JPS5758229A - Magnetic painting material for magnetic recording medium - Google Patents

Magnetic painting material for magnetic recording medium

Info

Publication number
JPS5758229A
JPS5758229A JP55132142A JP13214280A JPS5758229A JP S5758229 A JPS5758229 A JP S5758229A JP 55132142 A JP55132142 A JP 55132142A JP 13214280 A JP13214280 A JP 13214280A JP S5758229 A JPS5758229 A JP S5758229A
Authority
JP
Japan
Prior art keywords
magnetic
painting material
recording medium
magnetic recording
ferrite powder
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.)
Granted
Application number
JP55132142A
Other languages
Japanese (ja)
Other versions
JPS6343808B2 (en
Inventor
Hirohisa Kato
Toshihiko Oguchi
Akio Ishizawa
Mitsuo Yaegashi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55132142A priority Critical patent/JPS5758229A/en
Publication of JPS5758229A publication Critical patent/JPS5758229A/en
Publication of JPS6343808B2 publication Critical patent/JPS6343808B2/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
    • G11B5/7013—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 dispersing agent

Landscapes

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

Abstract

PURPOSE:To prevent a magnetic recording medium from charging and to make the medium high lubricant, by containing a resin bonding agent, hexagonal ferrite powder and an interfacial active agent of a specific phosphoric acid ester compound. CONSTITUTION:A magnetic painting material is obtained by adding and mixing hexagonal system ferrite powder (example: barium ferrite and an interfacial active agent of a phosphoric acid ester compound by the expressionIor the expression II (R denotes hydrocarbon of C2-12; (n) denotes 3-9), to a solution obtained by dissolving a resin bonding agent (example: vinyl chloride-vinyl acetate copolymer) into an organic solvent. Subsequently, this painting material is applied on the surface of a nonmagnetic field so as to be aligned with the direction of the magnetic field, and after that, it is dried and a magnetic recording medium is obtained. In this way, in the painting material, each ferrite particle exists independently, its orientation property in the magnetic field is raised enough, and it is contributed to a flowing effect, a leveling effect and a high filling effect of ferrite powder.
JP55132142A 1980-09-22 1980-09-22 Magnetic painting material for magnetic recording medium Granted JPS5758229A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55132142A JPS5758229A (en) 1980-09-22 1980-09-22 Magnetic painting material for magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55132142A JPS5758229A (en) 1980-09-22 1980-09-22 Magnetic painting material for magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS5758229A true JPS5758229A (en) 1982-04-07
JPS6343808B2 JPS6343808B2 (en) 1988-09-01

Family

ID=15074337

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55132142A Granted JPS5758229A (en) 1980-09-22 1980-09-22 Magnetic painting material for magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5758229A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5994231A (en) * 1982-11-22 1984-05-30 Fuji Photo Film Co Ltd Magnetic recording medium
JPS61107533A (en) * 1984-10-31 1986-05-26 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPS61250829A (en) * 1985-04-30 1986-11-07 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPS6252718A (en) * 1985-08-30 1987-03-07 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPS62119727A (en) * 1985-11-19 1987-06-01 Konishiroku Photo Ind Co Ltd Magnetic recording medium
EP0486820A2 (en) * 1990-11-01 1992-05-27 BASF Magnetics GmbH Magnetic recording medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107460802B (en) * 2017-09-18 2019-07-16 江西省宏发路桥建筑工程有限公司 A kind of bridge is squeegeeed restorative procedure

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5994231A (en) * 1982-11-22 1984-05-30 Fuji Photo Film Co Ltd Magnetic recording medium
JPH0479049B2 (en) * 1982-11-22 1992-12-14 Fuji Photo Film Co Ltd
JPS61107533A (en) * 1984-10-31 1986-05-26 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPH0531209B2 (en) * 1984-10-31 1993-05-12 Konishiroku Photo Ind
JPS61250829A (en) * 1985-04-30 1986-11-07 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPS6252718A (en) * 1985-08-30 1987-03-07 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPH0576700B2 (en) * 1985-08-30 1993-10-25 Konishiroku Photo Ind
JPS62119727A (en) * 1985-11-19 1987-06-01 Konishiroku Photo Ind Co Ltd Magnetic recording medium
EP0486820A2 (en) * 1990-11-01 1992-05-27 BASF Magnetics GmbH Magnetic recording medium
US5436070A (en) * 1990-11-01 1995-07-25 Basf Magnetics Gmbh Magnetic recording medium comprising a polyoxyalkylene oxide binder, a phosphoric ester dispersant and a cicular magnetic powder

Also Published As

Publication number Publication date
JPS6343808B2 (en) 1988-09-01

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