Contact image sensor, output correction device for contact image sensor, and output correction method for contact image sensor
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United States of America Patent
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Dec 6, 2016
Grant Date -
Jun 4, 2015
app pub date -
Jul 10, 2013
filing date -
Aug 10, 2012
priority date (Note) -
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Abstract
A light source unit emits light for irradiating a document. A light guide in which light emitted from the light source unit propagates has a first exit part for emitting light to the document and a second exit part, which is a different part from the first light part, for emitting light to the outside. A corrective light receiver is disposed in an area receiving direct light of the light emitted from the second exit part, and outputs reference data corresponding to the direct light. A controller compares predetermined criterion data with the reference data output from the corrective light receiver, and performs processing for correcting a bright output based on a result of the comparison.
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