JPS57198539A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57198539A
JPS57198539A JP56082783A JP8278381A JPS57198539A JP S57198539 A JPS57198539 A JP S57198539A JP 56082783 A JP56082783 A JP 56082783A JP 8278381 A JP8278381 A JP 8278381A JP S57198539 A JPS57198539 A JP S57198539A
Authority
JP
Japan
Prior art keywords
magnetic
recording medium
magnetic recording
paint
zeolite
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
JP56082783A
Other languages
Japanese (ja)
Inventor
Kiminori Tamai
Shinji Hayama
Hirokazu Kanbe
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP56082783A priority Critical patent/JPS57198539A/en
Publication of JPS57198539A publication Critical patent/JPS57198539A/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
    • G11B5/708—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 addition of non-magnetic particles to the layer

Landscapes

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

Abstract

PURPOSE:To prevent the peeling of a magnetic layer by adding zeolite to the magnetic layer. CONSTITUTION:To magnetic paint which consists of magnetic powder of gamma- Fe2O3, etc., a binder of a copolymer of vinyl chloride, vinyl acetate, vinyl alcohol, etc., a solvent, and other additives, zeolite having the property of acquiring sulfuric acid ions and expressed by general formula xM2/nO.Al2O3.ySiO2. zH2O (where M is alkali metal or alkaline earth metal and (n) is its valency) is added by 0.1-5% for the magnetic powder, and a base such as a polyethylene terephthalate film is coated with the paint, thus obtaining a magnetic recording medium.
JP56082783A 1981-05-30 1981-05-30 Magnetic recording medium Pending JPS57198539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56082783A JPS57198539A (en) 1981-05-30 1981-05-30 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56082783A JPS57198539A (en) 1981-05-30 1981-05-30 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57198539A true JPS57198539A (en) 1982-12-06

Family

ID=13784008

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56082783A Pending JPS57198539A (en) 1981-05-30 1981-05-30 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57198539A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6182328A (en) * 1984-09-29 1986-04-25 Konishiroku Photo Ind Co Ltd Composition for magnetic recording

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6182328A (en) * 1984-09-29 1986-04-25 Konishiroku Photo Ind Co Ltd Composition for magnetic recording

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