Patent ID: 8294941

Claim:
A data processor connected to an image-forming device, the image-forming device comprising an image forming unit for forming images based on image data and a feeding unit for feeding a sheet of recording medium toward the recording unit, the data processor comprising: a data transmitting unit configured to transmit to an image-forming device image data to be recorded on a sheet of recording medium; a next page determining unit configured to determine whether there exists an image to be recorded on an (N+1) th sheet of recording medium after the data transmitting unit begins to transmit image data for an image to be recorded on an N th sheet of recording medium and before the data transmitting unit has completed transmitting the image data for the image to be recorded on the N th sheet of recording medium where N is an integer greater than or equal to 1; and an indicate data transmitting unit configured to transmit indicate data indicating existence of the image to be recorded on the (N+1) th sheet of recording medium to the image-forming device before the data transmitting unit has completed transmitting the image data for the image to be recorded on the N th sheet of recording medium when the next page determining unit determines that there exists the image to be recorded on the (N+1) th sheet of recording medium, wherein the image data to be recorded on the N th sheet of recording medium comprises a plurality of pieces of image division data for a plurality of regions of the image to be recorded on the N th sheet of recording medium, the data transmitting unit transmitting the plurality of pieces of image division data to the image-forming device for recording the image on the N th sheet of recording medium in sequence from a region at a leading edge of the recording medium to a region at a trailing edge of the recoding medium, and wherein the indicate data transmitting unit transmits the indicate data to the image-forming device after the data transmitting unit has transmitted at least one piece of image division data to the image-forming device, and wherein remaining pieces of image division data that remain untransmitted when the indicate data transmitting unit transmits the indicate data to the image-forming device has a data size greater than or equal to a predetermined value, the predetermined value corresponding to a distance between the feeding unit and a prescribed position within the image forming device.