| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device for accurately performing a both-side transfer operation without giving an operational burden to an operator, in the case that many sheets of original are supplied by dividing it. SOLUTION: The odd-numbered original supplied from an automatic document feeding unit 1 is transferred to the surface of a transfer paper fed from a paper feed tray part 13 by a transfer unit 8, and the transfer paper is stocked in an intermediate tray part 11, and the even-numbered original is transferred to the rear side of the transfer paper fed from the intermediate tray part 11, then, the both-side transfer operation is accomplished. Then, when the supplied original comes to an end, an image forming is continued in the case that an original is additionally set before a prescribed stack time is counted by the timer 11a of the intermediate tray part 11, and on the other hand, in the case the original is not additionally set before the time is counted by the timer 11a, the transfer paper stocked in the intermediate tray part 11 is discharged to a paper discharging tray part 12, thus, in the case of setting many sheets of original in the automatic document feeding unit 1 by dividing it, the both-side transfer operation of many sheets of original is accurately and efficiently performed without giving the operational burden to the operator. |
