SG10201408031RA - Glass for magnetic recording media substrates, magnetic recording media substrates, magnetic recording media and method for preparation thereof - Google Patents
Glass for magnetic recording media substrates, magnetic recording media substrates, magnetic recording media and method for preparation thereofInfo
- Publication number
- SG10201408031RA SG10201408031RA SG10201408031RA SG10201408031RA SG10201408031RA SG 10201408031R A SG10201408031R A SG 10201408031RA SG 10201408031R A SG10201408031R A SG 10201408031RA SG 10201408031R A SG10201408031R A SG 10201408031RA SG 10201408031R A SG10201408031R A SG 10201408031RA
- Authority
- SG
- Singapore
- Prior art keywords
- percent
- oxide
- magnetic recording
- glass
- content
- Prior art date
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- C03C3/095—Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
-
- 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
- C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
-
- 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31—Surface property or characteristic of web, sheet or block
- Y10T428/315—Surface modified glass [e.g., tempered, strengthened, etc.]
Abstract
Abstract Glass for Magnetic Recording Media Substrates, Magnetic Recording Media Substrates, Magnetic Recording Media and Method for Preparation thereof The present invention relates to a glass for a magnetic recording medium substrate permitting the realization of a magnetic recording medium substrate affording good chemical durability and having an extremely flat surface, magnetic recording medium substrate a comprised of this glass, magnetic a recording medium equipped with this substrate, and methods of manufacturing the same. The glasses comprise an oxide of a first glass, comprising, as mass percentages: Si 20 to 40 percent, A! 0.1 to 10 percent, Li 0.1 to 5 percent, Na 0.1 to 10 percent, K 0 to 5 percent (where the total content of Li, Na, and is K 15 percent or less) Sn 0.005 to 0.6 percent, and Ce 0 to 1.2 percent; the Sb content is 0 to 0.1 percent; and not comprising As or F; and by having a A (Lambda) 80 of 320 or greater; an oxide of a second glass, comprising, as molar percentages: Si0 2 60 to 75 percent, Al 0 2 3 1 to 15 percent, Li 0 2 0.1 to 20 percent, Na 0 2 0.1 to 15 percent, and K 0 2 0 to 5 percent (where the total content of Li 0, 2 Na 0, 2 and K 0 2 is 25 percent or lower); based on the total amount of the glass components, 0.01 to 0.7 mass percent of Sn oxide and 0 to 1.4 mass percent of Ce oxide are added; the content of Sb oxide is 0 to 0.1 mass percent; and not comprising As or F; and an oxide of a third glass, comprising, as molar percentages: Si0 2 60 to 75 percent, AI2O3 1 to 15 percent, 229 Li 0 2 0.1 to 20 percent, Na 0 2 0.1 to 15 percent, K 0 2 0 to 5 percent (where the total content of Li 0, 2 Na 0, 2 and K 0 2 is 25 percent or less); by comprising a 0.1 to 3.5 mass percent of total content of Sn oxide and Ce oxide, based on the total amount of the glass components; the ratio of the Sn oxide content to the total content of Sn oxide and Ce oxide (Sn oxide content/(Sn oxide content + Ce oxide content)) is 0.01 to 0.99; the Sb oxide content is 0 to 0.1 percent; and comprising no As or and optionally F having a A (Lambda) 80 of 320 or greater. Figure 1. 230
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008072096 | 2008-03-19 | ||
| JP2008170845 | 2008-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SG10201408031RA true SG10201408031RA (en) | 2015-01-29 |
Family
ID=41090693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SG10201408031RA SG10201408031RA (en) | 2008-03-19 | 2009-03-18 | Glass for magnetic recording media substrates, magnetic recording media substrates, magnetic recording media and method for preparation thereof |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US9016092B2 (en) |
