Patent application number | Description | Published |
20130235119 | PHOTOSENSITIVE NEGATIVE RESIN COMPOSITION - The invention provides a photosensitive negative resin composition containing (a) an epoxy-group-containing compound, (b) a first onium salt containing a cation portion structure represented by (b1) and an anion portion structure represented by (b2), and (c) a second onium salt containing a cation portion structure represented by (c1) and an anion portion structure represented by (c2). | 09-12-2013 |
20130286098 | LIQUID DISCHARGE HEAD AND METHOD OF MANUFACTURING THE SAME - Provided is a liquid discharge head including: a discharge port that serves to discharge a liquid; a discharge energy generating element that generates energy used to discharge the liquid; a foam chamber that houses the discharge energy generating element and is communicated with the discharge port; and a flow channel that is communicated with the foam chamber and serves to supply the liquid to the foam chamber. An inclined surface is formed between: a side wall of the foam chamber on a side opposite to the flow channel; and a surface of the foam chamber on which the discharge port is formed, and the inclined surface is inclined to a plane on which the discharge energy generating element is formed. | 10-31-2013 |
20130323650 | METHOD FOR MANUFACTURING LIQUID EJECTION HEAD - There is provided a method for manufacturing a liquid ejection head having a substrate and a channel-forming member having an ejection port from which a liquid is ejected, the method including forming a negative photosensitive resin layer on or above the substrate; forming a lens layer on the negative photosensitive resin layer, the lens layer having a lens; exposing the negative photosensitive resin layer through the lens to form an ejection port in the negative photosensitive resin layer; and removing the lens layer. | 12-05-2013 |
20140030659 | LIQUID EJECTION HEAD AND METHOD OF MANUFACTURING THE SAME - A liquid ejection head is manufactured by forming a dent representing a substantially spherical profile so as to include a position for forming an ejection port on a surface of a photosensitive resin layer, then forming a latent image of the ejection port in the dent by an exposure treatment using a projection lens system, and developing the latent image. The center of the top surface of the latent image is shifted to the incoming side of the beam of exposure light from the lowest point of the dent. | 01-30-2014 |
20140125735 | PRINT HEAD AND INKJET PRINTING APPARATUS - A print head includes an energy generating element, a chamber for accommodating liquid, and an ejection opening for ejecting liquid from the chamber, thus applying the energy to the liquid in the chamber from the energy generating element to eject the liquid from the ejection opening, wherein the ejection opening includes at least two projections convex to an inside of the ejection opening in a cross section perpendicular to a liquid ejecting direction and has a tapered angle Φ | 05-08-2014 |
20140272725 | METHOD OF WATER REPELLENT TREATMENT FOR PATTERN SURFACE - Provided is a method of water repellent treatment for a pattern surface, the method including the steps of agitatingly mixing a perfluoropolyether-group-containing silane water repellent, an organic acid, a fluorine-containing solvent capable of dissolving the perfluoropolyether-group-containing silane water repellent and the organic acid, and water to hydrolyze the perfluoropolyether-group-containing silane water repellent, thereby obtaining a partial hydrolysate solution; forming a photosensitive resin layer on a substrate; applying the partial hydrolysate solution onto the photosensitive resin layer to form a water-repellent film; performing patterning exposure to the photosensitive resin layer and the water-repellent film; performing heat treatment to collectively cure an exposed portion of the photosensitive resin layer and the water-repellent film; and removing a non-exposed portion of the photosensitive resin layer and the water-repellent film by development treatment to form a pattern. | 09-18-2014 |
20140309329 | WATER-REPELLENT ANTIFOULING COATING MATERIAL - Provided is a water-repellent antifouling coating material including a condensation product obtained by condensing hydrolyzable silane compounds. The hydrolyzable silane compounds include (a) a hydrolyzable silane compound having a perfluoropolyether group; (b) a hydrolyzable silane compound having an epoxy group; and (c) a hydrolyzable silane compound having a fluorine-containing group other than perfluoropolyether groups. | 10-16-2014 |
