Camera with a frame shift prevention function

A camera for film feeding of film stored in a cartridge and including perforations, said camera including a frame shift prevention function to prevent frame shifts caused by actions external to said camera, said camera comprising:

• a frame shift prevention member movable from a first position in a film feeding path to a second position outside the film feeding path by forces applied to said prevention member by film feeding, wherein said prevention member includes a first oblique plane and a second oblique plane, said first oblique plane making contact with an edge of a film perforation when said film is fed in a first direction in which frame shifts occur more easily than in a second direction opposite to the first direction and said second oblique plane making contact with an edge of said film perforation when said film is fed in the second direction, said first oblique plane defining a first angle with said first direction so as to oppose film feeding due to said external actions and said second oblique plane defining a second angle with said second direction, said second angle being smaller than said first angle;
• and
• a pressure plate to maintain the flatness of said film, wherein said pressure plate and said prevention member are formed as a one-piece unitary structure.

A camera for film feeding of film stored in a cartridge and including perforations, said camera including a frame shift prevention function to prevent frame shifts caused by actions external to said camera, said camera comprising:

• a frame shift prevention member movable from a first position in a film feeding path to a second position outside the film feeding path by forces applied to said prevention member by film feeding, wherein said prevention member includes a first oblique plane and a second oblique plane, said first oblique plane making contact with an edge of a film perforation when said film is fed in a first direction in which frame shifts occur more easily than in a second direction opposite to the first direction and said second oblique plane making contact with an edge of said film perforation when said film is fed in the second direction, said first oblique plane defining a first angle with said first direction so as to oppose film feeding due to said external actions and said second oblique plane defining a second angle with said second direction, said second angle being smaller than said first angle;
• and
• a camera body, wherein said prevention member and said camera body are formed as a one-piece unitary structure.

A camera for film feeding of film stored in a cartridge and including perforations, said camera including a frame shift prevention function to prevent frame shifts caused by actions external to said camera, said camera comprising:

• frame shift prevention means movable from a first position in a film feeding path to a second position outside the film feeding path by forces applied to said prevention member by film feeding, wherein, in said first position, said prevention means contacts an edge of a film perforation to prevent said frame shifts and provides greater film feeding resistance when the film is fed in a first direction than when the film is fed in a second direction opposite to the first direction;
• and
• pressure plate means for maintaining the flatness of said film and elastic support means mounted on said pressure plate means for elastically supporting said prevention means.

A camera for film feeding of film stored in a cartridge and including perforations, said camera including a frame shift prevention function to prevent frame shifts caused by actions external to said camera, said camera comprising:

• frame shift prevention means movable from a first position in a film feeding path to a second position outside the film feeding path by forces applied to said prevention member by film feeding, wherein, in said first position, said prevention means contacts an edge of a film perforation to prevent said frame shifts and provides greater film feeding resistance when the film is fed in a first direction than when the film is fed in a second direction opposite to the first direction;
• and
• pressure plate means for maintaining the flatness of said film, wherein said pressure plate means and said prevention means are formed as a one-piece unitary structure.

A camera for film feeding of film stored in a cartridge and including perforations, said camera including a frame shift prevention function to prevent frame shifts caused by actions external to said camera, said camera comprising:

• frame shift prevention means movable from a first position in a film feeding path to a second position outside the film feeding path by forces applied to said prevention member by film feeding, wherein, in said first position, said prevention means contacts an edge of a film perforation to prevent said frame shifts and provides greater film feeding resistance when the film is fed in a first direction than when the film is fed in a second direction opposite to the first direction;
• and
• a camera body, wherein said prevention means and said camera body are formed as a once-piece unitary structure.