Patent ID: 7414082
Filing Date: 2008-08-19
Classification: C09D

Abstract:
1. A recording liquid comprising at least: a pigment (a); a polymer (b) having one or more types of bond selected from the group consisting of urethane bond and urea bond in the molecule, having a weight-average molecular weight of 7000 to 300000 and having an acid value of free acid of not less than 55 mgKOH/g and less than 150 mgKOH/g, and a polymer (c) other than polymer (b); wherein polymer (c) is a copolymer, wherein the ratio of polymer (b) to polymer (c) ranges from about 6:1 to about 2.5:1; and wherein the surface tension of said recording liquid ranges from 25 to 54 dyne/cm.