JPS5494308A - Production of magnetic recording medium - Google Patents

Production of magnetic recording medium

Info

Publication number
JPS5494308A
JPS5494308A JP96378A JP96378A JPS5494308A JP S5494308 A JPS5494308 A JP S5494308A JP 96378 A JP96378 A JP 96378A JP 96378 A JP96378 A JP 96378A JP S5494308 A JPS5494308 A JP S5494308A
Authority
JP
Japan
Prior art keywords
magnetic powder
alkyl ether
ether phosphate
polyoxyethylene alkyl
formula
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
JP96378A
Other languages
Japanese (ja)
Other versions
JPS5744970B2 (en
Inventor
Toshio Tanitsu
Shinji Umeki
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 JP96378A priority Critical patent/JPS5494308A/en
Publication of JPS5494308A publication Critical patent/JPS5494308A/en
Publication of JPS5744970B2 publication Critical patent/JPS5744970B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To increase dispersibility and improve surface electric resistance by adding a specific dispersant at the time of preparing magnetic coating with magnetic powder having adsorbed phosphoric ester on surfaces.
CONSTITUTION: Magnetic powder is dipped in an aqueous solution of polyoxyethylene alkyl ether phosphate or polyoxyethylene alkyl ether phosphate being monoester type of formula I or diester type of formula II, and the solution is filtered and dries. Next, the binder comprising adding alkyl benzene sulfonic acid or polyoxyethylene alkyl ether phosphate of 0.1 to 3pts.wt. based to 100pts.wt. of magnetic powder and the abovementioned magnetic powder are mixed and the resultant magnetic coating is coated on a substrate.
COPYRIGHT: (C)1979,JPO&Japio
JP96378A 1978-01-09 1978-01-09 Production of magnetic recording medium Granted JPS5494308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP96378A JPS5494308A (en) 1978-01-09 1978-01-09 Production of magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP96378A JPS5494308A (en) 1978-01-09 1978-01-09 Production of magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS5494308A true JPS5494308A (en) 1979-07-26
JPS5744970B2 JPS5744970B2 (en) 1982-09-25

Family

ID=11488290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP96378A Granted JPS5494308A (en) 1978-01-09 1978-01-09 Production of magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5494308A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5649769A (en) * 1979-09-29 1981-05-06 Dainippon Printing Co Ltd Surface treatment of ferromagnetic powder for magnetic ink
JPS57152535A (en) * 1981-03-18 1982-09-20 Hitachi Maxell Ltd Magnetic recording medium
JPS57152536A (en) * 1981-03-18 1982-09-20 Hitachi Maxell Ltd Magnetic recording medium
JPH041917A (en) * 1990-04-19 1992-01-07 Fuji Photo Film Co Ltd Magnetic recording medium and its production

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837955U (en) * 1981-09-04 1983-03-11 三菱自動車工業株式会社 Cyclone air cleaner

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5649769A (en) * 1979-09-29 1981-05-06 Dainippon Printing Co Ltd Surface treatment of ferromagnetic powder for magnetic ink
JPS57152535A (en) * 1981-03-18 1982-09-20 Hitachi Maxell Ltd Magnetic recording medium
JPS57152536A (en) * 1981-03-18 1982-09-20 Hitachi Maxell Ltd Magnetic recording medium
JPH0341891B2 (en) * 1981-03-18 1991-06-25
JPH0427609B2 (en) * 1981-03-18 1992-05-12 Hitachi Maxell
JPH041917A (en) * 1990-04-19 1992-01-07 Fuji Photo Film Co Ltd Magnetic recording medium and its production

Also Published As

Publication number Publication date
JPS5744970B2 (en) 1982-09-25

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