Film design and improved circuit therefor enabling utilization o

Details Film design and improved circuit therefor enabling utilization o Film design and improved circuit therefor enabling utilization o

1982-03-15

1983-08-30

Perkey, William B.

354213, G03B 112

Patent

active

044013760

ABSTRACT:
An electronically controlled motor advance for film having light transmitting apertures along its edge that interact with a light source and a light sensitive switch for controlling the film advance motor. The usable film size is substantially increased by a unique method of advancing film which eliminates sprocket holes in conventional film.

REFERENCES:
patent: 4196993 (1980-04-01), Stemme et al.
patent: 4304480 (1981-12-01), Fukahori et al.

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