20140311661 | PROCESS FOR PRODUCING A LIQUID EJECTION HEAD - A process for producing a liquid ejection head having a substrate and an ejection orifice forming member having an ejection orifice for ejecting liquid, including forming, on the substrate, a photocationically polymerizable resin layer which includes a photocationically polymerizable resin material and becomes the ejection orifice forming member; laminating, on the uncured photocationically polymerizable resin layer, a layer containing a condensation product of a hydrolyzable silane compound having a cationically polymerizable epoxy group and a hydrolyzable silane compound having a fluorine-containing group; laminating a water-repellent layer including a hydrolyzable silane compound having a perfluoropolyether group on the condensation-product-containing layer; subjecting the photocationically polymerizable resin layer, condensation-product-containing layer, and water-repellent layer to pattern exposure; collectively curing exposed portions of the photocationically polymerizable resin layer, condensation-product-containing layer, and water-repellent layer; and removing non-exposed portions of the photocationically polymerizable resin layer, condensation-product-containing layer, and water-repellent layer to form the ejection orifice. | 10-23-2014 |
20150077470 | INK JET RECORDING HEAD AND MANUFACTURING METHOD THEREFOR - Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens. | 03-19-2015 |
Patent application number | Description | Published |
20080259119 | INK JET HEAD - An ink jet head includes an elongated ink supply port extending in a longitudinal direction and a plurality of head groups arranged in a transverse direction crossing with the longitudinal direction. A first array of ink ejection outlets is disposed along one lateral side of an ink supply port, and second and third arrays of ink ejection outlets are disposed along the other lateral side of the ink supply port, wherein widths L | 10-23-2008 |
20090015639 | INK JET RECORDING HEAD - An ink jet recording head includes ejection resistors for generating thermal energy for ejecting ink; warming resistors for generating thermal energy for heating the ink; ejection outlets, provided correspondingly to the ejection resistors, for ejecting the ink; and a recording element substrate provided with ink flow paths provided correspondingly to and for supplying the ink to the ejection outlets, the ejection resistors, the warming resistors, a first ejection outlet array portion including the ejection outlets, and a second ejection outlet array portion including the ejection outlets. An amount of one ink droplet to be ejected from an ejection outlet of the first ejection outlet array portion is different from that from an ejection outlet of the second ejection outlet array portion. The warming resistors are formed above the recording element substrate through the ejection resistors and an insulating layer with respect to a lamination direction of the recording element substrate and are disposed between the ejection resistors and the ink flow paths. The warming resistors include a first warming resistor disposed at the first ejection outlet array portion with a larger ejection amount and a second warming heat generating resistor disposed at the second ejection outlet array portion with a smaller ejection amount. | 01-15-2009 |
20090135226 | INK JET PRINT HEAD AND INK JET PRINTING APPARATUS - When paper dirt that could not be removed completely by the wiping gets trapped in the recessed portions formed in the ejection port face, the paper dirt may interfere with ejection ports, giving rise to a possibility of image impairments. To deal with this problem, the ejection ports and the recessed portions in the print head are shifted from each other so that their positions are not aligned in the wiping direction. | 05-28-2009 |
20090153620 | LIQUID EJECTION HEAD - A liquid ejection head includes a substrate having a supply port through which liquid is supplied and a plurality of energy generating elements provided along the supply port and generating energy for ejecting the liquid, a nozzle plate having nozzles provided therein in correspondence with the energy generating elements, and a channel provided between the substrate and the nozzle plate. The nozzle plate has a groove surrounding the channel. The groove includes a first groove provided in one surface of the nozzle plate at which the nozzle plate is bonded to the substrate, and a second groove provided in another surface of the nozzle plate in which the nozzles are provided. Edges of the first groove have sawtooth shape with a number of very small notches and edges of the second groove are substantially straight. | 06-18-2009 |
