Patent ID: 6406135
Filing Date: 2002-06-18
Classification: B41J

Abstract:
An ink jet recording head, comprising:a discharge port for discharging ink; a liquid flow path which communicates with said discharge port and in which a heat energy generating element is disposed for generating heat energy to be utilized for discharging the ink, a common liquid chamber which is disposed for supplying the ink into said liquid flow path as the ink is discharged and which is located on a side of said liquid flow path opposite said discharge port; and an ink supply port for supplying the ink into said common liquid chamber, wherein said common liquid chamber has a convex curved surface inside of said common liquid chamber in a region adjacent to said ink supply port, and wherein a surface opposed to a surface of said liquid flow path which has said energy generating element has a slanted portion, such that a cross-sectional area of said liquid flow path increases in a direction from said discharge port toward said common liquid chamber.