发明授权
- 专利标题： Method and system for grading articles according to color
- 专利标题（中）： 根据颜色分级物品的方法和系统
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申请号： US49764974申请日： 1974-08-15
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公开(公告)号： US3917070A公开(公告)日： 1975-11-04
- 发明人: ASFOUR EMIL S
- 申请人： ASFOUR EMIL S
- 专利权人： Emil S Asfour
- 当前专利权人： Emil S Asfour
- 优先权： US49764974 1974-08-15; US23534272 1972-03-16
- 主分类号： B07C5/342
- IPC分类号： B07C5/342
摘要：
Tobacco leaf is graded by the steps of passing the leaf before a photo-detector, limiting the wave length sensed by the detector to between 660 and 680 m Mu , preferably 670 m Mu , measuring the remission value of the leaf and classifying the leaf in response thereto at selected predetermined levels of remission value.