发明授权
- 专利标题: Photographing device and X-ray photographing system utilizing the same
- 专利标题(中): 摄影装置和利用其的X射线摄影系统
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申请号: US252536申请日: 1994-06-01
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公开(公告)号: US5815548A公开(公告)日: 1998-09-29
- 发明人: Kenichi Suzuki , Akira Tago , Haruhisa Madate , Masaaki Kobayashi
- 申请人: Kenichi Suzuki , Akira Tago , Haruhisa Madate , Masaaki Kobayashi
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 优先权: JPX2-050855 19900302; JPX3-003254 19910116
- 主分类号: G03B42/04
- IPC分类号: G03B42/04 ; G03B42/02
摘要:
A photographing device is provided with a pair of support members positioned in mutually opposed manner across a film, a sensitivity increasing screen mounted on at least one of the paired support members, a sealing member for hermetically sealing a space containing the film and the sensitivity increasing screen, a vacuum pump for reducing the pressure in the sealed space to maintain the film and the sensitivity increasing screen in mutual close contact, and a support member for maintaining the film in a predetermined position between the support member in the sealed space. Thus the sensitizing screen can be securely contacted with the film, and errors in operation are reduced even when the photographing operation is conducted with the film in vertical or inclined position.
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