Optics: motion pictures – With film treating or working
Patent
1974-05-29
1976-07-20
Hayes, Monroe H.
Optics: motion pictures
With film treating or working
352 78C, G03C 1100
Patent
active
039703800
ABSTRACT:
A film handling system to with which a film cartridge is commonly usable in each step of exposure, processing (developing) and projection of the film housed therein, wherein a safety means which advances the above mentioned film cartridge through each step in which it is used in a prescribed sequence is provided. Further an electric circuit which controls the above mentioned handling system in such manner as to activate said system according to the output of the safety means is provided so that such erroneous handling as occurs when processing or projecting unexposed film by mistake or by projecting unprocessed film can be automatically prevented.
REFERENCES:
patent: 3422740 (1969-01-01), Nerwin
patent: 3666361 (1972-05-01), Pankow
patent: 3778140 (1973-12-01), Land
patent: 3800306 (1974-03-01), Land
patent: 3832048 (1974-08-01), Batter
Ashida Akira
Hosoe Kazuya
Ishikawa Kazuo
Komine Yoshio
Takahashi Kiyoshi
Canon Kabushiki Kaisha
Hayes Monroe H.
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