JPS5573930A - Manufacture of magnetic recording medium - Google Patents

Manufacture of magnetic recording medium

Info

Publication number
JPS5573930A
JPS5573930A JP14709978A JP14709978A JPS5573930A JP S5573930 A JPS5573930 A JP S5573930A JP 14709978 A JP14709978 A JP 14709978A JP 14709978 A JP14709978 A JP 14709978A JP S5573930 A JPS5573930 A JP S5573930A
Authority
JP
Japan
Prior art keywords
magnetic powder
magnetic
surfactant
manufacture
solution
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
JP14709978A
Other languages
Japanese (ja)
Inventor
Kunikazu Shinomiya
Kiyohiro Takizawa
Takehisa Okawa
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 JP14709978A priority Critical patent/JPS5573930A/en
Publication of JPS5573930A publication Critical patent/JPS5573930A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the strength of a magnetic layer and the run operation and durability of a magnetic tape by improving the dispersibility of magnetic powder in the magnetic layer by dipping magnetic powder in a solution a styrene-maleic acid copolymer derivative and by making magnetic powder adsorb the copolymer derivative.
CONSTITUTION: In a solution of not less than 1wt% of a polymer surfactant of 2000W20000 in average molecular weight of a styrene-maleic acid copolymer derivative shown by formula [I] and magnetic powder, magnetic powder is dipped to adsorb the above-mentioned surfactant. After this magnetic powder is taken out and dried, a magnetic coating obtained by dispersing it in a solution containing a binder [copolymer of vinyl chloride and vinyl acetate and hardner (urethane resin, etc.)] is applied on a base body of a polyester film, etc., and dried to manufacture a magnetic tape. In this way, binding capacity between the magnetic powder and binder is strengthened without leaching the surfactant from the tape surface.
COPYRIGHT: (C)1980,JPO&Japio
JP14709978A 1978-11-30 1978-11-30 Manufacture of magnetic recording medium Pending JPS5573930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14709978A JPS5573930A (en) 1978-11-30 1978-11-30 Manufacture of magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14709978A JPS5573930A (en) 1978-11-30 1978-11-30 Manufacture of magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5573930A true JPS5573930A (en) 1980-06-04

Family

ID=15422462

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14709978A Pending JPS5573930A (en) 1978-11-30 1978-11-30 Manufacture of magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5573930A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS573224A (en) * 1980-06-05 1982-01-08 Toshiba Corp Magnetic recording body
US4407901A (en) * 1980-09-12 1983-10-04 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPS6161225A (en) * 1984-09-03 1986-03-29 Tdk Corp Magnetic recording medium and its production

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS573224A (en) * 1980-06-05 1982-01-08 Toshiba Corp Magnetic recording body
US4407901A (en) * 1980-09-12 1983-10-04 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPS6161225A (en) * 1984-09-03 1986-03-29 Tdk Corp Magnetic recording medium and its production

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