SG50768A1 - A glass ceramic substrate for a magnetic disk and a method for manufacturing the same - Google Patents

A glass ceramic substrate for a magnetic disk and a method for manufacturing the same

Info

Publication number
SG50768A1
SG50768A1 SG1996010729A SG1996010729A SG50768A1 SG 50768 A1 SG50768 A1 SG 50768A1 SG 1996010729 A SG1996010729 A SG 1996010729A SG 1996010729 A SG1996010729 A SG 1996010729A SG 50768 A1 SG50768 A1 SG 50768A1
Authority
SG
Singapore
Prior art keywords
manufacturing
same
magnetic disk
ceramic substrate
glass ceramic
Prior art date
Application number
SG1996010729A
Other languages
English (en)
Inventor
Naoyuki Goto
Original Assignee
Ohara Kk
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 Ohara Kk filed Critical Ohara Kk
Publication of SG50768A1 publication Critical patent/SG50768A1/en

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/73Base 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
    • G11B5/739Magnetic recording media substrates
    • G11B5/73911Inorganic substrates
    • G11B5/73921Glass or ceramic substrates
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0009Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing silica as main constituent
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C23/00Other surface treatment of glass not in the form of fibres or filaments
    • C03C23/0005Other surface treatment of glass not in the form of fibres or filaments by irradiation
    • C03C23/0025Other surface treatment of glass not in the form of fibres or filaments by irradiation by a laser beam
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00Glass compositions
    • C03C3/04Glass compositions containing silica
    • C03C3/076Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/097Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/74Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82Disk carriers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Glass Compositions (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
SG1996010729A 1995-10-31 1996-09-18 A glass ceramic substrate for a magnetic disk and a method for manufacturing the same SG50768A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP30646795 1995-10-31
JP15597296 1996-05-28

Publications (1)

Publication Number Publication Date
SG50768A1 true SG50768A1 (en) 1998-07-20

Family

ID=26483837

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996010729A SG50768A1 (en) 1995-10-31 1996-09-18 A glass ceramic substrate for a magnetic disk and a method for manufacturing the same

Country Status (5)

Country Link
KR (1) KR100245281B1 (ko)
CN (1) CN1104005C (ko)
MY (1) MY116574A (ko)
SG (1) SG50768A1 (ko)
TW (1) TW445243B (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990057757A (ko) * 1997-12-30 1999-07-15 윤종용 하드 디스크
CN101784497A (zh) 2007-07-16 2010-07-21 康宁股份有限公司 用于局部可逆玻璃膨胀的方法
JP5053948B2 (ja) * 2007-12-21 2012-10-24 株式会社オハラ 結晶化ガラス
CN111940894A (zh) * 2019-04-30 2020-11-17 财团法人金属工业研究发展中心 二硅酸锂玻璃陶瓷的加工方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5391522A (en) * 1993-05-19 1995-02-21 Kabushiki Kaisya Ohara Glass-ceramic for magnetic disks and method for manufacturing the same
TW300879B (ko) * 1993-11-10 1997-03-21 Ibm

Also Published As

Publication number Publication date
KR100245281B1 (ko) 2000-02-15
TW445243B (en) 2001-07-11
CN1167315A (zh) 1997-12-10
CN1104005C (zh) 2003-03-26
MY116574A (en) 2004-02-28
KR970023003A (ko) 1997-05-30

Similar Documents

Publication Publication Date Title
GB2299991B (en) Glass substrate for magnetic disk
EP0609861A3 (en) Ceramic substrate and manufacturing process.
SG52914A1 (en) A glass- ceramic substrate for a magnetic disk
EP0779612A4 (en) MAGNETIC DISK CARRIER, MAGNETIC DISK AND METHOD FOR PRODUCING THE MAGNETIC DISK CARRIER
GB9400259D0 (en) Substrate for a magnetic disc and manufacture thereof
SG45390A1 (en) Glass substrate for a magnet disc and manufacture thereof
SG84541A1 (en) Glass substrate for magnetic recording medium, magnetic recording medium, and method of manufacturing the same
AU6758300A (en) Method for manufacturing a magnetic disk comprising a glass substrate
SG91259A1 (en) Glass substrate for magnetic media and method of making the same
GB2293179B (en) Coated substrate and process for its formation
AU5952298A (en) Substrate and production method thereof
SG101458A1 (en) Molded glass substrate for magnetic disk and method for manufacturing the same
SG65718A1 (en) Glass substrate for information recording medium method of manufacturing the substrate magnetic recording medium using the glass substrate and method of manufacturing the medium
EP0676796A3 (en) Semiconductor substrate and manufacturing process.
SG60012A1 (en) Semiconductor substrate and fabrication method for the same
GB2303811B (en) Method for producing a glass substrate for a magnetic disk
SG52985A1 (en) Method for preparing a substrate for a magnetic disk
SG71048A1 (en) Glass substrate magnetic recording medium and method of manufacturing the magnetic recording medium
SG80645A1 (en) Glass-ceramic substrate for an information storage medium and a method for manufacturing the same
GB2329893B (en) A composition for manufacturing silica glass and method for manufacturing silica glass using the same
SG73993A1 (en) Process for manufacturing a crystallized glass substrate for magnetic discs
EP0503961A3 (en) Method of fabricating glass substrate for disk
EP0770995A4 (en) OPTICAL DISC AND MANUFACTURING METHOD
EP0772208A3 (en) Coil and superconductive oxide and a method of making the same
SG44991A1 (en) A ceramic electronic part and a method for manufacturing the same