| 摘要 |
PURPOSE:To obtain a fixing roller which is scarcely flawed, and also to give exactly the levelness of a contact surface with the fixing roller by providing a projection provided with a slender opening part through which a mold releasing agent passes in the lengthwise direction of a slender opening part of the bottom part of a tank, on a holding plate for fixing a porous film, and positioning this projection at the inside of the porous film. CONSTITUTION:A projection 8 is provided on a holding plate 5 in a shape running along the projecting part of a tetrafluoroethylene resin porous film 3, and tumbling and deformation of the projecting part are prevented. In this case, between the projection of the holding plate and tetrafluoroethylene resin porous film, a porous shape maintaining body 4 of a heat-resistant felt, etc. is placed in advance in order to improve conformability to a fixing roller and to contact softly the roller. Also, it is necessary to provide a slender opening part, for instance, a long groove in the lengthwise direction of the fixing roller, which does not cover up the shape maintaining body as a passage of a mold releasing agent, on the holding plate. |
