JPS5764308A - Duplicate mother pattern for information recording carrier - Google Patents

Duplicate mother pattern for information recording carrier

Info

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
Application number
JP13721280A
Other languages
Japanese (ja)
Inventor
Kazuhisa Morimoto
Hiroshi Sugaya
Yoshihiro Okino
Riichi Fukutome
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP13721280A priority Critical patent/JPS5764308A/en
Publication of JPS5764308A publication Critical patent/JPS5764308A/en
Pending legal-status Critical Current

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
JP13721280A 1980-09-30 1980-09-30 Duplicate mother pattern for information recording carrier Pending JPS5764308A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330301A (en) * 1976-09-02 1978-03-22 Poridooru Kk Record disk stamper

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330301A (en) * 1976-09-02 1978-03-22 Poridooru Kk Record disk stamper

Cited By (1)

* Cited by examiner, † Cited by third party
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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