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Manufacturing method of semi-conductive roller

A technology of semi-conductivity and manufacturing method, which is applied in the fields of electric recording process using charge pattern, equipment for electric recording process using charge pattern, and electric recording technique, and can solve problems such as uneven density and poor image density

Active Publication Date: 2012-05-16
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, since the toner of the amount restricted by the restriction blade cannot be attached to the above-mentioned outer peripheral surface, even if the above-mentioned restriction blade is passed, a continuous thin layer of toner with uniform thickness cannot be formed on the above-mentioned outer peripheral surface. As a result, image defects such as so-called image density defects and density unevenness occur.

Method used

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  • Manufacturing method of semi-conductive roller
  • Manufacturing method of semi-conductive roller
  • Manufacturing method of semi-conductive roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0184] As the base polymer, 50 parts by mass of epichlorohydrin rubber [GECO, EPICHLOMER (registered trademark) CG102 manufactured by DAISO Co., Ltd., EO / EP / AGE=56 / 40 / 4 (molar ratio)] and chloroprene 50 parts by mass of vinyl rubber [CR, Shoprene (registered trademark) WRT manufactured by Showa Denko Co., Ltd.].

[0185] While masticating 100 parts by mass of the above base polymer with a Banbury mixer, 18.3 parts by mass of carbon black [Asahi #15 manufactured by Asahi Carbon Co., Ltd.] with an average primary particle diameter of 122 nm and the following Each component shown in Table 1 was further kneaded to prepare a rubber composition.

[0186] 【Table 1】

[0187] Table 1

[0188] Element

parts by mass

sulfur vulcanizing agent

1.50

accelerator DM

1.50

Accelerator TS

0.50

Thiourea vulcanizing agent

1.00

accelerator DT

0.85

Zinc oxide 2 types

5

acid absorber

3

...

Embodiment 2、3

[0203]

[0204] With respect to 100 parts by mass of the total amount of the base polymer, the compounding ratio of carbon black having an average primary particle diameter of 122 nm was 6.0 parts by mass (Comparative Example 1), 6.6 parts by mass (Example 2), and 30.0 parts by mass (Example 2). 3) and 32.0 parts by mass (comparative example 2), except that, it carried out similarly to Example 1, the rubber composition was prepared, and the semiconductive roller was manufactured.

Embodiment 4

[0206] As carbon black, the same amount of carbon black [Asahi #51 manufactured by Asahi Carbon Co., Ltd.] with an average primary particle diameter of 91 nm was blended, and a rubber composition was prepared in the same manner as in Example 1, thereby producing semi-conductive rollers.

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Abstract

The present invention provides a manufacturing method of a semi-conductive roller, which is used for manufacturing the semi-conductive roller that has the following characteristics of the roller body: Shore A scleroscope hardness less than 60, permanent compression deformation less than 10%, surface roughness of an outer peripheral surface within 3.0 mu m to 10.0 mu m. No deflection is generated when the roller body is ground and the semi-conductive roller can be manufactured through high productivity. The roller body (2) is formed by semi-conductive rubber composition which comprises a basic polymer and carbon black. The content of the carbon black is 6.6-30 parts by weight relative to 100 parts by weight of basic polymer, and furthermore the average one-time diameter is 80nm-200nm. The outer peripheral surface (5) of the roller body (2) is ground through dry type transverse feeding grinding of a grinding tool (7) that extends all over the whole width of the outer peripheral surface (5).

Description

technical field [0001] The present invention relates to a semiconductive material that can be favorably used as a toner transport roller such as a developing roller in an image forming apparatus using the electrostatic copying method such as a laser printer, an electrostatic copier, a plain paper facsimile apparatus, or a multifunction machine thereof. Roll manufacturing method. Background technique [0002] The various image forming apparatuses described above using the electrophotographic method have undergone various improvements in order to meet demands for so-called higher speed, higher image quality, color enhancement, and miniaturization. [0003] Key among these improvements are toners. That is, in order to satisfy the various requirements described above, miniaturization of the toner, uniformity of the particle diameter of the toner, and sphericalization of the shape of the toner are necessary. [0004] For the miniaturization of the toner, a fine toner having an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08
Inventor 丸井隆司水本善久田岛启
Owner SUMITOMO RUBBER IND LTD
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