BR9913471A - Meio de gravação magnético - Google Patents

Meio de gravação magnético

Info

Publication number
BR9913471A
BR9913471A BR9913471-3A BR9913471A BR9913471A BR 9913471 A BR9913471 A BR 9913471A BR 9913471 A BR9913471 A BR 9913471A BR 9913471 A BR9913471 A BR 9913471A
Authority
BR
Brazil
Prior art keywords
recording
bottom layer
recording medium
magnetic recording
supports
Prior art date
Application number
BR9913471-3A
Other languages
English (en)
Inventor
Andreas Ilmer
Werner Lenz
Ria Kress
Peter Heilmann
Helmut Jakusch
Erich Hoffmann
Ronald Veitch
Original Assignee
Emtec Magnetics Gmbh
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 Emtec Magnetics Gmbh filed Critical Emtec Magnetics Gmbh
Publication of BR9913471A publication Critical patent/BR9913471A/pt

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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/716—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by two or more magnetic layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers

Landscapes

  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)

Abstract

"MEIO DE GRAVAçãO MAGNéTICO". Métodos de gravação digitais, nos quais o meio de gravação não passa por um campo de apagamento anteriormente à gravação, tornaram-se recentemente conhecidos. Tais meios de gravação precisam consequentemente ter um bom comportamento de sobregravação. Foi verificado que este requerimento é satisfeito por meios de gravação compostos de duas camadas, a camada superior contendo um pó metálico ou pó de liga metálica e tendo uma espessura de menos que 0,3 Ám e a camada inferior contendo um pigmento magnético. A força coercitiva da camada inferior não é mais que dois terços da força coercitiva da camada superior e a indução da camada inferior é de, pelo menos 32 KA/m.
BR9913471-3A 1998-08-26 1999-07-24 Meio de gravação magnético BR9913471A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19838799A DE19838799A1 (de) 1998-08-26 1998-08-26 Magnetischer Aufzeichnungsträger mit hoher Aufzeichnungsdichte
PCT/EP1999/005309 WO2000013176A1 (de) 1998-08-26 1999-07-24 Magnetischer aufzeichnungsträger mit hoher aufzeichnungsdichte

Publications (1)

Publication Number Publication Date
BR9913471A true BR9913471A (pt) 2001-06-05

Family

ID=7878788

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9913471-3A BR9913471A (pt) 1998-08-26 1999-07-24 Meio de gravação magnético

Country Status (10)

Country Link
EP (1) EP1153388B1 (pt)
JP (1) JP2002524811A (pt)
KR (1) KR20010072987A (pt)
CN (1) CN1312939A (pt)
AT (1) ATE236446T1 (pt)
AU (1) AU756079B2 (pt)
BR (1) BR9913471A (pt)
DE (2) DE19838799A1 (pt)
HK (1) HK1038824A1 (pt)
WO (1) WO2000013176A1 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001023145A (ja) * 1999-07-05 2001-01-26 Sony Corp 磁気記録媒体
DE10017490A1 (de) 2000-04-07 2001-10-11 Emtec Magnetics Gmbh Magnetisches Aufzeichnungsmedium

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5817539A (ja) * 1981-07-21 1983-02-01 Sony Corp 磁気記録媒体
US4992330A (en) * 1988-12-12 1991-02-12 Konica Corporation Magnetic recording medium
DE69019220T3 (de) * 1989-03-28 2001-04-05 Konishiroku Photo Ind Magnetischer Aufzeichnungsträger mit verbesserter elektromagnetischer Umwandlungscharakteristik und Schutz gegen Umwelteinflüsse.
JPH04313811A (ja) * 1990-12-12 1992-11-05 Konica Corp 磁気記録媒体
JPH04251434A (ja) * 1990-12-28 1992-09-07 Konica Corp 磁気記録媒体
JP2566096B2 (ja) * 1992-04-14 1996-12-25 富士写真フイルム株式会社 磁気記録媒体
US5455104A (en) * 1992-12-02 1995-10-03 Konica Corporation Magnetic recording medium
JP3547022B2 (ja) * 1994-12-16 2004-07-28 富士写真フイルム株式会社 磁気記録媒体
DE19747068A1 (de) * 1997-10-24 1999-04-29 Emtec Magnetics Gmbh Magnetischer Aufzeichnungsträger mit hoher Aufzeichnungsdichte und Verfahren zu seiner Herstellung

Also Published As

Publication number Publication date
JP2002524811A (ja) 2002-08-06
AU5506899A (en) 2000-03-21
WO2000013176A1 (de) 2000-03-09
DE19838799A1 (de) 2000-03-02
KR20010072987A (ko) 2001-07-31
EP1153388B1 (de) 2003-04-02
CN1312939A (zh) 2001-09-12
DE59904894D1 (de) 2003-05-08
HK1038824A1 (zh) 2002-03-28
AU756079B2 (en) 2003-01-02
ATE236446T1 (de) 2003-04-15
EP1153388A1 (de) 2001-11-14

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 5A, 6A, 7A E 8A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1911 DE 21/08/2007.