Image reading apparatus and image forming system

An image forming system comprising:

• an image forming apparatus configured to form an image on a sheet;
• and
• an image reading apparatus configured to read the image formed on the sheet by the image forming apparatus, the image reading apparatus comprising:
• a conveyance path through which the sheet is conveyed in a conveyance direction;
• a light transmitting member arranged to form a part of the conveyance path;
• a first reading unit configured to read through the light transmitting member an image of a first surface of the sheet conveyed through the conveyance path in the conveyance direction;
• a second reading unit which is arranged at a position different from the first reading unit with respect to the conveyance direction and configured to read through the light transmitting member the image of the first surface of the sheet together with the first reading unit;
• a first roller disposed opposite to the first reading unit;
• a second roller disposed opposite to the second reading unit;
• a holding member configured to hold the first roller and the second roller;
• a plurality of first abutment portions provided on both end portion sides of the first roller with respect to a width direction orthogonal to the conveyance direction and configured to form a gap between the light transmitting member and the first roller by abutting on the light transmitting member;
• a plurality of second abutment portions provided on both end sides of the second roller with respect to the width direction and configured to form a gap between the light transmitting member and the second roller by abutting on the light transmitting member;
• and
• an urging member configured to urge the holding member against the light transmitting member.