Method and apparatus for treating a disc substrate

Details Method and apparatus for treating a disc substrate Method and apparatus for treating a disc substrate

2007-01-30

2007-01-30

Heckenberg, Donald (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Utilizing rotary motion of work

C425S404000, C425S445000, C425S810000

Reexamination Certificate

active

11048384

ABSTRACT:
A molded disc substrate obtained by injection molding is rotated at high speed before the molded disc substrate has solidified, and a gas is also made to flow in an outward radial direction along a bottom surface of the molded disc substrate while the molded disc substrate is rotating, and the rotation is stopped after the molded disc substrate has solidified. Thus, a disc substrate with little warping is obtained in a short time.

REFERENCES:
patent: 5006058 (1991-04-01), Maruyama et al.
patent: 5686026 (1997-11-01), Ebina
patent: 5858414 (1999-01-01), Hayashi et al.
patent: 2001/0018093 (2001-08-01), Decre
patent: 3839536 (1989-06-01), None
patent: 58151222 (1983-09-01), None
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patent: 62165731 (1987-07-01), None
patent: 5-109126 (1993-04-01), None
patent: 9-97455 (1997-04-01), None
patent: 9-97456 (1997-04-01), None
patent: 9-138978 (1997-05-01), None
patent: 11-345435 (1999-12-01), None
Computer translsation of JP 05-109126.

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