| 摘要 |
PURPOSE:To expand the service life of a fixing roller by setting the surface temperature of a fluoroplastic layer to a value slightly higher than the melting point of the fluoroplastic and rebaking the ground fluoroplastic layer. CONSTITUTION:In the roller constituted by polishing the surface of the fluoroplastic layer 4 formed on a silicone rubber elastic layer 2 coating a core bar 1 by baking the polished fluoroplastic layer 4 is rebaked. Provided that the rebaking should be executed within a short period while keeping the surface temperature of the roller at a level slightly higher than the melting point of the fluoroplastic. Althrough grinding for correcting the rugged surface of the layer 4 is practically executed by rotating the roller and fine flaws 5 may be generated at the time of polishing, these flaws 5 are completely melted by executing rebaking at a temperature slightly higher than the melting point of the fluoroplastic and restored to the uniforms state of the layer 4 as a whole. Consequently, the fixing roller having extremely long service life is obtained.
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