Patent ID: 6557989
Filing Date: 2003-05-06
Classification: B41J

Abstract:
A print head comprising:a print element substrate having a substrate on which an ejection energy generating element for generating thermal energy that is used for ejecting ink is provided, and an ejection opening plate which is provided on the substrate and in which an ejection opening is provided so that the ejection opening faces the ejection energy generating element; and a support member being in contact with the substrate to support said print element substrate, wherein an ink supply path supplies the ink to the ejection opening on said print element substrate, wherein an air chamber that communicates with the ink supply path and includes an air are provided, wherein at least a part of an inner wall of the air chamber is formed with said support member, and wherein a recess is formed in said print element substrate, and said support member and said print element substrate are connected to each other so that the recess forms a space corresponding to the air chamber.