DE69823854D1 - Substrat für speicherplatte mit fehlerfreier oberfläche - Google Patents

Substrat für speicherplatte mit fehlerfreier oberfläche

Info

Publication number
DE69823854D1
DE69823854D1 DE69823854T DE69823854T DE69823854D1 DE 69823854 D1 DE69823854 D1 DE 69823854D1 DE 69823854 T DE69823854 T DE 69823854T DE 69823854 T DE69823854 T DE 69823854T DE 69823854 D1 DE69823854 D1 DE 69823854D1
Authority
DE
Germany
Prior art keywords
error
disk
substrate
free surface
free
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.)
Expired - Fee Related
Application number
DE69823854T
Other languages
English (en)
Other versions
DE69823854T2 (de
Inventor
K Pattabhirami Reddy
A Roe
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.)
Corning Inc
Original Assignee
Corning 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 Corning Inc filed Critical Corning Inc
Application granted granted Critical
Publication of DE69823854D1 publication Critical patent/DE69823854D1/de
Publication of DE69823854T2 publication Critical patent/DE69823854T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
    • G11B23/0064—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture mediums or carriers characterised by the selection of the material
    • 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
    • G11B5/736—Non-magnetic layer under a soft magnetic layer, e.g. between a substrate and a soft magnetic underlayer [SUL] or a keeper layer
    • 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
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
DE69823854T 1997-07-31 1998-07-23 Substrat für speicherplatte mit fehlerfreier oberfläche Expired - Fee Related DE69823854T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US5441497P 1997-07-31 1997-07-31
US54414P 1997-07-31
PCT/US1998/015275 WO1999006154A1 (en) 1997-07-31 1998-07-23 Memory disc substrate with defect free surface

Publications (2)

Publication Number Publication Date
DE69823854D1 true DE69823854D1 (de) 2004-06-17
DE69823854T2 DE69823854T2 (de) 2005-04-28

Family

ID=21990908

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69823854T Expired - Fee Related DE69823854T2 (de) 1997-07-31 1998-07-23 Substrat für speicherplatte mit fehlerfreier oberfläche

Country Status (6)

Country Link
US (1) US5993914A (de)
EP (1) EP1023128B1 (de)
JP (1) JP2001511579A (de)
KR (1) KR20010022455A (de)
DE (1) DE69823854T2 (de)
WO (1) WO1999006154A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201437011A (zh) * 2013-02-21 2014-10-01 Corning Inc 形成強化燒結玻璃結構之方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524918A (en) * 1967-09-04 1970-08-18 Tokyo Shibaura Electric Co Electrically-heated glass-melting apparatus
US3862830A (en) * 1973-07-18 1975-01-28 Rca Corp Method of forming vitreous enclosures for liquid crystal cells
US4020234A (en) * 1974-01-02 1977-04-26 International Business Machines Corporation High-alumina content compositions containing BaO-MgO-SiO2 glass and sintered ceramic articles made therefrom
JPS6025398B2 (ja) * 1980-12-27 1985-06-18 セントラル硝子株式会社 グレ−ズドセラミック基板
JPS60127532A (ja) * 1983-12-14 1985-07-08 Hitachi Ltd 磁気ディスク基板とその製造方法
JPS60138730A (ja) * 1983-12-27 1985-07-23 Kyocera Corp 磁気デイスク用基板
JPS6148123A (ja) * 1984-08-15 1986-03-08 Sumitomo Special Metals Co Ltd 記録デイスク用基板の製造方法
JPS6288137A (ja) * 1985-10-14 1987-04-22 Sumitomo Special Metals Co Ltd 磁気ディスク用基板の製造方法
JPS62120629A (ja) * 1985-11-20 1987-06-01 Sumitomo Special Metals Co Ltd 磁気ディスク及びその製造方法
JPS62151358A (ja) * 1985-12-26 1987-07-06 Toshiba Corp サ−マルヘツド
US4738885A (en) * 1986-02-24 1988-04-19 Kyocera Corporation Magnetic disk, substrate therefor and process for preparation thereof
US4971932B1 (en) * 1989-02-24 1995-01-03 Corning Glass Works Magnetic memory storage devices

Also Published As

Publication number Publication date
WO1999006154A1 (en) 1999-02-11
JP2001511579A (ja) 2001-08-14
EP1023128A4 (de) 2000-10-04
EP1023128A1 (de) 2000-08-02
US5993914A (en) 1999-11-30
DE69823854T2 (de) 2005-04-28
KR20010022455A (ko) 2001-03-15
EP1023128B1 (de) 2004-05-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee