Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1977-09-26
1979-10-30
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
165 89, 219216, 219530, 432 60, H05B 302, B21B 2706
Patent
active
041729765
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: 2739218 (1956-03-01), Wennerlund
patent: 2824721 (1958-02-01), Hill
patent: 2831097 (1958-04-01), Malewski
patent: 3020383 (1962-02-01), Omishi et al.
patent: 3105133 (1963-09-01), Norton
patent: 3146078 (1964-08-01), Gerster
patent: 3423573 (1969-01-01), Richards et al.
patent: 3548928 (1970-12-01), Kesten
patent: 3951585 (1976-04-01), Fujimoto
patent: 4091264 (1978-05-01), Sarcia
Asahina Yasuo
Fukushima Ichiro
Higashi Yuichiro
Kikuchi Toshiyuki
Namiki Ryoichi
Mayewsky Volodymyr Y.
Ricoh Co. Ltd.
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