摘要:
Provided is a process for the preparation of a pigment dispersion which comprises a pigment surface treatment step of introducing at least one hydrophilic dispersibility-providing group onto the surface of a pigment directly and/or with the interposition of a polyvalent group, and a dispersion step of dispersing a surface-treated pigment obtained at the surface treatment step in an aqueous medium, characterized in that the dispersion step involves the dispersion of the surface-treated pigment in admixture with a wetting agent and water and a resin for providing dispersibility and/or fixability is added during and/or after the dispersion step.
摘要:
A coating liquid for forming a transparent topcoat, without requiring a hardening or fixing process that uses heating or UV radiation. The coating liquid imparts light resistance, water resistance, fixation, and glossiness to recordings. Also, a recording method using the coating liquid, and recordings produced thereby. The liquid, which is applied to recorded images, contains at least water, fine polymer particles, and a penetrating agent, preferably a penetrating agent selected acetylene glycol surfactants, acetylene alcohol surfactants, glycol ethers, and 1,2-alkylene glycols. Also, an image recording method for forming an even, transparent coating layer by spraying the coating liquid during an ink jet recording process, as well as recordings produced thereby.
摘要:
An aqueous ink ensuring less blurring and high color formation on plain paper, satisfactory color formation and fixing property on special paper and excellent ejection stability is realized by using a microcapsule of a colorant encapsulated with a polymer and rendered dispersible in water and specifying the amount of the aromatic ring in the polymer to be from 20 to 70 wt % of the polymer.
摘要:
The present invention provides an aqueous ink containing a dispersion in which a colorant is encapsulated with a polymer to make it dispersible in water, wherein the polymer has aromatic rings in an amount of from 20% by weight to 70% by weight based on the weight of the polymer, and further, the ink contains a compound represented by the following formula: wherein R represents a bivalent organic group, PO represents a propyleneoxy group, EO represents an ethyleneoxy group, x, y, a and b are each the number of repeating units, x represents a number of 1 to 200, y represents a number of 1 to 50, a represents a number of 1 to 30, and b represents a number of 0 to 20.
摘要:
The present invention provides an aqueous ink containing a dispersion in which a colorant is encapsulated with a polymer to make it dispersible in water, wherein the polymer has aromatic rings in an amount of from 20% by weight to 70% by weight based on the weight of the polymer, and further, the ink contains a compound represented by the following formula: wherein R represents a bivalent organic group, PO represents a propyleneoxy group, EO represents an ethyleneoxy group, x, y, a and b are each the number of repeating units, x represents a number of 1 to 200, y represents a number of 1 to 50, a represents a number of 1 to 30, and b represents a number of 0 to 20.
摘要:
An ink for ink jet printing process, comprising at least: a particulate pigment having a sulfur-containing dispersibility-imparting group on the surface thereof; a penetrating agent; a resin emulsion comprising a dispersed particulate resin having a sulfur-containing dispersibility-imparting group on the surface thereof; and water.
摘要:
An aqueous ink ensuring less blurring and high color formation on plain paper, satisfactory color formation and fixing property on special paper and excellent ejection stability is realized by using a microcapsule of a colorant encapsulated with a polymer and rendered dispersible in water and specifying the amount of the aromatic ring in the polymer to be from 20 to 70 wt % of the polymer.
摘要:
Disclosed is a pigment dispersion that can be used for an ink jet printing-use pigment ink that affords stable printing characteristics and has excellent storage stability in an ink jet printer having a head driven at a high frequency and having finer nozzles in order to enhance image quality and raise the speed. Disclosed is also a method for manufacturing this pigment dispersion. This manufacturing method includes a step of surface-treating a self-dispersing type of pigment, in which at least hydrophilic, dispersibility-imparting group is introduced to the pigment surface directly and/or via a polyvalent group, and a step of dispersing the self-dispersing pigment obtained in said surface-treating step in an aqueous medium, wherein the dispersion step is a step in which at least the self-dispersing pigment, a wetting agent, and water are dispersed in the form of a liquid mixture.
摘要:
Provided are ink jet ink excellent in dispersion stability and ejection stability and capable of forming images with fastness, abrasion resistance, color developability, and high density with little feathering; a microencapsulated pigment (MCP) providing the ink and a process of making the same; and an aqueous dispersion of the MCP. The MCP comprises pigment particles having a hydrophilic group on their surface (hydrophilized pigment particles) and coated with a polymer by emulsion polymerization. The process comprises emulsion polymerization in the presence of the hydrophilized pigment particles. The ink essentially contains the MCP and water.
摘要:
An ink for ink jet recording including at least a particulate pigment having a sulfur-containing dispersibility providing group chemically bonded to the pigment surface with a treatment containing sulfur, a penetrating agent and a liquid component including water. In one embodiment, the liquid component includes polyvalent metal ions and has a sulfur content that is 2,000 ppm or less as calculated in terms of SO42−. In other embodiments, the ink has (a) a sulfonic acid anion group or a sulfinic acid anion group and an alkaline metal or monovalent counter ion; (b) a penetrating agent having the formula R—EOn2—POm2—X; and (c) a sulfur-containing dispersibility providing group in an amount of 10×106 equivalent or more per gram of particulate pigment.