Optical information medium and making method

Details Optical information medium and making method Optical information medium and making method

2005-05-24

2005-05-24

Cao, Allen (Department: 2652)

Dynamic optical information storage or retrieval

Optical storage medium structure

Disk hub

C369S283000

Reexamination Certificate

active

06898796

ABSTRACT:
An optical information medium includes a disk-shaped substrate (100) having a center hole (101), an annular information recording area thereon, and an annular resin-based light-transmitting layer (102) thereon by which recording/reading laser beam is transmitted to the information recording area. The light-transmitting layer (102) terminates at a radially inner periphery which forms an annular raised rim (6). The rim is effective for protecting the light-transmitting layer from damages and dust adhesion, and when a plurality of such media are stacked, preventing the media from intimate contact.

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