JPS54107308A - Original disc for high density recording record and production of the same - Google Patents
Original disc for high density recording record and production of the sameInfo
- Publication number
- JPS54107308A JPS54107308A JP1384978A JP1384978A JPS54107308A JP S54107308 A JPS54107308 A JP S54107308A JP 1384978 A JP1384978 A JP 1384978A JP 1384978 A JP1384978 A JP 1384978A JP S54107308 A JPS54107308 A JP S54107308A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- high density
- production
- metal
- density recording
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000000758 substrate Substances 0.000 abstract 6
- 239000011521 glass Substances 0.000 abstract 4
- 239000002184 metal Substances 0.000 abstract 3
- 238000000151 deposition Methods 0.000 abstract 1
- 238000007788 roughening Methods 0.000 abstract 1
- 238000007740 vapor deposition Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
Landscapes
- Manufacturing Optical Record Carriers (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
PURPOSE:To improve the yield of molds in the production of high density recording records such as PCM records or the like by performing the surface roughening work on glass substrate prior to depositing of a metal on the glass substrate. CONSTITUTION:With a disc form glass substrate 1, the portions from about 2 cm from the center hole on the inside circumference and from about 1.5 cm inward from the outermost circumference on the outside circumference are left and the other portions are covered. Next, while the substrate 1 is being rotated, the exposed portions are filed by about, e.g., #200. Thereby, a multiplicity of grooves of more than 1mum in both width and depth are engraved approximately concentrically on the inside and outside circumferences of the glass surfaces, whereby the face roughened parts 5 are formed. Next, the covering is removed and the substrate is washed. A specified metal 2 is deposited on this substrate 1 by such a means as vapor deposition and bits 3 are cut by laser beams to this metal 2, whereby the original disc is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1384978A JPS6048051B2 (en) | 1978-02-09 | 1978-02-09 | Master disk for high-density recording record and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1384978A JPS6048051B2 (en) | 1978-02-09 | 1978-02-09 | Master disk for high-density recording record and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54107308A true JPS54107308A (en) | 1979-08-23 |
| JPS6048051B2 JPS6048051B2 (en) | 1985-10-25 |
Family
ID=11844718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1384978A Expired JPS6048051B2 (en) | 1978-02-09 | 1978-02-09 | Master disk for high-density recording record and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6048051B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5887147U (en) * | 1981-12-08 | 1983-06-13 | 日本コロムビア株式会社 | Photoresist master board |
| EP0110729A2 (en) * | 1982-12-06 | 1984-06-13 | Plasmon Data Systems N.V. | Image forming and data storage |
| EP0110730A2 (en) * | 1982-12-06 | 1984-06-13 | Plasmon Data Systems N.V. | Improvements relating to data storage and recording |
| US4616237A (en) * | 1982-09-27 | 1986-10-07 | Pa Management Consultants, Ltd. | Data storage medium |
-
1978
- 1978-02-09 JP JP1384978A patent/JPS6048051B2/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5887147U (en) * | 1981-12-08 | 1983-06-13 | 日本コロムビア株式会社 | Photoresist master board |
| US4616237A (en) * | 1982-09-27 | 1986-10-07 | Pa Management Consultants, Ltd. | Data storage medium |
| US4724444A (en) * | 1982-09-27 | 1988-02-09 | Plasmon Data Systems, Incorporated | Data storage medium |
| US4928132A (en) * | 1982-09-27 | 1990-05-22 | Plasmon Data Systems | Optical data storage medium |
| EP0110729A2 (en) * | 1982-12-06 | 1984-06-13 | Plasmon Data Systems N.V. | Image forming and data storage |
| EP0110730A2 (en) * | 1982-12-06 | 1984-06-13 | Plasmon Data Systems N.V. | Improvements relating to data storage and recording |
| WO1984002420A1 (en) * | 1982-12-06 | 1984-06-21 | Comtech Res Unit | Image forming and data storage |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6048051B2 (en) | 1985-10-25 |
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