DE3789932T2 - Glassubstrat für eine Magnetplatte und Verfahren zu seiner Herstellung. - Google Patents
Glassubstrat für eine Magnetplatte und Verfahren zu seiner Herstellung.Info
- Publication number
- DE3789932T2 DE3789932T2 DE3789932T DE3789932T DE3789932T2 DE 3789932 T2 DE3789932 T2 DE 3789932T2 DE 3789932 T DE3789932 T DE 3789932T DE 3789932 T DE3789932 T DE 3789932T DE 3789932 T2 DE3789932 T2 DE 3789932T2
- Authority
- DE
- Germany
- Prior art keywords
- manufacture
- glass substrate
- magnetic disk
- disk
- magnetic
- 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
Links
Classifications
-
- 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
- G11B5/62—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
- G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23924986 | 1986-10-09 | ||
JP61294927A JPH07101507B2 (ja) | 1986-10-09 | 1986-12-12 | 磁気デイスク用基板と製造法 |
JP19373187A JP2605292B2 (ja) | 1987-08-04 | 1987-08-04 | 磁気ディスク用基板の製造方法 |
JP62224034A JP2737901B2 (ja) | 1987-09-09 | 1987-09-09 | 磁気ディスク用ガラス基板の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3789932D1 DE3789932D1 (de) | 1994-07-07 |
DE3789932T2 true DE3789932T2 (de) | 1995-02-09 |
Family
ID=27475668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3789932T Expired - Fee Related DE3789932T2 (de) | 1986-10-09 | 1987-10-07 | Glassubstrat für eine Magnetplatte und Verfahren zu seiner Herstellung. |
Country Status (3)
Country | Link |
---|---|
US (2) | US4833001A (de) |
EP (1) | EP0263512B1 (de) |
DE (1) | DE3789932T2 (de) |
Families Citing this family (68)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0263512B1 (de) * | 1986-10-09 | 1994-06-01 | Asahi Glass Company Ltd. | Glassubstrat für eine Magnetplatte und Verfahren zu seiner Herstellung |
JP2886872B2 (ja) * | 1989-01-13 | 1999-04-26 | 株式会社日立製作所 | 磁気ディスク用基板および磁気ディスク |
US5494721A (en) * | 1989-01-13 | 1996-02-27 | Hitachi, Ltd. | Magnetic disc substrate |
JPH03245322A (ja) * | 1989-03-29 | 1991-10-31 | Asahi Glass Co Ltd | 磁気ディスク用ガラス基板の製造方法 |
JPH041922A (ja) * | 1990-04-18 | 1992-01-07 | Hitachi Ltd | 面内磁気記録媒体及び磁気記憶装置 |
US5353278A (en) * | 1990-05-08 | 1994-10-04 | Sharp Kabushiki Kaisha | Magneto-optical disk and method of manufacturing the same |
JPH04205916A (ja) * | 1990-11-30 | 1992-07-28 | Victor Co Of Japan Ltd | 磁気記録媒体 |
JPH05114127A (ja) * | 1991-10-23 | 1993-05-07 | Hitachi Ltd | 磁気デイスク及びその製造方法並びに磁気デイスク装置 |
SG45390A1 (en) * | 1992-07-09 | 1998-01-16 | Pilkington Plc | Glass substrate for a magnet disc and manufacture thereof |
KR940007790A (ko) * | 1992-09-02 | 1994-04-28 | 미야베 요시카즈 | 자기 디스크용 기판, 그의 제조방법 및 상기 기판을 포함하는 자기 디스크의 제조방법 |
US5482497A (en) * | 1992-12-30 | 1996-01-09 | International Business Machines Corporation | Method and apparatus for texturing zones of a magnetic disk |
US5626935A (en) * | 1993-05-19 | 1997-05-06 | Kabushiki Kaisya Ohara | Magnetic disk substrate and method for manufacturing the same |
US5632942A (en) * | 1993-05-24 | 1997-05-27 | Industrial Technoology Research Institute | Method for preparing multilayer ceramic/glass substrates with electromagnetic shielding |
