Predictive fusing system for use in electrophotographic printers

Details Predictive fusing system for use in electrophotographic printers Predictive fusing system for use in electrophotographic printers

1998-07-31

2000-01-25

Paschall, Mark

Electric heating

Heating devices

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

219492, 219501, 219216, 399330, 399335, H05B 102

Patent

active

060181516

ABSTRACT:
When the media enters the fuser, the added thermal load causes the fuser temperature to dip. Eventually, the control system compensates for the thermal load and stabilizes the fuser temperature at the desired temperature. Depending on several factors, the dip in fusing temperature may cause a degradation in the fusing process. An improved temperature profile can be achieved by increasing the amount of power supplied to the fusing system a predetermined amount of time before the thermal load enters the fusing system. Similarly, the amount of power supplied to the fusing system is decreased a predetermined amount of time before the thermal load exits the fusing system. The Desired Temperature input to the fuser temperature control system is modified to anticipate changes in thermal loads thereby changing the amount of power supplied to the fusing system.

REFERENCES:
patent: 4161644 (1979-07-01), Yanagawa et al.
patent: 4374321 (1983-02-01), Cunningham, Jr. et al.
patent: 5700994 (1997-12-01), Gheer et al.

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