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. 04, 2006
Filed:
Aug. 24, 2000
Akira Kubota, Nara, JP;
Shoji Nakajima, Otsu, JP;
Yukari Nakamori, Shiga, JP;
Tetsuya Tsunekawa, Otsu, JP;
Akira Kubota, Nara, JP;
Shoji Nakajima, Otsu, JP;
Yukari Nakamori, Shiga, JP;
Tetsuya Tsunekawa, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
An object of the present invention is to provide a high-quality biaxially oriented film exhibiting an excellent electromagnetic conversion property, traveling durability, magnetic head traveling performance, etc. as a magnetic recording medium. The object of the present invention is achieved by a biaxially oriented film including a polymer alloy composed of polyester (polymer 1) and a thermoplastic resin (polymer 2) other than the polyester as essential components, wherein micro protrusions having a height of 2 to 50 nm are formed at a density of 1,000,000 to 90,000,000/mmon at least one surface.