Optical data recording medium and manufacturing method thereof

Details Optical data recording medium and manufacturing method thereof Optical data recording medium and manufacturing method thereof

1996-07-05

1999-05-18

Evans, Elizabeth

Stock material or miscellaneous articles

Circular sheet or circular blank

428 644, 428 648, 428913, 43027014, 4304951, 430945, 3692754, 369283, 369288, B32B3/00

Patent

active

059049693

ABSTRACT:
A desired writable optical data recording medium has a transparent substrate 1 where a side wall of a recess is connected to a land surface by a curved surface. A data recording portion of a dye material may be placed only in recesses of a pre-formatted pattern on a transparent substrate, and a reflective layer may be formed on the data recording portion and on the exposed land area between neighboring recesses. The medium can show reflectivity of not less than 65% on reproduction and reduce the cost for manufacturing thereof.

REFERENCES:
patent: 5009818 (1991-04-01), Arai et al.
patent: 5021276 (1991-06-01), Kamezaki et al.
patent: 5353277 (1994-10-01), Yasuda et al.
patent: 5591501 (1997-01-01), Ovshinsky et al.

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