G - Physics – 06 – K
Patent
G - Physics
06
K
354/56, 352/53.7
G06K 9/20 (2006.01) B65H 23/04 (2006.01) G06K 7/10 (2006.01)
Patent
CA 1207902
ABSTRACT OF THE DISCLOSURE An optical scanner is disclosed for detecting registration marks printed on a sheet of labels and providing an output signal in response thereto. The optical sensor comprises a scanner and includes a light source for illuminating an inspection area and a light sensor responsive to the magnitude of the light reflected from the inspection area. The optical scanner also has a dectector which has a plurality of outputs and is responsive to the light sensor for providing a plurality of parallel signals varying in number in proportion to the magnitude of light reflected from the inspection area, and a display connected to the plurality of outputs of the detector for providing a plurality of visible linear-array signals in response to the plurality of parallel signals. The optical scanner also provides an output connected to one of the plurality of outputs of the detector for providing an output signal in response to the corresponding one of the plurality of parallel signals being applied in response to a registration mark detected in the inspection area. The optical sensor further includes a threshold detector connected to the output for providing a visible threshold signal in response to the output signal, and a control responsive to the light sensor and adjustable for changing responsiveness of the detector to the light sensor so that the output signal is provided only when the registration mark is present in the inspection area.
433329
Gowling Lafleur Henderson Llp
Owens-Illinois Inc.
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