The present invention provides an image reading apparatus comprising a
scanning member movable along an original mounting table and provided
with a reading element for reading an original image, a frame member
housing the scanning member, and a control board adapted for controlling
the scanning member and provided in the frame member, wherein the control
board is so positioned that, when the scanning member moves toward the
control board, a portion protruding under the scanning member does not
pass on the control board.