PICTURE READERS AND METHOD FOR CONTROLLING THE SAME

摘要

An image reader is composed of: a read unit 2 provided with a contact member 21 which abuts an original bed 11 of a flat bed unit 1; and a pressing element 30 for causing the read unit 2 and the original bed 11 to press against each other. Also, the image reader is composed of: an apparatus body 50 including a read unit 102 and an original bed 51; and an original cover 42 including a light source 43 and a diffusion plate 45 and attached to the apparatus body 50 in such a manner as to be freely opened and closed. The distance between a translucent original 41 placed on the original bed 51 and the light source 43 is variable according to the thickness of the translucent original 41. Further, in the image reader, a cumulative difference between the movement of the optical unit 102 and the movement of a light source unit 44 is previously read; and, at the time of start of scanning for read, the relative position of the optical unit 102 and the light source unit 44 is shifted in reverse in relation to the direction of the cumulative difference. <IMAGE>