Image forming apparatus having temperature and humidity detectin

Details Image forming apparatus having temperature and humidity detectin Image forming apparatus having temperature and humidity detectin

1991-06-06

1992-08-11

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355290, G03G 1520

Patent

active

051383799

ABSTRACT:
A fixing device comprises a heating roller for heating a paper sheet, a pressure roller in rolling contact with the heating roller and adapted to press the paper sheet against the heating roller, and a temperature sensor and a humidity sensor for detecting the temperature and humidity, respectively, of the outside air. The temperature of the heating roller is controlled and the pressure loading of the pressure roller is controlled in a stepless manner by means of a temperature control section and a pressure control section in accordance with the outside air temperature and humidity detected by means of the temperature and humidity sensors, respectively.

REFERENCES:
patent: 4253392 (1981-03-01), Brandon et al.
patent: 4672177 (1987-06-01), Headrick
patent: 4942434 (1990-07-01), Nakai et al.

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