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. 01, 2000
Filed:
Apr. 25, 1997
Kiyomi Ejiri, Odawara, JP;
Hiroo Inaba, Odawara, JP;
Shinji Saito, Odawara, JP;
Satoru Hayakawa, Odawara, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A magnetic recording medium is disclosed, comprising a non-magnetic support having provided thereon at least a lower non-magnetic layer comprising a binder having dispersed therein a non-magnetic powder and an upper magnetic layer comprising which has been coated on said lower non-magnetic layer while the lower non-magnetic layer is wet or in a dry state, wherein the coating solution for the lower non-magnetic layer having a thixotropic property and the lower non-magnetic layer containing either (a) an acicular inorganic powder having a Mohs hardness of 3 or more and a major axis length of 0.3 .mu.m or less or (b) a spherical inorganic powder other than carbon black having an average primary particle size of 0.08 .mu.m or less. The magnetic recording medium exhibits excellent electromagnetic characteristics, running properties, and durability.