Optical disc

Details Optical disc Optical disc

2005-05-31

2005-05-31

Hess, Bruce H. (Department: 1774)

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

C428S064100, C428S064600, C428S064900, C369S275300, C369S275400

Reexamination Certificate

active

06899937

ABSTRACT:
An optical disc includes a substrate having micro-embossments, in which flat portions referred to as lands, and track guides, referred to as hills, and which protrude from the surfaces of the flat portions are formed. A reflective layer is formed on the substrate, a dielectric layer is formed on the reflective layer, a recording layer is formed on the dielectric layer, and a protective layer is formed on the recording layer. Thus, the lands and hills on the substrate of the optical disc enable disc fabrication to more easily facilitate manufacturing of the optical disc. Accordingly, tracks of the disc can be narrowed, to thereby enhance a recording density of the optical disc.

REFERENCES:
patent: 5016240 (1991-05-01), Strandjord et al.
patent: 5425008 (1995-06-01), Ohta et al.
patent: 5470627 (1995-11-01), Lee et al.
patent: 5776574 (1998-07-01), Honguh et al.
patent: 0 628 958 (1994-12-01), None

Affiliated with

Also associated with

Rating

Optical disc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical disc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3443058