Method and apparatus for monitoring and controlling heated fuser

Details Method and apparatus for monitoring and controlling heated fuser Method and apparatus for monitoring and controlling heated fuser

1981-08-24

1983-11-15

Paschall, M. H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219216, 219505, 355 14R, H05B 102

Patent

active

044158009

ABSTRACT:
Copier fuser roller temperature is monitored during the warm-up period by a series of decreasing temperature threshold levels. Each threshold level is monitored for a preselected time period and reduced for the next time period. The sampling continues until the fuser roller temperature sensed by a thermistor or the like exceeds the threshold level. At that point, the control logic for the copier is enabled for normal copying since the fuser roller temperature profile is then approaching at an adequate level for proper fusing of copy sheets. Fuser over-temperature, under-temperature and failure conditions are determinable.

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patent: 4324486 (1982-04-01), Nishikawa
patent: 4340807 (1982-07-01), Raskin et al.

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