Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Naotaka Wachi

Naotaka Wachi, Kanagawa JP

Patent application numberDescriptionPublished
20090238973Method of forming inkjet image - The present invention provides a method of forming an inkjet image, the method comprising: providing an inkjet recording ink comprising a colorless water-soluble planar compound having ten or more delocalized pi-electrons in one molecule; impacting a first droplet of the inkjet recording ink on a surface of an image receiving material; impacting a second droplet of the inkjet recording ink, within 50 milliseconds after the first droplet on the recording ink impacts on the surface of the image receiving material, on a surface of the image receiving material at a location where the second and the first droplet contact each other.09-24-2009
20090246378Ink composition, ink set, and image recording method - This invention provides an ink composition comprising at least a dye represented by the following Formula (1), monohydric alcohol having 1 to 5 carbon atoms, and urea:10-01-2009
20090246379Method for forming ink jet image - The present invention provides a method for forming an ink jet image, the method comprising forming an image by using an apparatus to form an image on an image-receiving material by an ink jet system with an ink for ink jet recording containing at least a water-soluble dye, water and a water-soluble organic solvent and, after image formation, discharge and stack a plurality of the image-receiving materials respectively having images formed thereon, wherein the water-soluble organic solvent is selected from a water-soluble diol and/or a pyrrolidone derivative each having an I/O value of 3.0 or more, and is contained in an amount of 40% by mass or more of the entire amount of water-soluble organic solvents in the ink for ink jet recording.10-01-2009
20100071588INKJET RECORDING YELLOW INK, INKJET RECORDING INK SET AND INKJET RECORDING METHOD - Disclosed is an inkjet recording yellow ink containing a water-soluble azo dye (y03-25-2010
20100075041INKJET RECORDING YELLOW INK, INKJET RECORDING INK SET AND INKJET RECORDING METHOD - Disclosed is an inkjet recording yellow ink comprising at least one water-soluble azo dye selected from the group consisting of a compound represented by formula (Y) described below and a salt thereof and at least one glycol ether represented by formula (A) described below, wherein the glycol ether is contained in an amount of 25% by mass to 100% by mass relative to a total amount of water-soluble organic solvent in the ink.03-25-2010
20100080908INK SET AND METHOD FOR FORMING IMAGE - An ink set including a yellow ink, a magenta ink and a cyan ink, the magenta ink and at least one of the yellow ink or the cyan ink each containing an antioxidant having a sulfur atom in the molecule thereof, and the magenta ink containing a dye represented by the following formula (M-1), is provided.04-01-2010
20100242791INKJET INK COMPOSITION AND INKJET RECORDING METHOD - An inkjet ink composition includes a sulfoxide compound, a water-soluble dye having an aromatic heterocycle in a molecule, water and a water-soluble organic solvent, wherein the sulfoxide compound has a content of from 1% by weight to less than 10% by weight, based on the total weight of the composition. An inkjet recording method includes using an inkjet printer having a silicon oxide layer or a silane coupling layer in at least part of a component with which ink is brought into contact, and ejecting an inkjet ink composition from the inkjet printer to record an image on an inkjet recording medium, wherein the inkjet ink composition contains a sulfoxide compound, a water-soluble dye, and the sulfoxide compound has a content of from 1% by weight to less than 10% by weight, based on the total weight of the composition.09-30-2010

Naotaka Wachi, Shizuoka-Ken JP

Patent application numberDescriptionPublished
20090035535INK-JET INK AND METHOD OF PRODUCING THE SAME, COLOR FILTER AND METHOD OF PRODUCING THE SAME, DISPLAY DEVICE, AND METHOD OF FORMING FUNCTIONAL FILM - An ink-jet ink used to form a functional film by ejecting an ink droplet using an ink-jet system onto a non-penetrative substrate includes a compound that has an amino group and an alkylene glycol portion within a molecule and serves as a wettability enhancer. Also provided are a method of producing the ink-jet ink, a method of producing a color filter using the ink-jet ink, and a method of forming a color filter or a functional film.02-05-2009

Naotaka Wachi, Ashigarakami-Gun JP

Patent application numberDescriptionPublished
20110229643INK SET - An ink set containing at least one ink of which viscosity at 70° C. is 100 mPa·s or more, and at least one ink of which color hue is the same as the above ink and of which viscosity at 70° C. is 30 mPa·s or less.09-22-2011