Organic photoconductive material, electronic photographic photoreceptor using the same material and image forming apparatus

A conductive material and electrophotography technology, applied in the electrical recording process using the charge pattern, the equipment and optics of the electrical recording process using the charge pattern, can solve various characteristics of the photoreceptor, the performance of the photoreceptor is not ideal, Reduce sensitivity and other issues, achieve good photoresponsiveness, excellent responsiveness, and full responsiveness

Inactive Publication Date: 2004-04-07
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, the performance of the photoreceptor using an enamine compound described in JP-A No. 2-51162, JP-A 6-43674 or JP-A 10-69107 is not ideal.
[0019] In addition, the photoreceptor described in JP-A No. 7-134430 contains polysilane, and the light exposure is weak, and there is a problem that various characteristics of the photoreceptor are degraded due to exposure during maintenance and the like.
[0020] In addition, as the characteristics of the photoreceptor, it is required that the sensitivity does not decrease when used in a low-temperature environment, and that the characteristics change little and have high reliability under various environments. However, no charge-transporting material that can realize these characteristics has been obtained so far.

Method used

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  • Organic photoconductive material, electronic photographic photoreceptor using the same material and image forming apparatus
  • Organic photoconductive material, electronic photographic photoreceptor using the same material and image forming apparatus
  • Organic photoconductive material, electronic photographic photoreceptor using the same material and image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0237] Preparation Example 1 Preparation of Compound No.1

preparation example 1-1

[0238] Preparation Example 1-1 Preparation of enamine intermediate

[0239] To 100 ml of toluene, 23.3 g (1.0 equivalents) of N-(p-tolyl)-α-naphthylamine represented by the following structural formula (8) and 20.6 g (1.05 equivalents) of diphenylacetaldehyde represented by the following structural formula (9) were added ) and 0.23 g (0.01 equivalent) of DL-10-camphorsulfonic acid, heated, the by-product water and toluene were azeotroped, discharged from the system, and the reaction was carried out for 6 hours. After the reaction was terminated, the reaction solution was concentrated to about 1 / 10, and slowly added dropwise to 100 ml of vigorously stirred hexane to generate crystals. The resulting crystals were filtered off and washed with cold ethanol to obtain 36.2 g of a pale yellow powdery compound.

[0240]

[0241] The obtained compound was analyzed by Liquid Chromatography-Mass Spectrometry (LC-MS for short), as a result, a peak at 412.5 was observed, corresponding ...

preparation example 1-2

[0243] As described above, N-(p-tolyl)-α-naphthylamine represented by the above-mentioned structural formula (8) as a secondary amine compound and diphenylacetaldehyde represented by the above-mentioned structural formula (9) as an aldehyde compound are dehydrated and condensed After the reaction, the enamine intermediate represented by the above-mentioned structural formula (10) can be obtained. Preparation example 1-2 Preparation of enamine-aldehyde intermediate

[0244] To 100 ml of anhydrous N,N-dimethylformamide (DMF), under ice-cooling, 9.2 g (1.2 equivalents) of phosphorus oxychloride was slowly added, and the mixture was stirred for about 30 minutes to prepare Vilsmeier reagent. To this solution, 20.6 g (1.0 equivalent) of the enamine intermediate represented by the above-mentioned structural formula (10) prepared in Preparation Example 1-1 was slowly added under ice-cooling. Then, it heated slowly, and raised the reaction temperature to 80 degreeC, and it stirred for...

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Abstract

The invention is to provide an organic photoconductive material capable of realizing electrophotographic photoreceptors of high reliability that have high charge potential, high sensitivity, good responsiveness to light and good durability, of which the characteristics do not lower even when they are driven at low temperatures or at high speed and even when they are exposed to light, and to provide an electrophotographic photoreceptor that comprises the material and an image-forming apparatus. An organic photoconductive material of the following general formula (1), for example, an enamine compound of the following structural formula (1-1) is produced. Using the organic photoconductive material for the charge-transporting substance (13) to be in a photosensitive layer (14) on a conductive support (11), an electrophotographic photoreceptor (1) is fabricated, and this is mounted on an image-forming apparatus.

Description

technical field [0001] The present invention relates to an organic photoconductive material, an electrophotographic photoreceptor and an image-forming apparatus using the material. Background technique [0002] In recent years, organic photoconductive materials have been extensively researched and developed, not only in electrophotographic photoreceptors (hereinafter referred to as photoreceptors), but also in electrostatic recording devices, sensor materials or organic electroluminescence. (ElectroLuminescent, referred to as EL) components and so on. In addition, electrophotographic photoreceptors containing organic photoconductive materials are not limited to the field of copiers, but are also used in the fields of printing plates, slides, and microfilms where photographic technology is currently used. It is also used in high-speed printers that use lasers, light-emitting diodes (Light Emitting Diode, LED for short) or Cathode Ray Tube (CRT for short) as light sources. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/04G03G5/047G03G5/06G03G5/14
CPCG03G5/0672G03G5/04G03G5/0616G03G5/0696G03G5/0666G03G5/047
Inventor 小幡孝嗣近藤晃弘石田一也
Owner SHARP KK
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