Patent ID: 11885426
Assignee: SEIKO EPSON CORPORATION
Field: Other special machines (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 2:
3. A liquid flow path member comprising:
a first flow path member constituting one side of a liquid flow path;
a second flow path member constituting another side of the liquid flow path; and
a check valve including a valve body configured to stop a backflow of the liquid in the liquid flow path and a check valve holding member configured to hold the valve body, wherein
the first flow path member and the check valve holding member are formed of a laser light absorbing material,
the second flow path member is formed of a laser light transmissive material, and
the first flow path member and the second flow path member are welded together, and the second flow path member and the check valve holding member are welded together.