Film feeder for automatic developing machine

Details Film feeder for automatic developing machine Film feeder for automatic developing machine

1995-12-27

1997-09-16

Rutledge, D.

Photography

Fluid-treating apparatus

Photographic medium or cartridge sensing

396599, 396613, 396620, 396622, 83367, 83373, G05D 1300, G03D 308

Patent

active

056690304

ABSTRACT:
In a film feeder for use in an automatic developing machine, a cutter control circuit actuates a cutter using electrical energy from a utility power source and electrical energy stored in a capacitor if a film end sensor detects the tail end of a film during normal feeding conditions. In the event that the film end sensor detects the tail end of the film in the event of a power failure, the cutter control circuit actuates the cutter using the electrical energy stored in the capacitor. This makes it possible to actuate the cutter even in the event of a power failure as well as to reduce the capacitance of the utility power source to a small level.

REFERENCES:
patent: 4771312 (1988-09-01), Yanase et al.
patent: 4791443 (1988-12-01), Foley et al.
patent: 5250974 (1993-10-01), Iwasaki et al.

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