Patent ID: 8801149

Claim:
A flow path member comprising: a first flow path member which has a first flow path; and a second flow path member which has a second flow path communicating with the first flow path; a wall provided on and protruded from a circumference of the second flow path member, the wall defining a circumferential concave portion in which the first flow path member is fixed with a gap in a circumferential direction between the wall of the second flow path member and a skirt of the first flow path member facing the wall; an injecting portion provided in the circumferential concave portion of the second flow path member, the injection portion having a concave shape communicating with the circumferential concave portion and having a widened gap, which is wider than the gap, in the circumferential direction, and wherein the first flow path member and the second flow path member are welded in the circumferential direction and are adhered by an adhesive outside the welded region in the circumferential concave portion.