Patent ID: 8284464

Claim:
An image processing apparatus comprising: a plurality of scanning units configured to scan on both sides of a document, the plurality of scanning units including a first scanning unit and a second scanning unit; an image processing unit configured to execute image processing based on image data obtained by scanning of any one of the plurality of scanning units; a transfer unit configured to transfer first image data obtained by the first scanning unit scanning on a first side of the document to the image processing unit in accordance with a synchronous signal, and after completion of transfer of the first image data, transfer second image data obtained by the second scanning unit scanning on a second side of the document to the image processing unit in accordance with the synchronous signal, wherein the second image data is temporarily stored in a storage unit before transfer of the second image data; and a setting unit configured to set processing contents of the image processing to be executed by the image processing unit, wherein the transfer unit transfers the second image data on which the image processing is not executed by the image processing unit, from the storage unit in which the second image data has been temporarily stored, to the image processing unit in accordance with the synchronous signal whose cycle time is changed in accordance with the processing contents set by the setting unit.