Patent ID: 6231653
Filing Date: 2001-05-15
Classification: B41M,C09D,D06P

Abstract:
An ink composition comprising:(a) from 0.1 to 50 parts of a dye;(b) from 0.1 to 50 parts of a sugar;(c) from 0.1 to 50 parts of a compound selected from the group consisting of phosphoric acid and a carboxylic acid or a salt thereof;(d) from 0 to 10 parts of a pH buffer; and(e) from 10 to 99 parts of a liquid medium;wherein all parts are by weight and the total number of parts (a)+(b)+(c)+(d)+(e)=100 said ink composition exhibiting superior light-fastness compared to such compositions that do not comprise both componenets (b) and (c).