FILM TUBULAR BODY FOR IMAGE FIXING DEVICE AND IMAGE FIXING DEVICE

PROBLEM TO BE SOLVED: To make it possible to prevent the slip of recording paper without interposing a lubricant between a film tubular body and an elastic body and to simplify a fixing device by disposing a low-friction sheet on the elastic body and providing the outside surface of the film tubular body with a release layer having the coefficient of friction larger than the coefficient of friction of the low-friction sheet. SOLUTION: A fixing roll 1 of a drive type of the image fixing device is constituted by providing the outer periphery of a metallic roll 12 into which a heater 11, such as a halogen lamp, is built, with a heat resistant elastic layer 13 consisting of silicone rubber, etc. An endless casting film, etc., are usable for the heat resistant film tubular body 2 circumscribing the fixing roll 1 and the surface thereof is provide with the release layer 21 having the coefficient of friction larger than the coefficient of friction of the low-friction sheet 33 on the elastic body 32. A pressing unit A is constituted by mounting the elastic body 32 on a supporting base 31 and putting the low-friction sheet 33, for example, glass cloth impregnated with a fluororesin on the elastic body 32 and bonding both ends of the low-friction sheet 33 to the supporting body 31.