Rubber composition, paper feed roller, and image forming device

A rubber composition and rubber technology, which are applied in the direction of electric recording process applying charge pattern, equipment and object supply, etc. problem, to achieve the effect of small permanent elongation and excellent wear resistance
CN104072882BActive Publication Date: 2017-12-19SUMITOMO RUBBER IND LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUMITOMO RUBBER IND LTD
Publication Date
2017-12-19

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Abstract

A rubber composition contains a higher ethylene content EPDM and a lower ethylene content EPDM as a rubber component. The proportion of the higher ethylene content EPDM is 30 to 80 mass % based on the overall amount of the rubber component. The rubber composition is less susceptible to reduction in friction coefficient μ and has a proper hardness, a smaller permanent elongation and an excellent abrasion resistance after crosslinking. Therefore, the rubber composition is suitable for a sheet conveying roller and an image forming apparatus incorporating the sheet conveying roller.
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Description

technical field

[0001] The present invention relates to a rubber composition suitable for forming a paper feed roller for paper feeding in an image forming apparatus such as an electrostatic copier, a paper feed roller formed using the rubber composition, and an image forming apparatus equipped with the paper feed roller . Background technique

[0002] For example, a paper feed mechanism in an image forming apparatus such as an electrostatic copier, a laser printer, a plain paper facsimile machine, and a multifunction machine of these is equipped with a paper feed roller.

[0003] Examples of paper feed rollers include paper feed rollers, conveyance rollers, platen rollers, and discharge rollers that rotate while contacting paper (including plastic films, etc., hereinafter the same) to convey paper by friction.

[0004] As the paper feed roller, materials made of various rubbers such as natural rubber (NR), polyurethane rubber, ethylene propylene diene rubber (EPDM), polyno...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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