Abstract: Provided is an inkjet head containing: a substrate having a nozzle hole, and a nozzle plate having a liquid repellent layer on an outermost surface of the substrate on an ink discharge surface side, wherein the nozzle plate has a conductive layer between the substrate and the liquid repellent layer.

Abstract: A fluid ejection device can include a nozzle plate incorporating a non-coplanar surface. The non-coplanar surface can include a hydrophilic region of a hydrophilic material having a water contact angle from about 50° to about 90° and a hydrophobic coating including a hydrophobic material having a water contact angle from about 91° to about 160°.

Abstract: A sprayable and hygroscopic ink for a digital printing process on a fabric includes 3.0 parts by weight to 6.0 parts by weight of a colorant, 0.5 parts by weight to 2.0 parts by weight of a hygroscopic agent, 0.5 parts by weight to 1.0 part by weight of a surfactant, and a balance of a solvent, in which a pH value of the hygroscopic agent is between 6.0 and 8.5 at 25° C., and a particle diameter D90 of the sprayable and hygroscopic ink is between 180 nm and 220 nm.

Abstract: Aspects of the present disclosure are directed to forming a layer of material on a print head. As may be implemented in a manner consistent with examples herein, a layer of material from a transfer film is pressed against a surface of a print head, in which the surface defines fluid nozzle openings that extend from the surface into the print head. Portions of the material pressed onto the surface are therein adhered to the surface and caused to wrap over edges of the surface extending around the openings. The transfer film is removed along with a thickness of the material pressed into contact with the surface that remains adhered to the transfer film, as well as some or all of other regions of the material over the openings. The remaining layer of the material on the surface is thus formed with a uniform thickness.

Abstract: A micronozzle assembly, comprising a reservoir, an array of structures comprising micronozzles, a porous structure positioned between the reservoir and the array, and an electrode within the reservoir, wherein the electrode comprises any of a mesh, a frame along the perimeter of the cavity of the reservoir, or a rod extending into a cavity of the reservoir.

Abstract: A liquid ejection head has at least a structure including an ejection orifice forming member having an ejection orifice for ejecting a liquid and a flow path communicating with the ejection orifice and a flow path forming substrate having a liquid introduction flow path communicating with the flow path and supplying the liquid, and includes: a first titanium oxide film with a pure water contact angle of 40° or less; and a second titanium oxide film with a pure water contact angle of 70° or more, wherein the first titanium oxide film covers the structure including inner walls of the flow path and the liquid introduction flow path and is exposed in the flow path and the liquid introduction flow path, and the second titanium oxide film has a portion covering the first titanium oxide film in a vicinity of an opening end.

Abstract: One example provides a fluidic die including a nozzle layer disposed on a substrate, the nozzle layer having an upper surface opposite the substrate and including a plurality of nozzles formed therein, each nozzle including a fluid chamber and a nozzle orifice extending through the nozzle layer from the upper surface to the fluid chamber. A conductive trace is exposed to the upper surface of the nozzle layer and extends proximate to a portion of the nozzle orifices, an impedance of the conductive trace indicative of a surface condition of the upper surface of the nozzle layer.

Abstract: A method for creating at least one recess, in particular an aperture, in a transparent or transmissive material, includes: selectively modifying the material along a beam axis by electromagnetic radiation; and creating the at least one recess by one or more etching steps, using different etching rates in a modified region and in non-modified regions. The electromagnetic radiation produces modifications having different characteristics in the material along the beam axis such that the etching process in the material is heterogeneous and the etching rates differ from one another in regions modified with different characteristics under unchanged etching conditions.

Abstract: In various examples, biased print gaskets can include a non-transitory machine-readable medium storing instructions executable by a processing resource to charge a material included in a gasket with a first bias voltage to repel print particles from a surface of the gasket, cease charging the material with the first bias voltage and charge the material with a second bias to attract print particles to a surface of the gasket.

