Patent ID: 9205641
Filing Date: 2015-12-08
Classification: B41F,B41P

Abstract:
1. An ink film thickness distribution correction method in an ink supply apparatus including an ink fountain storing an ink, a plurality of ink fountain keys arranged in the ink fountain, an ink fountain roller to which the ink is supplied from the ink fountain in accordance with opening ratios of the plurality of ink fountain keys, an ink ductor roller to which the ink is transferred from the ink fountain roller by an ink feed operation, and an ink roller group including at least one ink form roller which receives the ink transferred to the ink ductor roller and supplies the ink to a printing plate, comprising the steps of: performing a throw-off operation of the ink form roller positioned at an end of the ink roller group during test printing or final printing; stopping the ink feed operation of the ink ductor roller during test printing or final printing; dividing the ink roller group into a plurality of roller subgroups during test printing or final printing; and scraping and removing the ink in some roller subgroups out of the divided roller subgroups by an ink scraping member.