发明授权
- 专利标题： Determination of extreme density values of photographic originals
- 专利标题（中）： 确定摄影原型极限密度值
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申请号： US790136申请日： 1977-04-22
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公开(公告)号： US4082465A公开(公告)日： 1978-04-04
- 发明人: Horst Bickl , Helmut Treiber , Gunter Findeis , Bernhard Knor , Bernd Payrhammer , Berthold Fergg
- 申请人： Horst Bickl , Helmut Treiber , Gunter Findeis , Bernhard Knor , Bernd Payrhammer , Berthold Fergg
- 申请人地址： DT Leverkusen
- 专利权人： AGFA-Gevaert, A.G.
- 当前专利权人： AGFA-Gevaert, A.G.
- 当前专利权人地址： DT Leverkusen
- 优先权： DT2445831 19740925
- 主分类号： G01N21/59
- IPC分类号： G01N21/59 ; G03B27/72 ; G01N21/22 ; G01J3/46
摘要：
Each original in a strip of such originals is scanned during longitudinal travel of the strip using a scanning spot which repeatedly traverses a stationary scan line extending transverse to the direction of strip travel. The scanning spot has a scanning speed such that the scanning spot travels from one to the other end of the stationary scan line in a time less than the time in which the strip travels a distance equal to the breadth of the scan line. The scanning spot which repeatedly traverses the scan line is generated using a light shield having a slit which delimits the scan line and a rotating disk having equiangularly spaced apertures which move through a stationary light beam passing through the moving strip of originals.
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