20090185000 | INK JET RECORDING HEAD AND INK JET RECORDING APPARATUS - A liquid ejection head includes a substrate including a liquid supply port for supplying liquid and a plurality of ejection energy generating elements, disposed along the liquid supply port, for generating energy for ejecting liquid droplets; and an ejection outlet plate including a plurality of ejection outlets, provided correspondingly to the plurality of ejection energy generating elements, for ejecting the liquid and including a plurality of liquid flow passages, provided correspondingly to the plurality of ejection outlets, for establishing communication between the ejection outlets and the liquid supply port. The ejection outlet plate is provided with a hole portion formed so as to surround the liquid flow passages. The hole portion includes a plurality of first holes which are arranged in a line and which have opening edges having a shape without an acute angle and further includes a plurality of second holes having opening edges formed in a substantially sawtooth shape, as seen in a direction perpendicular to a surface of the ejection outlet plate. | 07-23-2009 |
20090185001 | LIQUID EJECTION RECORDING HEAD - A liquid ejection recording head includes a recording element substrate including a plurality of energy generating elements for generating energy for ejecting liquid, and includes a flow passage-forming member, connected to the recording element substrate, comprising a plurality of ejection outlets corresponding to the plurality of energy generating elements and comprising a plurality of flow passages communicating with the ejection outlets. The flow passage-forming member includes a hole array consisting of holes arranged so as to surround the flow passages and includes a communication passage, for establishing communication between adjacent holes, at a position close to the recording element substrate. | 07-23-2009 |
20110120627 | METHOD OF MANUFACTURING LIQUID DISCHARGE HEAD, AND METHOD OF MANUFACTURING DISCHARGE PORT MEMBER - There is provided a method of manufacturing a liquid discharge head having a substrate including energy generating elements, and a discharge port member which is provided with discharge ports and is joined to the substrate, thereby forming liquid flow paths communicating with the discharge ports. The method performs in this order: preparing a conductive base on which a first insulating resist and a second insulating resist for forming the discharge ports are stacked in this order; performing plating using the first resist and the second resist as masks, and forming a first plated layer; removing the second resist; performing plating on the base using the first resist as a mask, thereby forming a second plated layer so as to cover the first plated layer; removing the base and the first resist, thereby forming the discharge port member; and joining together the substrate and the discharge port member. | 05-26-2011 |
20110139330 | METHOD FOR MANUFACTURING DISCHARGE PORT MEMBER AND METHOD FOR MANUFACTURING LIQUID DISCHARGE HEAD - A method for manufacturing a discharge port member used in a liquid discharge head, comprising in the following order, preparing a substrate at least whose surface is conductive, the substrate having, formed on said surface, a first insulating resist for forming a discharge port and a second insulating resist for forming a recessed portion of a wall of a flow path, forming on surface a first plating layer by plating using said first resist and said second resist as a mask, removing said second resist, forming a second plating layer on an exposed portion of said substrate from which said second resist has been removed, said second plating layer being formed by plating using said first resist as a mask, said second plating layer forming said recessed portion of said wall, and removing said first resist to form said discharge port and removing said substrate. | 06-16-2011 |
20120021360 | METHOD OF MANUFACTURING LIQUID EJECTION HEAD - A method of manufacturing a liquid ejection head includes: exposing a negative organic resin layer to be a flow path forming member except for regions in which an ejection orifice and a fluid resistance portion are to be formed, respectively, and heating the negative organic resin layer and a flow path pattern to move a portion of the negative organic resin layer which corresponds to the fluid resistance portion toward a substrate; and exposing and developing the region of the negative organic resin layer in which the fluid resistance portion is to be formed. | 01-26-2012 |
