Patent ID: 8939566
Filing Date: 2015-01-27
Classification: B41J,B41M,C09D

Abstract:
1. An ink jet printing ink for use in an ink jet printing method in which the ink is ejected from a print head by the action of thermal energy, the ink jet printing ink comprising: water, a self-dispersing pigment, a resin particle A, and a resin particle B wherein the resin particle A has an average particle size of 80 nm to 220 nm, an acid value of 25 mgKOH/g to 150 mgKOH/g, and a glass transition temperature of 25 degrees Celsius or less, wherein the resin particle B has an average particle size of 80 nm to 220nm, an acid value of 25 mgKOH/g to 150 mgKOH/g, and a glass transition temperature of 25 degrees Celsius or more, and wherein a difference in glass transition temperature between the resin particle A and the resin particle B is 10 degrees Celsius or more.