JPH0454302B2 - - Google Patents
Info
- Publication number
- JPH0454302B2 JPH0454302B2 JP62207103A JP20710387A JPH0454302B2 JP H0454302 B2 JPH0454302 B2 JP H0454302B2 JP 62207103 A JP62207103 A JP 62207103A JP 20710387 A JP20710387 A JP 20710387A JP H0454302 B2 JPH0454302 B2 JP H0454302B2
- Authority
- JP
- Japan
- Prior art keywords
- pit row
- digital
- pit
- substrate
- row
- 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.)
- Expired - Lifetime
Links
- 239000000758 substrate Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 14
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 238000003698 laser cutting Methods 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 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
- G11B23/0014—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 record carriers not specifically of filamentary or web form
- G11B23/0021—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 record carriers not specifically of filamentary or web form discs
- G11B23/0028—Details
- G11B23/0035—Details means incorporated in the disc, e.g. hub, to enable its guiding, loading or driving
-
- 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)
- Laser Beam Processing (AREA)
- Manufacturing Optical Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62207103A JPS6453788A (en) | 1987-08-20 | 1987-08-20 | Laser beam cutting method for digital disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62207103A JPS6453788A (en) | 1987-08-20 | 1987-08-20 | Laser beam cutting method for digital disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6453788A JPS6453788A (en) | 1989-03-01 |
| JPH0454302B2 true JPH0454302B2 (enrdf_load_stackoverflow) | 1992-08-31 |
Family
ID=16534250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62207103A Granted JPS6453788A (en) | 1987-08-20 | 1987-08-20 | Laser beam cutting method for digital disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6453788A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8826311B2 (en) | 2011-05-10 | 2014-09-02 | Panasonic Corporation | Information recording medium and holding device for holding information recording medium |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2511547B2 (ja) * | 1989-12-30 | 1996-06-26 | 太陽誘電株式会社 | 光情報記録媒体の製造方法 |
| JP2795725B2 (ja) * | 1990-03-23 | 1998-09-10 | キヤノン株式会社 | 光ディスクの切り出し方法及び切断装置 |
| DE4403169A1 (de) * | 1994-02-02 | 1995-08-10 | Warner Music Mfg Europa Gmbh | Verfahren zum Einbringen von Mittellöchern in CD's |
| DE19625717A1 (de) * | 1996-06-27 | 1998-01-02 | Krauss Maffei Ag | Verfahren zum Abtrennen des Angusses von einem Spritzgießteil |
| GB0127410D0 (en) * | 2001-11-15 | 2002-01-09 | Renishaw Plc | Laser substrate treatment |
-
1987
- 1987-08-20 JP JP62207103A patent/JPS6453788A/ja active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8826311B2 (en) | 2011-05-10 | 2014-09-02 | Panasonic Corporation | Information recording medium and holding device for holding information recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6453788A (en) | 1989-03-01 |
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