Abstract: A method of ink level determination for multiple ink chambers includes the steps of determining a first estimated amount of a first ink in a first ink chamber; determining a second estimated amount of a second ink in a second ink chamber; measuring an amount of the second ink contained in the second ink chamber; determining an actual ink loss for the second ink chamber by finding a difference between the amount of the second ink measured in the second ink chamber and the second estimated amount of the second ink in the second ink chamber; and modifying the first estimated amount of the first ink in the first ink chamber using the actual ink loss for the second ink chamber to form a compensated first ink amount.

Abstract: A color registration control system for a printing press including an area scanner for acquiring an image of a paper substrate and an image processing system adapted to receive the image and process the image to determine any color register error.

Abstract: A printing device of the type for printing a strip-like printing article having a printing impression roller which is movable forwards while rotating in one direction and backwards while rotating in the opposite direction, along a line perpendicular to the direction of feeding a strip-like printing article is provided with a slide base which is slidable along rails which extend in a direction perpendicular to the direction of feeding of the printing article. Ink tanks and a roller train are mounted on the slide base. The roller train includes an ink fountain roller, a duct roller whose peripheral surface is in contact with the ink fountain roller, a stationary metallic roller whose peripheral surface is in contact with the duct roller, a first ink distribution roller whose peripheral surface is in contact with the metallic roller, and a second ink distribution roller whose peripheral surface is in contact with the first ink distribution roller.