Patent application number | Description | Published |
20090088521 | AQUEOUS COLORANT DISPERSION, METHOD OF PRODUCING THE AQUEOUS COLORANT DISPERSION, AND AQUEOUS INK FOR INKJET RECORDING - The invention provides an aqueous colorant dispersion having: a colorant (A); a polymer (B); and an aqueous liquid medium (I), a method of producing the dispersion, and an aqueous ink for inkjet recording using the dispersion. The polymer (B) is a copolymer containing a hydrophilic structural unit and a hydrophobic structural unit. The hydrophobic structural unit contains a hydrophobic structural unit (a) containing a benzene ring which is not directly bonded to an atom that forms a main chain of the polymer (B). The hydrophilic structural unit contains a hydrophilic structural unit (b) containing an ionic group. The polymer (B) contains a structural unit (c) different from the hydrophobic structural unit (a) and the hydrophilic structural unit (b). A content of the hydrophobic structural unit and a content of the structural unit (c) with respect to a total mass of the polymer (B) are respectively in specific ranges. | 04-02-2009 |
20090131577 | PIGMENT COMPOSITION, WATER-BASED PIGMENT DISPERSION, METHOD OF PRODUCING WATER-BASED PIGMENT DISPERSION, WATER-BASED INK FOR INK JET RECORDING, AND POLYMER COMPOUND - The invention provides a pigment composition having a pigment and a dispersant, wherein the dispersant is a copolymer comprising: a repeating unit (a) having a specific structure; and a repeating unit (b) having an ionic group. The invention ether provides a water-based pigment dispersion containing: the pigment composition; and water or a water-based carrier medium containing water and an organic solvent. The invention further provides a method for producing the water-based pigment dispersion. The invention further provides a water-based ink for ink jet recording containing the water-based pigment dispersion. The invention further provides a polymer compound having, as copolymerization components, a monomer having a specific structure, (meth)acrylic acid, and benzyl (meth)acrylate. | 05-21-2009 |
20110074867 | AQUEOUS PIGMENT DISPERSION, INK COMPOSITION, AND IMAGE FORMING METHOD - An aqueous pigment dispersion including: (A) a pigment; (B) a dispersion polymer having a neutralization degree of from 50% to 90% and a solubility of from 0.2 g to 0.8 g per 5 ml of water (25° C.), and containing an acidic group and a hydrophobic structural unit (a) having an aromatic ring linked via a linking group to an atom included in a main chain, a content ratio of the aromatic ring being from 10% by mass to less than 20% by mass based on a total mass of the polymer; and (C) a water-based liquid medium. | 03-31-2011 |
20110227991 | INK COMPOSITION, INK SET AND INKJET RECORDING METHOD - An ink composition includes: a pigment; water; a polymerizable monomer that is capable of being polymerized by an active energy ray; and an initiator that is capable of initiating polymerization of the polymerizable monomer by the active energy ray, wherein a number of particles contained in the ink composition having a particle diameter of 0.8 μm or more is 20,000 particles/μl or less. | 09-22-2011 |
20110234684 | IMAGE FORMING METHOD - Provided is an image forming method including applying an ink that forms an image by inkjetting an ink composition containing coloring particles, a water-soluble polymerizable compound, a polymerization initiator and water onto a recording medium in which a base paper, a first layer containing a binder, and a second layer containing a white pigment are layered in this order, and a Cobb water absorption degree on a surface of the first layer placed on the base paper is 5.0 g/m | 09-29-2011 |
20110242192 | IMAGE FORMING METHOD - The present invention provides an image forming method including ejecting an ink composition, using an ink jet apparatus, onto a recording medium thereby forming an image, the ink composition comprising a pigment, a water-soluble polymerizable monomer which is polymerized by actinic energy rays, and water, and the recording medium being composed of a base paper, a first layer including a binder, and a second layer including a white pigment and an acidic substance, which are disposed in this order, wherein a surface of the first layer is disposed on the base paper and has a Cobb water absorption capacity of 2.0 g/m | 10-06-2011 |
