Abstract: A microfluidic print head of a printer has a distal face, an injection channel, a suction channel, a groove, and a light source or an optical waveguide. The injection channel is configured to inject an ink onto a substrate and leads onto the distal face by an injection opening The suction channel is configured to suck up the ink and leads onto the distal face by a suction opening. The groove is defined on the distal face and into which the suction opening leads.

Abstract: A liquid discharge head substrate including a discharge opening through which a liquid is discharged, a base that includes a surface in which a heat generating element that generates heat to discharge the liquid through the discharge opening is provided, a first electrode that covers the heat generating element, a flow passage through which the liquid flows from a supply port that supplies the liquid, through the surface of the first electrode, and towards a collection port that collects the liquid, and a second electrode provided inside the flow passage, the second electrode together with the first electrode forming an electric field in the liquid, in which the second electrode is provided downstream of the first electrode in a flow direction of the liquid flowing towards the collection port from the supply port.

Abstract: The present invention provides an inkjet ink comprising: 6-35% by weight of NVC; 5-60% by weight of PEA; 15-35% by weight of a C8.12 alkane diol di(meth)acrylate; a radical photoinitiator; and a colorant, wherein the percentages by weight are based on the total weight of the ink. The present invention further provides an inkjet ink set wherein at least one of the inks in the set, preferably all of the inks in the set, is an inkjet ink as defined above. Furthermore, the present invention provides a method of inkjet printing comprising inkjet printing the inkjet ink or inkjet ink set as defined above onto a substrate and curing the ink.

Abstract: A liquid discharge head substrate including a discharge opening through which a liquid is discharged, a base that includes a surface in which a heat generating element that generates heat to discharge the liquid through the discharge opening is provided, a first electrode that covers the heat generating element, a flow passage through which the liquid flows from a supply port that supplies the liquid, through the surface of the first electrode, and towards a collection port that collects the liquid, and a second electrode provided inside the flow passage, the second electrode together with the first electrode forming an electric field in the liquid, in which the second electrode is provided downstream of the first electrode in a flow direction of the liquid flowing towards the collection port from the supply port.

Abstract: Provided is a curable composition which has excellent thin-film curability and which can form, via the application of light and/or heat, a cured product having heat resistance and thermal yellowing resistance at excellent levels. This curable composition contains cationically curable compounds and a cationic-polymerization initiator. The cationically curable compounds include an epoxy compound (A) in an amount of 10 to 90 weight percent of the total weight of the cationically curable compounds, and an oxetane compound (B) in an amount of 5 to 40 weight percent of the total weight of the cationically curable compounds. The cationic-polymerization initiator includes an onium borate salt (C). The onium borate salt (C) preferably has an anionic moiety selected from [(C6H5)B(C6F5)3]?, [(C6H5)B((CF3CF2)2C6H2F)3]?, and [(C6H5C6H4)B(C6F5)3]? and a cationic moiety selected from arylsulfonium ions.

Abstract: A nozzle plate includes a nozzle base member including a plurality of nozzle holes formed therethrough, the plurality of nozzle holes serving as nozzles that discharge droplets; and a liquid-repellent film of a liquid-repellent material formed on a droplet discharge surface of the nozzle base member, the liquid-repellent material containing a liquid-repellent group. Each of the plurality of nozzle holes includes a straight hole part, the straight hole part extending from the droplet discharge surface of the nozzle base member and having a constant diameter in a thickness direction of the nozzle base member. The liquid-repellent group contained in the liquid-repellent material is attached to an inner nozzle wall of the straight hole part. When the nozzle hole is supplied with pure water, a meniscus of the pure water stays in the straight hole part.

Abstract: Provided are a radiation-curable ink composition including phenoxyethyl acrylate (A) in an amount of from 20 to 55 mass % of the total reaction components, a multifunctional acrylate (B) in an amount of from 20 to 50 mass % of the total reaction components, and a black pigment (F1); and a radiation-curable ink composition including phenoxyethyl acrylate (A) in an amount of from 20 to 55 mass % of the total reaction components, a multifunctional acrylate (B) in an amount of from 10 to 50 mass % of the total reaction components, and a yellow pigment (F2).

