JPS57120243A - Optical information carrier disk and its manufacture - Google Patents

Optical information carrier disk and its manufacture

Info

Publication number
JPS57120243A
JPS57120243A JP56004233A JP423381A JPS57120243A JP S57120243 A JPS57120243 A JP S57120243A JP 56004233 A JP56004233 A JP 56004233A JP 423381 A JP423381 A JP 423381A JP S57120243 A JPS57120243 A JP S57120243A
Authority
JP
Japan
Prior art keywords
base materials
disk base
materials
disk
manufacture
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
JP56004233A
Other languages
Japanese (ja)
Other versions
JPH0243257B2 (en
Inventor
Masami Uchida
Matsuki Baba
Nobuo Akahira
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56004233A priority Critical patent/JPS57120243A/en
Publication of JPS57120243A publication Critical patent/JPS57120243A/en
Publication of JPH0243257B2 publication Critical patent/JPH0243257B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Optical Record Carriers (AREA)

Abstract

PURPOSE:To reduce curvature and strain by joining a couple of disk base materials together while interposing spacers made of materials, which has the same coefficient of thermal expansion and coefficient of hygroscopic thermal expansion with the disk base materials, at its inner and outer circumferential parts. CONSTITUTION:Cast acrylic materials are used for disk base materials 7 and while a couple of disk base materials 7 are set with optical recording layers 9 in, the center holes 8 of the disk base materials 7 are aligned to the center hole 8 of an inner circumferential spacer 14 made of the same cast acrylic with the disk materials 7. Further the outside of the disk base materials 7 and that of the outer circumferential spacer 13 made of the same material with the disk base material are aligned to each other, thus joining both the base materials together with a ultraviolet-curing adhesive with excellent operability while the joint surface has less setting contraction.
JP56004233A 1981-01-14 1981-01-14 Optical information carrier disk and its manufacture Granted JPS57120243A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56004233A JPS57120243A (en) 1981-01-14 1981-01-14 Optical information carrier disk and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56004233A JPS57120243A (en) 1981-01-14 1981-01-14 Optical information carrier disk and its manufacture

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP59105058A Division JPS605439A (en) 1984-05-23 1984-05-23 Disc for optical information carrier

Publications (2)

Publication Number Publication Date
JPS57120243A true JPS57120243A (en) 1982-07-27
JPH0243257B2 JPH0243257B2 (en) 1990-09-27

Family

ID=11578838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56004233A Granted JPS57120243A (en) 1981-01-14 1981-01-14 Optical information carrier disk and its manufacture

Country Status (1)

Country Link
JP (1) JPS57120243A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58143446A (en) * 1982-02-22 1983-08-26 Hitachi Ltd Information recording medium
JPS6020333A (en) * 1983-07-14 1985-02-01 Matsushita Electric Ind Co Ltd Disk for recording and reproducing optical information
JPS60113344A (en) * 1983-11-24 1985-06-19 Hoya Corp Optical information recording medium
US4877667A (en) * 1986-07-22 1989-10-31 Mitsubishi Denki Kabushiki Kaisha Optical disc with inhibited thermal distortion
KR100605375B1 (en) 2004-11-17 2006-07-31 한국전자통신연구원 Disk for storing data

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5683851A (en) * 1979-12-12 1981-07-08 Toshiba Corp Optical recording material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5683851A (en) * 1979-12-12 1981-07-08 Toshiba Corp Optical recording material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58143446A (en) * 1982-02-22 1983-08-26 Hitachi Ltd Information recording medium
JPS6020333A (en) * 1983-07-14 1985-02-01 Matsushita Electric Ind Co Ltd Disk for recording and reproducing optical information
JPS60113344A (en) * 1983-11-24 1985-06-19 Hoya Corp Optical information recording medium
JPH0322659B2 (en) * 1983-11-24 1991-03-27 Hoya Corp
US4877667A (en) * 1986-07-22 1989-10-31 Mitsubishi Denki Kabushiki Kaisha Optical disc with inhibited thermal distortion
KR100605375B1 (en) 2004-11-17 2006-07-31 한국전자통신연구원 Disk for storing data

Also Published As

Publication number Publication date
JPH0243257B2 (en) 1990-09-27

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