| 摘要 |
An electrophotographic fixing device having a heat roller covered with a layer of silicone rubber, and an oil applying assembly for coating the surface of the heat roller with an offset preventing agent, such assembly comprising a felt impregnated with the offset preventing agent, and a metallic roller in surface rubbing contact with the felt to prevent offset of a toner image formed on a sheet passing over the heat roller surface, the present fixing device having a surface of its metallic roller roughened and in contact with a doctor blade of a material having a lower hardness than the material of the metallic roller. The doctor blade is in pressing contact with the roughened surface at a location to the rear of the position of rubbing contact between the felt and the metallic roller relative to the direction of rotation of the metallic roller.
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