Metal working – Method of mechanical manufacture – Shaping one-piece blank by removing material
Reexamination Certificate
2005-12-30
2010-10-19
Omgba, Essama (Department: 3726)
Metal working
Method of mechanical manufacture
Shaping one-piece blank by removing material
C029S558000, C029S412000
Reexamination Certificate
active
07814640
ABSTRACT:
In order to manufacture a die for forming recesses in a metallic plate which are adapted to be pressure generating chambers in a liquid ejecting head, it is prepared a metallic block adapted to allow a plurality of dies arrayed in a first direction to be cut out, and having a flat end face extending in the first direction. The dies are cut out from the metallic block. A distance between a first part of each of the dies which is adapted to be working members for forming the recesses and the flat end face is made uniform.
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Takashima Nagamitsu
Uesugi Ryoji
Omgba Essama
Seiko Epson Corporation
Sughrue & Mion, PLLC
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