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:
Sep. 08, 1992
Filed:
Sep. 26, 1990
Atsuko Matsuda, Hino, JP;
Tsutomu Kenpo, Hino, JP;
Konica Corporation, Tokyo, JP;
Abstract
A magnetic recording medium having superior electromagnetic conversion characteristics and travel durability in a well balanced state. The recording medium comprises a non-magnetic support and a plurality of magnetic layers each comprising a ferromagnetic powder and a binder and each of the magnetic layers shows a peak of its loss modulus at a temperature not less than 50.degree. C. and the half-width of the loss modulus-temperature curve showing the peak of loss modulus is not larger than 20.degree. C.; and the temperature of the peak of loss modulas of the outermost magnetic layer provided at the outermost portion among the magnetic layers is higher than that of a magnetic layer other than the outermost magnetic layer.