Abstract: Disclosed is an actinic radiation-curing type ink composition comprising (Component A) a monofunctional radically polymerizable monomer and (Component B) a polyfunctional acrylate oligomer having a glass transition temperature of no greater than 20° C. and having an acrylate equivalent of at least 300 g/eq, Component A comprising (Component A-1) an N-vinyl compound and (Component A-2) an acrylamide derivative, Component A having a content of at least 70 mass % of the entire ink composition, and Component A-1 having a content of at least 18 mass % of the entire ink composition.

Abstract: An ink composition includes: (Component a) a polymerizable compound having an ethylenically unsaturated double bond; (Component b) a polymerization initiator; (Component c) water; and (Component d) a polyhydric alcohol having an alkyleneoxy chain, wherein the (Component a) polymerizable compound includes a monofunctional polymerizable monomer having a (meth)acrylamide structure, and a content of the monofunctional polymerizable monomer is 5% by mass or more with respect to a total content of the (Component a) polymerizable compound.

Abstract: A radiation curable gel ink printing system is provided that includes a radiation source configured to emit UV light having short wavelength components. The disclosed systems and methods transport a substrate having radiation curable gel ink deposited thereon to the radiation source to expose the ink to the radiation source. The exposure at the radiation source may be continuous or pulsed. The radiation source may be configured a distance away from the radiation curable gel ink deposited on the substrate. The radiation source pre-treats the radiation curable gel ink before spreading the radiation curable gel ink at a contact-leveling nip at which a contact member applies pressure to the partially cured radiation curable gel ink against the substrate. The radiation curable gel ink is preferentially cured to allow spreading of the radiation curable ink by the contact member while limiting offset of the ink onto the contact member.

Abstract: An ink composition is provided that includes (A) a monofunctional monomer comprising an acrylate monomer represented by Formula (I) and (B) a photopolymerization initiator represented by Formula (II), the monofunctional monomer (A) having a content of 30 to 90 wt %. There is also provided an inkjet recording method that includes (a1) a step of discharging onto a recording medium the ink composition according to any one of Claims 1 to 11; and (b1) a step of curing the ink composition by irradiating the discharged ink composition with actinic radiation.

Abstract: The present application relates to a surface treatment composition for inkjet media, including: starch; fluorescence whitening agent selected from the group consisting of nonionic, cationic, and anionic fluorescence whitening agents, and combinations thereof; metallic salt including cation and anion, the cations being selected from monovalent metal ions, multiple valent metal ions, and combinations and derivatives thereof, and the anions being selected from the group consisting of fluoride, chloride, iodide, bromide, nitrate, phosphate, chlorate, acetate, and combinations and derivatives thereof; and chemical chelant. The application also relates to a method of making surface-treated inkjet media, including providing a base stock including cellulose paper and applying a surface treatment composition to the base stock. The application also relates to a paper coated with the surface treatment composition and a system of inkjet printing with surface treated inkjet media.

Abstract: An orifice health detection device includes a fixed array of ink ejecting orifices, the ink ejecting orifices configured to eject at least one ink drop, a light source that produces a light beam configured to scatter light from the at least one ejected ink drop, and a light detector configured to detect light scattered from the at least one ejected ink drop.

Abstract: A liquid ejecting head includes a substrate, a nozzle forming member for forming on a principal surface of the substrate a nozzle comprising a flow passage of liquid and an orifice for ejecting the liquid, and a dummy pattern. The dummy pattern has substantially the same dimension as at least a part of the nozzle and is formed so that a cross-section of the dummy pattern is exposed at an end surface of the nozzle forming member.

Abstract: An ink composition includes (A) at least one polymerizable compound selected from the group consisting of a monofunctional radically polymerizable monomer having an aliphatic cyclic structure, an N-vinyllactam, and an aromatic monofunctional radically polymerizable monomer, (B) a radical polymerization initiator, (C) a pigment, and (D) a graft copolymer having a repeating unit represented by the formula below in a graft chain: wherein R denotes a hydrogen atom or a methyl group, X denotes a single bond, —O—, —CO—, —COO—, —CONR1—, —OCO—, or a phenylene group, R1 denotes a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, L denotes a single bond or a divalent linking group, Z denotes —NR2R3, R2 and R3 independently denote a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, and R2 and R3 may be bonded to each other to form a ring.

