JPS54147814A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS54147814A
JPS54147814A JP5551478A JP5551478A JPS54147814A JP S54147814 A JPS54147814 A JP S54147814A JP 5551478 A JP5551478 A JP 5551478A JP 5551478 A JP5551478 A JP 5551478A JP S54147814 A JPS54147814 A JP S54147814A
Authority
JP
Japan
Prior art keywords
ferromagnetic powder
surface active
binder
active agent
powder
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
JP5551478A
Other languages
Japanese (ja)
Other versions
JPS6032886B2 (en
Inventor
Masaharu Nishimatsu
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 JP5551478A priority Critical patent/JPS6032886B2/en
Publication of JPS54147814A publication Critical patent/JPS54147814A/en
Publication of JPS6032886B2 publication Critical patent/JPS6032886B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To improve the half-life of the charge quantity charged without giving influence to the strength among binders, avert the problem of deposition of peeled powder on head and further improve orientation characteristic by using the respectively specific binder and the ferromagnetic powder.
CONSTITUTION: An aqueous solution of alkyl ether type surface active agent and phosphoric acid ester type surface active agent of not more than the amount thereof and ferromagnetic powder are mixed to let the surface active agents be adsorbed on the surface of the ferromagnetic powder, after with the mixture is heated to dry. The ferromagnetic powder having undergone charging preventive treatment in this way is kneaded in the binder using the vinyl chloride-vinyl acetate copolymer plasticized by polyurethane resins of 40 wt% or under based on the total binder quantity and a solvent. The resultant magnetic caoting is coated on a suitable substrate.
COPYRIGHT: (C)1979,JPO&Japio
JP5551478A 1978-05-12 1978-05-12 magnetic recording medium Expired JPS6032886B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5551478A JPS6032886B2 (en) 1978-05-12 1978-05-12 magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5551478A JPS6032886B2 (en) 1978-05-12 1978-05-12 magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS54147814A true JPS54147814A (en) 1979-11-19
JPS6032886B2 JPS6032886B2 (en) 1985-07-31

Family

ID=13000792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5551478A Expired JPS6032886B2 (en) 1978-05-12 1978-05-12 magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS6032886B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379803A (en) * 1980-10-07 1983-04-12 Tdk Electronics Co., Ltd. Magnetic recording medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6323890U (en) * 1986-07-30 1988-02-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379803A (en) * 1980-10-07 1983-04-12 Tdk Electronics Co., Ltd. Magnetic recording medium

Also Published As

Publication number Publication date
JPS6032886B2 (en) 1985-07-31

Similar Documents

Publication Publication Date Title
JPS57133521A (en) Magnetic recording medium
JPS5744227A (en) Magnetic recording medium
JPS57130229A (en) Manufacture of magnetic recording material
JPS54151009A (en) Magnetic recording medium
JPS5515279A (en) Processing method for magnetic powder
JPS54147814A (en) Magnetic recording medium
JPS5538671A (en) Magnetic recording medium
JPS54147812A (en) Magnetic recording medium
JPS5315802A (en) High density magnetic recording material
JPS5570936A (en) Magnetic recording media
JPS54147816A (en) Magnetic recording medium
JPS54147815A (en) Magnetic recording medium
JPS54147811A (en) Magnetic recording medium
JPS54147813A (en) Magnetic recording medium
JPS5249254A (en) Novel iorganic filler
JPS5494308A (en) Production of magnetic recording medium
JPS5528505A (en) Magnetic recording medium
JPS5315803A (en) Magnetic recording material
JPS5517816A (en) Magnetic recording media
JPS5532252A (en) Magnetic recording medium
JPS54137302A (en) Magnetic recording medium
JPS5528520A (en) Magnetic recording medium
JPS5654013A (en) Metallic magnetic powder and treatment thereof
JPS54151008A (en) Magnetic coating for magnetic recording media
JPS56130830A (en) Magnetic recording medium