Patent ID: 8248655

Claim:
An image forming apparatus which has a double-side copying function, comprising: at least either one of an original document detection section that detects a size of an original document, and an original document size setting section that sets a size of the original document as required; an original document top position setting section that sets a top position of the original document as required; a binding direction setting section that sets a binding direction of the original document and a binding direction of an output sheet as required; a top orientation determination section that determines an orientation of the top of a scanned data of the original document based on whether a front face or a back face of the original document is scanned, whether the original document is scanned by a table or an ADF, the binding direction of the original document set by the binding direction setting section, the top position of the original document set by the original document top position setting section, and whether the front face and the back face of the original document is simultaneously scanned or the front face and the back face of the original document is sequentially scanned in case of double-side copying; an output size setting section that sets a size of the output sheet as required; a print magnification ratio setting section that sets a print magnification ratio as required; and a copy region determination section that sets a copy region with reference to a top left corner of the original document based on the orientation of the top of the scanned data of the original document determined by the top orientation determination section, the top left corner being identified when the original document is placed such that the top position thereof is upward, wherein when the original document is scanned by the table, the orientation of the top of a scanned data of the original document is determined based on the top position of the original document set by the original document top position setting section, when a front face of the original document is scanned by the ADF, the orientation of the top of a scanned data of the original document is determined based on the top position of the original document set by the original document top position setting section, and when a back face of the original document is scanned by the ADF, the orientation of the top of a scanned data of the original document is determined based on the binding direction of the original document set by the binding direction setting section the top position of the original document set by the original document top position setting section, and whether the front face and the back face of the original document is simultaneously scanned or the front face and the back face of the original document is sequentially scanned.