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Preparation method of large-format positively charged organic photoconductive drum and prepared organic photoconductive drum

An organic photoconductive drum, large-format technology, which is applied in the equipment of the electric recording process applying the charge pattern, the electric recording process applying the electric charge pattern, optics, etc. The thickness and uniformity are not easy to guarantee, and the processing design of the dip coating equipment is difficult to achieve the effect of easy preparation and purification process, simple structure and good adhesion

Active Publication Date: 2018-10-19
天津复印技术研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Preparation method of large-format positively charged organic photoconductive drum and prepared organic photoconductive drum
  • Preparation method of large-format positively charged organic photoconductive drum and prepared organic photoconductive drum

Examples

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preparation example Construction

[0017] The preparation method of the large-format positively charged organic photoconductive drum of the present invention adopts a low-pressure atomization film-forming method, comprising the following steps:

[0018] ① Spray the pre-coating paint on the base of the large-format organic photoconductive drum. The preparation method of the pre-coating paint is: dissolve the vinyl acetate resin and solvent at a mass ratio of 1:50-100;

[0019] ② After the pre-coating layer is fully dried, spray photosensitive paint. The preparation process of photosensitive paint is: Y-type phthalocyanine titanium oxide and solvent are uniformly dispersed by ball milling according to the mass ratio of 1:30-40, and then prepared into a generating material solution; 3 ,3′-Dimethyl-5,5′-di-tert-butyldiphenoquinone, styryltriphenylamine, polycarbonate resin, and solvent are dissolved in a mass ratio of 1:2-3:4-5:120-180 Prepare a transmission material solution; mix the generating material solution a...

Embodiment 1

[0022] Example 1: ① Preparation and spraying of pre-coating paint: Dissolve 10 g of vinyl acetate resin SB-A in 800 ml of methyl ethyl ketone solvent to make a pre-coating solution, and spray it 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 of the generating material solution: Mix 1 g of Y-type titanium phthalocyanine and 40 ml of cyclohexanone, ball mill for 24 hours to disperse evenly, and prepare the generating material liquid for later use. ③Preparation of transmission material solution: 10g of 3,3′-dimethyl-5,5′-di-tert-butyldiphenoquinone, 20g of styryl triphenylamine, 40g of polycarbonate resin and 1800ml of toluene were fully dissolved and mixed for preparation ④ Preparation of photosensitive coating solution: mix 20ml of generating material solution and 500ml of photosensitive coating solution, ball mill for 12 hours and disperse evenly to prepare photosensitive coating solut...

Embodiment 2

[0024] Embodiment 2: Except that styryl triphenylamine is changed from 20 g to 30 g in the preparation of the transmission material solution in step ③, everything else is the same as that of Embodiment 1.

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Abstract

The invention discloses a preparation method for a large-format electropositive organic photoconductive drum and the organic photoconductive drum prepared with the method. A low-pressure atomization film-forming method is adopted; a transmission material adopts 3,3'-dimethyl-5,5'-di-tert-butyldiphenoquinone and styryl triphenylamine which are used in a matched way. The method comprises the following steps: (1) spraying a precoating on a drum base of a large-format organic photoconductive drum; (2) fully drying the precoating and spraying a photosensitive coating, wherein a preparation process for the photosensitive coating comprises the following steps: uniformly dispersing Y-type titanium oxide phthalocyanine and a solvent at a mass ratio of 1:(30-40) through ball milling to prepare a generation material solution; dissolving 3,3'-dimethyl-5,5'-di-tert-butyldiphenoquinone, styryl triphenylamine, polycarbonate resin and the solvent at a mass ratio of 1:(2-3):(3-5):(120-180) to prepare a transmission material solution; mixing the generation material solution with the transmission material solution at a volume ratio of 1:(25-40); (3) drying. A low-pressure atomization spraying technology is adopted in a film-forming method, so that the performance uniformity is guaranteed.

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 positively charged 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 illuminate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G5/04G03G15/00
Inventor 赵晓东万长江苏来泉
Owner 天津复印技术研究所有限公司
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