JP2005333197A5 - - Google Patents

Claims (8)

A reading unit to read an image on a document,
A platen glass disposed on the upper surface of the reading unit;
A pair of conveying rollers for conveying the document to a reading position for reading an image through the platen glass by the reading unit;
A first guide portion for guiding the document conveyed by the conveyance roller pair to the reading position;
A second guide part that is provided downstream of the first guide part in the document conveyance direction and receives the leading edge of the document that has passed through the reading position without contact with the platen glass ;
A slit portion formed above the platen glass so as to face the reading position by the downstream end of the first guide portion and the upstream end of the second guide portion;
An image reading apparatus comprising:   The sheet guide member according to claim 1, further comprising a sheet guide member that is provided on an upper surface side of the first guide portion and the second guide portion and is opposed to the slit portion, and that regulates a conveying operation of the document. Image reading device.   3. The image reading apparatus according to claim 1, further comprising a restriction unit configured to restrict the document on an upper surface side of at least one of the first guide part and the second guide part. The document conveying direction upstream end of the second guide portion, the image reading apparatus according to any one of claims 1 to 3, characterized in that located below the document transport direction downstream end of the first guide portion. The second guide unit is positioned at a retracted position where the upstream end of the second guide unit in the document transport direction is lower than the downstream end of the first guide unit in the document transport direction, and above the retracted position, the image reading apparatus according to any one of claims 1 to 3, characterized in that it comprises a driving means for moving between a transport position for transporting. A pair of unloading rollers disposed downstream of the reading position and configured to unload a document that has passed through the reading position from the second guide portion;
When the leading edge of the document is sandwiched between the pair of carry-out rollers, the second guide portion is moved from the standby position to the transport position,
6. The apparatus according to claim 5, further comprising a control unit that controls the driving unit to move the second guide unit from the transport position to the standby position when a rear end of the document passes through the reading position. The image reading apparatus described. The first guide unit has document detection means for detecting the leading edge and the trailing edge of the document,
The control means includes
Based on the leading edge detection signal of the document by the document detecting means, it is determined that the leading edge of the document is sandwiched between the pair of carry-out rollers, and the second guide unit is moved from the standby position to the transport position to detect the document. The second guide unit is moved from the conveyance position to the standby position by determining that the trailing edge of the document has passed the reading position based on detection of the trailing edge of the document by means. 6. The image reading apparatus according to 6. Comprising an image reading apparatus having a reading unit reading a document passing through the read-position, and an image forming unit for forming an image on a sheet based on image information read by the reading unit,
The image reading apparatus, an image forming apparatus, wherein an image reading apparatus according to any one of claims 1 to 7.