INK JET RECORDING HEAD, MANUFACTURE THEREOF AND INK JET RECORDER

摘要

PROBLEM TO BE SOLVED: To enhance productivity of ink jet recording head. SOLUTION: The liquid channel 7 of an ink jet recording head has first and second straight parts 21, 22 of different channel width. An ejection opening 20 having an opening area determined by the channel width of the first straight part 21 is formed by cutting the first straight part 21 and forming an orifice face 9. On the other hand, an ejection opening 20 having an opening area larger than that of the first straight part 21 is formed by cutting the second straight part 22 and forming an orifice face 9.