Title: Temperature control means for toner fusing device in an electrostatic copier

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.

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Inventors: Nakamura, Yoshihiro (Toyokawa, JA)

Application Number: 508493
Filing Date: 1974-09-23
Publication_date: 1976-03-23
Assignee: Minolta Camera Kabushiki Kaisha (Osaka, JA)
Primary Class(es): 219/499 219/216, 219/497
Other Classes:
US Patent Ref:

3553429	Jan, 1971	Nelson	219/497.
3558853	Jan, 1971	Schluntz	219/497.
3699363	Oct, 1972	Roberts	219/499.

Other Refs:
Primary Examiner: Miller, J. D.
Assistant Examiner: Bell, Fred E.
Attorney: Wolder & Gross