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Electronic photographic photoreceptor and image forming apparatus

An electrophotographic and photoreceptor technology, which is applied to the electric recording process using charge patterns, equipment and optics, etc., and can solve the problems of reduced charging, easy oxidative degradation of the photosensitive layer, and difficulty in charging potential. , to achieve the effect of suppressing the reduction of the charged potential

Active Publication Date: 2010-08-04
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in an electrophotographic photoreceptor using oxytitanium phthalocyanine crystals as a charge generator, the photosensitive layer is easily oxidized and deteriorated due to active gases such as ozone generated in the charging process, and there is a problem that it is difficult to obtain a sufficient charging potential.
Furthermore, when foreign matter such as paper powder adheres to the photosensitive layer, since the adhered matter promotes the oxidation degradation of the photosensitive layer, there is a problem that the charge is further reduced.

Method used

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  • Electronic photographic photoreceptor and image forming apparatus
  • Electronic photographic photoreceptor and image forming apparatus
  • Electronic photographic photoreceptor and image forming apparatus

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no. 1 approach

[0039] The first embodiment is a single-layer electrophotographic photoreceptor having a substrate and a photosensitive layer disposed on the substrate, wherein the photosensitive layer contains an oxytitanium phthalocyanine crystal as a charge generating agent, and contains an antioxidant and ultraviolet rays. Absorbents as additives. That is, by making the single-layer electrophotographic photoreceptor contain an antioxidant and an ultraviolet absorber as additives, reduction in charge can be effectively suppressed.

[0040] 1. Basic composition

[0041] figure 2 The single-layer type electrophotographic photoreceptor 1a (~1d) shown has image 3 The substrate 112 shown in (a), and the single-layer photosensitive layer 114 disposed on the substrate 112 and containing a charge generating agent, a charge transporting agent, and a binder resin.

[0042] In addition, if image 3 As shown in (b), a single-layer electrophotographic photoreceptor 1 a ′ in which the intermediate...

no. 2 approach

[0207] A second embodiment is an image forming apparatus including the single-layer electrophotographic photoreceptor of the first embodiment.

[0208] Hereinafter, an image forming apparatus according to a second embodiment will be specifically described in terms of its basic configuration, its electrophotographic photoreceptor, charging unit, exposing unit, developing unit, and static removing unit.

[0209] 1. Basic composition

[0210] Embodiments of the present invention will be described in detail below with reference to the drawings.

[0211] figure 2 It is a diagram showing an example of the image forming apparatus 100 of the tandem system according to the present invention. Such as figure 2 As shown, in the image forming apparatus 100 , a cyan image forming unit Pa, a magenta image forming unit Pb, a yellow image forming unit Pc, and a black image forming unit Pd are sequentially arranged from the upstream side toward the downstream side in the transfer paper con...

no. 3 approach

[0254] The third embodiment is an image forming method using the image forming apparatus described in the second embodiment.

[0255] Hereinafter, the content that overlaps with the second embodiment will be omitted, and for the characteristic content of the image forming method as the third embodiment, for an example of adopting the developing simultaneous cleaning method omitting the cleaning blade, the unit Pa for cyan image forming is represented as example for a specific description.

[0256] The charging unit 2a uniformly charges the peripheral surface of the rotating electrophotographic photoreceptor 1a. As the charging means 2a, a scorotron charger etc. are mentioned, for example. In addition, the exposure unit 4a is a so-called laser scanning unit, and irradiates laser light on the peripheral surface of the electrophotographic photoreceptor 1a uniformly charged by the charging unit 2a based on image data input from an image reading device or the like to form a laser ...

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Abstract

The invention provides a electronic photographic photoreceptor which can effectively restrain reduction of electrified electric potential, and an image forming apparatus having the electronic photographic photoreceptor. The electronic photographic photoreceptor of the invention has a basal body and a photographic layer configured on the basal body, wherein the photographic layer contains TiOPc crystal as charge generating agent, and contains antioxidant and ultraviolet absorbent as additive.

Description

technical field [0001] The present invention relates to an electrophotographic photoreceptor and an image forming apparatus, and more particularly, to an electrophotographic photoreceptor capable of effectively suppressing a decrease in charging potential, and an image forming apparatus including the electrophotographic photoreceptor. Background technique [0002] Currently, for the purpose of forming high-quality images at high speed, oxytitanium phthalocyanine crystals having excellent charge generation efficiency are used as charge generating agents. [0003] The oxytitanium phthalocyanine crystal is known to change its dispersibility and crystal stability in the photosensitive layer according to the change of its crystal form, and it is known that the charge generation efficiency is remarkably excellent compared with other charge generators (for example, Patent Document 1) . [0004] Therefore, by using oxytitanium phthalocyanine crystal as a charge generating agent, th...

Claims

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Application Information

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IPC IPC(8): G03G5/06G03G15/00
Inventor 浜崎一也渡边征正岩下裕子丸尾敬司山本洋平
Owner KYOCERA DOCUMENT SOLUTIONS INC
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