| EP (1) | EP2277838B1 (en) |
| JP (3) | JP5658030B2 (en) |
| CN (2) | CN102757180B (en) |
| MY (1) | MY158789A (en) |
| SG (1) | SG10201408031RA (en) |
| TW (1) | TWI447086B (en) |
| WO (1) | WO2009116278A1 (en) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG10201408031RA (en) * | 2008-03-19 | 2015-01-29 | Hoya Corp | Glass for magnetic recording media substrates, magnetic recording media substrates, magnetic recording media and method for preparation thereof |
| US8932510B2 (en) | 2009-08-28 | 2015-01-13 | Corning Incorporated | Methods for laser cutting glass substrates |
| JP2011088769A (en) * | 2009-10-21 | 2011-05-06 | Konica Minolta Opto Inc | Glass substrate for information recording medium and information recording medium |
| JP2011088768A (en) * | 2009-10-21 | 2011-05-06 | Konica Minolta Opto Inc | Glass substrate for information recording medium and information recording medium |
| US8946590B2 (en) | 2009-11-30 | 2015-02-03 | Corning Incorporated | Methods for laser scribing and separating glass substrates |
| WO2011121903A1 (en) * | 2010-03-29 | 2011-10-06 | コニカミノルタオプト株式会社 | Method for producing glass substrate for information recording medium |
| JP5752971B2 (en) * | 2010-03-31 | 2015-07-22 | Hoya株式会社 | Manufacturing method of glass substrate for information recording medium |
| JP5837492B2 (en) * | 2010-06-30 | 2015-12-24 | Hoya株式会社 | Glass substrate for information recording media |
| CN104066695B (en) * | 2011-10-25 | 2019-02-12 | 康宁股份有限公司 | The alkaline earth metal aluminosilicate glass composition of chemistry and mechanical endurance with improvement |
| WO2013099142A1 (en) * | 2011-12-28 | 2013-07-04 | コニカミノルタ株式会社 | Abrasive agent for substrates and substrate manufacturing method |
| CN104303231A (en) * | 2012-05-16 | 2015-01-21 | Hoya株式会社 | Glass for magnetic recording medium substrate and use for same |
| US9938180B2 (en) * | 2012-06-05 | 2018-04-10 | Corning Incorporated | Methods of cutting glass using a laser |
| US9139469B2 (en) | 2012-07-17 | 2015-09-22 | Corning Incorporated | Ion exchangeable Li-containing glass compositions for 3-D forming |
| US9610653B2 (en) | 2012-09-21 | 2017-04-04 | Electro Scientific Industries, Inc. | Method and apparatus for separation of workpieces and articles produced thereby |
| CN104885154B (en) * | 2012-12-27 | 2018-10-12 | 佳能安内华股份有限公司 | Magnetic recording media and its manufacturing method |
| CN104446408B (en) | 2013-09-25 | 2016-12-07 | 比亚迪股份有限公司 | A kind of absorbing material and preparation method thereof |
| WO2017002835A1 (en) * | 2015-06-30 | 2017-01-05 | Hoya株式会社 | Glass for magnetic recording medium substrate, magnetic recording medium substrate, and magnetic recording medium |
| US10720180B2 (en) | 2015-09-30 | 2020-07-21 | Hoya Corporation | Magnetic-disk glass substrate, magnetic-disk glass substrate intermediate, and method for manufacturing magnetic-disk glass substrate |
| KR102121414B1 (en) | 2016-01-21 | 2020-06-10 | 에이지씨 가부시키가이샤 | Chemically strengthened glass and glass for chemical strengthening |
| US20170320769A1 (en) * | 2016-05-06 | 2017-11-09 | Corning Incorporated | Glass compositions that retain high compressive stress after post-ion exchange heat treatment |
| TWI755466B (en) * | 2016-12-28 | 2022-02-21 | 日商東洋鋼鈑股份有限公司 | Substrate for hard disk and hard disk device using the same |
| KR20190112273A (en) * | 2017-02-07 | 2019-10-04 | 에이지씨 가부시키가이샤 | Chemical tempered glass |
| CN107117813A (en) * | 2017-06-30 | 2017-09-01 | 合肥利裕泰玻璃制品有限公司 | A kind of fluorin environment protection glassware and preparation method thereof |
| KR102373824B1 (en) * | 2017-09-06 | 2022-03-15 | 삼성전자주식회사 | Cooking apparatus and manufacturing method thereof |
| US11193583B2 (en) | 2017-11-07 | 2021-12-07 | Hyster-Yale Group, Inc. | Continuously variable transmission control |
