To read an original without generating the deviation of the position of a read line by respective plural line sensors by simple constitution.

Relating to this original reader, in the case of performing read while the interval on the original of the line sensor A and line sensor B of an image sensor is dAB, the interval on the original of the line sensor B and the line sensor C is dBC and a line interval for reading the original is (a) (arrows L0-L11 indicate the position of the read line), the read timing of the line sensor B is delayed for the time of carrying the original for a distance bAB equivalent to a remainder at the time of dividing the interval dAB by the interval (a) or quickened for the time of carrying the original for a distance (a-bAB) to the line sensor A. Also, the read timing of the line sensor C is delayed for the time of carrying the original for the distance dBC equivalent to the remainder at the time of dividing the interval dBC by the interval (a) or quickened for the time of carrying the original for a distance (a-bBC) to the line sensor B.