To suppress the occurrence of deviation in an original conveying direction between pieces of image information read by a plurality of image sensors disposed along a direction of original width.

An image reading apparatus includes conveying rollers 5, 7 and a belt conveying mechanism 70 for conveying an original S so as to pass through contact glass 3 and the plurality of image sensors 9, 11 disposed at positions opposite to the contact glass along a direction of original width and reads image information of the original passing through the contact glass using these image sensors, wherein these image sensors are disposed in a staggered form along the direction of the original width, and the belt conveying mechanism includes a conveying belt that is disposed at a position opposite to the plurality of image sensors via the contact glass and conveys the original in contact with a surface thereof, by surface movement.