| 摘要 |
A copier for producing a set of duplex copies from a set of simplex originals in which the copy set has subsets in which the first page of each subset is on the front side of a copy. The copier includes an image-producing section for producing images of originals at an exposure position; a circulating feeder for receiving a set of simplex originals at a receiving position and for sequentially circulating individual originals from the receiving position to the exposure position of the producing section and then back to the receiving position. A supply of copy sheets is provided to selectively supply copy sheets to the producing section to receive images on both sides thereof. The copier includes a logic and control unit operable in a setup mode for controlling the circulating feeder to circulate originals one at a time under operator control. An operator actuable switch is provided to designate individual simplex originals which are to be the first pages of subsets of duplex copies. The control unit also is operable in a producing mode for controlling the circulating feeder to circulate the simplex originals to the exposure position; for controlling the producing section to produce sequential images of the original; and for controlling the copy sheet supply to supply to the producing section copy sheets to receive images of simplex originals on the front and back sides of copy sheets with the designated first page of each subset being received on the front side of a copy sheet.
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