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Paper feed roller

一种给纸辊、外层的技术，应用在给纸辊领域，能够解决渗出、没有考虑阻止橡胶组合物物质迁移等问题，达到长使用寿命、减少抖动现象、高耐磨性的效果

Active Publication Date: 2011-06-22
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when manufacturing the paper feed roller, no consideration was taken to prevent the substances in the rubber composition from migrating between the inner and outer layers, resulting in bleeding.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0088] Embodiment 1~5 and comparative example 2~3

[0089] (i) Forming the inner layer

[0090] Put the rubber composition specified in Table 2 into a prefabricated mold, and vulcanize under pressure at 160° C. for 30 minutes. Thus, a cylinder with an inner diameter of φ9mm, an outer diameter of φ15mm and a length of 60mm is obtained. Finally, the cylinder is cut into rubber rollers with a length of 10mm.

[0091] (ii) forming the outer layer

[0092] Put the rubber composition specified in Table 2 into a prefabricated mold, and vulcanize under pressure at 160° C. for 20 minutes. Thus, a cylinder with an inner diameter of φ14mm, an outer diameter of φ21mm and a length of 60mm is obtained. Next, the prepared cylinder was ground with a cylindrical grinder until the outer diameter became φ20 mm. Finally, the cylinder is cut into rubber rollers with a length of 10 mm.

[0093] (iii) Forming a paper feed roller with a double-layer structure

[0094] Insert the shaft into t...

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Abstract

A paper feed roller having an inner layer and an outer layer both consisting of rubber, with a peripheral surface of the inner layer and an inner peripheral surface of the outer layer in close contact without forming a gap therebetween. A rubber component of the inner layer consists of butyl rubber. A rubber component of the outer layer consists of EPDM, silicone rubber or urethane rubber. The JIS-A hardness of the inner layer is set to not more than 10 degrees, and the JIS-A hardness of the outer layer is set to not less than 25 nor more than 60 degrees.

Description

[0001] This non-provisional application claims priority 35 U.S.C. §119(a) to Japanese Patent Application No(s).2005-330074, filed November 15, 2005, the entire contents of which are incorporated herein by reference. technical field [0002] The present invention relates to a paper feeding roller used in paper feeding equipment of copiers, printers, facsimile machines, automatic teller machines (ATMs) and the like. More specifically, in the paper feed roller of the present invention, the annular elastic member (rubber roller) installed on the outer surface of a shaft has a double-layer structure, including two parts, the inner layer and the outer layer, to reduce the decrease in the coefficient of friction and the occurrence of jitter phenomenon. Background technique [0003] Various types of paper feed rollers are widely used in paper feed equipment such as electrostatic copiers, various printers, fax machines, and automatic teller machines. The paper feed roller refers to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B25/00B65H3/06B32B7/04B65H27/00
CPCG03G2215/004G03G2215/00396G03G15/6511
Inventor 伊藤靖时西森浩一峯章弘
Owner SUMITOMO RUBBER IND LTD
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