Patent ID: 8368973

Claim:
An image reading apparatus comprising: a feeding unit configured to sequentially feed a plurality of documents including at least a first document and a second document loaded on a document positioning plate at constant time interval; a motor configured to drive the feeding unit; a reading sensor configured to read a document; a transmission unit configured to transmit an image on the first document to an external device after the first document is read by the reading unit; a receiving unit configured to receive a predetermined instruction for reading the first document from the external device after the image on the first document is transmitted to the external device; a feeding roller arranged in an upstream side of the reading sensor configured to convey the document using driving power of the motor; a driving unit configured to drive the motor in order to convey the first document read by the reading sensor at a first speed and drive the motor in order to convey the second document to the upstream side of the reading sensor at a first speed profile including a second speed which is higher than the first speed; and a control unit configured to control the driving unit based on whether the receiving unit receives the predetermined instructions within a predetermined period of time and status of the transmission of the image to the external device, wherein the predetermined period of time to receive the predetermined instructions is based on the conveyed document positionally passing a predetermined position and arriving at a predetermined position, and wherein, in a case where the predetermined instruction is not received by the receiving unit within the predetermined period of time and the image on the first document has been transmitted to the external device by the transmission unit, the second document is conveyed to the upstream side of the reading sensor at a second speed profile including a third speed which is lower than the first speed.