| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a recording head, enabling to suppress the occurrence of cracks in a recording element substrate, even if the recording head is erroneously fallen. <P>SOLUTION: The recording head includes: the recording element substrate for ejecting ink and recording; an ink flow passage for supplying ink to the recording element substrate; and a sheet-shaped portion having a rectangular major surface in which the recording element substrate is secured and arranged, wherein a rear surface side of the major surface of the sheet-shaped portion is provided with a space formed separately from the ink flow passage, wherein an opening of the space is formed in a surface adjacent to the major surface, and wherein the sheet-shaped portion has a concave portion formed on the rear surface side of two regions between the recording element substrate and two corner portions arranged on a near side of the opening in the major surface. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
