JPS57120243A - Optical information carrier disk and its manufacture - Google Patents
Optical information carrier disk and its manufactureInfo
- 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
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5683851A (en) * | 1979-12-12 | 1981-07-08 | Toshiba Corp | Optical recording material |
-
1981
- 1981-01-14 JP JP56004233A patent/JPS57120243A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5683851A (en) * | 1979-12-12 | 1981-07-08 | Toshiba Corp | Optical recording material |
Cited By (6)
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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