GB2274839B - Amorphous carbon substrate for a magnetic disk and a method of manufacturing the same - Google Patents

Amorphous carbon substrate for a magnetic disk and a method of manufacturing the same

Info

Publication number
GB2274839B
GB2274839B GB9401690A GB9401690A GB2274839B GB 2274839 B GB2274839 B GB 2274839B GB 9401690 A GB9401690 A GB 9401690A GB 9401690 A GB9401690 A GB 9401690A GB 2274839 B GB2274839 B GB 2274839B
Authority
GB
United Kingdom
Prior art keywords
manufacturing
same
magnetic disk
amorphous carbon
carbon substrate
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
Application number
GB9401690A
Other versions
GB2274839A (en
GB9401690D0 (en
Inventor
Kazuo Muramatsu
Nobuhiro Ohta
Shunsuke Takada
Motoharu Sato
Masami Takao
Hiroko Nagata
Satoru Takada
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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 JP2083137A external-priority patent/JPH0713841B2/en
Priority claimed from JP23106990A external-priority patent/JPH04111223A/en
Priority claimed from JP32494190A external-priority patent/JPH04192117A/en
Priority claimed from JP41043490A external-priority patent/JPH0778874B2/en
Priority claimed from JP2410435A external-priority patent/JPH087865B2/en
Priority claimed from JP41043690A external-priority patent/JPH0778875B2/en
Priority claimed from GB9106590A external-priority patent/GB2242423B/en
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of GB9401690D0 publication Critical patent/GB9401690D0/en
Publication of GB2274839A publication Critical patent/GB2274839A/en
Publication of GB2274839B publication Critical patent/GB2274839B/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/53—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/91—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
    • 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
    • G11B5/73923—Organic polymer 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
GB9401690A 1990-03-29 1994-01-28 Amorphous carbon substrate for a magnetic disk and a method of manufacturing the same Expired - Fee Related GB2274839B (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2083137A JPH0713841B2 (en) 1990-03-29 1990-03-29 Texturing method of carbon substrate for magnetic disk
JP23106990A JPH04111223A (en) 1990-08-31 1990-08-31 Carbon substrate for magnetic disk
JP32494190A JPH04192117A (en) 1990-11-26 1990-11-26 Amorphous carbon substrate for magnetic disk
JP2410435A JPH087865B2 (en) 1990-12-12 1990-12-12 Amorphous carbon substrate for magnetic disk
JP41043490A JPH0778874B2 (en) 1990-12-12 1990-12-12 Texture processing method for amorphous carbon substrate for magnetic disk
JP41043690A JPH0778875B2 (en) 1990-12-12 1990-12-12 Texture processing method for amorphous carbon substrate for magnetic disk
GB9106590A GB2242423B (en) 1990-03-29 1991-03-28 Amorphous carbon substrate for a magnetic disk and a method of manufacturing the same

Publications (3)

Publication Number Publication Date
GB9401690D0 GB9401690D0 (en) 1994-03-23
GB2274839A GB2274839A (en) 1994-08-10
GB2274839B true GB2274839B (en) 1994-11-02

Family

ID=27562850

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9401690A Expired - Fee Related GB2274839B (en) 1990-03-29 1994-01-28 Amorphous carbon substrate for a magnetic disk and a method of manufacturing the same

Country Status (1)

Country Link
GB (1) GB2274839B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1271484A3 (en) * 1995-08-22 2003-03-26 Seagate Technology LLC Pulsed laser surface treatments for magnetic recording media

Also Published As

Publication number Publication date
GB2274839A (en) 1994-08-10
GB9401690D0 (en) 1994-03-23

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Legal Events

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

Effective date: 20040328

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20040328