Abstract: A droplet discharge head including a nozzle substrate having nozzle openings, a cavity substrate having discharge chambers that communicate with the nozzle openings and discharge droplets from the nozzle openings, a reservoir substrate having a reservoir concave portion that serves as a reservoir which communicates commonly with the discharge chambers. The reservoir substrate is provided between the nozzle substrate and the cavity substrate and a resin thin film is formed on a whole inner face of the reservoir concave portion and on a bottom face of a second concave portion. The second concave portion is provided in a peripheral of the reservoir concave portion and has a depth which is smaller than the depth of the reservoir concave portion. The resin thin film is cut circularly so as to surround the reservoir concave portion, and a part of the resin thin film serves as a diaphragm buffering pressure variation. serves as a diaphragm buffering pressure variation.

Abstract: The present invention provides an ink composition including a polymerization initiator and a monofunctional (meth)acrylate having a —CONH— bond in the molecule thereof. The present invention also provides an ink jet recording method and a planographic printing plate producing method using the ink composition, and a planographic printing plate prepared by the planographic printing plate producing method.

Abstract: The inkjet recording apparatus which forms an image on a recording medium by applying a first liquid containing coloring material and a second liquid containing no coloring material or the coloring material of not greater than 0.1 wt %, on the recording medium, includes: a liquid application device which applies the second liquid on the recording medium and then ejects droplets of the first liquid toward the second liquid applied on the recording medium; and an electron beam irradiation device which radiates an electron beam on the first liquid and the second liquid on the recording medium, wherein: at least one of the first liquid and the second liquid contains a polymerizable compound which is polymerized when irradiated with the electron beam; and the electron beam irradiation device radiates the electron beam at an acceleration voltage of 40 kV through 60 kV.

Abstract: An inkjet printhead having: an array of ink chambers, each having a nozzle and a plurality of heater elements for generating vapour bubbles to eject ink through the nozzle, the heater elements being suspended for immersion in the ink; and, a cross bracing structure for maintaining the spacing between the heater elements.

Abstract: An ink-jet printhead using a laser to expel ink includes an ink chamber to be filled with ink and an ink channel to supply the ink chamber with ink, the ink chamber and the ink channel formed in a passageway plate, a cover plate provided on the passageway plate, an ink ejection hole formed through the cover plate at a position corresponding to the ink chamber, a condenser lens provided on a bottom surface of the passageway plate at a position corresponding to the ink chamber, the laser irradiating a laser beam through the condenser lens and directly onto the ink contained in the ink chamber, to generate pressurized waves that vibrate a surface of the ink which causes an ink droplet to be expelled through the ink ejection hole from the surface of the ink.

Abstract: A liquid drop discharge device such as an ink jet device is provided that discharges a liquid drop with high precision. The liquid drop is discharged from a discharge head to a target position of a substrate and a cylindrical laser beam surrounds a trajectory that the liquid drop follows. As a result, the liquid drop can be rebounded by the laser beam to land at a target position of the substrate even if the course of the liquid drop discharged from the discharge head is diverted out of its predetermined trajectory.

Abstract: An ink composition is provided that includes (A) an N-vinyllactam, (B) a radically polymerizable compound, and (C) a polymerization initiator, the content of the N-vinyllactam (A) being at least 10 wt % of the ink total weight, and the content ratio by weight of (A):(B) being 1:8.5 to 1:1. There is also provided an inkjet recording method that includes (a1) a step of discharging the ink composition onto a recording medium and (b1) a step of curing the ink composition by irradiating the discharged ink composition with actinic radiation. A printed material recorded by the inkjet recording method is also provided. Furthermore, a process for producing a lithographic printing plate is provided that includes (a2) a step of discharging the ink composition onto a hydrophilic support and (b2) a step of curing the ink composition by irradiating the discharged ink composition with actinic radiation so as to form a hydrophobic image on the hydrophilic support by curing the ink composition.

Abstract: An ink composition is provided that includes (A) one type of compound (monomer (A)) selected from the group consisting of a difunctional (meth)acrylic acid ester or amide having an alkylene group of 6 to 12 carbons, and a difunctional vinyl ether having an alkylene group of 6 to 12 carbons, (B) a polymerization initiator, and (C) a colorant. There is also provided an inkjet recording method that includes a step (a) of discharging the ink composition onto a recording medium and a step (b) of irradiating the discharged ink composition with actinic radiation so as to cure the ink composition. Furthermore, a process for producing a lithographic printing plate is provided that includes a step (a?) of discharging the ink composition onto a hydrophilic support and a step (b?) of irradiating the discharged ink composition with actinic radiation so as to cure the ink composition, thus forming a hydrophobic image on the hydrophilic support by curing the ink composition.

