Camera for use with a roll photo film

Details Camera for use with a roll photo film Camera for use with a roll photo film

1998-02-18

1999-06-29

Gray, David M.

Photography

With film drive

Having significant electronic circuit detail

396415, 396511, 396538, G03B 1724

Patent

active

059180838

ABSTRACT:
A camera is used with a Brownie photo film, which has a photo filmstrip on which plural frames are formable serially. A light-shielding leader is disposed on a front end of the photo filmstrip. A light-shielding trailer is disposed on a rear end of the photo filmstrip. The Brownie photo film is wound about a supply spool with the trailer positioned inside and with the leader positioned outside. In the camera, a photo film supply chamber is formed for loading of the Brownie photo film. A photo film take-up chamber has a take-up spool disposed in a rotatable manner, for winding the Brownie photo film from the photo film supply chamber. The take-up spool has a spool core, and an insertion slit for receiving insertion of the leader through the spool core. A drive shaft in the photo film supply chamber rotates the take-up spool, to transport the Brownie photo film to the photo film take-up chamber and wind the Brownie photo film about the take-up spool. A motor rotates the drive shaft. A rotational detector switch detects a rotational position of the drive shaft. A controller controls the motor in accordance with a signal from the rotational detector switch, to set the drive shaft in at least one specified rotational position before insertion of the leader into the insertion slit. The insertion slit is directed in a predetermined orientation for facilitating receipt of the leader.

REFERENCES:
patent: 4623232 (1986-11-01), Wong et al.
patent: 4720719 (1988-01-01), Hamada et al.

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