WO2003038828A3 - Magnetisches aufzeichnungsmedium - Google Patents

Magnetisches aufzeichnungsmedium Download PDF

Info

Publication number
WO2003038828A3
WO2003038828A3 PCT/EP2002/010973 EP0210973W WO03038828A3 WO 2003038828 A3 WO2003038828 A3 WO 2003038828A3 EP 0210973 W EP0210973 W EP 0210973W WO 03038828 A3 WO03038828 A3 WO 03038828A3
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
pigment
recording medium
layer
binding agent
Prior art date
Application number
PCT/EP2002/010973
Other languages
English (en)
French (fr)
Other versions
WO2003038828A2 (de
Inventor
Josef Schelble
Hansjoerg Traub
Stefan Mueller
Johannes Sandrock
Original Assignee
Emtec Magnetics Gmbh
Josef Schelble
Hansjoerg Traub
Stefan Mueller
Johannes Sandrock
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, Josef Schelble, Hansjoerg Traub, Stefan Mueller, Johannes Sandrock filed Critical Emtec Magnetics Gmbh
Priority to AU2002363261A priority Critical patent/AU2002363261A1/en
Publication of WO2003038828A2 publication Critical patent/WO2003038828A2/de
Publication of WO2003038828A3 publication Critical patent/WO2003038828A3/de

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
    • G11B5/714—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 the dimension of the magnetic particles
    • 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
    • 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
    • G11B5/702—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 the bonding agent
    • G11B5/7023—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 the bonding agent containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins

Landscapes

  • Paints Or Removers (AREA)

Abstract

Die Erfindung betrifft ein magnetisches Aufzeichnungsmedium, umfassend a) einen Schichtträger, b) mindestens eine darauf aufgebrachte untere nichtmagnetische Schicht, welche mindestens ein Bindemittel enthält, sowie c) eine auf der unteren Schicht aufgebrachte obere magnetische Schicht, welche, dispergiert in mindestens einem Bindemittel, mindestens ein magnetisches Metall- oder Metalllegierungspigment enthält, das eine Passivierungshülle besitzt, dadurch gekennzeichnet, dass die obere magnetische Schicht eine Trockendicke d von höchstens 300 nm aufweist; das magnetische Metall- oder Metalllegierungspigment eine Gesamtlänge I von höchstens 90 nm besitzt, wobei Länge I'des Metallkerns, Gesamtlänge I des Pigments und die kürzeste Aufzeichnungswellenlänge λ für die magnetische Aufzeichnung auf dem Medium folgender Beziehung gehorchen: I'/I#1- 18/λ und wobei zumindest das Bindemittel der magnetischen Schicht sowohl Chlor- als auch Epoxygruppen enthält; oder chloridfrei ist.
PCT/EP2002/010973 2001-10-29 2002-10-01 Magnetisches aufzeichnungsmedium WO2003038828A2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002363261A AU2002363261A1 (en) 2001-10-29 2002-10-01 Magnetic recording medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001153277 DE10153277A1 (de) 2001-10-29 2001-10-29 Magnetisches Aufzeichnungsmedium
DE10153277.6 2001-10-29

Publications (2)

Publication Number Publication Date
WO2003038828A2 WO2003038828A2 (de) 2003-05-08
WO2003038828A3 true WO2003038828A3 (de) 2003-12-24

Family

ID=7704054

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/010973 WO2003038828A2 (de) 2001-10-29 2002-10-01 Magnetisches aufzeichnungsmedium

Country Status (3)

Country Link
AU (1) AU2002363261A1 (de)
DE (1) DE10153277A1 (de)
WO (1) WO2003038828A2 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520155A2 (de) * 1991-04-25 1992-12-30 Fuji Photo Film Co., Ltd. Magnetischer Aufzeichnungsträger
US6136428A (en) * 1992-01-10 2000-10-24 Imation Corp. Magnetic recording media prepared from magnetic particles having an extremely thin, continuous, amorphous, aluminum hydrous oxide coating
EP1109159A1 (de) * 1999-12-17 2001-06-20 Fuji Photo Film Co., Ltd. Ferromagnetisches Metallpulver und dieses verwendendes magnetisches Aufzeichnungsmedium
US20020064686A1 (en) * 2000-09-20 2002-05-30 Fuji Photo Film Co., Ltd. Magnetic recording medium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520155A2 (de) * 1991-04-25 1992-12-30 Fuji Photo Film Co., Ltd. Magnetischer Aufzeichnungsträger
US6136428A (en) * 1992-01-10 2000-10-24 Imation Corp. Magnetic recording media prepared from magnetic particles having an extremely thin, continuous, amorphous, aluminum hydrous oxide coating
EP1109159A1 (de) * 1999-12-17 2001-06-20 Fuji Photo Film Co., Ltd. Ferromagnetisches Metallpulver und dieses verwendendes magnetisches Aufzeichnungsmedium
US20020064686A1 (en) * 2000-09-20 2002-05-30 Fuji Photo Film Co., Ltd. Magnetic recording medium

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
M.P.MORALS ET.AL.: "Characterisation of advanced metal porticle recording media pigmets", JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 190, 1998, pages 357 - 370, XP002245209 *

Also Published As

Publication number Publication date
AU2002363261A1 (en) 2003-05-12
DE10153277A1 (de) 2003-05-08
WO2003038828A2 (de) 2003-05-08

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