| CN115116486A (en) * | 2018-03-30 | 2022-09-27 | Hoya株式会社 | Plate material for annealing treatment, method for producing plate material for annealing treatment, and method for producing substrate |
| WO2019221102A1 (en) | 2018-05-16 | 2019-11-21 | Hoya株式会社 | Glass for magnetic recording medium substrate, magnetic recording medium substrate, magnetic recording medium, glass spacer for magnetic recording/reproducing device, and magnetic recording/reproducing device |
| EP3882223A4 (en) * | 2018-11-12 | 2022-08-10 | Nippon Electric Glass Co., Ltd. | Li2o-al2o3-sio2 system crystallized glass |
| WO2022097416A1 (en) * | 2020-11-09 | 2022-05-12 | 日本電気硝子株式会社 | Toughened glass plate, method for manufacturing toughened glass plate, and glass plate to be toughened |
| WO2023244792A1 (en) * | 2022-06-17 | 2023-12-21 | Corning Incorporated | Au and ag containing glass composition and colored glass-based articles formed therefrom |
Family Cites Families (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU399469A1 (en) * | 1971-10-04 | 1973-10-03 | E ^ UNIONAL SATE ;; ,, •• - '<: .-.> &: Acc; ush3399469M Cl. From 03/5 / 00УДК 666.113.62Г4 Г • 33'32-ЗГ28'27 (088.8) AuthorsС. I. Ivakhin and O. M. Vyshinska | |
| SU1284958A1 (en) * | 1985-04-12 | 1987-01-23 | Предприятие П/Я Х-5382 | Glass |
| JP3384286B2 (en) * | 1997-06-20 | 2003-03-10 | 日本板硝子株式会社 | Glass substrate for magnetic recording media |
| US6577472B2 (en) * | 1997-07-24 | 2003-06-10 | Hitachi, Ltd. | Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture |
| JP4086211B2 (en) * | 1998-04-17 | 2008-05-14 | Ｈｏｙａ株式会社 | Glass composition and method for producing the same |
| US6376403B1 (en) * | 1998-04-17 | 2002-04-23 | Nippon Sheet Glass Co., Ltd. | Glass composition and process for producing the same |
| US6436859B1 (en) * | 1999-03-25 | 2002-08-20 | Central Glass Company, Limited | Glass composition and ion exchange strengthened glass article produced from same |
| SG97155A1 (en) * | 1999-07-07 | 2003-07-18 | Hoya Corp | Substrate for information recording medium and magnetic recording medium composed of crystallized glass |
| DE19934072C2 (en) | 1999-07-23 | 2001-06-13 | Schott Glas | Alkali-free aluminoborosilicate glass, its uses and processes for its manufacture |
| JP2001076336A (en) * | 1999-09-08 | 2001-03-23 | Hoya Corp | Glass substrate for information recording medium and information recording medium using the same |
| US20020009602A1 (en) * | 2000-03-13 | 2002-01-24 | Hoya Corporation | Method and apparatus of fabricating glass molded article, method of fabricating glass substrate, and information recording medium |
| DE10017701C2 (en) * | 2000-04-08 | 2002-03-07 | Schott Glas | Floated flat glass |
| JP3734745B2 (en) * | 2000-12-18 | 2006-01-11 | Ｈｏｙａ株式会社 | Manufacturing method of glass substrate for magnetic recording medium and glass substrate for magnetic recording medium obtained using the same |
| JP2003183046A (en) | 2000-12-25 | 2003-07-03 | Nippon Electric Glass Co Ltd | Funnel for non-beam index type cathode ray tube |
| JP2002293571A (en) * | 2001-03-30 | 2002-10-09 | Nippon Electric Glass Co Ltd | Glass for illumination |
| JP3995902B2 (en) * | 2001-05-31 | 2007-10-24 | Ｈｏｙａ株式会社 | Glass substrate for information recording medium and magnetic information recording medium using the same |
| US7538050B2 (en) * | 2002-02-05 | 2009-05-26 | Nippon Electric Glass Co., Ltd. | Glass composition |
| CN1650353B (en) * | 2002-06-03 | 2012-05-30 | Hoya株式会社 | Glass substrate for information recording media and information recording medium |
| US20050096209A1 (en) * | 2002-06-10 | 2005-05-05 | Asahi Glass Company, Limited | Glass and method for producing glass |
| US20050178159A1 (en) * | 2002-07-08 | 2005-08-18 | Asahi Glass Company, Limited | Apparatus for manufacturing sheet glass |
