Image reader, and method and computer-readable medium for the same
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United States of America Patent
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Dec 5, 2017
Issued Date -
N/A
app pub date -
Dec 30, 2016
filing date -
Aug 29, 2014
priority date (Note) -
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Abstract
An image reader including a document table having a reference point, a first region of a sheet having a predetermined size when a vertex of the sheet is positioned on the reference point, and a second region, a changing mechanism changing a reading position in a sub scanning direction, and a controller configured to control the changing mechanism to change the reading position to a first position such that a distance in the sub scanning direction between the reference point and the first position corresponds to a length of the predetermined sheet size in the sub scanning direction, acquire specific digital data of the second region through image reading in the first position with a light source turned off, compare a particular value of the specific digital data with a criterion value within the second region, and determine a state of a document cover based on the comparison.
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