JPS5764308A - Duplicate mother pattern for information recording carrier - Google Patents
Duplicate mother pattern for information recording carrierInfo
- Publication number
- JPS5764308A JPS5764308A JP13721280A JP13721280A JPS5764308A JP S5764308 A JPS5764308 A JP S5764308A JP 13721280 A JP13721280 A JP 13721280A JP 13721280 A JP13721280 A JP 13721280A JP S5764308 A JPS5764308 A JP S5764308A
- Authority
- JP
- Japan
- Prior art keywords
- stamper
- information recording
- recording carrier
- mother pattern
- life
- 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
- Manufacturing Optical Record Carriers (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
PURPOSE: To make the life of a stamper longer, by providing nitride, carbide or oxide of the 4th or 5th roup such as titanium on the surface of the stamper.
CONSTITUTION: The life of a stamper can be made longer by 3W10 times, by coating nitride, carbide or oxide of the 4th or 5th element group on the surface of a nicked stamper with an ion plating method. Among the elements of the 4th or 5th group, Hf, Nb, Ta, Ti are especially effective as evaporating materials, and remarkable long life effect can be achieved by using TiN or TiC.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13721280A JPS5764308A (en) | 1980-09-30 | 1980-09-30 | Duplicate mother pattern for information recording carrier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13721280A JPS5764308A (en) | 1980-09-30 | 1980-09-30 | Duplicate mother pattern for information recording carrier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5764308A true JPS5764308A (en) | 1982-04-19 |
Family
ID=15193403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13721280A Pending JPS5764308A (en) | 1980-09-30 | 1980-09-30 | Duplicate mother pattern for information recording carrier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5764308A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2701151A1 (en) * | 1993-02-03 | 1994-08-05 | Digipress Sa | Method of manufacturing a pressing die, especially for the production of optical discs, pressing die obtained by this method and product, such as an optical disc, obtained from this pressing die |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5330301A (en) * | 1976-09-02 | 1978-03-22 | Poridooru Kk | Record disk stamper |
-
1980
- 1980-09-30 JP JP13721280A patent/JPS5764308A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5330301A (en) * | 1976-09-02 | 1978-03-22 | Poridooru Kk | Record disk stamper |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2701151A1 (en) * | 1993-02-03 | 1994-08-05 | Digipress Sa | Method of manufacturing a pressing die, especially for the production of optical discs, pressing die obtained by this method and product, such as an optical disc, obtained from this pressing die |
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