| 摘要 |
An image reader includes a first line sensor that reads first image lines of an original document; a second line sensor that reads second image lines of the original document, the second image lines being located apart from the first image lines in a sub-scanning direction, respectively; and a control unit configured to, in the case where an abnormality occurs during reading of a first image line by the first line sensor, alternately switch reading of the first image lines by the first line sensor and reading of the second image lines by the second line sensor at a time point when a reading position of the second line sensor reaches a reading stop position of the first line sensor at which the abnormality has occurred.
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