| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a flow passage member suppressing adhesion of a filter to a wall surface while reducing a number of components and being capable of achieving a reduction in size, and further to provide a liquid ejection head and a liquid ejection device.SOLUTION: A flow passage member comprises: a first liquid reserving portion 503 supplied with liquid from a first flow passage 502; a second liquid reserving portion 504 communicating with the first liquid reserving portion 503; a second flow passage 505 having an opening portion 510 opening on a bottom surface 504a of the second liquid reserving portion 504; a filter 216 being provided between the first liquid reserving portion 503 and the second liquid reserving portion 504 and being fixed to an opening edge portion of the second liquid reserving portion 504; a rib 240 provided so as to protrude closer to a first liquid reserving portion side than a surface of a second liquid reserving portion side of the filter 216 of a region fixed with the filter 216 from the bottom surface 504a of the second liquid reserving portion 504. A plurality of second flow passages 505 is provided with respect to one second liquid reserving portion 504, and the rib 240 is provided at least inside a region R1 among a plurality of opening portions 510 in a longitudinal direction L of the filter 216.</p> |
