| 摘要 |
PURPOSE:To enhance the printing speed in a perfect printing without raising a cost by a method wherein one-side printed paper are inserted into an engine mechanism part by the amount larger than the number of retraction feed paths. CONSTITUTION:Printing is applied on the top surfaces of paper as much as the number of retraction feed paths. After that, in a Fig. B, the fourth paper #4 is fed to the position of a resist roller 15 and applied with printing on the top surface thereof. Meanwhile, the first paper #1 is brought to a stop at the retraction feed path and kept waiting. Thereafter, in a Fig. C, printing is applied on the rear surface of the first paper #1 and, successively, in a Fig. D the fifth paper #5 is fed to the resist position and applied with printing on the top surface thereof. Meanwhile, the second paper #2 is brought to a stop at the retraction feed path and kept waiting. Successively, in Figs. E, F, printing is applied on the rear surface of the second paper #2. In this manner, printing is alternately applied on the top surface of the (n+C)-th paper and the rear surface of the n-th paper, whereby a wasteful time is not generated, and a printing speed in a perfect printing can be maximized. |