JPH076349A (ja) * | 1993-06-18 | 1995-01-10 | Kao Corp | 磁気記録媒体用基板及びその製造方法並びに磁気記録媒体 |
TW279972B (de) * | 1993-06-21 | 1996-07-01 | Komag Inc | |
US5569518A (en) * | 1993-07-07 | 1996-10-29 | Ag Technology Co., Ltd. | Glass substrate for a magnetic disk with roughened edges |
US5599590A (en) * | 1993-07-16 | 1997-02-04 | Kobe Steel Usa Inc. | Texture treatment for carbon substrate and for carbon overcoat layer of magnetic disks |
JPH0785463A (ja) * | 1993-09-20 | 1995-03-31 | A G Technol Kk | 磁気ディスク |
GB9400259D0 (en) * | 1994-01-07 | 1994-03-02 | Pilkington Plc | Substrate for a magnetic disc and manufacture thereof |
US6236542B1 (en) | 1994-01-21 | 2001-05-22 | International Business Machines Corporation | Substrate independent superpolishing process and slurry |
US5744208A (en) * | 1994-06-24 | 1998-04-28 | Corning Incorporated | Glass-ceramics containing lithium disilicate and tridymite |
US5871621A (en) | 1994-09-27 | 1999-02-16 | Komag, Incorporated | Method of fabricating a textured magnetic storage disk |
US5871654A (en) * | 1995-03-30 | 1999-02-16 | Ag Technology Co., Ltd. | Method for producing a glass substrate for a magnetic disk |
GB2299991B (en) * | 1995-04-20 | 1998-09-09 | Ag Technology Corp | Glass substrate for magnetic disk |
US5599632A (en) * | 1995-05-10 | 1997-02-04 | Akashic Memories Corporation | Carbon seedlayer on non-metallic substrates for magnetic recording media |
WO1996037885A1 (de) * | 1995-05-26 | 1996-11-28 | International Business Machines Corporation | Direkt kontaktierbare platte für vertikale magnetische datenspeicherung |
JPH09152935A (ja) * | 1995-09-26 | 1997-06-10 | Narumi China Corp | マウスパッド |
MY113928A (en) * | 1995-10-25 | 2002-06-29 | Showa Denko Kk | Magnetic disc and data writing/reading-out method |
US6057984A (en) * | 1995-10-25 | 2000-05-02 | Mitsubishi Chemical Corporation | Method for data writing/read-out using a contact start and stop system |
JP2770806B2 (ja) * | 1995-12-13 | 1998-07-02 | 日本電気株式会社 | 磁気記録媒体 |
US5980997A (en) * | 1996-06-03 | 1999-11-09 | Komag, Incorporated | Method for preparing a substrate for a magnetic disk |
US6103404A (en) * | 1996-06-03 | 2000-08-15 | Komag, Inc. | Laser textured magnetic disk comprising NiNb |
JP3930113B2 (ja) * | 1996-08-30 | 2007-06-13 | Hoya株式会社 | 磁気ディスク用ガラス基板 |
US6132843A (en) * | 1996-11-14 | 2000-10-17 | Nippon Sheet Glass Do., Ltd. | Glass substrate for magnetic disks |
SG84541A1 (en) | 1998-08-19 | 2001-11-20 | Hoya Corp | Glass substrate for magnetic recording medium, magnetic recording medium, and method of manufacturing the same |
US6143375A (en) * | 1999-01-28 | 2000-11-07 | Komag, Incorporated | Method for preparing a substrate for a magnetic disk |
BR0008208A (pt) | 1999-02-12 | 2002-02-19 | Gen Electric | Meios de armazenamento de dados |
US6553788B1 (en) * | 1999-02-23 | 2003-04-29 | Nippon Sheet Glass Co., Ltd. | Glass substrate for magnetic disk and method for manufacturing |
US6395634B1 (en) * | 1999-03-31 | 2002-05-28 | Hoya Corporation | Glass substrate for magnetic recording medium, magnetic recording medium, and method of manufacturing the same |
