Patent ID: 9235370
Filing Date: 2016-01-12
CPC Classification: G06F

Claim Text:
1. An image forming system to print an image based on image data obtained by processing print data composed of data of a plurality of pages in order of page, the image forming system comprising: a plurality of image forming apparatuses connected in series in a paper conveyance direction, wherein the image forming apparatuses include: (i) a first image forming apparatus that forms an image on paper, and (ii) a second image forming apparatus disposed downstream of the first image forming apparatus in the paper conveyance direction; and a printer controller comprising a CPU and connected to the first image forming apparatus and the second image forming apparatus, wherein the printer controller is configured to: wherein for each set of two consecutive first and second complete pages of the print data corresponding respectively to front-side data and back-side data, the printer controller is configured to perform control to process the first complete page of the print data corresponding to the front-side data before processing the second complete page of the print data corresponding to the back-side data, wherein the printer controller is configured to transmit the front-side data corresponding to the first complete page of the print data to the second image forming apparatus after processing of the first complete page of the print data corresponding to the front-side data is completed, and transmit the back-side data corresponding to the second complete page of the print data to the first image forming apparatus after processing of the second complete page of the print data corresponding to the back-side data is completed, such that, for image data corresponding to each set of two consecutive first and second complete pages of the print data, the front-side data corresponding to the first complete page of the print data is transmitted to the second image forming apparatus before the back-side data corresponding to the second complete page of the print data is transmitted to the first image forming apparatus, and wherein, with respect to each set of two consecutive first and second complete pages of the print data, the second image forming apparatus is controlled to perform printing of an image based on the front-side data corresponding to the first complete page of print data after the first image forming apparatus completes printing of an image based on the back-side data corresponding to the second complete page of print data.