Forging punch, method of manufacturing liquid ejection head...

Details Forging punch, method of manufacturing liquid ejection head... Forging punch, method of manufacturing liquid ejection head...

2011-03-15

2011-03-15

Hwu, Davis (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Flow deflecting or rotation controlling means

Deflector and terminal flow element

C239S102200

Reexamination Certificate

active

07905431

ABSTRACT:
A male die for forming a member incorporated in a liquid ejection head is disclosed. Each of a plurality of first forging punches is operable to form a first recess on a metal plate. The first forging punches are arranged at a fixed pitch to form a punch row in a first direction. Each of a plurality of second forging punches is operable to form a second recess on the metal plate. The second forging punches are arranged adjacently to first forging punches located at both ends of the punch row. The first recess is to be a first part of the member which is used to eject liquid from the liquid ejection head, and the second recess is to be a second part of the member which is not used to eject liquid.

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