JPS63153737A - Optical recording medium - Google Patents

Optical recording medium

Info

Publication number
JPS63153737A
JPS63153737A JP61300698A JP30069886A JPS63153737A JP S63153737 A JPS63153737 A JP S63153737A JP 61300698 A JP61300698 A JP 61300698A JP 30069886 A JP30069886 A JP 30069886A JP S63153737 A JPS63153737 A JP S63153737A
Authority
JP
Japan
Prior art keywords
medium
optical recording
temp
alloy
recording medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP61300698A
Other languages
Japanese (ja)
Other versions
JP2615577B2 (en
Inventor
Toshihiko Yoshitomi
Atsushi Sasaki
Toshinari Fujimori
Hiroko Ito
Original Assignee
Mitsubishi Kasei Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP61300698A priority Critical patent/JP2615577B2/en
Publication of JPS63153737A publication Critical patent/JPS63153737A/en
Application granted granted Critical
Publication of JP2615577B2 publication Critical patent/JP2615577B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To make recording by which ≥3 discriminations can be made in one bit by controlling temp. by using an alloy which has ≥3 kinds of different crystal structures according to a thermal change and contains the low melting metal exhibiting different light reflectivities in the respectively crystal states.
CONSTITUTION: Ge and Se metal pieces are disposed on a Te target at ratios of, for example, 85 Te, 10 Ge and 5 Sn to form an optical recording medium alloy by sputtering. The single film exhibits the plural light reflectivities when the temp. of the medium is controlled by projecting a laser beam to such medium 3. The medium which is formed of the alloy contg. such low melting metal, has ≥3 kinds of the different crystal structures including the amorphous structure according to thermal changes and exhibits the different light reflectivities in the respective crystal states is used as the optical recording medium. The multi-value memory medium which permits ≥3 recordings in the single film by controlling the temp. of the medium is thus obtd.
COPYRIGHT: (C)1988,JPO&Japio
JP61300698A 1986-12-17 1986-12-17 Optical recording method Expired - Lifetime JP2615577B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61300698A JP2615577B2 (en) 1986-12-17 1986-12-17 Optical recording method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61300698A JP2615577B2 (en) 1986-12-17 1986-12-17 Optical recording method

Publications (2)

Publication Number Publication Date
JPS63153737A true JPS63153737A (en) 1988-06-27
JP2615577B2 JP2615577B2 (en) 1997-05-28

Family

ID=17888004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61300698A Expired - Lifetime JP2615577B2 (en) 1986-12-17 1986-12-17 Optical recording method

Country Status (1)

Country Link
JP (1) JP2615577B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0432731A2 (en) * 1989-12-11 1991-06-19 Hitachi, Ltd. Information recording medium and information recording and reproducing method and apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS613324A (en) * 1984-06-15 1986-01-09 Matsushita Electric Ind Co Ltd Optical information recording medium
JPS6153034A (en) * 1984-08-24 1986-03-15 Inax Corp Principal-section reinforced resin molded shape and manufacture thereof
JPS61168142A (en) * 1985-01-18 1986-07-29 Fujitsu Ltd Optical recording medium
JPS61219692A (en) * 1985-03-26 1986-09-30 Matsushita Electric Ind Co Ltd Optical information-recording member

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS613324A (en) * 1984-06-15 1986-01-09 Matsushita Electric Ind Co Ltd Optical information recording medium
JPS6153034A (en) * 1984-08-24 1986-03-15 Inax Corp Principal-section reinforced resin molded shape and manufacture thereof
JPS61168142A (en) * 1985-01-18 1986-07-29 Fujitsu Ltd Optical recording medium
JPS61219692A (en) * 1985-03-26 1986-09-30 Matsushita Electric Ind Co Ltd Optical information-recording member

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0432731A2 (en) * 1989-12-11 1991-06-19 Hitachi, Ltd. Information recording medium and information recording and reproducing method and apparatus

Also Published As

Publication number Publication date
JP2615577B2 (en) 1997-05-28

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