发明名称 |
Method of working small recess portion, method of fabricating liquid ejection head and liquid ejection head |
摘要 |
The invention is directed to a method of working a small recess portion. In the method, prior to press-forming small recess portions arrayed in a row by pressing a predetermined number of pieces of aligned male dies to a metal base plate, the metal base plate is previously formed with a highly rigid portion at a predetermined portion at a vicinity of an imaginary line extending in a row direction along end portions of predicted press portions to which the respective male dies are pressed.
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申请公布号 |
US2006055732(A1) |
申请公布日期 |
2006.03.16 |
申请号 |
US20050225052 |
申请日期 |
2005.09.14 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
OGAWA HIDEYUKI;SAITO KOICHI;TAKASHIMA NAGAMITSU;ONO KATSUNORI |
分类号 |
B41J2/04;B21D53/76;B41J2/16 |
主分类号 |
B41J2/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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