Image reading apparatus and control method thereof

An image reading apparatus comprising:

• a reading unit that generates image data by reading a document;
• a storage unit that stores the image data;
• a transport unit that transports the document along a transport path that passes the reading unit;
• a feeding unit that transports the document separated from a document group to the transport unit along the transport path;
• a controller that sets, at a first speed or less, a feeding operation of the feeding unit after a leading end of a preceding document transported from the feeding unit reaches the transport unit, and sets, at a second speed, the feeding operation after a rear end of the preceding document passes a predetermined position, the second speed being higher than the first speed;
• and
• an acquisition unit that acquires size information indicating a size of the preceding document, wherein
• the controller
• sets, at the second speed, the feeding operation a first time after a rear end of a succeeding document following the preceding document passes the predetermined position when the size information indicates a first size, and
• sets, at the second speed, the feeding operation a second time after the rear end of the succeeding document passes the predetermined position, the second time being longer than the first time, when the size information indicates a second size larger than the first size.

A method of controlling an image reading apparatus, the image reading apparatus including a reading unit that generates image data by reading a document, a storage unit that stores the image data, a transport unit that transports the document along a transport path that passes the reading unit, and a feeding unit that transports the document separated from a document group to the transport unit along the transport path, the method comprising:

• a first step of stopping a feeding operation of the feeding unit after a leading end of a preceding document transported from the feeding unit reaches the transport unit, and restarting the feeding operation after a rear end of the preceding document passes a predetermined position;
• and
• a second step of acquiring size information indicating a size of the preceding document, wherein
• the first step includes
• restarting the feeding operation a first time after a rear end of a succeeding document following the preceding document passes the predetermined position when the size information indicates a first size, and
• restarting the feeding operation a second time after the rear end of the succeeding document passes the predetermined position, the second time being longer than the first time, when the size information indicates a second size larger than the first size.