| US7601446B2 (en) * | 2002-11-07 | 2009-10-13 | Hoya Corporation | Substrate for information recording medium, information recording medium and method for manufacturing same |
| JP2004288228A (en) * | 2003-01-31 | 2004-10-14 | Hoya Corp | Substrate for information recording medium, information recording medium, and its manufacturing method |
| WO2004106251A1 (en) * | 2003-05-30 | 2004-12-09 | Asahi Glass Company, Limited | Glass sheet for display substrate |
| US7212340B2 (en) * | 2003-07-14 | 2007-05-01 | Konica Minolta Holdings, Inc. | Forming methods, forming devices for articles having a micro-sized shape and optical elements |
| JP4213077B2 (en) * | 2004-04-28 | 2009-01-21 | Ｈｏｙａ株式会社 | GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND ITS MANUFACTURING METHOD, AND INFORMATION RECORDING MEDIUM AND ITS MANUFACTURING METHOD |
| JP2006099936A (en) * | 2004-08-30 | 2006-04-13 | Hoya Corp | Method for manufacturing magnetic disk glass substrate, method for manufacturing magnetic disk, and cylindrical glass base material for glass substrate |
| SG171640A1 (en) * | 2006-06-08 | 2011-06-29 | Hoya Corp | Glass for use in substrate for information recording medium, substrate for information recording medium and information recording medium, and their manufacturing method |
| JP5483821B2 (en) * | 2007-02-27 | 2014-05-07 | ＡｖａｎＳｔｒａｔｅ株式会社 | Glass substrate for display device and display device |
| SG10201408031RA (en) * | 2008-03-19 | 2015-01-29 | Hoya Corp | Glass for magnetic recording media substrates, magnetic recording media substrates, magnetic recording media and method for preparation thereof |
| JP4559523B2 (en) * | 2009-02-24 | 2010-10-06 | 株式会社オハラ | Glass substrate for information recording medium and manufacturing method thereof |
| JP5734189B2 (en) * | 2009-08-10 | 2015-06-17 | Hoya株式会社 | Glass for magnetic recording medium substrate, magnetic recording medium substrate and manufacturing method thereof, and magnetic recording medium |
| US8394516B2 (en) * | 2010-10-29 | 2013-03-12 | Hoya Corporation | Glass substrate for magnetic recording medium and magnetic recording medium |
| US8652660B2 (en) * | 2010-12-21 | 2014-02-18 | Hoya Corporation | Glass substrate for magnetic recording medium and its use |
-
2009
- 2009-03-18 SG SG10201408031RA patent/SG10201408031RA/en unknown
- 2009-03-18 US US12/933,398 patent/US9016092B2/en active Active
- 2009-03-18 JP JP2010503777A patent/JP5658030B2/en active Active
- 2009-03-18 EP EP09722430.7A patent/EP2277838B1/en not_active Not-in-force
- 2009-03-18 WO PCT/JP2009/001203 patent/WO2009116278A1/en active Application Filing
- 2009-03-18 MY MYPI2010004335A patent/MY158789A/en unknown
- 2009-03-18 CN CN201210177048.0A patent/CN102757180B/en active Active
- 2009-03-18 CN CN2009801098409A patent/CN101977860B/en active Active
- 2009-03-19 TW TW098108960A patent/TWI447086B/en not_active IP Right Cessation
-
2014
- 2014-11-27 JP JP2014239594A patent/JP5815106B2/en active Active
-
2015
- 2015-03-23 US US14/665,857 patent/US9589586B2/en active Active
- 2015-09-18 JP JP2015185072A patent/JP6055057B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102757180B (en) | 2016-03-02 |
| US9016092B2 (en) | 2015-04-28 |
| TWI447086B (en) | 2014-08-01 |
| WO2009116278A1 (en) | 2009-09-24 |
| TW201004885A (en) | 2010-02-01 |
| JP2015091753A (en) | 2015-05-14 |
| MY158789A (en) | 2016-11-15 |
| US20150262605A1 (en) | 2015-09-17 |
| EP2277838A4 (en) | 2011-05-04 |
| JP6055057B2 (en) | 2016-12-27 |
| CN101977860A (en) | 2011-02-16 |
| EP2277838B1 (en) | 2014-01-22 |
| EP2277838A1 (en) | 2011-01-26 |
| JP5815106B2 (en) | 2015-11-17 |
| JPWO2009116278A1 (en) | 2011-07-21 |
| US9589586B2 (en) | 2017-03-07 |
| JP5658030B2 (en) | 2015-01-21 |
| JP2016029010A (en) | 2016-03-03 |
| CN102757180A (en) | 2012-10-31 |
| CN101977860B (en) | 2013-08-21 |
| US20110086241A1 (en) | 2011-04-14 |
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