| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid droplet ejection head which secures bonding strength needed between a diaphragm and a channel member and is controlled in outflow of the adhesive used for joining.SOLUTION: In a liquid droplet ejection head 5 that is formed by including and being layered with at least: a nozzle plate 3 that forms a nozzle 4 to eject a droplet; a channel member 1 that forms a pressurized liquid chamber 6 to which the nozzle 4 communicates; and a diaphragm 2 that forms one surface in the pressurized liquid chamber 6, in this order, a faying surface of the channel member 1 and the diaphragm 2 are connected by an adhesive, and the diaphragm 2 has a layered structure in which the number of lamination layers is varied at different locations. The liquid drop ejecting head has a filter part 9 in which a plurality of filter holes are formed in an opening 7 that can supply the liquid to the pressurized chamber 6, wherein a sidewall 1a that touches or is adjacent to the filter part 9 and a thick-walled part 20 containing the largest number of lamination layers of the diaphragm 2 that do not overlap with each other in a laminating direction. |
