发明授权
- 专利标题: Film transporting device for use in a camera
- 专利标题(中): 用于相机的胶片输送装置
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申请号: US631155申请日: 1984-07-17
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公开(公告)号: US4540261A公开(公告)日: 1985-09-10
- 发明人: Toshiaki Matsumoto , Nobuyuki Taniguchi
- 申请人: Toshiaki Matsumoto , Nobuyuki Taniguchi
- 申请人地址: JPX Osaka
- 专利权人: Minolta Camera
- 当前专利权人: Minolta Camera
- 当前专利权人地址: JPX Osaka
- 优先权: JPX56-168242 19811020
- 主分类号: G03B1/62
- IPC分类号: G03B1/62 ; G03B17/36 ; G03B17/42 ; G03B1/18
摘要:
A film transporting device for use in a camera disclosed is so designed as to rewind the film such that no film portion is engaged in film take-up sprocket, resulting in an easy take out of the use film. The device in one form includes a counter that counts up the number of frames during a wind-up operation is carried out after the positioning of a film leader in contact with the take-up sprocket, and during a rewind operation, the counter counts down the same number of frames, or more, to locate the film leader in a disengaged position from the sprocket. The device in another form includes a film perforation detector. In this form, the film rewind operation is carried out until the perforation detector stops detecting the perforation. In a further form, the device includes a mechanical counter which counts up the frames used during wind-up operation, and during rewind operation counts down more than the number counted up to ensure that the film leader portion is withdrawn from the take-up sprocket.
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