Patent ID: 6478408
Filing Date: 2002-11-12
Classification: B41J,Y10T

Abstract:
An ink-jet printhead having a hemispherical ink chamber, comprising:a substrate having a manifold for supplying ink, an ink chamber having a substantially hemispherical shape and filled with ink to be ejected, and an ink channel for supplying ink from the manifold to the ink chamber are integrally formed into one body; a nozzle plate having a multi-layered structure, in which a first insulating layer, a thermally conductive layer formed of a thermally conductive material, and a second insulating layer are sequentially stacked, and having a nozzle, through which ink is ejected, formed at a location corresponding to a center of the ink chamber; a nozzle guide having a multi-layered structure and extending from an edge of the nozzle to an interior of the ink chamber; a heater formed on the nozzle plate to surround the nozzle; and an electrode formed on the nozzle plate to be electrically connected to the heater and to supply current to the heater.