HEATING DEVICE, FIXING DEVICE USING IT, AND IMAGE FORMATION DEVICE USING THE FIXING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a capacitor as an auxiliary power source for a fixing device of an image formation device or the like; and to reduce delay in response even when a heater having a large filament diameter and low heat generation efficiency is used.

SOLUTION: A heating part 2 is provided with a main heating element 2a and an auxiliary heating element 2b, and power is fed to the main heating element 2a from a main power supply device 3 and to the auxiliary heating element 2b from an auxiliary power supply device 4 using the capacitor C. Power is fed to the auxiliary heating element 2b from the capacitor C to accelerate temperature rise of a fixing roller 40. When operation such as image formation is not being executed in a waiting time, the auxiliary heating element 2b is intermittently ignited by discharge from the capacitor C to always warm up and preheat a filament, a heater tube and the like of the auxiliary heating element 2b.

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