The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 13, 1987

Filed:

Jul. 24, 1985
Applicant:
Inventors:

Masatoshi Nakayama, Tokyo, JP;

Haruyuki Morita, Tokyo, JP;

Yuichi Kubota, Tokyo, JP;

Keiko Tsuchiya, Tokyo, JP;

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428522 ; 427 39 ; 427 40 ; 427 44 ; 427128 ; 427129 ; 427131 ; 428694 ; 428900 ; 428483 ;
Abstract

In a magnetic recording medium comprising a plastic base film and a magnetic layer, the base film is plasma treated at frequencies in the range of 10 kHz to 200 kHz in an inorganic gas containing at least 5% of oxygen. The magnetic layer is formed on the plasma treated base film by applying a magnetic composition of ferromagnetic fine particles dispersed in a plasticized binder compound comprising a radiation-sensitive modified resin in admixture with a radiation-sensitive modified flexible resin or prepolymer, oligomer or telomer thereof, and exposing the composition to radiation for crosslinking and polymerization.


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Nakayama, Masatoshi. (1987). Magnetic recording medium (U.S. Patent No. 4699847). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4699847

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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