GB9612880D0 - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
GB9612880D0
GB9612880D0 GBGB9612880.6A GB9612880A GB9612880D0 GB 9612880 D0 GB9612880 D0 GB 9612880D0 GB 9612880 A GB9612880 A GB 9612880A GB 9612880 D0 GB9612880 D0 GB 9612880D0
Authority
GB
United Kingdom
Prior art keywords
recording medium
magnetic recording
magnetic
medium
recording
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
GBGB9612880.6A
Other versions
GB2302980B (en
GB2302980A (en
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 JP17119895A external-priority patent/JPH0927108A/en
Priority claimed from JP7171199A external-priority patent/JPH0927109A/en
Application filed by Kao Corp filed Critical Kao Corp
Publication of GB9612880D0 publication Critical patent/GB9612880D0/en
Publication of GB2302980A publication Critical patent/GB2302980A/en
Application granted granted Critical
Publication of GB2302980B publication Critical patent/GB2302980B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/657—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing inorganic, non-oxide compound of Si, N, P, B, H or C, e.g. in metal alloy or compound
    • 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
    • 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
    • G11B5/7369—Two or more non-magnetic underlayers, e.g. seed layers or barrier 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/855—Coating only part of a support with a magnetic layer
GB9612880A 1995-07-06 1996-06-19 Magnetic recording medium Expired - Fee Related GB2302980B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP17119895A JPH0927108A (en) 1995-07-06 1995-07-06 Magnetic recording medium
JP7171199A JPH0927109A (en) 1995-07-06 1995-07-06 Magnetic recording medium

Publications (3)

Publication Number Publication Date
GB9612880D0 true GB9612880D0 (en) 1996-08-21
GB2302980A GB2302980A (en) 1997-02-05
GB2302980B GB2302980B (en) 1998-01-14

Family

ID=26493997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9612880A Expired - Fee Related GB2302980B (en) 1995-07-06 1996-06-19 Magnetic recording medium

Country Status (1)

Country Link
GB (1) GB2302980B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2169398C1 (en) * 2000-02-11 2001-06-20 Общество с ограниченной ответственностью "ЛабИНТЕХ" (Лаборатория ионных нанотехнологий) Magnetic medium production method
US6921585B2 (en) 2002-05-15 2005-07-26 Imation Corp. Perpendicular magnetic recording media with an amorphous underlayer
AU2003212804A1 (en) 2002-06-21 2004-01-06 Seagate Technology Llc Multilayer magnetic recording media
US6953629B2 (en) 2003-06-30 2005-10-11 Imation Corp. NiCr and NiFeCr seed layers for perpendicular magnetic recording media
US7158346B2 (en) 2003-12-23 2007-01-02 Seagate Technology Llc Heat assisted magnetic recording film including superparamagnetic nanoparticles dispersed in an antiferromagnetic or ferrimagnetic matrix
US7704614B2 (en) 2006-10-20 2010-04-27 Seagate Technology Llc Process for fabricating patterned magnetic recording media

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4803577A (en) * 1985-06-12 1989-02-07 Tdk Corporation Vertical magnetic recording system using rigid disk
US4851289A (en) * 1987-01-30 1989-07-25 Fuji Photo Film Co., Ltd. Magnetic recording medium

Also Published As

Publication number Publication date
GB2302980B (en) 1998-01-14
GB2302980A (en) 1997-02-05

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Legal Events

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

Effective date: 20000619