Patent ID: 7387352
Filing Date: 2008-06-17
Classification: B41J,B41M

Abstract:
1. A ink jet printing system for optimizing print quality of print media for an ink jet printing system, wherein the ink jet printing system comprises: a. an ink jet printhead drop generator and an orifice plate disposed on the drop generator, wherein the orifice plate has a plurality of nozzles forming a jet array; b. a pulse generator connected to the drop generator and adapted to apply pulses to the drop generator which modulate ink volume per pixel from the drop generator to affect drop size by adjusting drop generator input voltage or drop generator pulse width; c. a corona discharge system having a discharge electrode which forms ionized air that pre-treats the print media to improve wettability of the print media prior to printing with the drop generator, wherein the ionized air contacts with the print media enhancing the wettability of the print media prior to exposing the print media to the drop generator; and d. a controller connected to a power supply for the discharge electrode of the corona discharge system and connected to the pulse generator for the drop generator, and adapted to operate the corona discharge system in tandem with the drop generator, which adjusts ionization intensity of the corona discharge system by controlling power to the discharge electrode, and which modulates the ink volume from the drop generator by controlling the pulses applied from the pulse generator to the drop generator to adjust drop generator input voltage or drop generator pulse width, thereby optimizing print quality by controlling drop spread and ink film thickness on the print media due to adjusted ionization intensity and modulated ink volume.