JPS56169235A - Manufacture of original optical disk - Google Patents
Manufacture of original optical diskInfo
- Publication number
- JPS56169235A JPS56169235A JP7277580A JP7277580A JPS56169235A JP S56169235 A JPS56169235 A JP S56169235A JP 7277580 A JP7277580 A JP 7277580A JP 7277580 A JP7277580 A JP 7277580A JP S56169235 A JPS56169235 A JP S56169235A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- laser beam
- groove
- tracking
- hole
- 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
Abstract
PURPOSE:To obtain a high-reliability original disk by facilitating control over a driving current for a laser beam and by performing groove work with high precision by repeating the process of forming photoresist on a substrate and then irradiating it with the laser beam in the manufacture of an original optical disk. CONSTITUTION:On a glass disk 8, a photoresist layer 9 is formed to a thickness one-eighth as thick as the wavelength (lambda) of a laser beam. While the disk 8 is rotated, a tracking groove 10 extending to the disk 8 is made with the laser beam. Then, the 2nd lambda/8 thickness photoresist layer 11 is formed over the 1st and while the disk 8 is rotated, only an index signal groove is irradiated with the laser beam by tracking the tracking groove 10 to form a signal groove 12 and a hole 12 extending to the disk 8. The latter process is repeated at need in order to form another signal groove and hole. Thus, the resist layers are only removed with the laser beam until the groove and hole reach the disk 8, so only simple control over a driving current is required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7277580A JPS56169235A (en) | 1980-06-02 | 1980-06-02 | Manufacture of original optical disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7277580A JPS56169235A (en) | 1980-06-02 | 1980-06-02 | Manufacture of original optical disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56169235A true JPS56169235A (en) | 1981-12-25 |
Family
ID=13499083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7277580A Pending JPS56169235A (en) | 1980-06-02 | 1980-06-02 | Manufacture of original optical disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56169235A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58114340A (en) * | 1981-12-26 | 1983-07-07 | Toshiba Corp | Production of original disk for substrate of information recording medium |
| US4586173A (en) * | 1982-07-12 | 1986-04-29 | Tokyo Shibaura Denki Kabushiki Kaisha | Optical disk |
| JPS63316333A (en) * | 1987-06-19 | 1988-12-23 | Nippon Columbia Co Ltd | Production of information recording medium |
-
1980
- 1980-06-02 JP JP7277580A patent/JPS56169235A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58114340A (en) * | 1981-12-26 | 1983-07-07 | Toshiba Corp | Production of original disk for substrate of information recording medium |
| US4586173A (en) * | 1982-07-12 | 1986-04-29 | Tokyo Shibaura Denki Kabushiki Kaisha | Optical disk |
| JPS63316333A (en) * | 1987-06-19 | 1988-12-23 | Nippon Columbia Co Ltd | Production of information recording medium |
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