ES2043077T3 - Medio de registro magnetico. - Google Patents

Medio de registro magnetico.

Info

Publication number
ES2043077T3
ES2043077T3 ES89420400T ES89420400T ES2043077T3 ES 2043077 T3 ES2043077 T3 ES 2043077T3 ES 89420400 T ES89420400 T ES 89420400T ES 89420400 T ES89420400 T ES 89420400T ES 2043077 T3 ES2043077 T3 ES 2043077T3
Authority
ES
Spain
Prior art keywords
mass
magnetic recording
magnetic
binder
particles
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 - Lifetime
Application number
ES89420400T
Other languages
English (en)
Inventor
Antoine Marie Bernard Laine
Bernard Rene Maurice Cadot
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.)
Kodak Pathe SA
Original Assignee
Kodak Pathe SA
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 Kodak Pathe SA filed Critical Kodak Pathe SA
Application granted granted Critical
Publication of ES2043077T3 publication Critical patent/ES2043077T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B5/68—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
    • G11B5/71—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 lubricant
    • 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
    • G11B5/7021—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 a polyurethane or a polyisocyanate

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Liquid Crystal (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

LA INVENCION SE REFIERE A UN MEDIO DE REGISTRO MAGNETICO. EL MEDIO DE REGISTRO MAGNETICO CONTIENE PARTICULAS MAGNETICAS Y UN LIGANTE. ESTE ES UN POLIURETANO TRIDIMENSIONAL ALTAMENTE RETICULADO FORMADO POR UN POLIOL RAMIFICADO, QUE CONTIENE POR LO MENOS 8 % EN MASA DE GRUPOS OH, Y QUE TIENE UN PESO MOLECULAR INFERIOR A 4000, Y DE UN PREPOLIMERO DE ISOCIANATO QUE CONTIENE POR LO MENOS TRES FUNCIONES ISOCIANATO. EN UNA FORMA DE EJECUCION, EL LUBRICANTE ES UN POLITETRAFLUOROETILENO EN POLVO, DEL CUAL POR LO MENOS EL 90 % DE LAS PARTICULAS TIENEN UNA DIMENSION INFERIOR A 3 (MU)M Y ESTA PRESENTE A RAZON DE MENOS DE 2 % EN MASA RESPECTO A LA MASA DE LAS PARTICULAS MAGNETICAS. APLICACION A LA OBTENCION DE UN MEDIO MAGNETICO, QUE ES A LA VEZ, POR UNA PARTE, DURO Y RESISTENTE, Y POR OTRA, COHERENTE Y POCO ABRASIVO.
ES89420400T 1988-10-18 1989-10-17 Medio de registro magnetico. Expired - Lifetime ES2043077T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8814219A FR2639647B1 (fr) 1988-10-18 1988-10-18 Milieu d'enregistrement magnetique

Publications (1)

Publication Number Publication Date
ES2043077T3 true ES2043077T3 (es) 1993-12-16

Family

ID=9371444

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89420400T Expired - Lifetime ES2043077T3 (es) 1988-10-18 1989-10-17 Medio de registro magnetico.

Country Status (7)

Country Link
EP (2) EP0440716A1 (es)
JP (1) JPH04501334A (es)
AT (1) ATE92662T1 (es)
DE (1) DE68908077T2 (es)
ES (1) ES2043077T3 (es)
FR (1) FR2639647B1 (es)
WO (1) WO1990004842A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602006020262D1 (de) * 2006-05-30 2011-04-07 Mbn Nanomaterialia S P A Verfahren zum mechanischen und chemischen Behandeln von Materialen, die zumindestens ein Polymer in flüssigem Zustand enthalten
JP4539723B2 (ja) * 2008-01-21 2010-09-08 Ｄｉｃ株式会社 熱転写用積層体およびこれを用いた磁気記録媒体の製造方法
JP4825278B2 (ja) * 2009-02-27 2011-11-30 Ｄｉｃ株式会社 貼合用積層体およびこれを用いた磁気記録媒体の製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1269660B (de) * 1966-11-10 1968-06-06 Ampex Magnetischer Aufzeichnungstraeger
JPS57143737A (en) * 1981-03-02 1982-09-06 Fuji Photo Film Co Ltd Manufacture of magnetic recording medium
JPS61168532A (ja) * 1984-08-23 1986-07-30 Sakai Chem Ind Co Ltd 磁気記録用バリウムフェライト微結晶の製造方法
FR2605623B1 (fr) * 1986-10-23 1989-06-09 Kodak Pathe Procede de preparation de particules magnetiques d'hexaferrites, particules obtenues et produits les contenant

Also Published As

Publication number Publication date
FR2639647A1 (fr) 1990-06-01
DE68908077T2 (de) 1994-03-10
DE68908077D1 (de) 1993-09-09
ATE92662T1 (de) 1993-08-15
WO1990004842A1 (fr) 1990-05-03
EP0365448A3 (en) 1990-05-09
EP0440716A1 (fr) 1991-08-14
EP0365448B1 (fr) 1993-08-04
FR2639647B1 (fr) 1990-09-21
EP0365448A2 (fr) 1990-04-25
JPH04501334A (ja) 1992-03-05

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