JPS57141022A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57141022A
JPS57141022A JP2449481A JP2449481A JPS57141022A JP S57141022 A JPS57141022 A JP S57141022A JP 2449481 A JP2449481 A JP 2449481A JP 2449481 A JP2449481 A JP 2449481A JP S57141022 A JPS57141022 A JP S57141022A
Authority
JP
Japan
Prior art keywords
magnetic
binder
recording medium
magnetic layer
gelling
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.)
Pending
Application number
JP2449481A
Other languages
Japanese (ja)
Inventor
Sadamu Kuze
Masayoshi Kawarai
Takeshi Matsuura
Seiji Wataya
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell 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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP2449481A priority Critical patent/JPS57141022A/en
Publication of JPS57141022A publication Critical patent/JPS57141022A/en
Pending 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
    • G11B5/7023—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

Abstract

PURPOSE:To obtain a long-life magnetic recording medium superior in electromagnetic conversion characteristic and surface smoothness, by adding a liquid epoxy compound to a binder containing cellulosic resin for binding metallic magnetic powder to suppress thickening and gelling in the coating work of a magnetic layer. CONSTITUTION:A binder containing 1-50wt% liquid epoxy resin, especially, cycloaliphatic epoxy resin together with cellulosic binder such as nitrocellulose is used as the binder for metallic magnetic powder. Polyurethane elastomer and polyisocyanate may be added for the purpose of enhancing the flexibility and the strength of a magnetic layer. Thus, thickening and gelling of a magnetic coating material are suppressed to improve the workability in the coating work of the magnetic layer, and a long-life magnetic tape or the like superior in electromagnetic conversion characteristic and surface smoothness is obtained.
JP2449481A 1981-02-20 1981-02-20 Magnetic recording medium Pending JPS57141022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2449481A JPS57141022A (en) 1981-02-20 1981-02-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2449481A JPS57141022A (en) 1981-02-20 1981-02-20 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57141022A true JPS57141022A (en) 1982-09-01

Family

ID=12139724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2449481A Pending JPS57141022A (en) 1981-02-20 1981-02-20 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57141022A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8939757B2 (en) 2012-05-08 2015-01-27 Nissei Plastic Industrial Co., Ltd. Liquid resin molding system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8939757B2 (en) 2012-05-08 2015-01-27 Nissei Plastic Industrial Co., Ltd. Liquid resin molding system

Similar Documents

Publication Publication Date Title
DE3564743D1 (en) Solderable conductive compositions, their use as coatings on substrates, and compositions useful in forming them
AU564748B2 (en) Phosphated epoxy and acrylic resin coating composition
JPS5744227A (en) Magnetic recording medium
JPS5567939A (en) Magnetic recording medium
JPS5573928A (en) Magnetic recording medium
JPS578925A (en) Magnetic recording medium
JPS57141022A (en) Magnetic recording medium
JPS5629839A (en) Magnetic recording medium
JPS5597026A (en) Magnetic recording medium
JPS56134319A (en) Magnetic recording medium
JPS5746325A (en) Magnetic recording medium
JPS57141018A (en) Magnetic recording medium
JPS57141024A (en) Magnetic recording medium
JPS57141016A (en) Magnetic recording medium
JPS57158025A (en) Magnetic recording medium
JPS5528507A (en) Magnetic recording tape
JPS57141023A (en) Magnetic recording medium
JPS5746324A (en) Magnetic recording medium
JPS56143533A (en) Magnetic recording body
EP0260009A3 (en) Water-compatible coating composition
JPS57210440A (en) Magnetic recording medium
JPS5674835A (en) Magnetic recording medium
JPS53143302A (en) Magnetic recording medium
JPS56101646A (en) Magnetic recording medium
JPS57152541A (en) Magnetic recording medium