| 摘要 |
The disclosure is to provide a digital type duplex printing method of printing images on both sides of a printing material such that a front-side image and a back-side image overlap each other. The digital type duplex printing method performs duplex printing with a digital type printer 10 which includes a print head 11 for performing printing by moving with respect to a printing material 50 and allows a printing jig 20 for setting the printing material 50 to be installed at a predetermined position such that the printing jig can be reversed. The printing material 50 is fixed in a stretched state to the printing jig 20, which is installed at the predetermined position. On the front surface of the printing material 50, a front-side image 31 and a front-side position detection mark 32 are printed. The printing jig 20 is inverted and is installed at the predetermined position. On the back surface of the printing material 50, a back-side position detection mark 42 is printed. The back-side position detection mark 42 and the front-side position detection mark 32 are compared from any one of the front surface and the back surface, and the relative position of the back-side image to the front-side image of the printing material 50 is corrected on the basis of the comparison. A back-side image 41 is printed at the corrected relative position on the back surface of the printing material 50. |
