and an electrophotographic imaging apparatus employing the photoreceptor are disclosed. The electrophotographic photoreceptor includes an electrically conductive substrate and a photosensitive layer formed on the electrically conductive substrate, wherein a latent image is formed on the photosensitive layer using a blue-violet exposure light source having a wavelength of 380 to 450 nm. The outer surface of the photosensitive layer includes a charge generating material, a charge transporting material, and a binder resin. The light transmittance of the photosensitive layer is 1.0x10<-1> to 1.0x10<-3> in the light exposure wavelength. The electrophotographic photoreceptor can provide high quality images with high resolution using the blue-violet exposure light source.

Description

[0001] Cross references to related patent applications [0002] This application claims priority from Korean Patent Application No. 10-2005-0055939 filed with the Korean Intellectual Property Office on Jun. 27, 2005, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to an electrophotographic photoreceptor and an electrophotographic image forming apparatus using the same. More specifically, the present invention relates to an electrophotographic photoreceptor using blue-violet light as an exposure light source to obtain high resolution and an electrophotographic device using the photoreceptor. Background technique [0004] Previously, AlGaAs / GaAs semiconductor lasers having oscillation wavelengths close to 800 nm in the near-infrared region have been widely used as exposure light sources in electrophotographic imaging devices. Despite the fact that the AlGaAs / GaAs semiconductor laser emits a longer wavelength ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/04G03G15/00
CPCG03G5/0672G03G5/0605G03G5/0614G03G5/047G03G5/0609G03G5/0651G03G5/04G03G5/06142
Inventor 横田三郎金范俊牧野要李桓求金承柱李知英
Owner SAMSUNG ELECTRONICS CO LTD
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