Patent ID: 8049917

Claim:
An image processing device comprising: a reading section that reads image information on both sides of a two-sided printed paper document; an inquiry section that inquires operational authority over a desired operation of the two-sided printed paper document on the basis of the image information on both sides of the two-sided printed paper document read by the reading section; and an execution section that executes the desired operation of the image information on both sides of the two-sided printed paper document if the operational authority over the desired operation of the two-sided printed paper document is present as a result of the inquiry by the inquiry section, wherein the two-sided printed paper document is printed on each printing surface corresponding to a logical page of a document subject to printing in a state in which an added image indicating document identification information, page identification information including a logical page number, a logical total number of pages, and a two-sided print attribute indicating that two-sided printing is executed is synthesized, and the image processing device further comprising: an extraction section that fetches in a reading-effected order the image information on the each printing surface that is read from both sides of the two-sided printed paper document by the reading section, and extracts information of the added image from the image information; a first determining section that, if the extraction section cannot extract the added image information, determines whether the added image information is included in the image information of a next printing surface when the reading-effected order of the printing surface from which the added image information cannot be extracted is an odd number, and determines whether the added image information is included in the image information of a preceding printing surface when the reading-effected order of the printing surface from which the added image information cannot be extracted is an even number; a second determining section that, if the first determining section determines that the added image information is included in the image information of the printing surface, determines whether the two-sided print attribute is imparted to the added image information included in the image information of the printing surface, and whether the logical page number included in the page identification information agrees with the logical total number of pages; and an image processing section that, if the second determining section determines that the two-sided print attribute is imparted to the added image information and that the logical page number agrees with the logical total number of pages, ignores the image information of the printing surface from which the extraction section cannot extract the added image information, and subjects image information of another printing surface to image processing.