| 摘要 |
PURPOSE:To automatically adjust the film thickness of the ink supplied to an ink fountain roll in the same opening degree quantity of all of the automatic opening and closing ink keys of the ink automatic opening and closing device mounted on the ink supply device of a printing press to the same predetermined film thickness. CONSTITUTION:The ink key opening degree value correcting device of a printing optical type, electric wave type and color density detection type film thickness detection parts 9,14 detecting the film thickness of the ink supplied to the ink fountain roll 3 controlled by the opening and closing operation of ink keys, a detected film thickness output part 20 operating the film thickness value of the ink on the basis of the film thickness detection signals of the film thickness detection parts 9,14 and an opening degree value correcting part 70 operated so as to appropriately open and close the ink keys and correcting the opening degree value of each of the ink keys to a predetermined opening degree value A% at the point of time when the film thickness of the ink supplied to the ink fountain roll is adjusted to a predetermined film thickness value are provided. |
