Image reader

An image reader comprising:

• a conveyance path forming member forming a part of a conveyance path extending from a conveyance start position to a discharge position via an image reading position, a document width direction being defined substantially perpendicular to the conveyance path;
• a conveying unit configured to convey documents having different widths along the conveyance path;
• a reading unit configured to read a document at the reading position, including a platen glass;
• and
• a pressing unit which extends in the document width direction, which is disposed as opposed to the reading unit, and which holds the document conveyed by the conveying unit in cooperation with the conveyance path forming member by pressing the document against the conveyance path forming member, the pressing unit being divided into a plurality of pressing members that are arranged in the document width direction and that are configured to press the document against the conveyance path forming member independently from one another and are configured to contact the platen glass when the document is not between the pressing unit and the platen glass, each pressing member having a length in the document width direction, the length of at least one pressing member being different from the length of another pressing member.