Radiant energy – Photocells; circuits and apparatus – With circuit for evaluating a web – strand – strip – or sheet
Reexamination Certificate
2006-12-05
2006-12-05
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
With circuit for evaluating a web, strand, strip, or sheet
C250S559400, C347S016000, C347S019000
Reexamination Certificate
active
07145160
ABSTRACT:
A method and an apparatus to determine a class of a medium on which an image is formed. The method includes emitting light to the medium; sensing the light affected by the medium; collecting a first predetermined number of features which are represented by a relationship between a parameter and an intensity of the light and determining the class of the medium using the collected features. One of a light emitting part and a light receiving part move to emit or sense the light, respectively, and the parameter varies with the movement of the light emitting part or the light receiving part.
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Luu Thanh X.
Monbleau Davienne
Staas & Halsey , LLP
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