Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1991-10-16
1994-01-11
Paschall, Mark H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219501, 219508, 219494, 219216, 323369, H05B 102
Patent
active
052783944
ABSTRACT:
A fixing temperature controller comprising a heater for heating a fixing roller, a measuring circuit for detecting the fixing temperature of the fixing roller to produce detected temperature data, a first register for storing reference data for designating a fixing temperature for the fixing roller, a control circuit for comparing the reference data with the detected temperature data from the measuring circuit, and selectively activating the heater based on the comparison result. Particularly, the controller further comprises a second register for storing second reference data lower than the first reference data, and a selector for selecting one of the first and second reference data. The selector selects the first reference data and the control circuit activates the heater when it is detected that the detected temperature data<the reference data, and the selector selects the second reference data and the control circuit deactivates the heater when it is detected that the detected temperature.gtoreq.the reference data.
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Paschall Mark H.
Tokyo Electric Co. Ltd.
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