PURPOSE: To prevent a read picture from being deviated in position by providing a circuit recognizing duplicated data number on a floating face corresponding to a floating distance of an original and a selection circuit excluding one of duplicated data read by plural optical systems.

CONSTITUTION: Duplicated picture elements (n) calculated by a recognizing circuit 14 from one of picture data 12A, 12B read by charge coupling elements 3A, 3B and outputted in parallel are eliminated by a selection circuit 15, converted into a serial data 13 and outputted as output picture data. The duplicated picture elements (n) are obtained by the recognizing circuit 14 in figure in this way and data for (n) picture elements' share is eliminated by the data selection circuit 15, then the duplicated data read duplicatedly by a read area in advance are eliminated, and the joint of the image read by the read area is not hollow and the image is read while no shift is caused.