| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device capable of preparing secret documents on which images do not disappear even when the documents are preserved for a long period of time. SOLUTION: In an image forming device (laser beam printer) 1 in which a toner image is fixed by heat on a transfer material S1, in a fixing device 21, after the toner image is formed on the transfer material S1, in order for the toner image on the transfer material S1, which is passed through the fixing device 21, to contact the fixing device, the transfer material S1 is folded with the image face facing inwardly, and the folded transfer material S1 is allowed to pass through the fixing device 21 again. |
