Patent ID: 6915737

Claim:
An ink supply amount control method for a printing press, characterized by comprising the steps of: supplying ink from a gap between a plurality of ink fountain keys ( 4 ) and an ink fountain roller ( 3 ) to an ink supply path in accordance with rotation of the ink fountain roller; altering a swing operation of an ink ductor roller which is arranged in the ink supply path and swings in synchronism with rotation of printing plate ( 7 ) by preventing at least one swing and permitting at least one swing out of each plurality of potential swings; when a swing operation of the ink ductor roller is prevented, controlling an operation of at least one of the ink fountain key and the ink fountain roller to control an ink supply amount to the ink ductor roller; and supplying ink in a corrected amount to the printing plate attached to a plate cylinder ( 8 ) through the ink supply path by the swing operation of the ink ductor roller.