JPS56169221A - Constituent of resin binder for formation of magnetic recording medium - Google Patents

Constituent of resin binder for formation of magnetic recording medium

Info

Publication number
JPS56169221A
JPS56169221A JP7002280A JP7002280A JPS56169221A JP S56169221 A JPS56169221 A JP S56169221A JP 7002280 A JP7002280 A JP 7002280A JP 7002280 A JP7002280 A JP 7002280A JP S56169221 A JPS56169221 A JP S56169221A
Authority
JP
Japan
Prior art keywords
constituent
resin
resistance
recording medium
carbon 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
JP7002280A
Other languages
Japanese (ja)
Other versions
JPH0656651B2 (en
Inventor
Kazuo Ogasa
Satoru Asanome
Masaomi Naito
Ryuichi Suzuki
Hikari Nagai
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55070022A priority Critical patent/JPH0656651B2/en
Publication of JPS56169221A publication Critical patent/JPS56169221A/en
Publication of JPH0656651B2 publication Critical patent/JPH0656651B2/en
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
    • G11B5/702—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

Landscapes

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

Abstract

PURPOSE:To prepare a constituent of a resin binder useful to manufacture a magnetic recording medium which has low frictional resistance and is never damaged by a head while containing self-cross-linkable thermosetting acrylic resin, carbon powder and butyral resin. CONSTITUTION:Present invention relates to a constituent which is capable of dispersing magnetic material powder while containing (A) 35-95pts.wt. self-cross- linkable thermosetting acrylic resin having N-methylolamide groups or N-alkoxymethylamide groups as a reactive functional group, (B) 1-40wt% carbon powder basing on the amount of magnetic material powder, and (C) 1-30% butyral resin basing on acrylic resin. The said carbon powder is effective especially in improving contact-start/stop resistance and wear resistance with regard to the strength of a coating film, and the butyral resin is also effective in improving resistance to a solvent, such as methyl ethyl ketone, flexibility, and impregnation with a lubricant.
JP55070022A 1980-05-28 1980-05-28 Magnetic disk Expired - Lifetime JPH0656651B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55070022A JPH0656651B2 (en) 1980-05-28 1980-05-28 Magnetic disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55070022A JPH0656651B2 (en) 1980-05-28 1980-05-28 Magnetic disk

Publications (2)

Publication Number Publication Date
JPS56169221A true JPS56169221A (en) 1981-12-25
JPH0656651B2 JPH0656651B2 (en) 1994-07-27

Family

ID=13419556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55070022A Expired - Lifetime JPH0656651B2 (en) 1980-05-28 1980-05-28 Magnetic disk

Country Status (1)

Country Link
JP (1) JPH0656651B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5125122A (en) * 1974-08-26 1976-03-01 Matsushita Electric Ind Co Ltd Denshigatsuki no neiroseigyosochi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5125122A (en) * 1974-08-26 1976-03-01 Matsushita Electric Ind Co Ltd Denshigatsuki no neiroseigyosochi

Also Published As

Publication number Publication date
JPH0656651B2 (en) 1994-07-27

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