JP3959588B2 (ja) * | 1999-05-13 | 2007-08-15 | 日本板硝子株式会社 | 情報記録媒体用ガラス基板、情報記録媒体用ガラス基板の製造方法及び情報記録媒体 |
US6363599B1 (en) | 1999-08-04 | 2002-04-02 | Komag, Inc. | Method for manufacturing a magnetic disk including a glass substrate |
US6441999B1 (en) | 1999-08-27 | 2002-08-27 | Seagate Technology Llc | Wear durability using high wear-resistant slip pads |
US6391213B1 (en) | 1999-09-07 | 2002-05-21 | Komag, Inc. | Texturing of a landing zone on glass-based substrates by a chemical etching process |
US6664503B1 (en) | 1999-09-07 | 2003-12-16 | Asahi Glass Company, Ltd. | Method for manufacturing a magnetic disk |
US6795274B1 (en) | 1999-09-07 | 2004-09-21 | Asahi Glass Company, Ltd. | Method for manufacturing a substantially circular substrate by utilizing scribing |
US6482330B1 (en) * | 1999-10-01 | 2002-11-19 | Komag, Inc. | Method for manufacturing a data storage card |
US6454821B1 (en) * | 2000-06-21 | 2002-09-24 | Praxair S. T. Technology, Inc. | Polishing composition and method |
JP4034056B2 (ja) * | 2000-09-13 | 2008-01-16 | 日本板硝子株式会社 | 非晶質材料の加工方法 |
EP1427541B1 (de) * | 2001-04-19 | 2010-11-17 | SABIC Innovative Plastics IP B.V. | Zentrifugalbeschichtungsverfahren |
US6530258B2 (en) * | 2001-07-23 | 2003-03-11 | International Business Machines Corporation | Disk drive laser melt bump disk for accurate glide calibration and certification processing |
US8512580B2 (en) * | 2001-09-21 | 2013-08-20 | Lg Display Co., Ltd. | Method of fabricating thin liquid crystal display device |
JP2003212603A (ja) * | 2002-01-18 | 2003-07-30 | Nippon Sheet Glass Co Ltd | 情報記録媒体用ガラス基板の製造方法 |
JP4002154B2 (ja) * | 2002-08-13 | 2007-10-31 | 東芝松下ディスプレイテクノロジー株式会社 | 液晶表示素子の製造方法およびその装置 |
JP2004265461A (ja) * | 2003-01-31 | 2004-09-24 | Nippon Sheet Glass Co Ltd | 情報記録媒体用ガラス基板及びその製造方法 |
US7250114B2 (en) * | 2003-05-30 | 2007-07-31 | Lam Research Corporation | Methods of finishing quartz glass surfaces and components made by the methods |
JP4079152B2 (ja) * | 2005-01-25 | 2008-04-23 | 旭硝子株式会社 | ドーナツ状ガラス基板を作成する方法 |
JP2006294099A (ja) * | 2005-04-07 | 2006-10-26 | Asahi Glass Co Ltd | 磁気記録媒体用ガラス基板の周面研磨装置及び製造方法 |
WO2008156176A1 (ja) * | 2007-06-20 | 2008-12-24 | Asahi Glass Company, Limited | フッ素化剤による酸化物ガラスの表面処理方法 |
JP5297321B2 (ja) * | 2008-10-07 | 2013-09-25 | Hoya株式会社 | 磁気ディスク用ガラス基板の製造方法 |
EP2698356B1 (de) * | 2011-04-15 | 2018-06-06 | Asahi Glass Company, Limited | Reflexionshemmendes glassubstrat |
US10040718B2 (en) | 2012-11-02 | 2018-08-07 | Corning Incorporated | Methods to texture opaque, colored and translucent materials |
US9750322B2 (en) | 2015-03-08 | 2017-09-05 | Apple Inc. | Co-molded ceramic and polymer structure |
US10703680B2 (en) | 2015-05-25 | 2020-07-07 | Apple Inc. | Fiber-reinforced ceramic matrix composite for electronic devices |
US11104616B2 (en) | 2015-09-30 | 2021-08-31 | Apple Inc. | Ceramic having a residual compressive stress for use in electronic devices |
US11604514B2 (en) | 2016-04-14 | 2023-03-14 | Apple Inc. | Substrate having a visually imperceptible texture for providing variable coefficients of friction between objects |