Abstract: An inkjet printhead includes a faceplate mounted to a printhead body. The faceplate has a first area in which an array of inkjet nozzle openings is positioned. The area is covered with a hydrophobic coating. A second area of the faceplate outside of the array of inkjet nozzle openings is covered with a first hydrophilic coating that does not contact the hydrophobic coating covering the first area. A third area of the faceplate between the first area and the second area is covered with a second hydrophilic coating. One end of the third area contacts the hydrophobic coating and another end of the third area contacts the first hydrophilic coating to pull ink emitted onto the hydrophobic coating during a purge operation to the second area of the faceplate.

Abstract: A liquid ejection head includes an ejection orifice forming surface provided with an ejection orifice from which a liquid is ejected. The ejection orifice forming surface includes a first region in a vicinity of the ejection orifice, a second region that is further spaced apart from the ejection orifice than the first region and protrudes from the first region in a liquid ejection direction and a third region that connects the first region and the second region. When a contact angle of pure water in the first region is a first contact angle ?1 and a contact angle of pure water in the third region is a third contact angle ?3, ?1 is larger than ?3 by 10 degrees or more.

Abstract: The present invention relates to adhesive formulations for bonding materials, comprising 40 to 80 wt.-% of an epoxy monomer, and 15 to 30 wt.-% of an oxetane monomer, and 0.1 to 10 wt.-% of an adhesion promotor, and 0.1 to 5 wt.-% of a sensitizer, and 1 to 10 wt.-% of a radiation and temperature activable photoinitiator or a mixture of a photoinitiator and a thermal initiator. Further, the present invention relates to a method for bonding at least two parts of which one is at least an inert material, comprising the steps applying to one part an adhesive formulation as described, placing another part to be bond on the one part, exposing the parts to UV light radiation and heat treating of the part.

Abstract: A liquid discharge head includes a nozzle substrate and a cover member. The nozzle substrate includes a liquid discharge surface, a plurality of nozzles, and a continuous recess. The plurality of nozzles is arranged in a nozzle arrangement area on the liquid discharge surface and configured to discharge liquid from the liquid discharge surface. The continuous recess surrounds the nozzle arrangement area on the liquid discharge surface. The cover member is joined to the nozzle substrate with the nozzle arrangement area being exposed. The nozzle arrangement area has a liquid repellency with respect to the liquid. An inside of the recess is lyophilic to the liquid and is provided with an adhesive, and the nozzle substrate is joined to the cover member with the adhesive.

Abstract: A liquid injection head improving electric reliability includes: a substrate including: energy generating elements configured to apply energy for ejection to a liquid, and a substrate upper surface on which terminals respectively connected to electric wirings are provided, an ejection port forming member having: an ejection port forming surface in which the ejection ports for ejecting a liquid are formed, and a back surface on a side opposite to the ejection port forming surface, which is arranged so as to opposite to the substrate upper surface, and a sealant configured to cover connecting portions between the electric wirings and the terminals.

Abstract: Described herein are apparatus and methods of printing in the presence of plasma. The apparatus includes a modular print head comprising an inlet module, a plasma module with movable electrode configurations, and a nozzle module. The modular design of the print head allows for printing on and treatment of surfaces in many different applications.

Abstract: An ink jet printing apparatus includes a radiation-curable ink having a surface tension of 25.0 mN/m or less, and a printing head including a nozzle face having an opening of a nozzle through which the radiation-curable ink is ejected, and a liquid-repellent film on the nozzle face. The liquid-repellent film enables the radiation-curable ink to forms a contact angle of 60.0 degrees or more therewith.

Abstract: A fabric based digital droplet flowmetry (DDF) method and platform are provided utilizing a fluid collection network, a microfluidic junction for droplet formation and removal, and digital counting and measurement circuitry. The fluidic junction has a droplet emitter, such as a nozzle, and droplet receiver separated by a gap. The measurement circuitry detects the transient formation of a liquid bridge (the closed-circuit state) and the breakup of the bridge (the open-circuit state) as an electrical switching event. The duration of the bridge formation only lasts for a few milliseconds. The platform produces consistent droplet volume over varying flow rates and droplet size is controlled by the selection of structural parameters such as nozzle dimensions, channel geometries, surface wettability, and inlet/outlet pressures.

