发明授权
- 专利标题: Film wind-up control apparatus for a camera
- 专利标题(中): 相机用卷帘控制装置
-
申请号: US13871申请日: 1987-02-12
-
公开(公告)号: US4720721A公开(公告)日: 1988-01-19
- 发明人: Hisashi Hamada , Katsuhiko Yamamoto , Takeshi Yoshino , Masayoshi Hirai , Shiro Hashimoto , Michihiro Shiina , Shigenori Goto
- 申请人: Hisashi Hamada , Katsuhiko Yamamoto , Takeshi Yoshino , Masayoshi Hirai , Shiro Hashimoto , Michihiro Shiina , Shigenori Goto
- 申请人地址: JPX Kanagawa
- 专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人地址: JPX Kanagawa
- 优先权: JPX61-28705 19860212; JPX61-28706 19860212
- 主分类号: G03B1/60
- IPC分类号: G03B1/60 ; G03B1/12
摘要:
A film wind-up control apparatus of a camera in which a film is transported in zigzag direction passing around at least a guide roller located before an exposure station, is adapted to advance the film a predetermined length of the film when an exposure is made in a predetermined period of time and an extra length in addition to the predetermined length after the predetermined period of time has elapsed, so as to advance that part of the film which was previously positioned around the guide roller, beyond the exposure station. The apparatus is also adapted to indicate the number of possible exposures with one decrement every other occurrence of the extra length of film advance. In this way, film that has become permanently curled around the guide roller never comes to rest in the exposure station; but at the same time, the count of remaining frames is kept accurate.
公开/授权文献
- USD367197S Cushion for a shopping cart child seat 公开/授权日:1996-02-20
信息查询