Optical recording medium and method for making

In an optical recording medium comprising a recording layer on a substrate, the recording layer contains a recording material which consists essentially of A, B, C, MI, and MII wherein A is Ag and/or Au, B is In, C is Te and/or Se, MI is Sb and/or Bi, and MII is at least one element selected from th...

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Bibliographic Details
Main Authors HARATANI; SUSUMU, TOMINAGA; JUNJI, HANDA; TOKUHIKO
Format Patent
LanguageEnglish
Published 23.05.1995
Edition6
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
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Summary:In an optical recording medium comprising a recording layer on a substrate, the recording layer contains a recording material which consists essentially of A, B, C, MI, and MII wherein A is Ag and/or Au, B is In, C is Te and/or Se, MI is Sb and/or Bi, and MII is at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Mn, W and Mo, the atomic ratio of the respective elements being represented by the formula: [(AaBbC1-a-b)xMI1-x]1-yMIIy wherein 0.01</=a<0.50, 0.01</=b<0.50, 0.30</=x</=0.70, and 0.001</=y</=0.20. Information is recorded and erased by exposing the recording layer to a light beam for causing the recording layer to change its crystallographic state. The invention improves C/N and repetitive recording performance at a low linear velocity of the recording layer relative to the light beam and enables reproduction in accordance with the CD standard.
Bibliography:Application Number: US19930074447