Metal deforming – With cutting – By shearing tool-couple
Reexamination Certificate
2007-01-23
2007-01-23
Crane, Daniel C. (Department: 3725)
Metal deforming
With cutting
By shearing tool-couple
C072S339000, C029S890142
Reexamination Certificate
active
10644088
ABSTRACT:
There is disclosed a method of manufacturing a chamber formation plate of a liquid ejection head. The chamber formation plate includes a first region formed with at least recess portions to be pressure generating chambers communicated with nozzles from which liquid droplets are ejected by pressure generated in the pressure generating chambers. A metal plate and a forging die are provided. A reference part is provided on the metal plate. The reference part defines a relative position between the first region and the forging die. At least one deformation absorber is provided at a second region of the metal plate where is between the first region and the reference part. At least one plastic working is performed by the forging die, with respect to the first region to form at least the recess portions, while plastic deformation of the metal plate caused by the plastic working is absorbed by the deformation absorber.
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Akahane Fujio
Hakeda Kazushige
Kurebayashi Akiharu
Takashima Nagamitsu
Uesugi Ryoji
Crane Daniel C.
Seiko Epson Corporation
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