Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – For extrusion or injection type shaping means
Reexamination Certificate
2006-05-16
2006-05-16
Heckenberg, Donald (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
With apparatus assembly or dismantling means or with idle part
For extrusion or injection type shaping means
C425S542000, C425S810000
Reexamination Certificate
active
07044726
ABSTRACT:
There is provided a mold component which makes it possible to mold a substrate for an optical recording medium which enables a functional layer having a uniform thickness to be formed thereon without using a resin-coating assisting member. A stamper holder holds a stamper thereon, and has a generally hollow cylindrical shape. An insertion hole formed through a central portion of the stamper has a diameter which is larger than an outer diameter of a cavity-side end of the stamper holder at a higher temperature of the holder than a normal temperature, and is slightly smaller than the outer diameter at the normal temperature of the holder. The cavity-side end inserted into the insertion hole at the higher temperature of the stamper is grasped by a rim of the insertion hole which is reduced in diameter at the normal temperature of the stamper.
REFERENCES:
patent: 5466145 (1995-11-01), Takahashi
patent: 9-123229 (1997-05-01), None
patent: 9-193206 (1997-07-01), None
patent: 2003-11169 (2003-01-01), None
English Language Abstract of JP 9-193206.
English Language Abstract of JP 2003-11169.
English Language Abstract of JP 9-123229.
Domon Mikio
Koyama Atsushi
Suzawa Kazuki
Usami Mamoru
Yamaga Kenji
Greenblum & Bernstein P.L.C.
Heckenberg Donald
TDK Corporation
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