Paper feed roller
AssigneeSumitomo Riko Company Limited
InventorsKuniaki Doi, Atsuhiro Kawano, Yuma Yoshida
Life of this patent
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Abstract
A paper feed roller 1 is used in a paper feeding unit in an electrophotographic image forming device. The paper feed roller 1 includes a non-foamed elastic body 2 having an embossed surface 21 including crest-like parts 211 and valley-like parts 212. The embossed surface 21 has many dimple parts 213 recessed inward on bottom surfaces of the valley-like parts 212 or on the bottom surfaces and lateral surfaces of the valley-like parts 212, and does not have the many dimple parts 213 on top parts of the crest-like parts 211. A diameter of the dimple parts 213 can be set to be 1 to 100 μm and an arithmetic average height Ra of the embossed surface 21to be 3 to 50 μm.
Claims16
A paper feed roller for use in a paper feeding unit in an electrophotographic image forming device, the paper feed roller comprising:
- a non-foamed elastic body having an embossed surface including crest portions and valley portions,
- wherein the embossed surface has a plurality of dimple parts recessed inward on a bottom surface of the valley portion or on the bottom surface and a lateral surface of the valley portion, and does not have the plurality of dimple parts on a top part of the crest portion, and
- top ends of the crest portions come into contact with paper, the valley portions are portions for allowing paper powder to escape, and the valley portions are interposed by the crest portions.
Dependencies are inferred from the claim text.