JPS6430041A - Optical disk - Google Patents

Optical disk

Info

Publication number
JPS6430041A
JPS6430041A JP62183277A JP18327787A JPS6430041A JP S6430041 A JPS6430041 A JP S6430041A JP 62183277 A JP62183277 A JP 62183277A JP 18327787 A JP18327787 A JP 18327787A JP S6430041 A JPS6430041 A JP S6430041A
Authority
JP
Japan
Prior art keywords
mixture
curing resin
alumina
substrate
recording film
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
JP62183277A
Other languages
Japanese (ja)
Other versions
JP2550084B2 (en
Inventor
Yumiko Anzai
Yoshinori Miyamura
Magoi Ichikawa
Shinkichi Horigome
Hajime Fukuya
Masahiro Oshima
Takeshi Nakao
Norio Ota
Yoichi Kawakubo
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62183277A priority Critical patent/JP2550084B2/en
Publication of JPS6430041A publication Critical patent/JPS6430041A/en
Application granted granted Critical
Publication of JP2550084B2 publication Critical patent/JP2550084B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To produce a uniform protective film having high surface hardness by forming a protective layer consisting of a mixture composed of a UV curing resin and inorg. matter on a recording film. CONSTITUTION:The previously prepd. mixture 2 composed of the UV curing resin and alumina is coated on a disk-shaped substrate 1 having the recording film 5 on rugged patterns to the same disk shape and a stamper 3 having a flat surface is superposed thereon, then >=10kg load is exerted thereon from above over the entire part of the substrate to force spread the mixture composed of the UV curing resin and the alumina. The mixture 2 composed of the UV curing resin and the alumina is thereafter cured by projecting the UV rays 4 and the stamper 3 is removed. The protective film consisting of the mixture 2 composed of the UV curing resin and the alumina is then formed on the recording film 5 of the substrate. The optical disk having the protective layer of the high surface hardness is thereby obtd.
JP62183277A 1987-07-24 1987-07-24 Light disk Expired - Lifetime JP2550084B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62183277A JP2550084B2 (en) 1987-07-24 1987-07-24 Light disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62183277A JP2550084B2 (en) 1987-07-24 1987-07-24 Light disk

Publications (2)

Publication Number Publication Date
JPS6430041A true JPS6430041A (en) 1989-01-31
JP2550084B2 JP2550084B2 (en) 1996-10-30

Family

ID=16132841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62183277A Expired - Lifetime JP2550084B2 (en) 1987-07-24 1987-07-24 Light disk

Country Status (1)

Country Link
JP (1) JP2550084B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02154347A (en) * 1988-12-07 1990-06-13 Kyocera Corp Magneto-optical recording element

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6369048A (en) * 1986-09-11 1988-03-29 Seiko Epson Corp Optical recording medium
JPS6369044A (en) * 1986-09-11 1988-03-29 Seiko Epson Corp optical recording medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6369048A (en) * 1986-09-11 1988-03-29 Seiko Epson Corp Optical recording medium
JPS6369044A (en) * 1986-09-11 1988-03-29 Seiko Epson Corp optical recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02154347A (en) * 1988-12-07 1990-06-13 Kyocera Corp Magneto-optical recording element

Also Published As

Publication number Publication date
JP2550084B2 (en) 1996-10-30

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