20120115089 | PROCESS FOR FORMING A HYDROPHILIC COATING AND HYDROPHILIC COATING, AND PROCESS FOR FORMING AN INK JET RECORDING HEAD AND INK JET RECORDING HEAD - A process for forming a hydrophilic coating and a hydrophilic coating, the process including the steps of: (1) forming, on a substrate, a first coating resin layer including a first cationic polymerization resin and a first photoacid generator; (2) laminating, on the first coating resin layer, a second coating resin layer including a second cationic polymerization resin which includes an acid-cleavable linkage in its main chain, and a second photoacid generator which generates methide acid by irradiation with an active energy ray including ultraviolet light; (3) forming a coating by curing the first coating resin layer and the second coating resin layer through exposure of the first coating resin layer and the second coating resin layer to the active energy ray to conduct development; and (4) forming a hydrophilic coating by hydrophilizing a surface of the coating through heat treatment of the coating. | 05-10-2012 |
20120115985 | PROCESS FOR FORMING A HYDROPHILIC COATING AND HYDROPHILIC COATING, AND PROCESS FOR FORMING AN INK JET RECORDING HEAD AND INK JET RECORDING HEAD - A process for forming a hydrophilic coating, including (1) forming, on a substrate, coating resin layer including a cationic polymerization resin having an acid-cleavable linkage in its main chain, and a photoacid generator which generates antimonic acid or an acid having a weaker acid strength than that of antimonic acid by irradiation with active energy ray including ultraviolet light; (2) laminating, on the resin layer, a photoacid generator holding layer including a photoacid generator which generates an acid having a stronger acid strength than that of antimonic acid by irradiation with the energy ray, and a holder which holds the photoacid generator and can be removed in step (3); (3) removing the holding layer and curing the resin layer through exposure of those layers to the energy ray to conduct development; and (4) forming a hydrophilic coating by hydrophilizing a surface of the resin layer through heat treatment thereof. | 05-10-2012 |
20120229556 | PHOTOSENSITIVE RESIN COMPOSITION, METHOD FOR MANUFACTURING STRUCTURAL BODY, AND LIQUID DISCHARGE HEAD - A photosensitive resin composition includes: a cation polymerizable compound; a photoacid generator having an anion portion represented by the formula 1 and a cation portion, | 09-13-2012 |
20120292412 | PHOTOSENSITIVE RESIN COMPOSITION, METHOD FOR PRODUCING STRUCTURE, AND LIQUID DISCHARGE HEAD - A photosensitive resin composition includes (a) a compound polymerizable in the presence of an acid, and (b) a photoacid generating agent including an onium salt having a cationic part structure represented by formula (b1) below and an anionic part structure represented by formula (b2) below, wherein the component (b) absorbs 50% or more of the amount of 365 nm wavelength light absorbed by the photosensitive resin composition, | 11-22-2012 |
20120306961 | NEGATIVE PHOTOSENSITIVE RESIN COMPOSITION, PATTERN FORMATION METHOD, AND LIQUID DISCHARGE HEAD - A photosensitive resin composition includes a cationically polymerizable compound, a photoacid generating agent having an anion portion and a cation portion, and a salt having a cation portion having either one of a quaternary ammonium structure and a quaternary phosphonium structure and an anion portion, wherein the anion portion of the salt is exchanged with the anion portion of a first acid derived from the anion portion of the photoacid generating agent to form a second acid having acid strength that is lower than acid strength of the first acid. | 12-06-2012 |
20120306969 | LIQUID EJECTION HEAD AND METHOD OF PRODUCTION THEREOF - Without being dependent on design changes, a liquid ejection head and a method of production thereof are provided in which when time-division driving, liquid drop landing deviance in the direction of printing is capable of being corrected. In order to achieve this, before performing an exposure in order to form an ejection port, after forming a cavity that is shifted with respect to the location at which the ejection port is formed, exposure is performed. | 12-06-2012 |
20130266901 | METHOD OF MANUFACTURING LIQUID EJECTION HEAD - The manufacturing method includes forming, on a surface of a negative photosensitive resin layer formed on a substrate, a hollow having inclinations at both sides in a cross section taken along a plane perpendicular to a row direction of the ejection orifice, and then forming a latent image in the hollow, thereby forming the ejection orifice so that an angle between a side surface portion thereof and a normal to the outer opening in a cross section of the ejection orifice taken along a plane which passes through a center of the ejection orifice and is perpendicular to the row direction is larger than an angle between the side surface portion and the normal to the outer opening in a cross section of the ejection orifice taken along a plane which includes a center line of the ejection orifice in the row direction and is perpendicular to a substrate surface. | 10-10-2013 |