JPS6479950A - Optical recording medium and its production - Google Patents
Optical recording medium and its productionInfo
- Publication number
- JPS6479950A JPS6479950A JP62236544A JP23654487A JPS6479950A JP S6479950 A JPS6479950 A JP S6479950A JP 62236544 A JP62236544 A JP 62236544A JP 23654487 A JP23654487 A JP 23654487A JP S6479950 A JPS6479950 A JP S6479950A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- laser light
- servo
- pickup
- groove
- 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
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
PURPOSE:To record information to a prescribed flat place while applying a servo by providing a groove for a tracking servo required at the time of recording information at an opposite side to the face of a fat and transparent substrate on which a recording layer is disposed, providing pickups for a servo and a recording and interlocking them. CONSTITUTION:The plural grooves 15 for the tracking servo are formed on the one face of the flat and transparent substrate 2 consisting of an optical glass and a transmission layer 3 which is transparent to a recording laser light and a reproducing laser light and reflecting a tracking laser light is applied on an entire face while burying the groove 15. On the other face 16 of the substrate 2, a recording layer 1 sensing to the recording laser light, executing a boring recording and transparent to the reproducing laser light is applied. Then, on the surface of the groove 15, the recording pickup 21 and the pickup 22 for the tracking servo are provided, the groove 15 is used for the pickup 22 to use the pickup 21 while applying the servo and form a writing bit string 11 at the prescribed position of the layer 1 through the substrate 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62236544A JPS6479950A (en) | 1987-09-21 | 1987-09-21 | Optical recording medium and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62236544A JPS6479950A (en) | 1987-09-21 | 1987-09-21 | Optical recording medium and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6479950A true JPS6479950A (en) | 1989-03-24 |
Family
ID=17002240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62236544A Pending JPS6479950A (en) | 1987-09-21 | 1987-09-21 | Optical recording medium and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6479950A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0337839A (en) * | 1989-07-05 | 1991-02-19 | Brother Ind Ltd | Large-capacity optical disk |
| EP0437223A2 (en) * | 1990-01-11 | 1991-07-17 | Matsushita Electric Industrial Co., Ltd. | Optical data medium cassette |
| JP2002117585A (en) * | 2000-06-09 | 2002-04-19 | Tdk Corp | Optical information medium |
-
1987
- 1987-09-21 JP JP62236544A patent/JPS6479950A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0337839A (en) * | 1989-07-05 | 1991-02-19 | Brother Ind Ltd | Large-capacity optical disk |
| EP0437223A2 (en) * | 1990-01-11 | 1991-07-17 | Matsushita Electric Industrial Co., Ltd. | Optical data medium cassette |
| JP2002117585A (en) * | 2000-06-09 | 2002-04-19 | Tdk Corp | Optical information medium |
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