JPS54137302A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS54137302A
JPS54137302A JP4564678A JP4564678A JPS54137302A JP S54137302 A JPS54137302 A JP S54137302A JP 4564678 A JP4564678 A JP 4564678A JP 4564678 A JP4564678 A JP 4564678A JP S54137302 A JPS54137302 A JP S54137302A
Authority
JP
Japan
Prior art keywords
vinyl
copolymer
binder
recording medium
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.)
Granted
Application number
JP4564678A
Other languages
Japanese (ja)
Other versions
JPS583288B2 (en
Inventor
Masaharu Nishimatsu
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 JP4564678A priority Critical patent/JPS583288B2/en
Publication of JPS54137302A publication Critical patent/JPS54137302A/en
Publication of JPS583288B2 publication Critical patent/JPS583288B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To shorten the half value period of the charges in a magnetic recording medium by using a special copolymer of vinyl chrolide-vinyl acetate as the binder of a magnetic layer and alkyl ether type surface artive agent as a surface active agent.
CONSTITUTION: In case a copolymer of vinyl chrolide-vinyl acetate, which is plastitized with a polyurethane resin, is used as a binder, less than 40% of a pokyurethane regin, a copolymer of vinyl chrolide-vinyl acetate, an alkyl ether type surface active agent and magnetic powders are blended for the whole binder. The magnetic paint thus prepared is applied to a substrate.
COPYRIGHT: (C)1979,JPO&Japio
JP4564678A 1978-04-18 1978-04-18 magnetic recording medium Expired JPS583288B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4564678A JPS583288B2 (en) 1978-04-18 1978-04-18 magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4564678A JPS583288B2 (en) 1978-04-18 1978-04-18 magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS54137302A true JPS54137302A (en) 1979-10-25
JPS583288B2 JPS583288B2 (en) 1983-01-20

Family

ID=12725128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4564678A Expired JPS583288B2 (en) 1978-04-18 1978-04-18 magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS583288B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4477520A (en) * 1979-12-24 1984-10-16 Fujitsu Limited Magnetic recording media having lubricated contact layer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4477520A (en) * 1979-12-24 1984-10-16 Fujitsu Limited Magnetic recording media having lubricated contact layer

Also Published As

Publication number Publication date
JPS583288B2 (en) 1983-01-20

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