Pressing method, method of manufacturing punching plate, punching plate, and liquid ejecting head

A punching plate that has a first face and a second face that is opposite to the first face, comprising:

• a depressed portion, which is curved toward a direction in which a through hole is punched to sink downward in the form of funnel as it approaches a periphery of the through hole and which is formed at a peripheral portion around the through hole that is formed in the target plate material in such a manner that the peripheral portion around the through hole in the target plate material is pushed in toward a deeper side in a thickness direction of a base, when the target plate material is punched with the punch in such an orientation that the first face of the target plate material is in contact with the base that is made of an elastic material, against an elastic force of the base and are deformed.

A method of manufacturing a punching plate that is obtained by forming through holes using a punch in a target plate material that has a first face and a second face that is opposite to the first face, comprising:

• when the target plate material is punched with the punch from the second face in such an orientation that the first face of the target plate material and at least a region in which the through holes are formed is in contact with a base, forming depressed portions, which are curved toward a direction in which the through holes are punched to sink downward in the form of funnel as they approach peripheries of the through holes, at peripheral portions around the through holes that are formed in the target plate material in such a manner that the peripheral portions around the through holes in the target plate material are pushed in toward a deeper side in a thickness direction of the base and are deformed.