JPS5613521A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5613521A
JPS5613521A JP8747779A JP8747779A JPS5613521A JP S5613521 A JPS5613521 A JP S5613521A JP 8747779 A JP8747779 A JP 8747779A JP 8747779 A JP8747779 A JP 8747779A JP S5613521 A JPS5613521 A JP S5613521A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic recording
recording medium
resin
binder
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
JP8747779A
Other languages
Japanese (ja)
Inventor
Norimichi Tokuda
Shigeru Takamatsu
Hideo Kobayashi
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 JP8747779A priority Critical patent/JPS5613521A/en
Priority to NL8003850A priority patent/NL8003850A/en
Priority to GB8022605A priority patent/GB2054622B/en
Priority to DE19803026357 priority patent/DE3026357A1/en
Publication of JPS5613521A publication Critical patent/JPS5613521A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To obtain a magnetic recording medium having dispersibility and surface property improved by forming a magnetic layer by mixing magnetic powder in a binder that contains -SO3Na group containing polyester resin, a copolymer of vinyl chloride and vinyl acetate and thermoplastic polyurethane.
CONSTITUTION: Ferromagnetic powder is dispersed in a binder, containing a resin introduced -SO3Na group as a side chain for polyurethane resin, a copolymer of vinyl chloride and vinyl acetate and thermoplastic polyurethane prepolymer. This magnetic coating is applied on a polyester film, etc., and then dried to form a magnetic recording tape. Consequently, the magnetic recording tape can be obtained which has superior surface reflectivity, residual magnetic-flux density, Br/Bm ratio, S/N ratio, etc.
COPYRIGHT: (C)1981,JPO&Japio
JP8747779A 1979-07-12 1979-07-12 Magnetic recording medium Pending JPS5613521A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8747779A JPS5613521A (en) 1979-07-12 1979-07-12 Magnetic recording medium
NL8003850A NL8003850A (en) 1979-07-12 1980-07-03 Magnetic recording tape - using binder comprising polyester with sodium sulphonate gps. and polyurethane prepolymer
GB8022605A GB2054622B (en) 1979-07-12 1980-07-10 Magnetic recording medium
DE19803026357 DE3026357A1 (en) 1979-07-12 1980-07-11 MAGNETIC RECORDING MEDIUM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8747779A JPS5613521A (en) 1979-07-12 1979-07-12 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5613521A true JPS5613521A (en) 1981-02-09

Family

ID=13915996

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8747779A Pending JPS5613521A (en) 1979-07-12 1979-07-12 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5613521A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS598127A (en) * 1982-07-05 1984-01-17 Sony Corp Magnetic recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS598127A (en) * 1982-07-05 1984-01-17 Sony Corp Magnetic recording medium
JPH0379764B2 (en) * 1982-07-05 1991-12-19 Sonii Kk

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