RECORDING ELEMENT UNIT, INK JET RECORDING ELEMENT UNIT, INK JET CARTRIDGE, AND INK JET RECORDING APPARATUS

摘要

PROBLEM TO BE SOLVED: To ensure a space of signal wiring at the time of the production of a high density ink jet recording element unit. SOLUTION: When an ink jet recording element unit is produced by arranging a large number of recording elements each constituted of an individual electrode 102, an electrothermal converter 106, a common electrode 103 and a folded electrode 9 on a substrate 100, a notch part 110 is formed to the outside edge part of the electrothermal converter 106 adjacent to the folded electrode 109.