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:
Apr. 07, 1992
Filed:
Jul. 03, 1989
Narito Goto, Hino, JP;
Yasuo Ando, Hino, JP;
Konica Corporation, Tokyo, JP;
Abstract
A magnetic recording medium is disclosed which comprises a non-magnetic support and a magnetic layer comprising ferromagnetic powder, provided on the support. The magnetic layer contains silicon and aluminum, wherein the silicon content of ferromagnetic powder is not less than 0.1% by weight, and the ratio by weight of silicon to aluminum is not less than 3, and magnetic layer contains a binder having an anionic functional group. The magnetic recording medium is excellent in the dispersibility of the ferromagnetic powder of the magnetic layer, and in the balance of magnetic characteristics such as S/N ratio, a squareness ratio, and electromagnetic conversion characteristic, while keeping an excellent running durability.