Camera having a load prevention member capable of controlling fi

Details Camera having a load prevention member capable of controlling fi Camera having a load prevention member capable of controlling fi

1995-06-06

1997-06-17

Metjahic, Safet

Photography

With film drive

Double exposure prevention

396515, 396538, G03B 1902

Patent

active

056406347

ABSTRACT:
The present invention is directed to a camera having a cartridge chamber, which is formed as a hole in the body of the camera, into which a film cartridge is inserted along its axial direction through an access opening of the hole. The cartridge has an identifying mechanism for indicating whether the film in the cartridge has been used. The camera includes a load prevention member provided in the cartridge chamber that engages the identifying mechanism of the cartridge and prevents insertion of the cartridge into the chamber when the identifying mechanism indicates that the film has been used. The camera also includes a signal output circuit for outputting a load signal when the cartridge is loaded into the cartridge chamber and a non-load signal when the cartridge is unloaded from the cartridge chamber. The signal output circuit outputs the load signal before the cartridge engages the load prevention member.

REFERENCES:
patent: 4240734 (1980-12-01), Nomura et al.
patent: 4832275 (1989-05-01), Robertson
patent: 4888604 (1989-12-01), Tosaka et al.
patent: 4994833 (1991-02-01), Cocca
patent: 5136317 (1992-08-01), Goto et al.
patent: 5159365 (1992-10-01), Takahashi et al.
patent: 5463435 (1995-10-01), Ezawa

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