JPH0421249B2 - - Google Patents

Info

Publication number
JPH0421249B2
JPH0421249B2 JP56018506A JP1850681A JPH0421249B2 JP H0421249 B2 JPH0421249 B2 JP H0421249B2 JP 56018506 A JP56018506 A JP 56018506A JP 1850681 A JP1850681 A JP 1850681A JP H0421249 B2 JPH0421249 B2 JP H0421249B2
Authority
JP
Japan
Prior art keywords
magnetic
parts
vinyl chloride
powder
vinyl acetate
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
JP56018506A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57133521A (en
Inventor
Akihiro Matsufuji
Akira Kasuga
Hajime Myatsuka
Masashi Aonuma
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co 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
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP56018506A priority Critical patent/JPS57133521A/ja
Priority to US06/347,619 priority patent/US4431712A/en
Publication of JPS57133521A publication Critical patent/JPS57133521A/ja
Publication of JPH0421249B2 publication Critical patent/JPH0421249B2/ja
Granted 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
    • G11B5/702—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
    • G11B5/7022—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 containing mixtures of polyurethanes or polyisocyanates with other polymers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
JP56018506A 1981-02-10 1981-02-10 Magnetic recording medium Granted JPS57133521A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56018506A JPS57133521A (en) 1981-02-10 1981-02-10 Magnetic recording medium
US06/347,619 US4431712A (en) 1981-02-10 1982-02-10 Magnetic recording medium of ferromagnetic particles and binder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56018506A JPS57133521A (en) 1981-02-10 1981-02-10 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS57133521A JPS57133521A (en) 1982-08-18
JPH0421249B2 true JPH0421249B2 (en, 2012) 1992-04-09

Family

ID=11973505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56018506A Granted JPS57133521A (en) 1981-02-10 1981-02-10 Magnetic recording medium

Country Status (2)

Country Link
US (1) US4431712A (en, 2012)
JP (1) JPS57133521A (en, 2012)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57154618A (en) * 1981-03-19 1982-09-24 Sony Corp Magnetic recording medium
JPS58222433A (ja) * 1982-06-17 1983-12-24 Fuji Photo Film Co Ltd 磁気記録媒体
JPS595424A (ja) * 1982-07-01 1984-01-12 Sony Corp 磁気記録媒体
JPS595423A (ja) * 1982-07-01 1984-01-12 Sony Corp 磁気記録媒体
JPS5930234A (ja) * 1982-08-10 1984-02-17 Fuji Photo Film Co Ltd 磁気記録媒体
JPS5940320A (ja) * 1982-08-30 1984-03-06 Sony Corp 磁気記録媒体
JPS59177727A (ja) * 1983-03-25 1984-10-08 Tdk Corp 磁気記録媒体
JPS59203224A (ja) * 1983-05-02 1984-11-17 Fuji Photo Film Co Ltd 磁気記録媒体
JPS6080122A (ja) * 1983-10-07 1985-05-08 Sony Corp 磁気記録媒体
JPH0618074B2 (ja) * 1984-10-25 1994-03-09 住友化学工業株式会社 磁気記録媒体
JPS61113125A (ja) * 1984-11-06 1986-05-31 Fuji Photo Film Co Ltd 磁気記録媒体
JPS61289522A (ja) * 1985-06-17 1986-12-19 Fuji Photo Film Co Ltd 磁気記録媒体
JPH0618066B2 (ja) * 1985-11-19 1994-03-09 コニカ株式会社 磁気記録媒体
JPS62146432A (ja) * 1985-12-20 1987-06-30 Fuji Photo Film Co Ltd 磁気記録媒体
JPS62146433A (ja) * 1985-12-20 1987-06-30 Fuji Photo Film Co Ltd 磁気記録媒体
JPH0743818B2 (ja) * 1986-05-07 1995-05-15 松下電器産業株式会社 磁気記録媒体
US4868046A (en) * 1986-06-07 1989-09-19 Victor Company Of Japan, Ltd. Magnetic recording mediums comprising a modified vinyl chloride resin binder in at least a magnetic recording layer
US4970127A (en) * 1986-10-20 1990-11-13 Union Carbide Chemicals And Plastics Company Inc. Novel vinyl chloride resins and compositions incorporating such resins
JPH0679370B2 (ja) * 1987-05-06 1994-10-05 富士写真フイルム株式会社 磁気記録媒体
US5153071A (en) * 1988-04-19 1992-10-06 Fuji Photo Film Co., Ltd. Magnetic recording medium wherein the magnetic layer has as the binder system a vinyl chloride copolymer and a polyether polyurethane resin which contains a ring structure
US5178953A (en) * 1990-01-12 1993-01-12 Ampex Media Corporation Magnetic recording media having a binder comprising a low molecular weight high glass transition temperature vinyl polymer
JPH0630139B2 (ja) * 1990-09-21 1994-04-20 コニカ株式会社 磁気記録媒体
DE69413598T2 (de) * 1993-03-22 1999-03-04 Union Carbide Chemicals & Plastics Technology Corp., Danbury, Conn. Magnetischer Aufzeichnungsträger
JP3866074B2 (ja) * 2001-10-12 2007-01-10 富士フイルムホールディングス株式会社 強磁性金属粉末及びその製造方法並びに磁気記録媒体

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50147311A (en, 2012) * 1974-05-15 1975-11-26
JPS585457B2 (ja) * 1978-11-30 1983-01-31 ティーディーケイ株式会社 磁気記録媒体

Also Published As

Publication number Publication date
US4431712A (en) 1984-02-14
JPS57133521A (en) 1982-08-18

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