Fuji Xerox Co., Ltd.

Naoki Honma

Kunihiro Maie

Kouji Tsutsumi

Teruo Kaneko

Yukio Suzuki

Two temperature areas are set at a higher temperature side and at a lower temperature side of target temperature respectively. The power stage of the temperature areas at the higher temperature side is set to &minus;1 and the power stage of the temperature areas at the lower temperature side is set to &plus;1. Thus, a current value is varied little and generation of flicker can be reduced. Further, A temperature can be always converged into the target temperature. When a temperature is in a temperature area near to the target temperature, the power stage is maintained except for a case in which a temperature has passed through a temperature area other than this near temperature area and the target temperature area and enters this near temperature area for the first time. Thus, an amplitude of power can be suppressed.

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Iwatsuki, Japan

Naoki Honma