Fusing apparatus with self-learning heater

Details Fusing apparatus with self-learning heater Fusing apparatus with self-learning heater

1988-12-29

1990-04-24

Wayner, William E.

Electric heating

Heating devices

Combined with diverse-type art device

34 48, 219510, 355285, H05B 100, G03G 1500

Patent

active

049202502

ABSTRACT:
An apparatus for fusing toner images to suitable substrates or copy sheets of paper includes a self-learning heater that substantially prevents "droop" or drops from a desired setpoint in the fusing temperature of the apparatus. The heater itself has a variable temperature control setpoint, and is connected to means for monitoring temperature variations due to heat lost by the apparatus to the substrates or copy sheets, as well as, to means for varying the temperature control setpoint of the heater in direct response to such monitored temperature variations. The heater as such, is capable of substantially preventing significant variations in the fusing temperature of the apparatus by effectively replacing such heat loss by the fusing apparatus.

REFERENCES:
patent: 3945726 (1976-03-01), Ito et al.
patent: 4009953 (1977-03-01), Ravizza et al.
patent: 4079227 (1978-03-01), Takiguchi
patent: 4367037 (1983-01-01), Nishikawa
patent: 4556779 (1985-12-01), Hashimoto et al.
patent: 4778980 (1988-10-01), Rathbun

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