EP0574025

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...

Full description

Saved in:
Bibliographic Details
Main Authors HANDA, TOKUHIKO, TOMINAGA, JUNJI, HARATANI, SUSUMU
Format Patent
LanguageEnglish
Published 19.01.1994
Edition5
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
Online AccessGet full text

Cover

More Information
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: EP19930109470