Method and device for controlling thermal fixing machine

Details Method and device for controlling thermal fixing machine Method and device for controlling thermal fixing machine

1994-06-29

1996-09-17

Dang, Thu Anh

Photocopying

Contact printing

Light boxes

219216, 219490, 355204, G03G 1520

Patent

active

055573851

ABSTRACT:
The present invention relates to a method and device each for controlling the temperature of a thermal fixing machine where a toner image is fixed on a recording medium in a printer, a facsimile apparatus, or a copying machine using electrophotograpic technique. The object is to control the temperature, of a thermal fixing machine with high accuracy by increasing substantially a resolution of an A/D converter without increasing a device manufacturing cost, and reducing an effect on a temperature detection value due to noises. The system includes temperature detecting device for detecting the temperature of a thermal fixing machine as a digital value, sampling device for sampling plural temperature detection values detected with said temperature detecting device, and control device for subjecting a heater to an on/off control based on plural temperature detection values sampled by the sampling device.

REFERENCES:
patent: 4415800 (1983-11-01), Dodge et al.
patent: 4551007 (1985-11-01), Elter
patent: 4868368 (1989-09-01), Araki
patent: 5140132 (1992-08-01), Shiokawa
patent: 5278394 (1994-01-01), Morino

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