GB9621989D0 - Flat glass disks - Google Patents

Flat glass disks

Info

Publication number
GB9621989D0
GB9621989D0 GBGB9621989.4A GB9621989A GB9621989D0 GB 9621989 D0 GB9621989 D0 GB 9621989D0 GB 9621989 A GB9621989 A GB 9621989A GB 9621989 D0 GB9621989 D0 GB 9621989D0
Authority
GB
United Kingdom
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.)
Pending
Application number
GBGB9621989.4A
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.)
P T G PRECISION TECHNOLOGY GMB
Original Assignee
P T G PRECISION TECHNOLOGY GMB
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 P T G PRECISION TECHNOLOGY GMB filed Critical P T G PRECISION TECHNOLOGY GMB
Priority to GBGB9621989.4A priority Critical patent/GB9621989D0/en
Publication of GB9621989D0 publication Critical patent/GB9621989D0/en
Priority to AU45689/97A priority patent/AU4568997A/en
Priority to PCT/IB1997/001324 priority patent/WO1998017434A1/en
Pending 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)
GBGB9621989.4A 1996-10-22 1996-10-22 Flat glass disks Pending GB9621989D0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GBGB9621989.4A GB9621989D0 (en) 1996-10-22 1996-10-22 Flat glass disks
AU45689/97A AU4568997A (en) 1996-10-22 1997-10-22 Flat glass disks
PCT/IB1997/001324 WO1998017434A1 (en) 1996-10-22 1997-10-22 Flat glass disks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9621989.4A GB9621989D0 (en) 1996-10-22 1996-10-22 Flat glass disks

Publications (1)

Publication Number Publication Date
GB9621989D0 true GB9621989D0 (en) 1996-12-18

Family

ID=10801804

Family Applications (1)

Application Number Title Priority Date Filing Date
GBGB9621989.4A Pending GB9621989D0 (en) 1996-10-22 1996-10-22 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
WO1994017956A1 (en) * 1993-02-12 1994-08-18 Kondratenko Vladimir Stepanovi Process for machining components made of brittle materials and a device for carrying out the same
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
AU4568997A (en) 1998-05-15

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