Device for detecting abnormal temperature in fixer

Details Device for detecting abnormal temperature in fixer Device for detecting abnormal temperature in fixer

1977-01-03

1978-08-01

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

219216, 361165, 361182, H02H 504

Patent

active

041046927

ABSTRACT:
A device for detecting an abnormal temperature in a fixer, including a pulse generation controller capable of detecting the temperature in the fixer, comparing it with a predetermined reference temperature, and generating pulses continuously while the fixer temperature is lower than the reference temperature or generating no pulse at any other time; a pulse interrupter for interrupting the pulse output from the pulse generation controller until the temperature in the fixer reaches a desired fixing temperature for the first time after the start of power supply to the fixer, and an abnormality detector for detecting an abnormal fixing temperature when the integral of the pulses having passed through the pulse interrupter within a given time has reached a predetermined value.

REFERENCES:
patent: 4034189 (1977-07-01), Sakamaki et al.

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