Abstract: According to one embodiment, an inkjet head achieving excellent landing accuracy and an inkjet printer including such an inkjet head are provided. An inkjet head according to one embodiment includes a nozzle plate provided with a nozzle that ejects an ink having a surface tension within a range of 20 to 30 mN/m to a recording medium. The nozzle plate includes a nozzle plate substrate and a fluid repellent film provided on a face opposed to the recording medium of the nozzle plate substrate, and the fluid repellent film contains a fluorine-based compound having a terminal perfluoroalkyl group with 7 or less carbon atoms, and has a static contact angle with pure water within a range of 100° to 120°.

Abstract: An ink jet head includes a nozzle plate substrate having a nozzle for ejecting ink toward a recording medium and an oil repellent film on a surface of the nozzle plate substrate, the surface facing the recording medium. The oil repellent film includes a fluorine compound having a first end and a second end, the first end having a bonding group bonded to the nozzle plate substrate, the second end having a perfluoroalkyl group, and the bonding group being bonded to a bonding group of an adjacent fluorine compound bonded to the nozzle plate substrate.

Abstract: A process for forming inkjet nozzle devices on a frontside surface of a wafer substrate. The process includes the steps of: (i) providing the wafer substrate having a plurality of etched holes defined in the frontside surface, each etched hole being filled with first and second polymers such that the second polymer is coplanar with the frontside surface; (ii) forming the inkjet nozzle devices on the frontside surface using MEMS fabrication steps; and (iii) removing the first and second polymers via oxidative ashing, wherein first and second polymers are different.

Abstract: Provided herein are a jet hole plate, a liquid jet head, a liquid jet recording apparatus, and a method for manufacturing a jet hole plate that can achieve a long life. A jet hole plate according to an embodiment of the present disclosure is a jet hole plate for use in a liquid jet head. The jet hole plate includes a metal substrate having provided therein a plurality of jet holes. The metal substrate has a principal surface having outlets for the jet holes. The principal surface has a surface roughness (arithmetic mean roughness Ra) that is smaller in outlet edge regions of the jet holes than in surrounding regions around the outlet edge regions.

Abstract: The present invention is directed to methods of improving accuracy of droplet metering using at least one on-actuator reservoir as the fluid input. In some embodiments, the on-actuator reservoir that is used for metering droplets includes a loading port, a liquid storage zone, a droplet metering zone, and a droplet dispensing zone. The on-actuator reservoirs are designed to prevent liquid flow-back into the loading port and to prevent liquid from flooding into the droplet operations gap in the dispensing zone.

Abstract: An ink jet head includes a nozzle plate substrate having a nozzle for ejecting ink toward a recording medium and an oil repellent film on a surface of the nozzle plate, the surface facing the recording medium. The oil repellent film comprises a terminal perfluoroalkyl group including a CF2 group, a CF3 group, and a CF3+? group.

Abstract: A liquid ejection head includes an ejection opening member having an ejection opening therein through which a liquid is ejected, and a liquid-repellent layer over the ejection opening member. The liquid-repellent layer contains a fluorine-containing compound, metal oxide particles, and an amphiphilic compound.

Abstract: An inkjet head includes a nozzle plate substrate having a nozzle for ejecting ink toward a recording medium, and an oil repellent layer on a surface of the nozzle plate substrate, the surface facing the recording medium. The oil repellent layer comprises a fluorine-based compound in which neighboring molecules are cross-linked in a direction parallel to the surface, and cross-links of the neighboring molecules are resistant to structural change when subjected to rubbing by an ink wiping blade.

Abstract: In a circulating system which circulates liquid within a liquid ejecting head, thickening of liquid in the vicinity of an ejection port section can be more securely suppressed. The ejection port section includes a first ejection port disposed at an upstream side with respect to an ejecting direction of ink and a second ejection port disposed at a downstream side with respect to the ejecting direction. The second ejection port includes an enlarged diameter portion whose diameter is enlarged in a radially outward manner from at least a part of an opening edge portion of the first ejection port.

