JPS56119930A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS56119930A
JPS56119930A JP2180880A JP2180880A JPS56119930A JP S56119930 A JPS56119930 A JP S56119930A JP 2180880 A JP2180880 A JP 2180880A JP 2180880 A JP2180880 A JP 2180880A JP S56119930 A JPS56119930 A JP S56119930A
Authority
JP
Japan
Prior art keywords
magnetic
tape
paint
anhydrosorbitol
triester
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
JP2180880A
Other languages
Japanese (ja)
Other versions
JPS6113288B2 (en
Inventor
Masaharu Nishimatsu
Tadashi Nishimura
Hiroshi Kawahara
Masaji Funakoshi
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 JP2180880A priority Critical patent/JPS56119930A/en
Priority to DE19803047855 priority patent/DE3047855A1/en
Publication of JPS56119930A publication Critical patent/JPS56119930A/en
Publication of JPS6113288B2 publication Critical patent/JPS6113288B2/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
    • G11B5/71—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 lubricant

Landscapes

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

Abstract

PURPOSE: To obtain a magnetic tape which is small in coefft. of friction, is less in its increase with time and hardly causes tape squealing by coating a magnetic paint contg. triester of saturated fatty acid of anhydrosorbitol and a hardener on a tape substrate.
CONSTITUTION: Triester of saturated fatty acid of anhydrosorbitol is added as a component for improving the dispersibility of magnetic powder, and also as lubricant to a magnetic paint using a polyurethane prepolymer and a vinyl chloride-vinyl acetate copolymer as a binder. A hardener of polyisocyanate base etc. is also contained therein. Then, even if this is coated on a substrate a long time later after the preparation of the magnetic paint, the magnetic layer exhibits the same performance as that right after the preparation of the paint and does not cause uneven coating etc. A magnetic tape which does not cause sticking of the magnetic layer on a magnetic head owing to its roughening and tape squealing owing to charging- slipping phenomena despite repeated uses is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP2180880A 1980-02-23 1980-02-23 Magnetic recording medium Granted JPS56119930A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2180880A JPS56119930A (en) 1980-02-23 1980-02-23 Magnetic recording medium
DE19803047855 DE3047855A1 (en) 1980-02-23 1980-12-18 Magnetic recording medium with lubricated magnetic coating - contg. tri:ester of satd. fatty acid and anhydro:sorbitol as lubricant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2180880A JPS56119930A (en) 1980-02-23 1980-02-23 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS56119930A true JPS56119930A (en) 1981-09-19
JPS6113288B2 JPS6113288B2 (en) 1986-04-12

Family

ID=12065346

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2180880A Granted JPS56119930A (en) 1980-02-23 1980-02-23 Magnetic recording medium

Country Status (2)

Country Link
JP (1) JPS56119930A (en)
DE (1) DE3047855A1 (en)

Also Published As

Publication number Publication date
JPS6113288B2 (en) 1986-04-12
DE3047855A1 (en) 1981-09-10

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