Patent ID: 9662874
Date: 2017-05-30
CPC Classifications: B41F

Claim:
1. An ink supply method comprising the steps of: cleaning the blanket mounded on the blanket cylinder after an end of a print job including adjusting an amount of ink supplied from an ink fountain to an ink fountain roller by adjusting an opening amount of an ink fountain key, supplying the ink supplied to the ink fountain roller to a printing plate via an ink roller group by a feed operation of an ink ductor roller, and supplying the ink to a blanket which is mounted on a blanket cylinder and used to transfer the ink supplied to the printing plate to a target printing material; calculating the opening amount of the ink fountain key corresponding to an image of a printing plate of a next print job; correcting the calculated opening amount of the ink fountain key with a correction value in consideration of an influence of cleaning of the blanket; and forming, on the ink roller group, a corrected ink film thickness distribution corresponding to the image of the printing plate of the next print job by performing the feed operation of the ink ductor roller a predetermined number of times in a state in which the opening amount of the ink fountain key has been set to the corrected opening amount.