INK JET CARTRIDGE AND INK JET RECORDER WITH SAME

摘要

PURPOSE:To reduce a stress applied to an orifice plate to prevent deformation or cracks from occurring by bonding a sheet member to any one of three edge areas of the orifice plate member. CONSTITUTION:A bonded body of a heater board 1 with a top plate 4 is supported by a metallic substrate 3 as well as supported by a case of an ink supply member 6 for supplying an ink to an ink path 7. A front surface seal plate 10, which is bonded to the substrate 3 and the case of the ink supply member 6 so as to buffer a step part formed between the bonded body and the case of the ink supply member or between the substrate 3 and an orifice plate 4a, is mounted so as to press a part of the periphery of the orifice plate 4a. The front surface seal plate 10 is provided with an opening. The opening is shaped so that the front seal plate 10 can press a bonding part of the orifice plate 4a with the heater board 1 and a part of the side face of the orifice plate 4a on the side of the bonding part thereof with the heater board 1 but has no possibility of pressing the other part.