Image reading apparatus
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United States of America Patent
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Aug 26, 2003
Grant Date -
N/A
app pub date -
Apr 8, 1999
filing date -
Apr 10, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
In an image reading apparatus for reading an original image, an optimum charge storage time of a line image sensor (105) in generating shading correction data and an optimum charge storage time of the sensor in reading an original image using the generated data are stored in a storage time setting unit (103) in correspondence with each of the first reading mode in which the image of an original placed on an original table (201) is read while moving the sensor and the second reading mode in which the image of an original fed by an ADF one by one is read at a predetermined position while fixing the sensor at the position. To actually read an original image in the first or second reading mode, an optimum value is selected from the plurality of stored storage times and used.
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