Abstract: An oil application roller has a core shaft and an oil retention/supply layer formed to cover the outer peripheral surface of the core shaft. The oil retention/supply layer includes a porous elastic material which exhibits no substantial swelling against an offset-preventing oil used, and is impregnated with a mixture containing an offset-preventing oil and a curable oil-retention material. The curable oil-retention material is cured.
Abstract: Disclosed is an oil applying roller provided in contact with the surface of a fixing roller of an electrophotographic copying apparatus. The oil applying roller comprises a core member, an oil retaining layer and a surface layer. The surface layer has less oil retaining ability than that of the oil retaining layer. Thus the oil applying roller can supply a small amount of oil to the fixing roller stably.
Abstract: An offset preventive diffusion roller subsidiary to a fixing roller for electronic copying machines has an oil absorbing layer composed of two kinds of layers. One of the layers is of plural oil diffusing layers for diffusing oil in the axial direction of the roller core. The other layer is of plural oil retaining layers composed of a soft and porous material for retaining oil therein.
Type:
Grant
Filed:
September 14, 1982
Date of Patent:
July 23, 1985
Assignees:
Minolta Camera K.K., Nitto Kogyo K.K., Hodaka Kogyo K.K.
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