Optical disk and method for manufacturing disk substrate for...

Details Optical disk and method for manufacturing disk substrate for... Optical disk and method for manufacturing disk substrate for...

2006-02-07

2006-02-07

Mulvaney, Elizabeth (Department: 1774)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064400, C428S065200, C430S270110

Reexamination Certificate

active

06994900

ABSTRACT:
To improve a bad appearance due to an interconnection between a pair of disk substrates (20, 30) which are bonded with annular grooves (25, 35) being opposed to each other by a simple structure and at a low cost, which have annular grooves (25, 35) near their center openings (15), an outer groove end (26) of the annular groove (25) of one disk substrate (20) in the radial direction is registered in position with an outer end (36) of the annular groove (35) of the other disk substrate (30) and inner groove ends (27, 37) of the annular grooves in the radial direction are located in different positions. The annular grooves have different groove widths A, B.

REFERENCES:
patent: 5618634 (1997-04-01), Hosoda et al.
patent: 5827593 (1998-10-01), Maruyama et al.
patent: 6169721 (2001-01-01), Takishita et al.
patent: 6815029 (2004-11-01), Kawaguchi et al.
patent: 09-223333 (1997-08-01), None
patent: 10-296797 (1998-11-01), None
patent: 11-120618 (1999-04-01), None
patent: 2000-242974 (2000-09-01), None

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