Patent ID: 8848264

Claim:
An image reading apparatus comprising: a reading unit configured to read an image of a document; a feeding unit configured to feed the document; a carriage that holds the reading unit and is configured to move in a predetermined direction; a motor; a motor-side transmission gear configured to transmit power supplied from the motor; a feeding unit-side transmission gear configured to transmit the power to the feeding unit in a feeding reading of reading an image of the document, which is fed by the feeding unit, by using the reading unit; a carriage-side transmission gear configured to transmit the power to the carriage in a moving reading of reading an image of the document by using the reading unit while moving the carriage; a switching gear configured to be switched between: a feeding unit-side position coupling the motor-side transmission gear and the feeding unit-side transmission gear; and a carriage-side position coupling the motor-side transmission gear and the carriage-side transmission gear; a sensor configured to output a detection signal which is changed depending on whether a document being fed by the feeding unit; and a control device configured to perform: a determination process of determining whether the document being fed by the feeding unit has jammed, based on the detection signal output from the sensor; and a driving process of, when it is determined that the jam has occurred, driving the motor in a direction of releasing a meshed state between the feeding unit-side transmission gear and the switching gear.