20110249055 | INK COMPOSITION, METHOD OF PRODUCING THE SAME, INK SET, AND IMAGE FORMING METHOD - The present invention provides an inkjet ink composition, which has excellent ink-ejection reliability over a long time and capability of forming an image without defects such as white spots, and which includes: a pigment coated with a dispersant polymer; a water soluble polymerizable compound; a polymerization initiator; and water, the dispersant polymer being formed from a water soluble dispersant by crosslinking with a crosslinking agent. | 10-13-2011 |
20120056930 | ACTIVE ENERGY RAY-CURABLE INK COMPOSITION, INKJET RECORDING METHOD, AND INKJET PRINTED ARTICLE - An active energy ray-curable ink composition is disclosed which includes a colorant, a dispersant, a polymerizable compound and water. The dispersant includes a hydrophobic repeating unit including a residue obtained by removing one hydrogen atom from a compound selected from the group consisting of a benzene ring-containing compound, an aromatic hydrocarbon ring-condensed polycyclic compound, a heteromonocyclic compound and a hetero ring-condensed heteropolycyclic compound; a hydrophilic repeating unit including an ionic group; and a hydrophilic repeating unit including a nonionic group. | 03-08-2012 |
20120200651 | INK SET AND IMAGE FORMING METHOD - An ink set is disclosed which includes a yellow ink composition containing a resin-coated yellow pigment in which a yellow pigment is coated with a crosslinked water-soluble resin, a water-soluble polymerizable compound and water; a magenta ink composition containing a resin-coated magenta pigment in which a magenta pigment is coated with a crosslinked water-soluble resin, a water-soluble polymerizable compound and water; a cyan ink composition containing a resin-coated cyan pigment in which a cyan pigment is coated with a crosslinked water-soluble resin, a water-soluble polymerizable compound and water; and a treatment liquid containing an aggregating agent for aggregating components in the ink compositions. | 08-09-2012 |
20120249701 | BLACK INK COMPOSITION, INK SET, AND IMAGE FORMING METHOD - A black ink composition includes a resin-coated carbon black containing a water-soluble resin and carbon black, a water-soluble polymerizable compound, a polymerization initiator, and water, wherein an average primary particle diameter of the carbon black is 20 nm or more, and an absorbance ratio of absorbance at a wavelength of 350 nm with respect to absorbance at a wavelength of 600 nm (absorbance at a wavelength of 350 nm/absorbance at a wavelength of 600 nm), when the black ink composition is diluted 5,000-fold with water, is 1.9 or lower. | 10-04-2012 |
20130050366 | BLACK INK COMPOSITION, INK SET, AND IMAGE FORMING METHOD - A black ink composition is provided which suppresses change in hue and can form an image with superior blocking resistance and scratch resistance. | 02-28-2013 |
20140287206 | WHITE INK COMPOSITION, INK SET FOR FORMING MULTIPLE LAYERS, IMAGE FORMING METHOD AND PRINTED MATTER - The invention provides a white ink composition for inkjet recording, including: titanium dioxide having an average primary particle diameter of from 200 nm to 350 nm; a hydrophilic, layered clay mineral; a water-soluble resin; and water. The invention further provides: an ink set for multilayer formation including the white ink composition and an ink composition for inkjet recording, including a colorant having a hue other than white; an image forming method including applying the white ink composition to a recording medium and irradiating the white ink composition applied to the recording medium with an active energy ray; and a printed matter including an image formed on a recording medium by the image forming method. | 09-25-2014 |
20140288208 | INK COMPOSITION FOR INKJET - An ink composition for an inkjet including titanium dioxide having an average primary particle diameter of 200 nm or more; a water-soluble resin; self-dispersing resin particles having an average particle diameter of 40 nm or less; and water. | 09-25-2014 |