Temperature control means for toner fusing device in an electros

Details Temperature control means for toner fusing device in an electros Temperature control means for toner fusing device in an electros

1974-09-23

1976-03-23

Miller, J. D.

Electric heating

Heating devices

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

219216, 219497, H05B 102

Patent

active

039461998

ABSTRACT:
A temperature control network for a toner fusing device in an electrostatic copier, includes a temperature sensing member located within the toner fusing device generating an electric signal corresponding to the temperature within the toner fusing device to control the electric power supplied to the fusing device heating unit by way of a bridge and differential amplifier circuit to maintain the temperature in the toner fusing device constant, while the electric signal from the temperature sensing member controls other devices in the electrophotographic reproducing apparatus, when the temperature in the fusing device reaches a toner fusible temperature upon starting the operation of the electrostatic copier or when the toner fusing device is cooled to a temperature below a given temperature upon the termination of the operation of the electrostatic copier.

REFERENCES:
patent: 3553429 (1971-01-01), Nelson
patent: 3558853 (1971-01-01), Schluntz
patent: 3699363 (1972-10-01), Roberts

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