Method and apparatus for controlling ink film thickness

摘要

In an ink film thickness control method, a second ink film thickness distribution, corresponding to an image on an old printing plate, placed on a minimum first ink film thickness distribution formed on the surface of an ink roller group and required during printing, is removed for a predetermined one of printing units thereby leaving the first ink film thickness distribution. Which one of two pre-inking modes is to be performed is set for each printing unit. The minimum first ink film thickness distribution required during printing is formed on the surface of the ink roller group of the printing unit set in the pre-inking I mode after a new printing plate is mounted in the printing unit set in the first pre-inking mode. The second ink film thickness distribution corresponding to the image of the new printing plate is superposed on the first ink film thickness distribution. For the printing unit set in the second pre-inking mode, the second ink film thickness distribution is formed simultaneously on the first ink film thickness distribution which has already been formed. An ink film thickness control apparatus is disclosed as well. <IMAGE>