Patent ID: 6769361
Filing Date: 2004-08-03
Classification: B41F,B41P

Abstract:
A printing machine for controlling an ink feeding rate and a dampening water feeding rate by measuring color density of prints produced, said machine comprising:a plate cylinder; a plate for recording images mounted on said plate cylinder; an ink feeder for feeding ink to said plate; a dampening water feeder for feeding dampening water to said plate; a driving circuit for generating driving signals for driving said ink feeder and said dampening water feeder based on an ink feeding rate and a dampening water feeding rate; and a control unit connected to said driving circuit and configured for controlling said ink feeding rate and said dampening water feeding rate, and acting as a variation prohibitive device for prohibiting, after a variation in one of said ink feeding rate and said dampening water feeding rate, a variation of said driving signals in said ink feeding rate or said dampening water feeding rate for a predetermined waiting period.