Dynamic information storage or retrieval – Storage medium structure – Specified center hole or locating structure
Patent
1993-01-25
1994-09-06
Dzierzynski, Paul M.
Dynamic information storage or retrieval
Storage medium structure
Specified center hole or locating structure
369283, 369280, 428694R, G11B 726, G11B 1116
Patent
active
053454367
ABSTRACT:
The present invention discloses a disc having an information signal surface on which a replica of information signals is formed by a stamper provided in a metal mold, and a manufacturing method of the disc. The disc includes a disc substrate having a generally flat surface on which the replica of the information signal is formed, a center through hole formed at a center thereof and a ring groove inevitably formed as an inverted replica by a shape of a collar of a retainer which is provided in the metal mold to support the stamper. The ring groove concentrically divides the generally flat surface into inner and outer surfaces. A reflecting layer is provided on the generally flat surface for reflecting reading light from a reproducing apparatus. Further, a protecting layer is provided on the reflecting layer for protecting the reflecting layer. Resin is filled in the ring groove for causing the inner and the outer flat surface to be bridged and flush each other for printing a label at a desired area of the inner and the outer surfaces without being interrupted by the ring groove.
REFERENCES:
patent: 4747093 (1988-05-01), Benne et al.
patent: 4941066 (1990-07-01), Swinburne et al.
patent: 5089358 (1992-02-01), Taki et al.
patent: 5217850 (1993-06-01), Fujii et al.
Chu Kim-Kwok
Dzierzynski Paul M.
Meller Michael N.
Victor Company of Japan Ltd.
LandOfFree
Recording medium of flat surface with resin filled ring grove does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recording medium of flat surface with resin filled ring grove, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording medium of flat surface with resin filled ring grove will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1334338