Stamper and method for production thereof
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United States of America Patent
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Dec 15, 2009
Grant Date -
Aug 24, 2006
app pub date -
Apr 7, 2004
filing date -
Apr 18, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a stamper used for an injection molding of a resin material and a manufacturing method thereof. It is provided with such stamper as being excellent in durability in use without causing corrosion at a portion contacting with the resin material, wherein an anti-corrosion film made of any one of alloy selected from a nickel alloy, a silver alloy or a copper alloy is formed on a surface of the stamper contacting with the resin material. Further, it is provided with a method comprising steps of: forming anti-corrosion film on the surface of a mold for manufacturing the stamper; forming the stamper on the anti-corrosion film; and separating the stamper and the anti-corrosion film in a body from the mold.
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