HK1018531A1 - Laser texturing of magnetic recording medium using multiple lens focusing - Google Patents

Laser texturing of magnetic recording medium using multiple lens focusing

Info

Publication number
HK1018531A1
HK1018531A1 HK99103597A HK99103597A HK1018531A1 HK 1018531 A1 HK1018531 A1 HK 1018531A1 HK 99103597 A HK99103597 A HK 99103597A HK 99103597 A HK99103597 A HK 99103597A HK 1018531 A1 HK1018531 A1 HK 1018531A1
Authority
HK
Hong Kong
Prior art keywords
recording medium
magnetic recording
multiple lens
lens focusing
laser texturing
Prior art date
Application number
HK99103597A
Other languages
English (en)
Inventor
Jialuo Jack Xuan
Ga-Lane Chen
Original Assignee
Seagate Technology
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 Seagate Technology filed Critical Seagate Technology
Publication of HK1018531A1 publication Critical patent/HK1018531A1/xx

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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
HK99103597A 1996-05-09 1999-08-19 Laser texturing of magnetic recording medium using multiple lens focusing HK1018531A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1996/006829 WO1997042628A1 (en) 1996-05-09 1996-05-09 Laser texturing of magnetic recording medium using multiple lens focusing

Publications (1)

Publication Number Publication Date
HK1018531A1 true HK1018531A1 (en) 1999-12-24

Family

ID=22255087

Family Applications (1)

Application Number Title Priority Date Filing Date
HK99103597A HK1018531A1 (en) 1996-05-09 1999-08-19 Laser texturing of magnetic recording medium using multiple lens focusing

Country Status (6)

Country Link
US (1) US5968608A (xx)
EP (1) EP0897576B1 (xx)
JP (1) JP3629275B2 (xx)
DE (1) DE69607218T2 (xx)
HK (1) HK1018531A1 (xx)
WO (1) WO1997042628A1 (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6395349B1 (en) 1999-05-25 2002-05-28 Komag, Inc. Method of marking disks
US20030136505A1 (en) * 2002-01-18 2003-07-24 Wimmer Phillip L. Method of preparing a surface for adhesion
CN1962154A (zh) * 2005-11-10 2007-05-16 鸿富锦精密工业（深圳）有限公司 模仁加工装置及加工方法

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938878A (en) * 1970-01-09 1976-02-17 U.S. Philips Corporation Light modulator
FR2077738A1 (xx) * 1970-02-10 1971-11-05 Commissariat Energie Atomique
DE2102027C2 (de) * 1971-01-16 1982-12-30 Ibm Deutschland Gmbh, 7000 Stuttgart Verfahren zur optischen Erkennung der Lage von Grenzlinien und Einrichtungen zur Durchfühung des Verfahrens
US4060306A (en) * 1974-12-16 1977-11-29 American Optical Corporation Achromatic aplanatic condenser
US3988532A (en) * 1975-04-02 1976-10-26 Zenith Radio Corporation Arrangement for compensating duty factor variations in an optical video disc
FR2325951A1 (fr) * 1975-09-29 1977-04-22 Thomson Brandt Procede de diminution de bruit optique et dispositif mettant en oeuvre un tel procede
US4307408A (en) * 1976-04-28 1981-12-22 Canon Kabushiki Kaisha Recording apparatus using coherent light
JPS5885940A (ja) * 1981-11-17 1983-05-23 Hitachi Ltd 光デイスクの自動焦点引込み方法
US5416755A (en) * 1985-02-28 1995-05-16 Canon Kabushiki Kaisha Optical pickup using split beams impinging on different photo-detector areas
US4724219A (en) * 1986-07-16 1988-02-09 Sprague Electric Company Radiation melting of semiconductor surface areas through a remote mask
US5120927A (en) * 1988-06-03 1992-06-09 Insite Peripherals, Inc. High track density media with optical servo tracks and method and apparatus for inscribing the tracks on the media
JPH083910B2 (ja) * 1989-01-13 1996-01-17 シャープ株式会社 光ピックアップ装置
US5352495A (en) * 1989-02-16 1994-10-04 The Wiggins Teape Group Limited Treatment of a surface by laser energy
US5202810A (en) * 1989-04-27 1993-04-13 Hitachi, Ltd. Magnetic disk having an improved surface configuration
US5062021A (en) * 1990-03-12 1991-10-29 Magnetic Peripherals Inc. Selectively textured magnetic recording media
US5166006A (en) * 1991-06-03 1992-11-24 Hmt Technology Corporation Textured thin-film substrate and method
JP3075381B2 (ja) * 1992-02-17 2000-08-14 株式会社ニコン 投影露光装置及び転写方法
DE69328385T2 (de) * 1992-06-19 2000-10-19 Sony Corp., Tokio/Tokyo Optisches Abtastgerät
TW300879B (xx) * 1993-11-10 1997-03-21 Ibm
US5614114A (en) * 1994-07-18 1997-03-25 Electro Scientific Industries, Inc. Laser system and method for plating vias
US5582878A (en) * 1995-03-24 1996-12-10 Showa Denko Kabushiki Kaisha Process for producing magnetic recording medium
US5691535A (en) * 1996-02-08 1997-11-25 Eastman Kodak Company Ganged laser scanning system which corrects beam alignment along a bow-tie path
US5783797A (en) * 1996-05-09 1998-07-21 Seagate Technology, Inc. Laser texturing of magnetic recording medium using a crystal material
US5980997A (en) * 1996-06-03 1999-11-09 Komag, Incorporated Method for preparing a substrate for a magnetic disk

Also Published As

Publication number Publication date
DE69607218T2 (de) 2000-07-13
EP0897576A1 (en) 1999-02-24
WO1997042628A1 (en) 1997-11-13
JP3629275B2 (ja) 2005-03-16
EP0897576B1 (en) 2000-03-15
JP2000509870A (ja) 2000-08-02
DE69607218D1 (de) 2000-04-20
US5968608A (en) 1999-10-19

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20050509