Automatic film retriever

Details Automatic film retriever Automatic film retriever

G - Physics

03

D

95/94.6

G03D 13/00 (2006.01) G03B 17/26 (2006.01)

Patent

CA 1117346

TITLE AUTOMATIC FILM RETRIEVER ABSTRACT OF THE DISCLOSURE An automatic film retriever comprising a first belt-like retriever plate of resilient material which is moved forward or backward in a desired order by a driving motor and which is cooperatively driven, a second retriever plate arranged below the lower surface of the first retriever plate and having a part folded downward at a leading end thereof to be inserted into the cartridge, a torque motor for rotating the spool of the cartridge either in a clockwise or in a counter- clockwise direction, a sound wave sensor for sensing a sound which is generated when a leading end of the free end of the film is moved past said folded part upon rotation of the spool in such a direction as the film is wound into the cartridge, and an infrared rays sensor for determining if the free end of the film is pulled out through the film retrieving opening of the cartridge or not, at first the first retriever plate being inserted into the cartridge, then the spool being rotated in a film winding direction, the rotation of the spool being simultaneously stopped with a sensing of said sound, then the spool being rotated in an opposite direction to unroll the film, thereafter the second retriever plate being inserted into the cartridge, the free end of the film being held between the first retriever plate and the second retriever plate, the driving motor being rotated in an opposite direction, both retriever plates being moved backward and thus the free end of the film being pulled out of the cartridge. -1-

329606

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