发明授权
- 专利标题: Automatic rewinding camera
- 专利标题(中): 自动倒带摄像机
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申请号: US353031申请日: 1982-03-01
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公开(公告)号: US4400074A公开(公告)日: 1983-08-23
- 发明人: Kazuhiko Akiyama , Takeshi Yoshino , Michihiro Shiina , Shigeo Sato , Tetsuo Nishizawa , Toshio Yoshida , Nobuo Kobayashi
- 申请人: Kazuhiko Akiyama , Takeshi Yoshino , Michihiro Shiina , Shigeo Sato , Tetsuo Nishizawa , Toshio Yoshida , Nobuo Kobayashi
- 申请人地址: JPX Saitama
- 专利权人: Fuji Photo Optical Co., Ltd.
- 当前专利权人: Fuji Photo Optical Co., Ltd.
- 当前专利权人地址: JPX Saitama
- 优先权: JPX56-26731 19810227; JPX56-28365 19810302; JPX56-28369 19810302; JPX56-32476 19810309; JPX56-35397[U]JPX 19810316
- 主分类号: G03B17/42
- IPC分类号: G03B17/42 ; G03B1/18 ; G03B17/36
摘要:
An automatic rewinding camera wherein an automatic advance of the photographic film by one frame is caused by shutter release operation and rewinding of the photographic film is automatically started when the film is prevented from further advance. The camera has a film-driven sprocket wheel, by the rotation of which film movement signals are produced. A timer circuit maintains, during the passage of a predetermined active time which is shorter than the time required to advance the photographic film by one frame, the camera motor in forward rotation so as to advance the photographic film. The timer circuit is reset by the film movement signals. But when those film signals stop, that is, when the film is fully extended from the cartridge, then the timer is not reset; and the measurement of the full predetermined active time, by the timer, without resetting, results in the motor being reversed to rewind the film.
公开/授权文献
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