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Preparation method for large-format organic photoconductive drum and organic photoconductive drum prepared with preparation method

An organic photoconductive drum and large-format technology, applied in optics, electrical recording, instruments, etc., can solve the problems of high manufacturing cost, large volume of dip coating tank, and difficulty in controlling the uniformity of material liquid circulation in the tank. The effect of less investment and simple process control

Inactive Publication Date: 2015-07-01
天津复印技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the long length of the large-format organic photoconductive drum, there are the following problems in the preparation by the dip coating method: ① Due to the high precision requirements, the processing and design of the dip coating equipment is difficult and the manufacturing cost is expensive
②Due to the deep dipping tank required, it is difficult to control the uniformity of the material liquid circulation in the tank
③The dip coating process is difficult to control, and the thickness and uniformity of the film layer are not easy to guarantee
④Due to the large volume of the dip coating tank and the large amount of liquid required, it is not suitable for multi-variety and small-batch production

Method used

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  • Preparation method for large-format organic photoconductive drum and organic photoconductive drum prepared with preparation method

Examples

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preparation example Construction

[0015] The preparation method of the large-format organic photoconductive drum of the present invention adopts a low-pressure atomization film-forming method, comprising the following steps:

[0016] ① Spray the pre-coating paint on the large-format organic photoconductor drum base. The preparation method of the pre-coating paint is: dissolve nylon resin and solvent at a mass ratio of 1:25-50;

[0017] ② After the pre-coating is fully dried, spray the charge generating coating. The preparation process of the charge generating coating is: mix Y-type phthalocyanine titanium oxide, polyvinyl butyral resin, and solvent by 1:(0.5-1.5):(200- The mass ratio of 300) is uniformly dispersed by ball milling;

[0018] ③ After the charge generation layer is fully dried, spray the charge transport material. The preparation method of the charge transport material: dissolve styryl triphenylamine, polycarbonate resin, and solvent at a mass ratio of 1:(0.8-1.3):(30-50) to prepare made.

[001...

Embodiment 1

[0021] Example 1: ① Preparation and spraying of pre-coating paint: Dissolve 25g of nylon resin GM-8000 in a mixed solvent of 400ml of n-butanol and 600ml of methanol to make a spraying liquid, and spray on the drum base to form a pre-coating. The organic photoconductor drum was baked in a drying oven at 100° C. for 10 minutes. ② Preparation and spraying of charge generating layer paint: Disperse 5g of charge generating material Y-TiOPc, 5g of polyvinyl butyral resin, 100ml of cyclohexanone, and 1500ml of methyl ethyl ketone into a uniform spraying liquid by ball milling, and spray on the drum base A charge generating layer is formed. The organic photoconductor drum was baked in a drying oven at 100° C. for 10 minutes. ③Charge transport layer paint preparation and spraying: 20g of styryl triphenylamine, 20g of polycarbonate resin PCZ-300, 100ml of cyclohexanone, and 900ml of toluene were prepared as a spraying liquid, and sprayed on the drum base to form a charge transport lay...

Embodiment 2

[0023] Embodiment 2: Except that during spraying, the drum base rotating speed is set at 300 rpm, and the reciprocating speed of the spray gun is set at 20mm / sec, all the other formulas and steps are the same as in Example 1.

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Abstract

The invention discloses a preparation method for a large-format organic photoconductive drum and the organic photoconductive drum prepared with the preparation method. The method adopts a way for forming a film by atomizing at low pressure, and comprises the following steps of (1) spraying dope of a pre-coating layer on a base of the large-format organic photoconductive drum, wherein the dope of the pre-coating layer is formed by dissolving nylon resin and solvent according to a mass rate of 1:25-50; (2) after the pre-coating layer is fully dried, spraying charge generating dope, wherein the charge generating dope is formed by uniformly dispersing Y-type titanyl phthalocyanine, polyvinyl butyral resin and solvent through a ball mill according to a mass rate of 1:(0.5-1.5):(200-300); (3) after a charge generating layer is fully dried, spraying charge transfer material, wherein the charge transfer material is formed by dissolving styryl triphenylamine, polycarbonate resin and solvent according to a mass rate of 1:(0.8-1.3):(30-50). According to the invention, shortcomings of current dip-coating methods are overcome, equipment input is little, and process control is simple, so that the preparation method is suitably used for preparing the large-format organic photoconductive drum.

Description

technical field [0001] The invention relates to an organic photoconductive drum for electrostatic imaging equipment, in particular to a method for preparing a large-format organic photoconductive drum and the prepared organic photoconductive drum. Background technique [0002] The organic photoconductive drum is formed by coating an organic photoconductive material layer on a conductive aluminum substrate, and is an essential core component of electrostatic imaging equipment (laser printers, digital copiers and multi-function machines, etc.). Its working principle is: first charge the surface of the organic photoconductive drum with high voltage, because the characteristics of the photoconductor are insulators in the dark, the surface of the film layer has a certain potential, and then the digital signal that needs to be printed / copied is passed through the LED or semiconductor laser. Expose and scan the charged organic photoconductive drum, the illuminated part becomes a co...

Claims

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Application Information

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IPC IPC(8): G03G5/04
Inventor 赵晓东李兴民万长江
Owner 天津复印技术有限公司
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