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.
Patent No.:
Date of Patent:
Feb. 25, 1997
Filed:
Sep. 27, 1995
Yoshiteru Matsubayashi, Mito, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A magnetic recording medium comprises a support film and a magnetic layer formed by painting the support film with magnetic material together with a binder. The magnetic powder is iron nitride material and has saturation magnetization .sigma..sub.s of 160-210 emu/g, coersive force Hc of 1500-2500 Oe, acicular ratio of 5-15 and major axis length of 0.05-0.15 .mu.m and the binder contains at least one of vinyl chloride copolymer, polyvinyl chloride acetate copolymer, polyester resin and uretane resin and at least one functional group selected from a group consisting of amino group, methylol group, carboxyl group, acid amide group, isocyanate group, sulfonic acid metallic salt group, phosphate group, quaternary ammonium salt group, sulfo betaine group and epoxy group.