Patent ID: 7207661
Filing Date: 2007-04-24
Classification: B41J

Abstract:
1. An ink-jet print head with a chamber sidewall heating mechanism, the print head comprising: a substrate; an insulation layer on the substrate; a heating unit on the insulation layer, the heating unit having a plurality of ink chambers, a main channel penetrating through the substrate and the insulation layer, and a plurality of V-shaped micro-channels, each of the V-shaped micro-channels having a diverging end linking with the main channel, and a converging end linking with the ink chambers; and a nozzle plate with a plurality of orifices on the ink chambers, wherein the ink chambers have sidewalls formed with a plurality of heater structures, respectively, to evaporate the ink in the ink chambers so as to form a plurality of bubbles, which pushes the ink in the ink chambers to eject from the orifices in an ejecting direction substantially perpendicular to a direction from the diverging end to the converting end, respectively.