JPS57172543A - Information storage medium - Google Patents

Information storage medium

Info

Publication number
JPS57172543A
JPS57172543A JP56057551A JP5755181A JPS57172543A JP S57172543 A JPS57172543 A JP S57172543A JP 56057551 A JP56057551 A JP 56057551A JP 5755181 A JP5755181 A JP 5755181A JP S57172543 A JPS57172543 A JP S57172543A
Authority
JP
Japan
Prior art keywords
storage medium
information storage
information
layer
substrates
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.)
Pending
Application number
JP56057551A
Other languages
Japanese (ja)
Inventor
Hideo Ando
Toshiharu Nakagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56057551A priority Critical patent/JPS57172543A/en
Publication of JPS57172543A publication Critical patent/JPS57172543A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

Abstract

PURPOSE:To prevent strain generated in a heat cycle by using an adhesive of the same material with a plastic substrate for sticking two plastic substrates which each have an information-formed layer. CONSTITUTION:On one surface of a substrate 1 formed of a transparent acrvlic sheet having, e.g. 1.5mm. thickness, an information-formed layer 2 made of a recording layer or light reflective layer of Te or Al is vapor-deposited to 500Angstrom thickness. Those two substrates are stuck together by using an adhesive obtained by adding a polymerization initiator and accelerator to a prepolymer of methyl methacrylate when the plastic substrates 1 are made of acrylic materials. Thus, the strain of the information storage medium 4 is prevented from occurring in a heat cycle.
JP56057551A 1981-04-16 1981-04-16 Information storage medium Pending JPS57172543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56057551A JPS57172543A (en) 1981-04-16 1981-04-16 Information storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56057551A JPS57172543A (en) 1981-04-16 1981-04-16 Information storage medium

Publications (1)

Publication Number Publication Date
JPS57172543A true JPS57172543A (en) 1982-10-23

Family

ID=13058926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56057551A Pending JPS57172543A (en) 1981-04-16 1981-04-16 Information storage medium

Country Status (1)

Country Link
JP (1) JPS57172543A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61131249A (en) * 1984-11-30 1986-06-18 Hitachi Ltd Double-faced optical information recording medium
US4877667A (en) * 1986-07-22 1989-10-31 Mitsubishi Denki Kabushiki Kaisha Optical disc with inhibited thermal distortion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61131249A (en) * 1984-11-30 1986-06-18 Hitachi Ltd Double-faced optical information recording medium
US4877667A (en) * 1986-07-22 1989-10-31 Mitsubishi Denki Kabushiki Kaisha Optical disc with inhibited thermal distortion

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