New patent application published for: FLOW PATH MEMBER, MANUFACTURING METHOD OF FLOW PATH MEMBER, AND LIQUID EJECTION HEAD

A flow path member having: a first substrate having a first flow path; a second substrate having a second flow path and stacked on the first substrate; a film member arranged between the first substrate and the second substrate, in which a plurality of through holes that allow the first flow path and the second flow path to communicate with each other are included; and an adhesive that adheres the first substrate and the film member, wherein a liquid flows from the first flow path to the second flow path via the through holes, wherein an inner wall of the through holes includes a region where a diameter becomes smaller from the first substrate side toward the second substrate side, and wherein at least one through hole among the plurality of through holes is blocked by the adhesive that has entered at least a part of the region.