Optics: motion pictures – Removable film strip magazine type
Patent
1989-10-06
1991-09-17
Brown, Brian W.
Optics: motion pictures
Removable film strip magazine type
352170, G03B 118
Patent
active
050499114
ABSTRACT:
A device for indicating a remaining quantity of the recordable portion of a recording material, such as a magnetic disk or film. The indicating device comprises a counting device which counts a remaining recordable quantity of recording material, and a warning device which outputs a warning when the reamining recordable quantity is low. The warning device is provided with an acoustic alarm device for outputting a vocal or electronic sound corresponding to the remaining quantity or an optical alarm device for outputting light indicating the value of the remaining recordable portions, or corresponding to the remaining quantity. The optical alarm mechanism is provided in such a manner that the warning light can be observed in the viewfinder of the camera.
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patent: 4858031 (1989-08-01), Fukuta
patent: 4888605 (1989-12-01), Matsumoto
Asahi Kogaku Kogyo Kabushiki Kaisha
Brown Brian W.
Dang Khanh
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