Patent ID: 8218994

Claim:
An image forming apparatus comprising an image forming portion that synthetically prints image data and ID image data specific to a user on a recording paper, a plurality of paper discharging portions that discharges and accumulates the recording papers having the image data and the ID image data synthetically printed by the image forming portion, and an reading portion that reads the ID images of the recording papers accumulated in the paper discharging portions, the image forming apparatus notifying an external device specified by a user corresponding to the ID image read by the reading portion that the recording papers in the paper discharging portion must be removed, the apparatus comprising: an output condition setting portion that sets output conditions of the recording papers, the image forming portion printing the image data on a recording paper and the ID image data on an edge of the recording paper in accordance with the output conditions set by the output condition setting portion, the reading portion reading the ID images at the edges of the recording papers while the recording papers are accumulated in the paper discharging portion.