Image reading apparatus and image forming apparatus

An image forming apparatus comprising:

• an image forming portion configured to form an image on a sheet;
• and
• an image reading apparatus configured to read an image of an original, wherein
• the image reading apparatus includes:
• an original base plate glass on which an original is placed;
• an optical unit movably provided beneath the original base plate glass, and configured to read an image on an original mounted on the original base plate glass as moving from an upstream side to a downstream side in a moving direction of the optical unit;
• an apparatus main body containing the optical unit;
• a flexible flat cable connected to the optical unit at one end thereof and connected to a controller at the other end thereof and provided to be deformable accompanying the movement of the optical unit, the flexible flat cable having a curved portion formed between the one end thereof and the other end thereof,
• wherein the flexible flat cable elongates for an upstream side in the moving direction from an end of the optical unit, and turned and curved to form an arc for passing beneath the optical unit to be connected with the apparatus main body;
• a first friction member disposed on an inner bottom surface of the apparatus main body;
• and
• a second friction member disposed on the inner bottom surface of the apparatus main body at the upstream side of the first friction member in the moving direction of the optical unit, the second friction member having a frictional force smaller than that of the first friction surface,
• wherein in a case where the optical unit is positioned at an end of the upstream side in the moving direction, the flexible flat cable abuts on the first friction member and the second friction member.