INK JET RECORDING HEAD AND INK JET RECORDING APPARATUS

摘要

PROBLEM TO BE SOLVED: To achieve high-grade recording without generating warpage or cracking in a substrate on which discharge energy generating elements are arranged when the substrate is bonded to a base plate. SOLUTION: An ink jet recording head consists of a first base plate substrate 1 and a second base plate substrate 2 and the first base plate substrate 1 being in direct contact with a substrate 5 on which discharge energy generating elements are arranged comprises a material having the coefficient of thermal expansion smaller than that of the second base plate substrate 2 and nearer to that of the substrate 5 on which the discharge energy generating elements are arranged. In this case, the first base plate substrate 1 is supported on the second base plate substrate 2 by the rear surface of the discharge energy generating element forming surface and the side surface in the longitudinal direction of the substrate 5.