Last flash inhibit for magnet actuated scanning shutter blade ar

Details Last flash inhibit for magnet actuated scanning shutter blade ar Last flash inhibit for magnet actuated scanning shutter blade ar

1977-09-02

1978-12-12

Gellner, Michael L.

354139, G03B 1504

Patent

active

041293681

ABSTRACT:
A camera control and exposure system for cameras of the self-developing type includes "scanning type" shutter blade elements which can be quickly closed to terminate an exposure interval by a magnet actuated closing spring arrangement which is thereafter automatically recocked by way of a motor driven film advance and processing mechanism. The control and exposure system is additionally adapted for use with an array of flashlamps wherein prior to each flash photographic cycle, the array of flashlamps is sensed to determine the operative condition of the last flashlamp to be fired in the array. The system then mechanically inhibits the implementation of the photographic cycle in the event that the last flashlamp to be fired in the array is defective.

REFERENCES:
patent: 3374718 (1968-03-01), Hochreiter
patent: 3391621 (1968-07-01), Merwin
patent: 3429244 (1969-02-01), Von Wasielewsky
patent: 3618492 (1971-11-01), Ellin
patent: 3961345 (1976-06-01), Arisaka
patent: 4005449 (1977-01-01), Ellin

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