| 摘要 |
The image reader comprises n(integer of 2 or more) pieces of line sensors arranged in parallel disposed at an equal pitch and shifted at a 1/n pitch in a sensor arranging direction (main scanning direction) with respect to other line sensors, first compensating unit for compensating spatial positions of the line sensors, second compensating unit for compensating a train of signals of each of the line sensors so that a predetermined moving average of a target pixel of the signal train in one line sensor among the line sensors is, in a signal train of another line sensor among them, coincident with a predetermined moving average of a target pixel corresponding to the target pixel in the one line sensor, and interleaving unit for interleaving the signals which have been compensated by the second compensating unit. The image reader is capable of increasing a resolution while simply keeping an area of light receiving elements of a sensor to some extent at a low cost.
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