发明授权
US5576785A Film feeding control device for accurate alignment of film frames and camera aperture 失效
胶片进给控制装置,用于胶片框架和相机孔径的精确对准

  • 专利标题: Film feeding control device for accurate alignment of film frames and camera aperture
  • 专利标题(中): 胶片进给控制装置,用于胶片框架和相机孔径的精确对准
  • 申请号: US482557
    申请日: 1995-06-07
  • 公开(公告)号: US5576785A
    公开(公告)日: 1996-11-19
  • 发明人: Kazuyuki KazamiNorikazu Yokonuma
  • 申请人: Kazuyuki KazamiNorikazu Yokonuma
  • 申请人地址: JPX Tokyo
  • 专利权人: Nikon Corporation
  • 当前专利权人: Nikon Corporation
  • 当前专利权人地址: JPX Tokyo
  • 优先权: JPX2-406295 19901206; JPX2-406296 19901206; JPX2-409808 19901210
  • 主分类号: G03B1/60
  • IPC分类号: G03B1/60 G03B17/42 G03B1/18
Film feeding control device for accurate alignment of film frames and
camera aperture
摘要:
A film feeding cessation adjusting device for cameras is capable of accurately stopping to a predetermined stopping position each frame of a film having a minimum number of perforations in order to ensure a sufficient data recording area. The film feeding cessation adjusting device includes a film feeding device for feeding a film, a perforation detection device for detecting a perforation of the film, a timer device for measuring a time required for film feeding, a stopping signal generating device for obtaining a time which is delayed by a predetermined period from the time at which the perforation detection device detects the perforation, on the basis of the results of the measurement of the timer device, and for generating a feeding stopping signal at the obtained time, and a control device for stopping film feeding of the film feeding device when it receives the feeding stopping signal.
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