Patent ID: 6164757
Filing Date: 2000-12-26
Classification: B41C,B41J,B41M

Abstract:
A drop-on-demand ink jet printing apparatus for printing proof images on receivers and then producing at least one lithographic ink image on a lithographic printing plate in response to an input image, comprising:a) a computer adapted to receive an input digital image;b) a plurality of ink reservoirs for providing inks of different colors for printing proof images on the receivers and at least one lithographic ink reservoir for producing a lithographic ink image on the lithographic printing plate;c) first print head means coupled to a proof image receiver and responsive to the computer for transferring particular inks onto the proof image receiver for producing proof images; andd) second print head means responsive to the computer for transferring lithographic ink from the lithographic ink reservoir to form an image pattern on the lithographic printing plate.