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Positively chargeable monolayer electrophotographic photosensitive member and image forming apparatus

An electrophotography, single-layer type technology, applied to the electrical recording process using the charge pattern, the equipment of the electric recording process using the charge pattern, optics, etc., can solve the problem that it is difficult to obtain the sensitivity characteristics

Active Publication Date: 2014-06-11
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, even when triarylamine derivatives (HTM-A and HTM-B) described in Patent Document 1 are used, it may be difficult to obtain good sensitivity characteristics by combining them with a binder resin or an electron transport material constituting the photosensitive layer.

Method used

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  • Positively chargeable monolayer electrophotographic photosensitive member and image forming apparatus
  • Positively chargeable monolayer electrophotographic photosensitive member and image forming apparatus
  • Positively chargeable monolayer electrophotographic photosensitive member and image forming apparatus

Examples

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no. 1 approach

[0038] The positively charged single-layer electrophotographic photoreceptor of the first embodiment of the present invention relates to a single layer including at least a charge generating material, a hole transporting material, an electron transporting material, and a binder resin formed on a conductive substrate. A positively charged single-layer electrophotographic photoreceptor (hereinafter sometimes referred to as a "single-layer photoreceptor" or "photoreceptor") having a photosensitive layer of a structure. The hole transport material includes a triarylamine derivative represented by the aforementioned formula (1). The electron transport material includes one or more compounds selected from the group consisting of compounds represented by the aforementioned formulas (2) to (4).

[0039] like figure 1 As shown, the positively charged single-layer electrophotographic photoreceptor 10 according to the first embodiment includes a conductive substrate 12, and an electroco...

no. 2 approach

[0166] The second embodiment includes: an image carrier; a charging section for charging the surface of the image carrier; an exposure section for exposing the charged surface of the image carrier to form an electrostatic latent image on the surface of the image carrier a developing section for developing the electrostatic latent image into a toner image; and a transfer section for transferring the toner image from the image bearing body to the transferred body. The second embodiment relates to an image forming apparatus using the positively charged single-layer electrophotographic photoreceptor according to the first embodiment as an image carrier.

[0167] In addition, the image forming apparatus of the present invention is preferably a monochrome image forming apparatus or a tandem color image forming apparatus using multi-color toners as will be described later. More specifically, for example, a tandem color image forming apparatus using multi-color toners as described lat...

Embodiment

[0189] Hereinafter, the present invention will be described more specifically by way of examples. In addition, this invention is not limited to an Example.

[0190] In Examples and Comparative Examples, the following hole transport materials (HTM-1 to 11) and electron transport materials (ETM-1 to 8) were used.

[0191]

[0192]

[0193]

[0194]

[0195]

[0196] The reduction potentials and drift mobilities of ETM-1 to ETM-8 were measured by the following methods. Table 1 shows the drift mobilities and reduction potentials of ETM-1 to ETM-8.

[0197]

[0198] A bisphenol Z-type polycarbonate resin with a viscosity average molecular weight of 50,000 and an electron transport material of 30% by mass relative to the total mass of the sample were added to an organic solvent to dissolve the polycarbonate resin and the electron transport material to prepare a coating liquid . The obtained coating solution was coated on a substrate made of aluminum, and heat-treat...

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Abstract

A positively chargeable monolayer electrophotographic photosensitive member and an image forming apparatus are provided. The positively chargeable monolayer electrophotographic photosensitive member includes a hole transport material containing a triarylamine derivative represented by a formula (1) below and an electron transport material containing a compound selected from the group consisting of quinone compounds having a predetermined structure. The positively chargeable monolayer electrophotographic photosensitive member free of image storage is provided. In addition, by providing the positively chargeable monolayer electrophotographic photosensitive member as an image carrier, the image forming apparatus can provide good images.

Description

technical field [0001] The present invention relates to a positively charged single-layer electrophotographic photoreceptor and an image forming apparatus including the positively charged single-layer electrophotographic photoreceptor. Background technique [0002] As an electrophotographic photoreceptor included in an electrophotographic image forming device, there are inorganic photoreceptors having a photosensitive layer composed of inorganic materials such as selenium and amorphous silicon; An organic photoreceptor with a photosensitive layer composed of an organic material such as a transport material. Furthermore, among these photoreceptors, organic photoreceptors are widely used because they are easier to manufacture than inorganic photoreceptors, can select a material for a photosensitive layer from a wide range of materials, and have a high degree of freedom in design. [0003] Such an organic photoreceptor includes a single-layer organic photoreceptor including a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/06G03G15/00
CPCG03G5/0679G03G5/047G03G5/0614G03G5/0672G03G5/0674G03G5/0609G03G5/061473G03G5/04G03G5/05G03G15/06
Inventor 清水智文宫本荣一鹤见裕树
Owner KYOCERA DOCUMENT SOLUTIONS INC
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