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. 20, 1996
Filed:
May. 10, 1993
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical recording medium of the present invention has a recording layer containing an organic coloring matter expressed by the following formula (I) or (II): ##STR1## wherein R.sub.0 through R.sub.5 each indicate a hydrogen atom or an monovalent organic residue, at least one of R.sub.0 through R.sub.3 being a fluorine-containing monovalent organic residue; m indicates 0, 1 or 2; and X.sup..crclbar. indicates an anion residue. ##STR2## wherein X.sup..crclbar. indicates an anion residue; m indicates 0, 1 or 2; and R.sub.0' and R.sub.3' are atoms forming combinations of R.sub.0' and R.sub.1', and R.sub.2', and R.sub.3' at least one of which forms, with a nitrogen atom, a fluorine-containing substituted or unsubstituted pyrrolidine ring, a fluorine-containing substituted or unsubstituted piperidine ring, a fluorine-containing substituted or unsubstituted morpholine ring, a fluorine-containing substituted or unsubstituted tetrahydropyridine ring, a fluorine-containing substituted or unsubstituted cyclohexylamine ring expressed by the formula ##STR3## and the other substituents each being a hydrogen atom or a monovalent organic residue; and R.sub.4, and R.sub.5, each indicate a hydrogen atom or a monovalent organic residue.