Patent ID: 7410158

Claim:
An image forming apparatus, comprising: a memory device configured to store image data; an image forming unit configured to form visible images on recording sheets in accordance with the image data stored in said memory device; a post-processing unit configured to collect the recording sheets on which images are formed by said image forming unit on an individual copy basis to prepare a bundle of the recording sheets, perform a saddle-stitching process and a center-folding process on the bundle of the recording sheets, and eject the processed recording sheets onto a predetermined eject tray; at least one eject tray other than said predetermined eject tray onto which the recording media sheets are ejected; and system control means for determining whether or not a total number of recording sheets corresponding to the image data when the image data is recorded on the recording sheets is within a limit number for said saddle-stitching process, and, when the total number of recording sheets is determined to exceed the limit number for said saddle-stitching process, performing a dividing process based on the determination before ejecting the recording sheets, wherein the dividing process divides the total number of the recording sheets into a plurality of copies, each of which contains a number of recording sheets equal to or smaller than said limit number for saddle-stitching process, and performing a face-attachment process on the image data on an individual copy basis before ejecting the recording sheets.