OPTICAL DISC MEDIUM

An erasable optical disc medium on which information is recorded and read by using a laser beam, which comprises (i) a phase transition type information recording layer (2), (ii) an optical interference layer (3) and (iii) an optical reflection layer (4), formed in this order on a transparent substr...

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Hauptverfasser: NAGAAKI KOSHINO, KENICHI UCHIUMI, YASUYUKI GOTO
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creator NAGAAKI KOSHINO
KENICHI UCHIUMI
YASUYUKI GOTO
description An erasable optical disc medium on which information is recorded and read by using a laser beam, which comprises (i) a phase transition type information recording layer (2), (ii) an optical interference layer (3) and (iii) an optical reflection layer (4), formed in this order on a transparent substrate (1), in such a state that a reflectance of the medium is higher before information is recorded and a reflectance of the recorded portions of the medium is lower after recording. The erasable optical disc medium may be used in place of a standard CD medium, e.g. in a CD-ROM drive.
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subjects COLOUR PRINTING
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
LINING MACHINES
PERFORMING OPERATIONS
PHYSICS
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
STAMPS
TRANSPORTING
TYPEWRITERS
title OPTICAL DISC MEDIUM
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