Pigment dispersion and ink composition and ink set both containing the same
A technology for pigment dispersion liquid and ink composition, which is applied in the fields of pigment dispersion liquid, ink composition using pigment dispersion liquid and ink set, can solve the problem of insufficient glossiness of color images, insufficient storage stability of ink composition, and inability to achieve high Image quality and other issues
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Publication Date
- 2005-11-16
- Estimated Expiration
- Not applicable · inactive patent
Smart Images
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Abstract
Description
technical field
[0001] The present invention relates to a pigment dispersion capable of realizing good glossiness of recorded images, anti-copper floating color and storage stability of the ink composition, an ink composition containing the pigment dispersion, and an ink composition containing the ink composition Ink set of the invention, especially relates to a kind of pigment dispersion liquid capable of realizing good glossiness of color image, anti-copper floating color and storage stability of ink composition, and the ink composition containing said pigment dispersion liquid and containing said Ink set of ink composition. Background technique
[0002] Heretofore, pigments have been widely used as colorants for inks for inkjet recording, inks for writing implements, and the like because of their excellent fastness to water, light, and the like. Since the pigment is insoluble in water, when it is used in an ink composition, it is important for the pigment to be stably di...
Examples
Embodiment approach A
[0019] (pigment dispersion)
[0020] The pigment dispersion of Embodiment A of the present invention includes at least a pigment, an aqueous medium, a copolymer resin of a hydrophobic monomer and a hydrophilic monomer, and a polyurethane resin, wherein the weight ratio of the above-mentioned copolymer resin to the above-mentioned polyurethane resin (the former / The latter) is 1 / 2 to 2 / 1.
[0021] Thus, the pigment dispersion liquid of Embodiment A of the present invention, by making it contain two specific resins in a specific weight ratio, can be prepared to have excellent storage stability and to be used for forming pigments having good gloss and preventing copper flooding. In addition to the glossiness of recorded images and the prevention of copper flooding, it also achieves output stability, anti-clogging properties, color stability, and high image quality comparable to silver salts. The pigment dispersion liquid according to the embodiment A of the present invention can...
Embodiment approach B
[0115] (pigment dispersion)
[0116] The pigment dispersion according to embodiment B of the present invention at least includes a pigment, an aqueous medium, a copolymer resin of a hydrophobic monomer and a hydrophilic monomer, and a polyurethane resin, wherein the content of the above-mentioned copolymer resin is 10 to 50 parts by weight / 100 parts by weight The above-mentioned pigment, the content of the above-mentioned polyurethane resin is 10-40 parts by weight / 100 parts by weight of the above-mentioned pigment.
[0117] In this way, the pigment dispersion liquid of Embodiment B of the present invention contains two specific resins in a specific content, so that an ink composition having excellent storage stability for forming an image having good gloss and preventing copper flooding can be prepared, In addition to recording image gloss and anti-copper floating color, it also realizes output stability, anti-clogging performance, color stability, and high image quality comp...
Embodiment approach C
[0139] (pigment dispersion)
[0140] The pigment dispersion according to Embodiment C of the present invention at least includes: a pigment, an aqueous medium, a copolymer resin of a hydrophobic monomer and a hydrophilic monomer, and a polyurethane resin, wherein the acid value of the copolymer resin is 50-320.
[0141] In this way, the pigment dispersion liquid of Embodiment C of the present invention contains two specific resins one of which has an acid value in a specific range, thereby making it possible to prepare an image having excellent It is an ink composition with storage stability, and in addition to the glossiness of recorded images and copper flooding resistance, it can also achieve output stability, anti-clogging properties, color stability, and high image quality comparable to silver salts. The pigment dispersion liquid according to the embodiment C of the present invention is as described above, and can realize the glossiness of the recorded image, the anti-cop...