Patent ID: 6561625
Filing Date: 2003-05-13
Classification: B41J,Y10T

Abstract:
A bubble-jet type ink-jet printhead comprising:a substrate integrally having a manifold for supplying ink, an ink chamber filled with ink to be ejected, and an ink channel for supplying ink from the manifold to the ink chamber; a nozzle plate on the substrate, the nozzle plate having a nozzle through which ink is ejected at a location corresponding to a central portion of the ink chamber; a heater formed on the nozzle plate and centered around the nozzle of the nozzle plate; an electrode, electrically connected to the heater, for applying current to the heater; and an adiabatic layer formed on the heater for preventing heat generated by the heater from being conducted upward from the heater, the adiabatic layer having an interior space that is either maintained in a vacuum state or filled with air.