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. 01, 1996
Filed:
May. 26, 1995
Applicant:
Inventors:
Setsuo Kobayashi, Hitachi, JP;
Kishiro Iwasaki, Hitachiota, JP;
Mariko Nakamura, Kawasaki, JP;
Hiroshi Sasaki, Ibaraki, JP;
Yutaka Ito, Takahagi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369272 ; 369284 ; 43027014 ; 43027017 ; 43027019 ; 430945 ;
Abstract
An optical information recording medium comprising a substrate and formed thereon an information recording layer comprising at least two organic dyes having different chemical structures and continuous playback ability of 10.sup.5 times or more at a playback laser power of 0.5 to 1.5 mW, is excellent in readout light stability (durability) and reflectance.