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. 12, 1999
Filed:
Feb. 03, 1997
Satoru Ohnuki, Ibaraki-ken, JP;
Katsusuke Shimazaki, Ibaraki-ken, JP;
Norio Ohta, Ibaraki-ken, JP;
Hideo Fujiwara, Ibaraki-ken, JP;
Masafumi Yoshihiro, Ibaraki-ken, JP;
Noriyuki Ogihara, Ibaraki-ken, JP;
Yukinori Yamada, Ibaraki-ken, JP;
Hitachi Maxell, Ltd., Osaka, JP;
Abstract
A magneto-optical recording medium having a thin film, with suitable thermal conductivity, laminated on a magneto-optical film having excellent durability to repeated recording, reproducing and erasing comprising one layer or a multi-layer of thin film containing at least a magneto-optical recording film and carried on a transparent substrate, a ferromagnetic reflection film having a reflectance to a reproduction beam of 70% or higher and a thermal conductivity at a normal temperature from 0.05 to 2.0 W/cm.deg laminated on the backside of the magneto-optical recording film viewed from the transparent substrate side and, optionally, a heat control layer having a thermal conductivity at a normal temperature of 0.1 to 2.0 W/cm.deg laminated on the backside of the magneto-optical film.