Patent ID: 6578956
Filing Date: 2003-06-17
Classification: B41J

Abstract:
An ink jet recording head comprising a discharge port forming member, an ink supply member for supplying ink to said discharge port forming member from an ink container, an ink discharge port formed by said discharge port forming member, and discharge pressure generation means for generating a discharge pressure for discharging ink from said discharge port, in which a discharge port forming face of said discharge port forming member and a face of said ink supply member are substantially coplanarly connected and a protective member is adhered over both faces,wherein the adhering area of the protective member per unit area of said ink supply member is smaller than that on said discharge port forming face, and wherein the adhering area of the protective member per unit area on said ink supply member does not exceed 30% of the adhering area of the protective member per unit area on said discharge port forming face.