JPS5577035A - Production of magnetic recording medium - Google Patents

Production of magnetic recording medium

Info

Publication number
JPS5577035A
JPS5577035A JP14784778A JP14784778A JPS5577035A JP S5577035 A JPS5577035 A JP S5577035A JP 14784778 A JP14784778 A JP 14784778A JP 14784778 A JP14784778 A JP 14784778A JP S5577035 A JPS5577035 A JP S5577035A
Authority
JP
Japan
Prior art keywords
magnetic
recording medium
magnetic powder
magnetic recording
copolymer
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
JP14784778A
Other languages
Japanese (ja)
Inventor
Takehisa Okawa
Kunikazu Shinomiya
Kiyohiro Takizawa
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 JP14784778A priority Critical patent/JPS5577035A/en
Publication of JPS5577035A publication Critical patent/JPS5577035A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the dispersion property of magnetic powder in a magnetic layer to produce a magnetic recording medium superior in durability and reliability by using a magnetic paint obtained by dispersing magnetic powder whose surface is processed with a specific copolymer.
CONSTITUTION: Magnetic powder such as γ-Fe2O3 is soaked in the solution of a vinyl chloride-vinyl acetate copolymer (the copolymer of a density of approximately 10wt% or less is desirable) of the content of vinyl alcohol components of 8wt% or more to perform the surface processing, and after that, a dispersing liquid (magnetic paint) of this magnetic powder and an organic binder such as an urethane resin is formed. Next, the magnetic paint above is applied onto a nonmagnetic support material to form a magnetic layer according to the conventional method, thus obtaining a magnetic recording medium.
COPYRIGHT: (C)1980,JPO&Japio
JP14784778A 1978-12-01 1978-12-01 Production of magnetic recording medium Pending JPS5577035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14784778A JPS5577035A (en) 1978-12-01 1978-12-01 Production of magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14784778A JPS5577035A (en) 1978-12-01 1978-12-01 Production of magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5577035A true JPS5577035A (en) 1980-06-10

Family

ID=15439594

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14784778A Pending JPS5577035A (en) 1978-12-01 1978-12-01 Production of magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5577035A (en)

Cited By (2)

* 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
US5843334A (en) * 1994-06-20 1998-12-01 Nippon Shinyaku Co., Ltd. Method of producing emulsions and an emulsification apparatus

Cited By (2)

* 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
US5843334A (en) * 1994-06-20 1998-12-01 Nippon Shinyaku Co., Ltd. Method of producing emulsions and an emulsification apparatus

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