FIXING MEMBER EVALUATION METHOD, FIXING BELT, AND THERMAL FIXING ROLLER

摘要

PROBLEM TO BE SOLVED: To provide an evaluation method by which whether the toner releasability, flexibility, and elasticity of a fixing belt are excellent or not can be evaluated easily. SOLUTION: The fixing belt 20 in which an elastic layer 22 and a releasing layer 23 are arranged in a laminate on a base material 21 is subjected to a universal hardness test in a depth of 1μm to 4μm from the surface of the releasing layer 23. If the universal harness HU in a depth of 1μm is HU≤30 [N/mm2] and the universal hardness HU in a depth of 4μm is HU≤12 [N/mm2], the fixing belt 20 is evaluated as an acceptable product. COPYRIGHT: (C)2004,JPO