Ink jet printing ink
AssigneeCanon Kabushiki Kaisha
InventorsIkuo Nakazawa, Masayuki Ikegami
Life of this patent
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Abstract
An ink jet printing ink for use in an ink jet printing method. The ink is ejected from a print head by the action of thermal energy and includes water, a self-dispersing pigment, and at least two types of resin particles. One of the at least two types of resin particles (resin particle A) and another of the at least two types of resin particles (resin particle B) have an average particle size of 80 nm or more but 220 nm or less and an acid value of 25 mgKOH/g or more but 150 mgKOH/g or less. The resin particle A has a glass transition temperature of 25 degrees Celsius or less. The resin particle B has a glass transition temperature of 25 degrees Celsius or more. A difference in glass transition temperature between the resin particle A and the resin particle B is 10 degrees Celsius or more.
Claims13
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.
Dependencies are inferred from the claim text.