AU4568997A - Flat glass disks - Google Patents

Flat glass disks

Info

Publication number
AU4568997A
AU4568997A AU45689/97A AU4568997A AU4568997A AU 4568997 A AU4568997 A AU 4568997A AU 45689/97 A AU45689/97 A AU 45689/97A AU 4568997 A AU4568997 A AU 4568997A AU 4568997 A AU4568997 A AU 4568997A
Authority
AU
Australia
Prior art keywords
flat glass
glass disks
disks
flat
glass
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.)
Abandoned
Application number
AU45689/97A
Inventor
Vladimir Stepanovitch Kondratenko
Dmitry Gennadyevich Nikitin
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.)
PTG PRAZISIONSTECHNOLOGIE GmbH
Original Assignee
PTG PRAZISIONSTECHNOLOGIE GmbH
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 PTG PRAZISIONSTECHNOLOGIE GmbH filed Critical PTG PRAZISIONSTECHNOLOGIE GmbH
Publication of AU4568997A publication Critical patent/AU4568997A/en
Abandoned legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/04—Cutting or splitting in curves, especially for making spectacle lenses
    • 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
    • G11B5/739—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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • 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
    • G11B23/0014—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 record carriers not specifically of filamentary or web form
    • G11B23/0021—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 record carriers not specifically of filamentary or web form discs

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
AU45689/97A 1996-10-22 1997-10-22 Flat glass disks Abandoned AU4568997A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9621989 1996-10-22
GBGB9621989.4A GB9621989D0 (en) 1996-10-22 1996-10-22 Flat glass disks
PCT/IB1997/001324 WO1998017434A1 (en) 1996-10-22 1997-10-22 Flat glass disks

Publications (1)

Publication Number Publication Date
AU4568997A true AU4568997A (en) 1998-05-15

Family

ID=10801804

Family Applications (1)

Application Number Title Priority Date Filing Date
AU45689/97A Abandoned AU4568997A (en) 1996-10-22 1997-10-22 Flat glass disks

Country Status (3)

Country Link
AU (1) AU4568997A (en)
GB (1) GB9621989D0 (en)
WO (1) WO1998017434A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6795274B1 (en) 1999-09-07 2004-09-21 Asahi Glass Company, Ltd. Method for manufacturing a substantially circular substrate by utilizing scribing
US6664503B1 (en) 1999-09-07 2003-12-16 Asahi Glass Company, Ltd. Method for manufacturing a magnetic disk
DE10001292C1 (en) * 2000-01-14 2001-11-29 Schott Spezialglas Gmbh Process for cutting flat glass comprises producing a temperature difference between the areas on both sides of the separating line for exposing the completely cut contour by applying a mechanical force

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08506769A (en) * 1993-02-12 1996-07-23 ステパノビッチ コンドラテンコ，ブラディミール Method for machining brittle material members and apparatus for carrying out the method
US5487931A (en) * 1993-12-02 1996-01-30 Annacone; William R. Rigid disc substrate comprising a central hard core substrate with a hard, thermally and mechanically matched overlying smoothing layer and method for making the same

Also Published As

Publication number Publication date
WO1998017434A1 (en) 1998-04-30
GB9621989D0 (en) 1996-12-18

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