High-density recording medium and recording and/or...

Details High-density recording medium and recording and/or... High-density recording medium and recording and/or...

2009-09-24

2010-11-09

Miller, Brian E (Department: 2627)

Dynamic optical information storage or retrieval

Optical storage medium structure

Disk protection

C369S280000

Reexamination Certificate

active

07831986

ABSTRACT:
A high-density recording medium including a first surface and a second surface, the second surface being a light incident surface at a normal mounting condition, a clamping area, an information area including a recording layer provided adjacent to the second surface, a transition area extending between the clamping area and the information area, the transition area being defined from an end position of the clamping area to a beginning of the information area, and a slope being formed in the transition area on the first surface. Further, the slope is formed from the end position of the clamping area to a position placed at least a predetermined distance ahead of the start position of the information area, and a gap as a non-slanted area extends between the information area and a closer end of the slope thereto.

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