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:
Oct. 05, 1999
Filed:
Feb. 19, 1997
Kouichi Masaki, Kanagawa, JP;
Fuji Photo Film Co., Ltd., , JP;
Abstract
A magnetic recording medium is disclosed, comprising a non-magnetic support having thereon at least one magnetic layer comprising a binder and a ferromagnetic metal powder mainly composed of iron, wherein the amount of a complex of iron with benzohydroxamic acid formed in the magnetic recording medium is from 0 to 6.0 ppm/g. Also, a magnetic recording medium is disclosed, which comprises a non-magnetic support having thereon at least two layers comprising a non-magnetic layer comprising a non-magnetic powder and a binder provided on a non-magnetic support and a magnetic layer comprising a binder and a ferromagnetic metal powder mainly composed of iron provided on said non-magnetic layer, wherein said non-magnetic powder contained in said non-magnetic layer forms a complex of iron with benzohydroxamic acid in an amount of from 0 to 10 ppm/g and has a water-soluble sodium salt content of from 0 to 150 ppm/g and a total water-soluble alkaline earth metal salt content of from 0 to 50 ppm/g. The present invention provides a magnetic recording medium excellent in practical performance such as running properties, durability and storage properties.