Patent ID: 6955420

Claim:
A thin plate stacked structure comprising a plurality of thin plates which are stacked with an adhesive, the plurality of thin plates including at least one liquid flow passage thin plate provided with a liquid flow passage having a predetermined pattern formed on at least one surface, the stacked structure further comprising: a release groove which is formed on the liquid flow passage thin plate and which releases the adhesive; an air release hole which is bored through a thin plate stack stacked on the liquid flow passage thin plate, which is communicated with the release groove, and which penetrates in a stacking direction; and an opening which is formed on the thin plate disposed at an outermost layer of the thin plate stack and which allows the air release hole to be open to the outside, wherein: the air release hole has a diameter which is larger than a width of the release groove and which is larger than the opening disposed at the outermost layer.