Patent ID: 11884072
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. The liquid discharge head according to claim 1,
wherein the flow passage substrate includes a first plate which has the surface and a second plate which is stacked on a back surface of the first plate on a side opposite to the surface,
the second groove is formed by a through-hole which is formed through the first plate,
a plurality of second grooves including the second groove are arranged on the surface while being separated from each other in the intersecting direction,
a plurality of first connecting grooves, which are formed by a plurality of recesses, are further formed on the surface, and
each of the first connecting grooves connects two of the second grooves which are adjacent to one another in the intersecting direction.