Patent ID: 9075366
Filing Date: 2015-07-07
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a circulation unit comprising a plurality of reversing units each configured to reverse a sheet of recording media having one surface printed at an image processor, the circulation unit being configured to re-feed the reversed sheet of recording media to the image processor; and a controller configured to, during duplex printing of a plurality of sheets of recording media through circulation in the circulation unit, (i) control one reversing unit among the plurality of reversing units to hold at least one sheet among the plurality of sheets, (ii) while the one reversing unit is holding the at least one sheet, circulate at least one other sheet among the plurality of sheets between the circulation unit and another reversing unit among the plurality of reversing units that is not holding the at least one sheet, and (iii) after the at least one other sheet has passed the another reversing unit, control the one reversing unit holding the at least one sheet to release the at least one sheet, so as to increase an actual circulated sheet number of the circulated plurality of sheets by a number corresponding to the at least one sheet held at the one reversing unit so that the increased actual circulated sheet number is larger than a predetermined circulated sheet number by the number corresponding to the at least one sheet held at the one reversing unit; wherein the predetermined circulated sheet number is based on a conveyance direction length of the recording media, and wherein the controller is configured to transpose images to be printed in accordance with a discharge order of the plurality of sheets, the discharge order being determined as a result of holding the at least one sheet at the one reversing unit.