Patent ID: 8514444

Claim:
An image processing system for performing image processing, the image processing system comprising: an image forming apparatus; and an external apparatus, wherein the image forming apparatus and the external apparatus communicate with each other in order to perform the image processing, wherein the external apparatus comprises: a holding unit configured to hold image position adjustment values which correspond to sheet feeding units of an image forming apparatus; a determination unit configured to determine the image position adjustment value which corresponds to a sheet feeding unit specified in a print job; a generation unit configured to generate image data which incorporates an image position adjustment specified by the image position adjustment value determined by the determining unit, wherein the generation unit performs shift or rotation of images, formed by the image data, based on the image position adjustment value; a reception unit configured to receive, from the image forming apparatus, sheet feeding control information that includes a specification of a different sheet feeding unit, and a request to regenerate the image data to incorporate the image position adjustment specified by the image position adjustment value which corresponds to the sheet feeding unit specified in the sheet feeding control information, and wherein the image forming apparatus comprises: a determination unit configured to determine a factor which prevents processing of image data, wherein the factor correlates with a sheet feeding unit specified in a print job; a selection unit configured to select a sheet feeding unit different from the sheet feeding unit specified in the print job; and a transmission unit configured to transmit, to the external apparatus, a request to regenerate the image data to incorporate an image position adjustment specified by an image position adjustment value which corresponds to the sheet feeding unit selected by the selection unit.