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WO2008111387A1 - Substrate for recording medium and method for producing substrate for recording medium - Google Patents

Substrate for recording medium and method for producing substrate for recording medium Download PDF

Info

Publication number
WO2008111387A1
WO2008111387A1 PCT/JP2008/053253 JP2008053253W WO2008111387A1 WO 2008111387 A1 WO2008111387 A1 WO 2008111387A1 JP 2008053253 W JP2008053253 W JP 2008053253W WO 2008111387 A1 WO2008111387 A1 WO 2008111387A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
recording medium
mold
producing
curable resin
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.)
Ceased
Application number
PCT/JP2008/053253
Other languages
French (fr)
Japanese (ja)
Inventor
Shigeru Hosoe
Takemi Miyazaki
Yuiti Fujii
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.)
Konica Minolta Opto Inc
Original Assignee
Konica Minolta Opto Inc
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 Konica Minolta Opto Inc filed Critical Konica Minolta Opto Inc
Priority to JP2009503953A priority Critical patent/JPWO2008111387A1/en
Publication of WO2008111387A1 publication Critical patent/WO2008111387A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/04—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles using movable moulds not applied
    • B29C39/08—Introducing the material into the mould by centrifugal force
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy substrates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73921—Glass or ceramic substrates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2531—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising glass
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2532—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising metals
    • 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
    • G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Metallurgy (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Magnetic Record Carriers (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Disclosed is a substrate for recording medium, which is easily produced by molding and hardly softened or melted. Also disclosed is a method for producing such a substrate for recording medium. Specifically disclosed is a substrate for recording medium, which is characterized in that at least one side of a circular disk-like substrate is composed of an energy curable resin. Also specifically disclosed is a method for producing such a substrate for recording medium, which is characterized in that at least one of a first mold and a second mold has a flat groove. The method is further characterized in that a circular cavity, which is formed by arranging the first mold and the second mold as to face each other with the flat groove being located inside, is filled with a liquid energy curable resin, and the liquid energy curable resin is cured therein.
PCT/JP2008/053253 2007-03-15 2008-02-26 Substrate for recording medium and method for producing substrate for recording medium Ceased WO2008111387A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009503953A JPWO2008111387A1 (en) 2007-03-15 2008-02-26 RECORDING MEDIUM SUBSTRATE AND METHOD FOR PRODUCING RECORDING MEDIUM SUBSTRATE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-067562 2007-03-15
JP2007067562 2007-03-15

Publications (1)

Publication Number Publication Date
WO2008111387A1 true WO2008111387A1 (en) 2008-09-18

Family

ID=39759329

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/053253 Ceased WO2008111387A1 (en) 2007-03-15 2008-02-26 Substrate for recording medium and method for producing substrate for recording medium

Country Status (2)

Country Link
JP (1) JPWO2008111387A1 (en)
WO (1) WO2008111387A1 (en)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63205833A (en) * 1987-02-20 1988-08-25 Matsushita Electric Ind Co Ltd Manufacturing method of optical disk substrate
JPS63281239A (en) * 1987-05-13 1988-11-17 Hitachi Ltd Information recording master
JPH02189739A (en) * 1989-01-18 1990-07-25 Hitachi Ltd Information recording medium and production thereof
JPH0615991A (en) * 1992-06-30 1994-01-25 Canon Inc Method for manufacturing optical card base with anti-counterfeit hologram and method for manufacturing optical information recording medium using the base
JP2002166453A (en) * 2000-09-25 2002-06-11 Mitsui Chemicals Inc Injection compression molding method for disk-shaped molding, information recording medium, and injection compression molding apparatus
JP2003059099A (en) * 2001-08-08 2003-02-28 Hitachi Maxell Ltd Optical recording medium and manufacturing method thereof
JP2003123319A (en) * 1995-02-15 2003-04-25 Matsushita Electric Ind Co Ltd Optical information medium, optical information medium manufacturing method, and optical information medium manufacturing apparatus
JP2004220751A (en) * 2002-11-20 2004-08-05 Mitsubishi Chemicals Corp Optical recording medium, method for measuring film thickness of optical recording medium, method for controlling film thickness, manufacturing method, film thickness measuring device and film thickness controlling device
JP2004296064A (en) * 2002-09-05 2004-10-21 Matsushita Electric Ind Co Ltd Optical information recording medium, method of manufacturing the same, and method of holding optical information recording medium
JP2005262842A (en) * 2004-03-22 2005-09-29 Meiki Co Ltd Molding mold for disc substrate
JP2005332493A (en) * 2004-05-20 2005-12-02 Sony Corp Multilayer optical disc and method for manufacturing the same
JP3126267U (en) * 2006-08-08 2006-10-19 富士写真フイルム株式会社 Optical disc manufacturing equipment
WO2006123619A1 (en) * 2005-05-17 2006-11-23 Matsushita Electric Industrial Co., Ltd. Multilayer information recording medium and production method therefor

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63205833A (en) * 1987-02-20 1988-08-25 Matsushita Electric Ind Co Ltd Manufacturing method of optical disk substrate
JPS63281239A (en) * 1987-05-13 1988-11-17 Hitachi Ltd Information recording master
JPH02189739A (en) * 1989-01-18 1990-07-25 Hitachi Ltd Information recording medium and production thereof
JPH0615991A (en) * 1992-06-30 1994-01-25 Canon Inc Method for manufacturing optical card base with anti-counterfeit hologram and method for manufacturing optical information recording medium using the base
JP2003123319A (en) * 1995-02-15 2003-04-25 Matsushita Electric Ind Co Ltd Optical information medium, optical information medium manufacturing method, and optical information medium manufacturing apparatus
JP2002166453A (en) * 2000-09-25 2002-06-11 Mitsui Chemicals Inc Injection compression molding method for disk-shaped molding, information recording medium, and injection compression molding apparatus
JP2003059099A (en) * 2001-08-08 2003-02-28 Hitachi Maxell Ltd Optical recording medium and manufacturing method thereof
JP2004296064A (en) * 2002-09-05 2004-10-21 Matsushita Electric Ind Co Ltd Optical information recording medium, method of manufacturing the same, and method of holding optical information recording medium
JP2004220751A (en) * 2002-11-20 2004-08-05 Mitsubishi Chemicals Corp Optical recording medium, method for measuring film thickness of optical recording medium, method for controlling film thickness, manufacturing method, film thickness measuring device and film thickness controlling device
JP2005262842A (en) * 2004-03-22 2005-09-29 Meiki Co Ltd Molding mold for disc substrate
JP2005332493A (en) * 2004-05-20 2005-12-02 Sony Corp Multilayer optical disc and method for manufacturing the same
WO2006123619A1 (en) * 2005-05-17 2006-11-23 Matsushita Electric Industrial Co., Ltd. Multilayer information recording medium and production method therefor
JP3126267U (en) * 2006-08-08 2006-10-19 富士写真フイルム株式会社 Optical disc manufacturing equipment

Also Published As

Publication number Publication date
JPWO2008111387A1 (en) 2010-06-24

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