JPS55139632A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS55139632A
JPS55139632A JP4642979A JP4642979A JPS55139632A JP S55139632 A JPS55139632 A JP S55139632A JP 4642979 A JP4642979 A JP 4642979A JP 4642979 A JP4642979 A JP 4642979A JP S55139632 A JPS55139632 A JP S55139632A
Authority
JP
Japan
Prior art keywords
magnetic
recording medium
resistance
magnetic recording
improved
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
JP4642979A
Other languages
Japanese (ja)
Inventor
Masaaki Yasui
Masayoshi Kawarai
Seiji Wataya
Takeshi Matsuura
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell 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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP4642979A priority Critical patent/JPS55139632A/en
Publication of JPS55139632A publication Critical patent/JPS55139632A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve electromagnetic conversion characteristics, durability, etc., by using a copolymer of a vinyl chloride-vinyl propionate system, urethane prepolymer and cellulose resin as binder components of magnetic powder applied on a base.
CONSTITUTION: Fixed volumes of a copohmer of a vinyl chloride-vinyl propionate system, urethane prepolymer and cellulose resin are blended and a polyisocyanate compound of low molecular weight is added at need to obtain binder components, which are mixed and dispersed in an adequate organic solvent together with magnetic powder such as Fe2O3 containing Co. This magnetic coating is applied on a base of a polyester film, etc., and dried. Consequently, the resistance to wear of the magnetic layer is improved and its thermal resistance and moisture resistance are both improved, so that a stable magnetic recording medium can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP4642979A 1979-04-16 1979-04-16 Magnetic recording medium Pending JPS55139632A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4642979A JPS55139632A (en) 1979-04-16 1979-04-16 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4642979A JPS55139632A (en) 1979-04-16 1979-04-16 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS55139632A true JPS55139632A (en) 1980-10-31

Family

ID=12746899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4642979A Pending JPS55139632A (en) 1979-04-16 1979-04-16 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS55139632A (en)

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