US10264690B2 (en) | 2016-09-01 | 2019-04-16 | Apple Inc. | Ceramic sintering for uniform color for a housing of an electronic device |
US11088718B2 (en) | 2016-09-06 | 2021-08-10 | Apple Inc. | Multi-colored ceramic housings for an electronic device |
US10420226B2 (en) | 2016-09-21 | 2019-09-17 | Apple Inc. | Yttria-sensitized zirconia |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3466156A (en) * | 1966-12-01 | 1969-09-09 | Ncr Co | Magnetic record members |
US3516860A (en) * | 1967-08-31 | 1970-06-23 | Singer Co | Method of forming a magnetic recording medium |
US3938978A (en) * | 1973-03-22 | 1976-02-17 | Ppg Industries, Inc. | Method of making crystallized glass |
US4411963A (en) * | 1976-10-29 | 1983-10-25 | Aine Harry E | Thin film recording and method of making |
JPS5584045A (en) * | 1978-12-19 | 1980-06-24 | Nec Corp | Magnetic memory substance and its manufacture |
DE3000954C2 (de) * | 1980-01-12 | 1982-04-22 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Verfahren zum Ätzen von Glasoberflächen, insbesondere bei der Glasfaser-Lichtleiter-Herstellung |
US4274907A (en) * | 1980-05-08 | 1981-06-23 | The United States Of America As Represented By The Secretary Of The Army | Method of chemically polishing a doubly rotated quartz plate |
JPS5924958A (ja) * | 1982-07-27 | 1984-02-08 | Sumitomo Special Metals Co Ltd | 薄膜磁気ヘッド用基板の製造方法 |
DE3370710D1 (en) * | 1982-11-19 | 1987-05-07 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
JPS6035333A (ja) * | 1983-08-08 | 1985-02-23 | Kao Corp | 磁気ディスク用基板 |
JPS60136035A (ja) * | 1983-12-22 | 1985-07-19 | Fujitsu Ltd | 磁気デイスクの製造方法 |
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 |
ATE44837T1 (de) * | 1985-03-29 | 1989-08-15 | Siemens Ag | Senkrecht zu magnetisierendes aufzeichnungsmedium und verfahren zu dessen herstellung. |
JPS6226623A (ja) * | 1985-07-26 | 1987-02-04 | Hoya Corp | 磁気記録媒体 |
JPS6243819A (ja) * | 1985-08-22 | 1987-02-25 | Tdk Corp | 磁気記録媒体 |
JPS62252517A (ja) * | 1986-04-25 | 1987-11-04 | Victor Co Of Japan Ltd | 磁気記録媒体 |
EP0263512B1 (de) * | 1986-10-09 | 1994-06-01 | Asahi Glass Company Ltd. | Glassubstrat für eine Magnetplatte und Verfahren zu seiner Herstellung |
JPS63160013A (ja) * | 1986-12-23 | 1988-07-02 | Asahi Glass Co Ltd | 磁気デイスク用基板の製造法 |
US4876117A (en) * | 1988-02-04 | 1989-10-24 | Domain Technology | Method and coating transition metal oxide on thin film magnetic disks |
-
1987
- 1987-10-07 EP EP87114663A patent/EP0263512B1/de not_active Expired - Lifetime
- 1987-10-07 DE DE3789932T patent/DE3789932T2/de not_active Expired - Fee Related
- 1987-10-08 US US07/105,612 patent/US4833001A/en not_active Expired - Fee Related
-
1989
- 1989-03-29 US US07/329,993 patent/US5087481A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3789932D1 (de) | 1994-07-07 |
US4833001A (en) | 1989-05-23 |
US5087481A (en) | 1992-02-11 |
EP0263512B1 (de) | 1994-06-01 |
EP0263512A3 (en) | 1989-11-15 |
EP0263512A2 (de) | 1988-04-13 |
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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 |