GB2435263A9 - Substrate for a magnetic disk and polishing methodtherefor - Google Patents

Substrate for a magnetic disk and polishing methodtherefor

Info

Publication number
GB2435263A9
GB2435263A9 GB0705021A GB0705021A GB2435263A9 GB 2435263 A9 GB2435263 A9 GB 2435263A9 GB 0705021 A GB0705021 A GB 0705021A GB 0705021 A GB0705021 A GB 0705021A GB 2435263 A9 GB2435263 A9 GB 2435263A9
Authority
GB
United Kingdom
Prior art keywords
methodtherefor
polishing
substrate
magnetic disk
disk
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.)
Granted
Application number
GB0705021A
Other versions
GB2435263A (en
GB0705021D0 (en
GB2435263B (en
Inventor
Shigeo Fujii
Hiroaki Kitayama
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.)
Kao Corp
Original Assignee
Kao Corp
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
Priority claimed from JP2003290666A external-priority patent/JP4707311B2/en
Application filed by Kao Corp filed Critical Kao Corp
Priority to GB0705021A priority Critical patent/GB2435263B/en
Publication of GB0705021D0 publication Critical patent/GB0705021D0/en
Publication of GB2435263A publication Critical patent/GB2435263A/en
Publication of GB2435263A9 publication Critical patent/GB2435263A9/en
Application granted granted Critical
Publication of GB2435263B publication Critical patent/GB2435263B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09G—POLISHING COMPOSITIONS; SKI WAXES
    • C09G1/00—Polishing compositions
    • C09G1/02—Polishing compositions containing abrasives or grinding agents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1454—Abrasive powders, suspensions and pastes for polishing
    • C09K3/1463—Aqueous liquid suspensions
    • 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
    • G11B5/73913—Composites or coated 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy substrates
    • G11B5/73919—Aluminium or titanium elemental or alloy 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73921—Glass or ceramic substrates
GB0705021A 2003-08-08 2004-07-23 Substrate for magnetic disk and polishing method therefor Expired - Fee Related GB2435263B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0705021A GB2435263B (en) 2003-08-08 2004-07-23 Substrate for magnetic disk and polishing method therefor

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2003290666A JP4707311B2 (en) 2003-08-08 2003-08-08 Magnetic disk substrate
GB0416502A GB2405151B (en) 2003-08-08 2004-07-23 Substrate for magnetic disk
GB0705021A GB2435263B (en) 2003-08-08 2004-07-23 Substrate for magnetic disk and polishing method therefor

Publications (4)

Publication Number Publication Date
GB0705021D0 GB0705021D0 (en) 2007-04-25
GB2435263A GB2435263A (en) 2007-08-22
GB2435263A9 true GB2435263A9 (en) 2007-09-12
GB2435263B GB2435263B (en) 2007-11-28

Family

ID=38645855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0705021A Expired - Fee Related GB2435263B (en) 2003-08-08 2004-07-23 Substrate for magnetic disk and polishing method therefor

Country Status (1)

Country Link
GB (1) GB2435263B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8247326B2 (en) * 2008-07-10 2012-08-21 Cabot Microelectronics Corporation Method of polishing nickel-phosphorous

Also Published As

Publication number Publication date
GB2435263A (en) 2007-08-22
GB0705021D0 (en) 2007-04-25
GB2435263B (en) 2007-11-28

Similar Documents

Publication Publication Date Title
GB2383797B (en) Polishing composition for a substrate for a magnetic disk and polishing method employing it
GB2405151B (en) Substrate for magnetic disk
SG117485A1 (en) Magnetic disk apparatus
SG118215A1 (en) Magnetic disk device
SG113516A1 (en) Perpendicular magnetic recording medium and a method for manufacturing the same
SG108947A1 (en) Magnetic recording disk and process for manufacture thereof
EP1813388A4 (en) Polishing tape and polishing method
AU2003277386A1 (en) Perpendicular patterned magnetic media
SG114749A1 (en) Magnetic recording medium and magnetic recording medium substrate
AU2003293730A1 (en) Magnetic logic device
SG112951A1 (en) Perpendicular magnetic recording media
SG111123A1 (en) Perpendicular magnetic recording medium
EP1475958A4 (en) Magnetic recording/reproducing device
AU2003240813A1 (en) Intermediate layer for perpendicular magnetic recording media
GB2406098B (en) Polishing kit for magnetic disk
GB2391104B (en) Thin film magnetic head
GB2395597B (en) Thin film magnetic head
GB2387262B (en) Thin film magnetic head
SG114792A1 (en) Substrate for magnetic recording medium and method for manufacturing same
SG112983A1 (en) Magnetic recording media
GB2382818B (en) Polishing composition for a magnetic disc substrate and polishing process using the same
SG120304A1 (en) Glass substrate for magnetic disks
SG112081A1 (en) Perpendicular recording magnetic disk apparatus
SG103903A1 (en) Magnetic recording medium
EP1316947A4 (en) Magnetic disk substrate and magnetic disk

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20120723