Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1994-05-12
1996-06-18
Paschall, Mark H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219492, 219388, 219485, 392411, 392417, 355291, H05B 102
Patent
active
055280161
ABSTRACT:
A drying apparatus for use in a photosensitive material processing system, which is designed so that nonuniformity of drying in a direction intersecting a belt-shaped photosensitive material, e.g., a photographic negative film, photographic paper, etc., is eliminated, and the overall electric power capacity of the system is minimized. A plurality of electric current heaters (44.sub.1 and 44.sub.2) are disposed in parallel in a direction intersecting belt-shaped photosensitive materials (F.sub.1 and F.sub.2) transported, and each electric current heater is individually current-controlled to change the temperature distribution of the heated air, thereby compensating for the nonuniformity of drying of the belt-shaped photosensitive materials (F.sub.1 and F.sub.2) in the lateral direction, for example. The electric current heaters (44.sub.1 and 44.sub.2) are individually current-controlled by making the current input time different for each electric current heater. Thus, it is possible to minimize the rush current and the overall electric power capacity of the system.
REFERENCES:
patent: 4321457 (1982-03-01), Edel et al.
patent: 4439931 (1984-04-01), Mizuta
patent: 4560431 (1985-12-01), Inselmann
patent: 4657572 (1987-04-01), Desai et al.
patent: 5004891 (1991-04-01), Landis
Buczynski Joseph J.
Fuji Photo Film Co. , Ltd.
Paschall Mark H.
Turner Richard C.
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