JPS54118205A - Infomration recording disc - Google Patents
Infomration recording discInfo
- Publication number
- JPS54118205A JPS54118205A JP2576778A JP2576778A JPS54118205A JP S54118205 A JPS54118205 A JP S54118205A JP 2576778 A JP2576778 A JP 2576778A JP 2576778 A JP2576778 A JP 2576778A JP S54118205 A JPS54118205 A JP S54118205A
- Authority
- JP
- Japan
- Prior art keywords
- metal film
- information signals
- recorded
- infomration
- forming
- 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
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)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
PURPOSE:To let the disc maintain the sureness of reproduction over a long period of time by forming the pits corresponding to information signals to the metal film deposited on a disc form substrate and further providing a stable covering metal film thereon. CONSTITUTION:A metal film 2 of about 800 to 2000 Angstrom in thickness is formed on a glass substrate 1 by evaporating aluminum. Next, with this being rotated, the laser light having been modulated with the information signals to be recorded is radiated to allow the metal film 2 to locally evaporate and fly off, thus forming the pits 3 corresponding to the information signals. Following the this, a metal film 3 is formed on the surface having been recorded with the informations by evaporating chromium, gold or other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2576778A JPS54118205A (en) | 1978-03-06 | 1978-03-06 | Infomration recording disc |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2576778A JPS54118205A (en) | 1978-03-06 | 1978-03-06 | Infomration recording disc |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54118205A true JPS54118205A (en) | 1979-09-13 |
Family
ID=12174980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2576778A Pending JPS54118205A (en) | 1978-03-06 | 1978-03-06 | Infomration recording disc |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54118205A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS597093A (en) * | 1982-07-06 | 1984-01-14 | Sanyo Electric Co Ltd | Optical recording medium |
JPS5979444A (en) * | 1982-10-28 | 1984-05-08 | Sharp Corp | Optical memory element |
JPS62266746A (en) * | 1986-05-14 | 1987-11-19 | Teijin Ltd | Optical recording medium and its production |
-
1978
- 1978-03-06 JP JP2576778A patent/JPS54118205A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS597093A (en) * | 1982-07-06 | 1984-01-14 | Sanyo Electric Co Ltd | Optical recording medium |
JPH0376237B2 (en) * | 1982-07-06 | 1991-12-04 | Sanyo Electric Co | |
JPS5979444A (en) * | 1982-10-28 | 1984-05-08 | Sharp Corp | Optical memory element |
JPS62266746A (en) * | 1986-05-14 | 1987-11-19 | Teijin Ltd | Optical recording medium and its production |
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