Patent ID: 6895197
Filing Date: 2005-05-17
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image memory which stores image data therein; an image forming unit which outputs an image output on a predetermined side of a medium; a reversing unit which reverses the obverse and reverse of the medium, on a first side of which the image output has been already output; a medium transportation control unit which supplies the medium that has been transported to the reversing unit to the image forming unit again in order to output an image output on a second side, that is the reverse of the first side of the medium being transported to the reversing unit; and an image data control unit which, in the case where the image data of two pages are not stored in the image memory during the reversing of the medium, outputs image outputs in a first image forming mode of outputting an image output corresponding to image data of an even page on the first side of the medium, reversing the obverse and reverse, and outputting an image output corresponding to image data of an odd page on the reverse of the first side, and further outputs image outputs in a second image forming mode of, at the time when the image data stored in the image memory reach the amount of two pages, sequentially outputting an image output corresponding to image data of an n-th page that is an even page, n being a positive integer, and an image output corresponding to image data of a 2n-th page on first and second sides of each of sequential two media, respectively, reversing the obverses and reverses of the respective media, and thereafter outputting an image output corresponding to image data of an n−1-th page on the reverse of the first side of the medium, on which the image output corresponding to the image data of the n-th page is output, and subsequently outputting an image output corresponding to image data of a 2n−1-th page on the reverse of the first side of the medium, on which the image output corresponding to the image data of the 2n-th page is output.