198207 ⎘
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor; Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing organometallic compounds neutral
Write-once type information storage medium (disk structure of recording type information storage medium having structure in which recording layer formed on transparent susbstrate is defined as inside), and information reproducing method or information recording method as well as storage medium manufacturing
#2Dye for optical information recording medium and optical information recording medium
#3Compositions, optical data storage media and methods for using the optical data storage media
#4Write-once type information storage medium (disk structure of recording type information storage medium having structure in which recording layer formed on transparent susbstrate is defined as inside), and information reproducing method or information recording method as well as storage medium manufacturing