Image forming apparatus

一种图像、调色剂图像的技术，应用在图像形成装置领域，能够解决没能得到感光体、曝光敏感、感光体特性降低等问题，达到高速形成高品质和高分辨率图像、灵敏度和光响应性好、光响应性好的效果

Inactive Publication Date: 2005-08-03
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic photoreceptors have basic characteristics as photoreceptors to a certain extent, but there are problems such as difficulty in forming a photosensitive layer, poor plasticity, high manufacturing cost, etc.
However, the enamine compounds disclosed in JP-A-2-51162, JP-A-6-43674, or JP-A-10-69107 have insufficient charge transport capabilities, and even using such enamine compounds cannot achieve Photoreceptor with sufficient sensitivity and light responsiveness
In addition, although it is considered that the photoreceptor disclosed in JP-A No. 7-134430 contains polysilane and an enamine compound having a specific structure in the photosensitive layer, the photoreceptor using polysilane is sensitive to exposure, so it brings Decrease in various characteristics as a photoreceptor due to exposure to external light during maintenance, etc.
[0027] In addition, because electrophotographic devices are exposed to various environments, photoreceptors are required to have little change in characteristics caused by environmental changes such as temperature and humidity, and have good environmental stability. However, photoreceptors having the above-mentioned characteristics have not been obtained.

Method used

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Examples

Experimental program
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Embodiment

[0270] Hereinafter, the present invention will be described in more detail using examples, but the present invention is not limited to the content described below.

manufacture example 1

[0272] (Production Example 1) Production of Exemplary Compound No.1

[0273] (Production Example 1-1) Production of Enamine Intermediate

[0274] Add 23.3 g (1.0 mole equivalent) of N-(p-tolyl)-α-naphthylamine represented by the following structural formula (8) and 20.6 g of diphenylacetaldehyde represented by the following structural formula (9) to 100 mL of toluene (1.05 molar equivalent), 0.23 g (0.01 molar equivalent) of DL-10-camphorsulfonic acid, heated, and reacted for 6 hours while discharging the generated by-product water and toluene azeotropically to the outside of the system. After the reaction was completed, the reaction solution was concentrated to about 1 / 10 (1 / 10), and slowly dropped into 100 mL of vigorously stirred hexane to form crystals. The resulting crystals were filtered and washed with cold ethanol to obtain 36.2 g of a light yellow powdery compound.

[0275]

[0276] Utilize liquid chromatography-mass spectrometry (Liquid Chromatography-Mass Spect...

manufacture example 1-2

[0279] (Production Example 1-2) Production of Enamine-Aldehyde Intermediate

[0280] To 100 mL of anhydrous N,N-dimethylformamide (DMF), slowly add 9.2 g (1.2 molar equivalents) of phosphorus oxychloride under ice-cooling, and stir for about 30 minutes to prepare the Vilsmeier reagent. To this solution, 20.6 g (1.0 molar equivalent) of the enamine intermediate represented by the structural formula (10) obtained in Production Example 1-1 was gradually added under ice cooling. Thereafter, the reaction temperature was raised to 80°C by heating slowly, and stirred for 3 hours while maintaining heating at 80°C. After completion of the reaction, the reaction solution was left to cool, and slowly added to 800 mL of cold 4N aqueous sodium hydroxide solution to allow precipitation. The generated precipitate was filtered, washed sufficiently with water, and recrystallized from a mixed solvent of ethanol and ethyl acetate to obtain 20.4 g of a yellow powdery compound.

[0281] The obta...

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PUM

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Abstract

An image forming apparatus having excellent chargeability, sensitivity and light responsivity of an electrophotographic photoconductor and capable of forming images of high quality and high resolution at a high speed in various circumstances, is provided. An electrophotographic photoconductor having a photosensitive layer containing the enamine compound represented by the following general formula (1), for example, the enamine compound represented by the following structural formula (1-1) as a charge transportation substance is mounted to an image forming apparatus and the volume average particle size of the toner contained in a developer 50 housed in a developing device 33 is set to a size from 4 to 7 mu.

Description

technical field [0001] The present invention relates to an electrophotographic image forming apparatus such as a copying machine. Background technique [0002] An electrophotographic image forming apparatus (hereinafter referred to as an electrophotographic apparatus) that forms an image using an electrophotographic technique is often used as a copying machine, a printer, or a facsimile apparatus. In the electrophotographic apparatus, an image is formed by the following electrophotographic process. First, the photosensitive layer of the electrophotographic photoreceptor (hereinafter referred to as "photoreceptor") installed in the device is uniformly charged to a predetermined potential by a charging device such as a charging roller, and the exposure device is used to perform exposure in accordance with the image information to form static electricity. latent image. A developer is supplied to the formed electrostatic latent image, and a toner which is a component of the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/06G03G15/00G03G15/08
CPCG03G5/0672G03G2215/00957G03G5/0616G03G5/0605G03G5/0614G03G5/0609G03G5/0666G03G15/75G03G5/0618G03G5/0612G03G5/061473G03G5/06149
Inventor 藤井一郎小幡孝嗣角井干男
Owner SHARP KK
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