发明授权
- 专利标题: Method and apparatus for inspecting resistance to film draw-out
- 专利标题(中): 检查胶片拉出阻力的方法和装置
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申请号: US353440申请日: 1989-05-18
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公开(公告)号: US4925119A公开(公告)日: 1990-05-15
- 发明人: Makoto Shimizu , Katutoshi Nakamura , Noriyuki Furusawa
- 申请人: Makoto Shimizu , Katutoshi Nakamura , Noriyuki Furusawa
- 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: JPX63-121189 19880518
- 主分类号: G01L5/00
- IPC分类号: G01L5/00 ; C03C3/00 ; G01M99/00 ; G03B17/30 ; G03B17/42 ; G03B43/00 ; G03C3/00
摘要:
A method for inspecting resistance to film draw-out comprises the steps of holding a magazine in which photographic film wound around a spool is accommodated, rotating the spool in the direction that winds up the film around the spool, detecting the movement of a film leader, which has been drawn out from the magazine, to the magazine, and measuring the force required to rotate the spool when the movement of the film leader is detected. An apparatus for inspecting resistance to film draw-out comprises a magazine holder, and a spool rotation device for rotating the spool in the direction that winds up the film around the spool. A rotating force measurement device measures the force required for the spool rotation device to rotate the spool, and a film movement detector detects the movement of a film leader, which has been drawn out from the magazine, to the magazine. A device receives the output of the film movement detector and samples the output of the rotating force measurement device when the movement of the film leader is detected by the film movement detector.
公开/授权文献
- US5487517A Removable hanger 公开/授权日:1996-01-30
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