To provide an image forming device wherein partition plates to which wirelessly readable tag memories are added are placed on printed matters discharged to an output bin in response to printing jobs input from information processors via a network for sectioning the printed matters, the source of the printed matters not collected for a preset time or longer is informed of collecting request by periodically reading data for the tag memories, and information relating to the printing jobs for the printed matters not collected is displayed on a display part.

The image forming device comprises a partitioning means having partition media 42, 44, 46 having identification numbers placed on discharged printed matters 41, 43, 45 for sectioning the printed matters to be accumulated on the output bin 5 for every printing job, and a collection informing means for informing the source of the printing jobs for the printed matters of the order of the accumulation of the printed matters and identifying information for the image forming device at preset time intervals for requesting the collection of the printed matters when detecting that the identifying information for the source of the printing jobs for the printed matters sectioned by the partition media having the identification numbers are accumulated on the output bin 5 for a preset time or longer.