Abstract:
PROBLEM TO BE SOLVED: To provide an ink composition for inkjet recording that has high sensitivity to irradiation with active radiation and can form an image excellent in curability to give a cured image exhibiting high adhesion to a recording medium and exhibiting excellent flexibility in the imaged portion formed, and an inkjet recording method using the ink composition. SOLUTION: The ink composition for inkjet recording comprises (A) a compound having a polymerizable unsaturated bond and a cyclic amine structure in the molecule, (B) a compound having a polymerizable unsaturated bond and an alicyclic structure in the molecule, and (C) a radical polymerization initiator. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve ozone resistance while the development of an image blending is suppressed. SOLUTION: The ink-jet recording medium at least includes a water-soluble metal salt consisting of a cationic polyurethane resin, a bivalent water-soluble magnesium salt and/or a water-soluble calcium salt, and futher includes polyvinyl alcohol as a water-soluble binder, and a boric acid as a crosslinker. The spread x (g/m 2 ) of the cationic polyurethane resin and the spread y (g/m 2 ) of the bivalent water-soluble metal salt satisfy the relationships: 0.3≤x≤5.0 and 0.01x≤y≤0.5x. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an ink set for inkjet recording capable of stably maintaining ejection performance of an ink by preventing poor ejection of the ink due to a solid matter of a pigment ink generated by dryness or an aggregate of a pigment occurred when the pigment ink contacts with a maintenance liquid.SOLUTION: An ink set for inkjet recording includes: an ink composition containing a pigment, a water soluble polymerizable compound and water; and a maintenance liquid having a pH larger than 8.5 and containing water of 50 mass% or more based on the total liquid content, a water-soluble organic solvent having a SP (Solubility Parameter) value larger than 27.5 MPa, of 5 mass% to 30 mass% based on the total liquid content and a water-soluble organic solvent having a SP value of 27.5 MPaor less, of less than 5 mass% based on the total liquid content.
Abstract:
PROBLEM TO BE SOLVED: To provide an ink set capable of suppressing gloss unevenness in a black-color image formed by agglomerating components of a black-color ink composition containing only a small amount of polymer particles.SOLUTION: An ink set contains: a black-color ink composition containing a polymer-coated carbon black pigment, at least a part of the surface of a carbon black pigment of which is coated with a crosslinked water-soluble polymer, a sugar alcohol, and water, wherein the content of the polymer particle is
Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming an inkjet image wherein occurrence of processing-caused damage is controlled, when processing a printed matter with an image printed thereon, thereby allowing formation of an image with controlled relief sense. SOLUTION: The method for forming an inkjet image includes an ink application process to provide on a recording medium an ink composition containing a color material and water in an inkjet method to form an image and a processing solvent application process to provide on the image a processing solvent containing wax, water, and a color material at a content rate of less than 0.1 mass%. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an image forming method capable of preventing stacker blocking from being generated in the case that image forming is performed continuously at a high speed or on both faces. SOLUTION: The image forming method includes: a treating liquid providing step for providing a treating liquid on a recording medium having a coating layer and an area of ≥1,250 cm 2 ; an ink providing step for providing an ink composition comprising at least a pigment and two kinds of organic solvents with different boiling points where at least one kind of the organic solvents has a boiling point of ≤200°C on the recording medium after the treating liquid providing step conveyed at a conveying speed of ≥200 mm/s; a drying step for heating and drying the provided treating liquid and the ink composition; a cooling step for cooling the temperature of the recording medium after heating and drying to ≤35°C; and an accumulating step for accumulating the recording medium after cooling to an accumulating part. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an aqueous ink for inkjet recording which keeps a particle size of a pigment dispersion constant, suppresses generation of streaks and irregularities, and gives a uniform printed image even after long-term storage or exposure to high temperature. SOLUTION: The pigment dispersion of vinyl polymer particles includes following components A and B, wherein A is an azo pigment represented by general formula (1) having a specific structural formula with a nitrogen heterocycle, a tautomer thereof, salts thereof, hydrates thereof, or solvates thereof, and B is a vinyl polymer containing a structural unit having a nonaromatic-alicyclic group bonded to a polymer main chain through a linking group and a structural unit having a hydrophilic group. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an image forming method which is superior in the intermittent delivery nature of ink. SOLUTION: An ink composition contains at least (a) polymer particles, (b) color material, and (c) water. Using the ink composition and an image formation device which is provided with a plurality of liquid droplet delivery elements, a common passage which communicates with the two or more liquid droplet delivery elements, respectively, through a feeding passage and the common circulation passage which communicates with the two or more liquid droplet delivery elements through a reflux passage, and be equipped with an ink circulation unit by which the ink composition is fed to the two or more liquid droplet delivery elements from the common passage and circulated through the common circulation passage, the ink composition is delivered to form the picture. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an image recording method which enables recording of an image excellent in scratch resistance by preventing curling after recording while keeping the stability and an ink delivery property. SOLUTION: The image recording method includes an ink application process for applying an ink composition which contains (a) a water-soluble organic solvent having a vapor pressure at 20°C below 10 Pa, a boiling point below 260°C, and a SP value below 25, (b) pigment, (c) polymer particles and (d) water and in which the ratio of (a) the water-soluble organic solvent to total water-soluble organic solvents is at least 30 mass% on a recording medium, and an organic solvent removal process for removing at least part of (a) the water-soluble organic solvent in the ink composition after ink application. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an inkjet recording liquid which can suppress the generation of curl and is excellent in storage stability and discharge stability. SOLUTION: The inkjet recording liquid includes: water; at least one colorant; a first water-soluble organic solvent having a structure represented by general formula (1), the SP value being 27.5 or less, and the molecular weight being 100 to 210; and a second water-soluble organic solvent having a structure represented by general formula (2), the SP value being 27.5 or less, and the molecular weight being 240 to 2,000, wherein the mass ratio of the content of the first water-soluble organic solvent to that of the second water-soluble organic solvent is from 1:3 to 3:1. In the formulae (1) and (2), R 1 represents a hydrogen atom or an alkyl group; R 2 represents a hydrogen atom, an alkyl group, or a group derived from a sugar alcohol; A 1 and A 2 are each an ethyleneoxy group or a propyleneoxy group; n represents an integer from 1 to 3, and m represents an integer from 3 to 40. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation:要解决的问题:提供能够抑制卷曲产生并且储存稳定性和放电稳定性优异的喷墨记录液。 解决方案:喷墨记录液体包括:水; 至少一种着色剂; 具有由通式(1)表示的结构的第一水溶性有机溶剂,SP值为27.5以下,分子量为100〜210; 和具有通式(2)所示结构的第二水溶性有机溶剂,SP值为27.5以下,分子量为240〜2000,其中第一水溶性有机物的含量的质量比 溶剂与第二水溶性有机溶剂的溶剂为1:3至3:1。 在式(1)和(2)中,R 1表示氢原子或烷基; R 2表示氢原子,烷基或衍生自糖醇的基团; A 1 SP>和A 2 SP>分别是乙烯氧基或丙烯氧基; n表示1〜3的整数,m表示3〜40的整数。(C)2009,JPO&INPIT