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. 03, 1990
Filed:
Oct. 19, 1987
Yoshio Inagaki, Minami-Ashigara, JP;
Masayoshi Tsuboi, Minami-Ashigara, JP;
Yoshiaki Suzuki, Minami-Ashigara, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
An optical recording medium comprising a support carrying thereon a dye and at least one of the quenchers represented by the general formula (I) or (II) ##STR1## wherein (Cat.sub.1) and (Cat.sub.2) respectively represent a cation necessary for making the complex neutral, M.sub.1 and M.sub.2 respectively represent nickel, copper, cobalt, palladium or platinum, and n represents 1 or 2, is offered. The optical recording medium has a smaller deterioration during reproduction, in other words is superior in reading durability, and is at the same time superior in stability in preservation, as compared with the optical recording medium of the prior art.