Image reading apparatus and image forming apparatus having the same

An image reading apparatus comprising:

• a document set tray for placing a document thereon;
• carrying means for carrying the document placed on the document set tray;
• a reading section for reading an image on the document carried by the carrying means;
• and
• an output tray to which the document after the reading of the image on the document by the reading section is outputted,
• the output tray being provided so as to overlap, above the document set tray, the document set tray as vertically viewed from above,
• the image reading apparatus having (i) a small-size mode in which a small-sized document is carried so as to be read and (ii) a normal-size mode in which a normal-sized document is carried so as to be read, the small-sized document having, along a document width direction, a size not greater than a predetermined size, the document width direction being that direction of a width of a document which is perpendicular to a direction in which the document is carried by the carrying means, the normal-sized document having, along the document width direction, a size greater than the predetermined size,
• the document set tray being arranged such that at least in a case where a small-sized document is placed on the document set tray, positioning of the document to a document setting position on the document set tray is carried out by positionally matching a first edge of the document with a near-side reference position, the near-side reference position set to a position of or set in the vicinity of a first end of a document placement surface of the document set tray, wherein the first edge of the document is that one of two edges of the small-sized document which is closer, than the other one of the two edges, to a user-operating side of the image reading apparatus, and the first end of the document placement surface is one of those two ends of the document placement surface which are located along the document width direction, the one being closer to the user-operating side of the image reading apparatus than the other one of the two ends, and
• the output tray having a window made from a transparent material, the window allowing a user to see the document setting position in a case where the document placed on the document set tray is a small-sized document.