JPS57130203A - Master disk - Google Patents

Master disk

Info

Publication number
JPS57130203A
JPS57130203A JP1468581A JP1468581A JPS57130203A JP S57130203 A JPS57130203 A JP S57130203A JP 1468581 A JP1468581 A JP 1468581A JP 1468581 A JP1468581 A JP 1468581A JP S57130203 A JPS57130203 A JP S57130203A
Authority
JP
Japan
Prior art keywords
resin
disk
master disk
peeled
ultraviolet
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
Application number
JP1468581A
Other languages
Japanese (ja)
Other versions
JPS6346881B2 (en
Inventor
Yasuhiro Ishii
Osamu Oota
Masahiro Higuchi
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.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki 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 Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP1468581A priority Critical patent/JPS57130203A/en
Publication of JPS57130203A publication Critical patent/JPS57130203A/en
Publication of JPS6346881B2 publication Critical patent/JPS6346881B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Optical Record Carriers (AREA)

Abstract

PURPOSE: To facilitate the peeling of the resin cured by the ultraviolet-irradiation of a replica disk without reference to the kind of the resin, by decreasing adhesive strength by forming an inert layer on the surface of a master disk.
CONSTITUTION: On a glass base plate 1, photoresist layers 2 are formed to produce an original disk A and after nickel 3 is electrocast on its surface for form a female mold, this master disk B is peeled. The surface of the peeled master disk B is coated with nitric acid to form an inert layer 3a made of an oxidized film and its surface is further coated with resin 4 cured by ultraviolet irradiation; after a transparent plate made of synthetic resin is stuck to the surface, the side of the transparent plate 5 is irradiated with ultraviolet rays to permit the resin 4 to cure, and a replica disk C made of said resin 4 is peeled from the master disk 3.
COPYRIGHT: (C)1982,JPO&Japio
JP1468581A 1981-02-02 1981-02-02 Master disk Granted JPS57130203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1468581A JPS57130203A (en) 1981-02-02 1981-02-02 Master disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1468581A JPS57130203A (en) 1981-02-02 1981-02-02 Master disk

Publications (2)

Publication Number Publication Date
JPS57130203A true JPS57130203A (en) 1982-08-12
JPS6346881B2 JPS6346881B2 (en) 1988-09-19

Family

ID=11868055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1468581A Granted JPS57130203A (en) 1981-02-02 1981-02-02 Master disk

Country Status (1)

Country Link
JP (1) JPS57130203A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5112025A (en) * 1990-02-22 1992-05-12 Tdk Corporation Molds having wear resistant release coatings

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117102A (en) * 1976-03-29 1977-10-01 Koodo Kk Method of processing information memory stamper
JPS54138406A (en) * 1978-04-17 1979-10-26 Philips Nv Information disk and method of fabricating same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117102A (en) * 1976-03-29 1977-10-01 Koodo Kk Method of processing information memory stamper
JPS54138406A (en) * 1978-04-17 1979-10-26 Philips Nv Information disk and method of fabricating same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5112025A (en) * 1990-02-22 1992-05-12 Tdk Corporation Molds having wear resistant release coatings

Also Published As

Publication number Publication date
JPS6346881B2 (en) 1988-09-19

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