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:
Jul. 15, 1997
Filed:
Sep. 05, 1995
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
In the magnetic recording medium with a total thickness of 12.5 .mu.m, a magnetic layer is formed on one surface of a non-magnetic supporter, and a back coat layer with a thickness of 1.0 .mu.m and composed of solid powder and a binder is formed on the other surface of the same non-magnetic supporter. The solid powder contains platelet inorganic powder and carbon black powder mixed in such a mix rate that the carbon black powder is between 5 and 20 parks by weight, when the platelet inorganic powder is 100 parts by weight. In spite of the fact that the total thickness of the magnetic recording medium is as thin as 12.5 .mu.m, a sufficient mechanical strength and a sufficient travel stability can be both obtained, while preventing tape damage such as breakage, wrinkles, etc.