Patent ID: 6439690
Filing Date: 2002-08-27
Classification: B41J

Abstract:
An element substrate for an ink jet recording head which effects recording by ejecting an ink from a plurality of nozzles, said substrate comprising:a plurality of heat generating resistor elements, provided on an insulative layer, for ejecting the ink, said plurality of heat generating resistor elements being provided for each of said nozzles; a first wiring which is connected between each of said plurality of heat generating resistor elements and a common line through a through-hole formed in said insulative layer, wherein the common line applies a voltage commonly to said heat generating resistor elements for the plurality of nozzles; and a second wiring which is electrically connected to each of said heat generating resistor elements and associated ones of a plurality of driving elements for driving the heat generating resistor elements independently from each other, wherein said heat generating resistor elements are disposed between said common line and said driving elements on the substrate, and wherein said first wiring, said heat generating resistors and said second wiring are disposed in this order on said element substrate.