Image fixing device with phase controlled heaters
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United States of America Patent
Stats
-
Jan 24, 2006
Grant Date -
May 6, 2004
app pub date -
Aug 20, 2003
filing date -
Dec 14, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An image fixing apparatus has a first rotatable member heated by a first heater and a first temperature detecting element for detecting its temperature; a first controller for controlling electric supply to the first heater to maintain a detected temperature of the first temperature detecting element at a first target temperature; a second rotatable member heated by a second heater and forming a fixing nip with the first rotatable member; a second temperature detecting element for detecting a temperature of the second rotatable member, a second controller for controlling electric supply to the second heater to maintain the detected temperature of the second temperature detecting element at a second target temperature; and a phase controller for controlling electric energy supply phase so as to avoid overlapping of a phase of an electric power supply to the first heater and a phase of an electric power supply to the second heater.
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