Rubber composition, sheet conveying roller, and image forming apparatus
First Claim
1. A rubber composition for forming a sheet conveying roller, comprising a rubber component, and a peroxide crosslinking agent,wherein the rubber component consists of:
- a first portion of an ethylene propylene diene rubber having an ethylene content of not less than 62%; and
a second portion of an ethylene propylene diene rubber having an ethylene content of not greater than 55%,wherein the first portion of the ethylene propylene diene rubber is present in a proportion of not less than 30 mass % and not greater than 50 mass % based on an overall amount of the rubber component.
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Accused Products
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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Citations
6 Claims
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1. A rubber composition for forming a sheet conveying roller, comprising a rubber component, and a peroxide crosslinking agent,
wherein the rubber component consists of: -
a first portion of an ethylene propylene diene rubber having an ethylene content of not less than 62%; and a second portion of an ethylene propylene diene rubber having an ethylene content of not greater than 55%, wherein the first portion of the ethylene propylene diene rubber is present in a proportion of not less than 30 mass % and not greater than 50 mass % based on an overall amount of the rubber component. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification