| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device capable of keeping the productivity when printing is done on both faces without relying on paper supply steps of transfer paper. SOLUTION: In this image forming device having a first paper supply tray 1a, a second paper supply tray 1b, a third paper supply tray 1c, a fourth paper supply tray 1d, a reverse rotation roller 31 rotating reversely transfer paper on which a picture image is transferred on one face thereof to transfer the picture image onto the other face of the transfer paper on which the picture image is transferred on one face in a write part, and a reverse rotation conveyance passage feeding the transfer paper reversed by the reverse rotation roller 31 into the write part again, it controls such that new transfer paper is supplied into the write part following the transfer paper in the reverse rotation conveyance passage when paper supply of the new transfer paper to be supplied next during the conveyance of the transfer paper in the reverse rotation conveyance passage is done from either of the first, second, third, and fourth paper supply trays 1a, 1b, 1c, 1d. |
