Patent application number | Description | Published |
20080305262 | INK COMPOSITION, INK SET AND INKJET RECORDING METHOD - An ink composition includes: first particles which are insoluble and dispersed in an aqueous dispersion medium, a polarity of the first particles being one of positive and negative; and second particles which are insoluble and dispersed in the aqueous dispersion medium, the second particles including both a cationic group and an anionic group, the second particles having a zeta potential that changes along with a change in pH of the aqueous dispersion medium, percentage of a water-soluble component in the second particles being not higher than 5% by mass. | 12-11-2008 |
20090041932 | WATER-BASED INK COMPOSITION, INK SET AND IMAGE RECORDING METHOD - There is provided a water-based ink composition including water-insoluble colored particles, and water-insoluble particles that includes a carboxylate emulsifier and a water-insoluble polymer, and an ink set including at least one water-based ink composition, and a treating liquid that changes pH of the water-based ink composition. | 02-12-2009 |
20090082503 | INKJET INK, METHOD OF PRODUCING THE SAME, AND INK SET - The invention provides a method of producing an inkjet ink, the method including at least subjecting a polymer particle dispersion liquid to centrifuge processing, and mixing the polymer particle dispersion liquid that has been subjected to the centrifuge processing and a water-insoluble coloring particle dispersion liquid, as well as an ink set including the produced inkjet ink and a processing liquid that causes the ink to aggregate. | 03-26-2009 |
20090163646 | SELF-DISPERSIBLE POLYMER, WATER-BASED DISPERSION, WATER-BASED INK COMPOSITION, INK SET AND IMAGE FORMING METHOD - The invention provides a self-dispersible polymer having one or more hydrophilic structural units and one or more aromatic group-containing structural units. The content of the aromatic group-containing structural units is in a range from 10 mass % to 95 mass % with respect to the total mass of the self-dispersible polymer, and the content of one or more water soluble components, which are contained in the self-dispersible polymer and exhibit solubility in water when the self-dispersible polymer is dispersed in a water-based medium, is 10 mass % or less with respect to the total mass of the self-dispersible polymer. The invention further provides a water-based dispersion containing the self-dispersible polymer, a water-based ink composition containing a polymer particle containing the self-dispersible polymer, an ink for ink jet recording containing the water-based ink composition, an ink set containing the water-based ink composition, and an image forming method including applying the water-based ink composition. | 06-25-2009 |
20090202722 | INK SET FOR INKJET RECORDING AND IMAGE RECORDING METHOD - An ink set for inkjet recording is provided. The ink set includes: at least one kind of ink composition that contains self-dispersing polymer particles, a color material, a hydrophilic organic solvent and water; and a reaction liquid capable of forming an aggregate upon contact with the ink composition. | 08-13-2009 |
20090246488 | INK-JET RECORDING METHOD AND RECORDED MATTER - An ink-jet recording method is provided. The ink-jet method includes recording an images by ejecting, onto a recording medium by an-inkjet method, a liquid composition containing polymer particles having a glass transition temperature (Tg) higher than the minimum film forming temperature (MFT), a hydrophilic organic solvent, a surfactant, and water under ejection conditions satisfying all of the following (1) to (3):
| 10-01-2009 |
20090291215 | IMAGE FORMING METHOD - The method forms an image by directly depositing aqueous ink ejected from an inkjet recording apparatus onto a recording medium. The method comprises: using, as the inkjet recording apparatus, an apparatus including: an image formation unit having a line head type inkjet head disposed opposite a circumferential surface of an image formation drum, the inkjet head depositing the aqueous ink onto the recording medium while the recording medium is held and conveyed in rotation on the circumferential surface of the image formation drum; and a drying unit arranged on a downstream side of the image formation unit, the drying unit having a drying device disposed opposite a circumferential surface of a drying drum, the drying device drying a solvent in the aqueous ink deposited on the recording medium, the drying unit drying the solvent by means of the drying device while the recording medium is held and conveyed in rotation on the circumferential surface of the drying drum; using, as the recording medium, a special paper which is a recording medium successively laminated from a base paper, a first layer containing a binder and a second layer containing a white pigment, the base paper with the first layer provided thereon having a Cobb water absorbency of not higher than 5.0 g/m | 11-26-2009 |