Heat roller fixing apparatus

Details Heat roller fixing apparatus Heat roller fixing apparatus

1979-04-02

1981-08-18

Albritton, C. L.

Electric heating

Heating devices

Combined with diverse-type art device

219469, H05B 100

Patent

active

042848750

ABSTRACT:
Improved heat roller fixing apparatus comprising an inner cylinder having a heater therein, an outer cylinder, and a vacuum chamber which is formed between the inner cylinder and the outer cylinder and which contains a liquid heat transfer medium at low pressure is described. In particular, improvements obviating excessive heating of the inner cylinder are made by placing the heat transfer medium in the chamber so as to be in contact with the lower portion of the inner cylinder at least when said outer cylinder is stationary, or by mounting on the inner cylinder a member which serves to stir or pour the heating medium on the inner cylinder and also to transfer heat indirectly from the inner cylinder to the outer cylinder through the heating medium so that speedy evaporation of the heating medium and safe and stable fixing of images are accomplished.

REFERENCES:
patent: 3600550 (1971-08-01), Inazawa et al.
patent: 3667542 (1972-06-01), Parkes
patent: 3952798 (1976-04-01), Jacobson et al.
patent: 4091264 (1978-05-01), Sarcia
patent: 4105896 (1978-08-01), Schuster

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