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:
Feb. 01, 2005
Filed:
Dec. 01, 2003
Koji Wariishi, Kanagawa, JP;
Toshio Ishida, Kanagawa, JP;
Shinnichi Morishima, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
An information recording medium showing a high light-resistance has a recording layer containing a dye compound having the following formula (I-1) or (I-2):in which each of A, A, Band Bis a substituent; each of Yand Zis a group of atoms required for forming a carbon ring or a heterocyclic ring; each of E and G is a group of atoms required for forming a conjugated double bond chain; Xis ═O, ═NR or ═C(CN), wherein R is a substituent; Xis —O, —NR or —C(CN), wherein R is a substituent; each of L, L, L, Land Lis a methine group which may have a substituent; Mis an onium ion containing a positively charged onium atom to which no hydrogen atom is attached; each of m and n is 0, 1 or 2; each of x and y is 0 or 1; and x is an integer of 1 to 10.