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JPS57138064A - Optical disc medium - Google Patents

Optical disc medium

Info

Publication number
JPS57138064A
JPS57138064A JP56020218A JP2021881A JPS57138064A JP S57138064 A JPS57138064 A JP S57138064A JP 56020218 A JP56020218 A JP 56020218A JP 2021881 A JP2021881 A JP 2021881A JP S57138064 A JPS57138064 A JP S57138064A
Authority
JP
Japan
Prior art keywords
spacer
unevenness
adhesives
increased
base
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
JP56020218A
Other languages
Japanese (ja)
Inventor
Yasuyuki Goto
Seiya Ogawa
Nagaaki Etsuno
Hironori Goto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56020218A priority Critical patent/JPS57138064A/en
Publication of JPS57138064A publication Critical patent/JPS57138064A/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

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To prevent deformation of a disc due to excessive adhesives by increasing the strength of adhesion through the increased bonding surface, by forming microscopic unevenness at least on one surface of bonding surfaces between a base and a spacer. CONSTITUTION:A base 1 such as transparent plastic is opposed to a recording layer 2 of a metallic film such as Se taken inside and they are bonded by clipping a spacer 6. In this case, triangle or square unevenness 7 or 8 is formed on the surfaces up and under the spacer 6, and the size of unevenness is microscopic. With this constitution, an adhesives 9 is given to the unevenness part of the spacer 6 and excessive adhesives is scraped off and the spacer is bonded on the base 1. Thus, the bonding surface is increased, the bonding strength is increased and the generation of deformation of an optical disc due to excessive adhesives can be prevented.
JP56020218A 1981-02-16 1981-02-16 Optical disc medium Pending JPS57138064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56020218A JPS57138064A (en) 1981-02-16 1981-02-16 Optical disc medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56020218A JPS57138064A (en) 1981-02-16 1981-02-16 Optical disc medium

Publications (1)

Publication Number Publication Date
JPS57138064A true JPS57138064A (en) 1982-08-26

Family

ID=12021016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56020218A Pending JPS57138064A (en) 1981-02-16 1981-02-16 Optical disc medium

Country Status (1)

Country Link
JP (1) JPS57138064A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6055531A (en) * 1983-09-06 1985-03-30 Matsushita Electric Ind Co Ltd Information recording medium and its production
JPS60102733U (en) * 1983-12-16 1985-07-13 日本コロムビア株式会社 information recording medium
FR2591788A1 (en) * 1985-12-16 1987-06-19 Ricoh Kk OPTICAL INFORMATION RECORDING MEDIUM
JPH01267857A (en) * 1988-04-20 1989-10-25 Hitachi Maxell Ltd Optical information recording medium and its production
US7495862B2 (en) * 2005-02-08 2009-02-24 Seagate Technology Llc Formed parts for adhesive height setting

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531002A (en) * 1976-05-13 1978-01-07 Philips Corp Radiation sensitive record

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531002A (en) * 1976-05-13 1978-01-07 Philips Corp Radiation sensitive record

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6055531A (en) * 1983-09-06 1985-03-30 Matsushita Electric Ind Co Ltd Information recording medium and its production
JPH0473225B2 (en) * 1983-09-06 1992-11-20 Matsushita Electric Ind Co Ltd
JPS60102733U (en) * 1983-12-16 1985-07-13 日本コロムビア株式会社 information recording medium
FR2591788A1 (en) * 1985-12-16 1987-06-19 Ricoh Kk OPTICAL INFORMATION RECORDING MEDIUM
JPH01267857A (en) * 1988-04-20 1989-10-25 Hitachi Maxell Ltd Optical information recording medium and its production
US7495862B2 (en) * 2005-02-08 2009-02-24 Seagate Technology Llc Formed parts for adhesive height setting
US8641860B2 (en) 2005-02-08 2014-02-04 Seagate Technology Llc Adhesive height setting

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