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Patent Searching and Data


Title:
MAGNETIC RECORDING MEDIUM AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH10149531
Kind Code:
A
Abstract:

To provide a magnetic recording medium having high electromagnetic conversion characteristics adequate for high-density recording and a process for producing the same.

A nonmagnetic base 1 is provided thereon with a lower layer 4a consisting of a nonmagnetic layer formed by dispersing nonmagnetic powder into a binder and an upper layer 2a consisting of a magnetic layer formed by dispersing magnetic powder into the binder. A dispersant consisting of polytitanium (or polyzirconium) acetyl acetonate is incorporated into the lower layer 4a. At the time of producing such magnetic recording medium, a nonmagnetic coating material for forming the lower layer 4a and a magnetic coating material for forming the upper layer 2a are simultaneously applied wet on wet on the nonmagnetic base 1.


Inventors:
KURIHARA KENICHI
SASAKI YUICHI
MIYASHITA MAYUMI
KAMEI TAKAHIRO
KISHII NORIYUKI
Application Number:
JP32104696A
Publication Date:
June 02, 1998
Filing Date:
November 15, 1996
Export Citation:
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Assignee:
SONY CORP
International Classes:
C08G79/14; G11B5/73; G11B5/738; G11B5/842; (IPC1-7): G11B5/704; C08G79/14; G11B5/842
Attorney, Agent or Firm:
Hiroshi Osaka