| 摘要 |
In an ink film thickness control method for a multi-color printing press having a plurality of printing units for continuously performing designated color printing on a printing paper by means of ink supplied to a printing plate through an ink roller group, when in at least two of the printing units as plate exchange printing units, exchange to new printing plates are simultaneously performed, the number of printing papers to be printed for ink removing is set in units of plate exchange printing units. The ink feed operation in each plate exchange printing unit is turned off. Printing for ink removing is performed in each plate exchange printing unit on the basis of the set number of printing papers while keeping the previous printing plate mounted, thereby forming a first ink film thickness distribution minimum and necessary for printing on the ink roller group of the plate exchange printing unit. An ink film thickness control apparatus is also disclosed.
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