Solvents removed by suction in lithographic printing

摘要

In lithographic printing, an image based on signals of image data is directly formed on a plate material 9 mounted on the plate cylinder 11 of a printing machine by an ink-jet recording head 2 from which an oil-based ink is ejected utilising an electrostatic field. Suction is applied to the under side of the plate material during the image formation to remove the solvent from the ink. The plate material can be permeable to air and a suction unit (not shown) can suck air and solvent from the interior of plate cylinder 11.