PURPOSE: To shorten one surface copying time for a both-surface document by successively recording the front pages of plural both-surface documents, tentatively accomodating recording forms having the recording, successively recording the rear pages on different recording forms, and ejecting them in the page order of the front, rear, front, and rear.
CONSTITUTION: A control system for this image forming device is constituted of the control systems of a copying machine 100 and an automatic recycle document feeder (RDH) 102. The latter is composed of an RDH input part 1707 inputting a detecting signal for controlling each timing, etc., and an RDH control part 1709 connected to an RDH driving part 1708 turning on/off a driving motor, etc., automatically carries the document set on a document table to an exposing position, and further, recycles it to the document table. When one surface of the both-surface document is copied, first, the front pages of plural both-surface documents are sequentially recorded, and the recording forms having the recording of the front pages are tentatively housed. Then, the rear pages corresponding to the front pages are recorded on the different recording forms, one by one, and they are successively ejected in the page order of the front, rear, front, and rear.
KUBOTA KAZUNORI
YAMADA KENJI
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