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Developing roll of laser printer and surface treatment method thereof

A technology of laser printers and developing rollers, applied in optics, coatings, instruments, etc., can solve problems such as printing bottom dust that cannot be completely solved, and achieve the effects of improving electrical performance fluctuations, reducing cleaning work, and improving roughness

Inactive Publication Date: 2012-03-21
PRINT RITE UNICORN IMAGE PROD CO LTD OF ZHUHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a laser printer developing roller with no printing dust, simple structure, and no dust absorption, aiming at the defects that the printing dust cannot be completely solved by using UV irradiation treatment in the prior art

Method used

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  • Developing roll of laser printer and surface treatment method thereof
  • Developing roll of laser printer and surface treatment method thereof
  • Developing roll of laser printer and surface treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, as figure 1 As shown, a developing roller for a laser printer comprises an iron core 1, an elastic body 2 wrapped around the iron core 1, and the elastic body 2 is coated with a conductive coating 3, the thickness of the conductive coating is 2 μm, and the rough The degree is 1.1μ. The iron core 1 is a cylinder, and the elastic body 2 is also a cylinder. The iron core 1 and the elastic body 2 are bonded together by an adhesive, and when the iron core 1 rotates, the elastic body 2 is driven to rotate.

[0029] The conductive coating 3 is made of the following raw materials in parts by weight: silica gel substrate coating (a mixture containing α, ω-divinyl polydimethylsiloxane with a vinyl mass fraction of 0.22%) 100. Platinum catalyst A (platinum-vinylsiloxane complex) 0.5, platinum catalyst B (blocked methylhydrogenpolysiloxane) 1.2, conductive carbon black 8.5. Among them, the silicone substrate coating is a finished product on the market. You can choos...

Embodiment 2

[0034] Embodiment 2, the structure of the developing roller is the same as that of Embodiment 1, and will not be repeated here. The thickness of the conductive coating is 10 μm. The roughness Ra of the conductive coating is 0.75μ. The conductive coating is made of the following raw materials in parts by weight: silica gel substrate coating (a mixture containing α, ω-divinyl polydimethylsiloxane with a vinyl mass fraction of 0.36%) 100 , Platinum catalyst A (platinum-vinylsiloxane complex) 0.8, platinum catalyst B (blocked methyl hydrogen polysiloxane) 1.5, conductive carbon black 9 for silica gel substrate coating. Among them, the silicone substrate coating is a finished product on the market, and the silicone coating produced by Shenzhen Chongxin Technology can be used. Platinum catalyst A and platinum catalyst B are also finished products on the market, and 25A and 25B produced by Shin-Etsu Chemical can be used.

[0035] A method for treating the surface of a developing rol...

Embodiment 3

[0039] Embodiment 3, the structure of the developing roller is the same as that of Embodiment 1, and will not be repeated here. The thickness of the conductive coating is 15 μm. The roughness Ra of the conductive coating is 0.62μ. The conductive coating is made of the following raw materials in parts by weight: silica gel substrate coating (a mixture of α, ω-divinyl polydimethylsiloxane with a vinyl mass fraction of 0.60%) 100, silica gel Platinum Catalyst A (platinum-vinylsiloxane complex) 1.0, Platinum Catalyst B (blocked methylhydrogenpolysiloxane) 2.0, Conductive Carbon Black 10 for substrate coating. Wherein, the silica gel substrate coating is a ready-made product on the market, and the selection is the same as in Example 2. Platinum catalyst A and platinum catalyst B are also off-the-shelf finished products in the market, and the selection is the same as in Example 2.

[0040] A method for treating the surface of a developing roller of a laser printer, comprising the f...

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Abstract

The invention discloses a developing roll of a laser printer and a surface treatment method thereof. The developing roll comprises an iron core and an elastomer wrapped outside the iron core, wherein, a conductive coating is coated outside the elastomer, and the roughness Ra of the surface of the conductive coating is 0.3-1.5mu. The surface treatment method of the developing roll comprises the following steps: A. cleaning the surface of the elastomer of the developing roll; B. coating a layer of the conductive coating on the surface of the elastomer of the developing roll treated in step A; and C. drying or naturally air-drying the developing roll coated with the conductive coating in step B. The developing roll of the laser printer has the advantages of no print bottom ash and adsorbed dust and simple structure; and by adopting the surface treatment method of the developing roll of the laser printer, the problems of the developing roll such as print bottom ash, white and black spots or other undesirable print effects can be fully solved.

Description

technical field [0001] The invention relates to a printer component, in particular to a laser printer developing roller and a surface treatment method for the developing roller. Background technique [0002] Laser printers are currently one of the most widely used external computer output devices, which use the physical and chemical principles of light, electricity, and heat to output text or images through interaction. The basic process can be divided into seven steps: charging, exposure, development, transfer, fixing, cleaning, and power elimination. First, the surface of the photosensitive drum is uniformly charged by the charging roller. The laser scanner emits modulated laser light containing image information to the photosensitive drum, forming an electrostatic latent image corresponding to the image to be copied on the surface of the photosensitive drum. At the same time, the developing roller rotates, and the carbon powder between the developing roller and the powd...

Claims

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Application Information

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IPC IPC(8): G03G15/08C09D183/07C09D133/04C09D5/24C09D7/12
Inventor 周巍峙
Owner PRINT RITE UNICORN IMAGE PROD CO LTD OF ZHUHAI
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