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Patent Searching and Data


Title:
STORAGE DEVICE FOR FILM INFORMATION HOLE
Document Type and Number:
Japanese Patent JPS5741630
Kind Code:
A
Abstract:

PURPOSE: To set required information automatically by a setting device for film information, by driving the setting device by using an electromagnetic device on the basis of information read by photoelectric elements.

CONSTITUTION: Information (e.g., photographic speed) holes (h) provided to a film F are read by photoelectric detectors 1a, 1b, 2a, and 2b and discriminated by an information extracting circuit. Each time a pulse generating circuit 4 generates a prescribed number of pulses according to the obtained information, an electromagnet Mg attracts the armature 5a of a lever 5 and as the lever rotates around a shaft 5c counterclockwise, a feed pawl 5d rotates a ratchet wheel 7 clockwise by one tooth 1. Once a display plate 12 is rotated, an information setting resistor 8 united with the ratchet wheel inputs necessary information to an exposure arithmetic circuit. The input information is stored until photographing is completed and a back cover is opened to separate the lever 5 and reversal motion preventing lever 6 of the ratchet wheel from the ratchet wheel with a lever 9.


Inventors:
SATOU AKIHIKO
YONEDA OSAMU
NAKANO YOSHIYUKI
TOMINO NAOKI
ISHIGURO YASUAKI
KONDOU YOSHINOBU
Application Number:
JP11679880A
Publication Date:
March 08, 1982
Filing Date:
August 25, 1980
Export Citation:
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Assignee:
NIPPON CHEMICAL IND
International Classes:
G03B1/00; G03B17/00; G03B17/18; G03B17/36; G03B17/42; (IPC1-7): G03B1/00