FIXING DEVICE AND IMAGE FORMING APPARATUS

摘要

A fixing device includes a flexible endless fixing member; a metal member; and a pressing member. "A" is equal to or less than "Bmax" and greater than "Bave" ("Bmax" = "A" > "Bave"), where "A" represents an amount of a clearance at the time of normal temperature between the fixing member and the metal member, "Bmax" represents a maximum amount of deformation generated in the metal member when heating is started by the heating member from a normal temperature state, and "Bave" represents an amount of stable deformation generated in the metal member when the temperature of the entire metal member becomes even.