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:
Sep. 21, 2004
Filed:
Feb. 04, 2003
Soh Noguchi, Yokohama, JP;
Tsutomu Satoh, Yokohama, JP;
Tatsuya Tomura, Tokyo, JP;
Yasunobu Ueno, Kanagawa-ken, JP;
Tohru Yashiro, Ebina, JP;
Tomomi Ishimi, Yokohama, JP;
Ikuo Shimizu, Yokkaichi, JP;
Motoharu Kinugasa, Yokkaichi, JP;
Hiroshi Toyoda, Yokkaichi, JP;
Shiho Yamada, Yokkaichi, JP;
Other;
Abstract
An optical recording medium having a substrate, and a recording layer provided on the substrate and containing: (a) a formazan metal chelate including a formazan compound and a metal component, (b) a squarylium metal chelate including a squarylium compound and a metal component; and (c) at least one additional dye selected from phthalocyanine compounds and pentamethine cyanine compounds. Alternatively, the recording layer contains (a) a first formazan metal chelate including a first formazan compound and a first metal component and having the maximum absorption wavelength in the range of 500 to 650 nm, (b) a squarylium metal chelate including a squarylium compound and a metal component; and (c) a second formazan metal chelate including a second formazan compound and a second metal component and having the maximum absorption wavelength different from that of the first formazan metal chelate and in the range of 650 to 750 nm.