Patent ID: 8899571

Claim:
A sheet-through document reading apparatus comprising: a document tray on which a document is capable of being placed; a feed unit operable to feed the document on the document tray; a resist convey unit operable to perform consistency processing on the document fed by the feed unit; a first drive unit operable to rotationally drive the resist convey unit; a read convey unit operable to feed the document subjected to consistency processing by the resist convey unit; a second drive unit operable to rotationally drive the read convey unit; a reading unit operable to read, at a fixed reading position, the document conveyed by the read convey unit; a side-reversing convey unit operable to reverse a document whose obverse side has been read by the reading unit, and to refeed the reversed document to the resist convey unit not via the feed unit so as to permit a reverse side of the document to be read by the reading unit; and a control unit controlling a ratio of a conveying velocity of the resist convey unit to a conveying velocity of the read convey unit such that the ratio while the document is being fed for reading of the obverse side of the document is greater than the ratio while the document is being refed to the resist convey unit by the side-reversing convey unit for reading of the reverse side of the document.