Abstract: A sulfonium salt is provided that has a cation represented by Formula (II) (R1? to R13? in Formula (II) independently denote a hydrogen atom or a substituent, and may be bonded to each other to form a ring, provided that at least one of R1? to R8? denotes a halogen atom or a haloalkyl group). There are also provided a curable composition that includes the sulfonium salt, and an ink composition that includes the curabie composition. Furthermore, there are also provided an inkjet recording method employing the ink composition, and a process for producing a lithographic printing plate, the process including discharging the ink composition onto a hydrophilic support. A printed material and a lithographic printing plate thus obtained are also included in the present invention.

Abstract: The invention provides an ink composition which includes a polymerization initiator, a polymerizable compound, a colorant, and a high molecular compound having a repeating unit represented by the following formula (I). In formula (I), n represents an integer of from 1 to 5.

Abstract: An ink composition is provided that includes (A) an acid-generating compound having an anion represented by any one of Formulae (I) to (XI), (B) a cationically polymerizable compound, and (C) a colorant. (In the formulae, R1 to R3 independently denote a monovalent organic group, Rb1 to Rb3, Rf1, and Rf2 independently denote a perfluoroalkyl group, a perfluoroaryl group, or an aryl group substituted with at least one fluorine atom or perfluoroalkyl group, X1 to X3 independently denote a monovalent organic group, and Y1 denotes a hydrogen atom or a monovalent organic group.

Abstract: A laser-actuatable inkjet printing system for printing an image from digital raster data onto a print medium is disclosed. The printing system includes at least a printhead having a laser-penetrable chamber for holding ink therein. The printhead also includes a plurality of nozzles defined through a wall of the printhead to connect to the chamber. The printing system further includes a laser for producing a laser beam that is scanned across the chamber for selectively expelling droplets of ink. The expulsion of ink is in accordance with the digital raster data. Ink is expelled through multiple adjacent nozzles simultaneously onto the print medium to form each pixel of the image.

Abstract: A liquid drop discharge device such as an ink jet device is provided that discharges a liquid drop with high precision. The liquid drop is discharged from a discharge head to a target position of a substrate and a cylindrical laser beam surrounds a trajectory that the liquid drop follows. As a result, the liquid drop can be rebounded by the laser beam to land at a target position of the substrate even if the course of the liquid drop discharged from the discharge head is diverted out of its predetermined trajectory.

Abstract: A recording method of ink jet system which employs a recording solution composed of a dye which vaporizes more than 90 wt % upon heating at a temperature above 300.degree. C., leaving residues in an amount less than 10 wt %, and a solvent having a boiling point higher than 150.degree. C. which dissolves or disperses the dye more than 5 wt % at a temperature below 50.degree. C., the recording solution being heated at the time of recording by the recording solution heating unit which has a porous structure formed thereon which is composed of fine parts whose dimension in the plane direction is 0.2-3 .mu.m and whose dimension in the direction perpendicular to the plane direction is 2-15 .mu.m. This recording method makes use of the advantage of both the thermal transfer system and the ink jet system.

Abstract: An ink jet type head has a plurality of ink ejection electrodes in a form of parallel strips formed on a base. The ink ejection electrodes include first ejection electrode and second ejection electrodes provided adjacent to two sides of the first ejection electrode. There is provided a voltage driving unit for applying an ejection voltage for ink ejection to the first ejection electrode. In the voltage driving unit, the ejection voltage to cause the ink to be ejected is applied to the first ejection electrode and an auxiliary voltage ineffective to cause the ink to be ejected is applied to the second ejection electrodes. This enables the reduction of potential differences between the first and second ejection electrodes, thus suppressing movement of color particles of the ink between them.

Abstract: A thermal ink jet printhead has two or more groups of selectively activatable heating elements and associated nozzles with the heating elements and nozzles within each group having the same geometric parameters, but the geometric parameters of the heating elements and nozzles between groups being different, so that the ejection of droplets from the nozzles of different groups have different ink volumes. When continuous tone and grey scale printing is desired various combinations of nozzles from different groups are used to compose a halftone cell, and when high resolution text printing is desired, either the nozzles from one group or the nozzles from both groups in fixed combinations are used to eject ink droplets onto a recording medium.