INKJET CTP METHOD FOR PREPARING A SET OF LITHOGRAPHIC PRINTING PLATES

摘要

A method of preparing a first and second lithographic printing plate for lithographic printing of a colour digital image on a receiver wherein the colour digital image comprises a plurality of colorant separations; comprising the steps: jetting droplets by an inkjet CTP system on a first lithographic support for the first lithographic printing plate thereby forming a printing area of a first lithographic image which represents a first colorant separation of the plurality of colorant separations; and jetting droplets by the inkjet CTP system on a second lithographic support for the second lithographic printing plate thereby forming a printing area of a second lithographic image which represents a second colorant separation of the plurality of colorant separations; and wherein the method of preparing a first and second lithographic printing plates is characterized by forming a part of or whole the first and second lithographic image in a print pass by the inkjet CTP system.