Electric heating – Microwave heating – Tunnel furnace
Patent
1977-07-22
1979-04-10
Hix, L. T.
Electric heating
Microwave heating
Tunnel furnace
354300, 219216, 219388, 34155, G03D 700
Patent
active
041485750
ABSTRACT:
The length of film being developed by heat is supported on a fluid bearing by heated air which passes through two porous elements which serve as the walls of the film passageway. The air is preheated and the porous elements themselves are separately heated in order further to raise the temperature of the air bearing.
REFERENCES:
patent: 3311525 (1967-03-01), Fanuzzi et al.
patent: 3496332 (1970-02-01), Lunde
patent: 3585917 (1971-06-01), Griffith
patent: 3727534 (1973-04-01), Low et al.
patent: 3826896 (1974-07-01), Thompson
patent: 4052732 (1977-10-01), Meadows
Christoffersen H.
Cohen Samuel
Hix L. T,.
Mathews Alan
RCA Corporation
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