Abstract: The present disclosure relates to a heat transfer tube comprising nanostructures formed on the surface, and a method for manufacturing the same, and by forming nanostructures on a heat transfer tube surface, a superhydrophobic surface may be obtained under a high temperature environment as well. In addition, superhydrophobicity may be enhanced by further forming a hydrophobic coating layer on the nanostructure-formed heat transfer tube surface. By using a method of forming nanostructures by dipping the heat transfer tube surface, complex shapes may be coated, and therefore, a plurality of assembled heat transfer tubes may be coated, and damages occurring during a process of assembling the heat transfer tube after coating may be prevented.

Abstract: In an MEMS device, in a Z direction that is a direction in which a first core portion, a plurality of first bump wiring, and a plurality of first individual wiring are laminated, a width between the first core portion and a wiring substrate is wider than a maximum particle diameter of solid particles contained in an adhesive, and a width between a first wiring and a second wiring and a width between a third wiring and a fourth wiring are wider than the maximum particle diameter of the solid particles.

Abstract: A method of making a fluid channel in a printhead structure includes positioning a printhead die on a carrier; compression molding the die into a molded printhead structure; compression molding a first segment of a fluid channel into the molded printhead structure simultaneously with compression molding the die; and materially ablating a second segment of the fluid channel to couple the channel with a fluid feed hole in the die.

Abstract: A droplet deposition head having a fluid chamber connected to a droplet ejection nozzle and to a reservoir for the fluid, and a piezoelectric actuator element formed at least in part by a fluid chamber wall having an electrode thereon, which element is displaceable in response to a drive voltage to generate a pressure in the chamber to eject a droplet of fluid from the chamber through the nozzle wherein the electrode is provided with a passivation coating which comprises, at least in part, a laminate comprising an inorganic insulating layer nearest to or contacting the electrode and an organic insulating layer overlying the inorganic insulating layer wherein defects in the insulating layers tend to be misaligned at the interface there between and wherein the inorganic insulating layer has thickness less than or equal to 500 nm and the organic insulating layer has a thickness less than 3 ?m.

Abstract: There are provided an inkjet recording device that can stably secure liquid-repellent performance on a surface of a liquid-repellent film formed on a nozzle surface for a long term, and a maintenance method thereof. The inkjet recording device includes: an inkjet head that has a nozzle surface in which a nozzle opening of a nozzle to eject a liquid is formed and on which a liquid-repellent film is formed with an amorphous fluorine resin material; a cleaning portion that wipes off and cleans a surface of the liquid-repellent film by a wiping member; and a liquid-repellent performance recovery processing portion that performs liquid-repellent performance recovery processing to recover liquid-repellent performance on the surface of the liquid-repellent film by heating the liquid-repellent film.

Abstract: There is provided a nozzle substrate including a nozzle hole penetrating in a thickness direction. The nozzle substrate includes a main substrate including a first surface and a second surface, an adhesion layer formed on the second surface of the main substrate, and a water repellent film formed on a surface at an opposite side to the main substrate side of the adhesion layer. The nozzle hole includes a recessed part formed on the first surface of the main substrate, and an ink ejecting path formed on a bottom surface of the recessed part and penetrating a bottom wall of the recessed part. The ink ejecting path includes a first ink ejecting path, a second ink ejecting path, and a third ink ejecting path. An inner circumference surface of the third ink ejecting path is approximately perpendicular to the second surface of the main substrate.

Abstract: A nozzle plate includes a nozzle from which a liquid is ejected and that has an opening at one surface side of the nozzle plate and a liquid repelling layer containing a cross-linked fluororesin and formed on the one surface side of the nozzle plate.

Abstract: A liquid ejecting head has a nozzle forming surface to which a nozzle section through which liquid is ejected is open, wherein an electrostatic propensity of the nozzle section due to contact with the liquid is lower than an electrostatic propensity of the nozzle forming surface due to contact with the liquid. The amount of fluorine per unit area in the nozzle section is smaller than the amount of fluorine per unit area in the nozzle forming surface.

Abstract: A liquid jetting head includes a flow channel substrate formed with pressure chambers, an actuator covering the pressure chambers, and a temperature sensor. A dummy pressure chamber is formed in a surface, of the flow channel substrate, in which the pressure chambers are open. The actuator includes: a vibration plate which covers the pressure chambers and the dummy pressure chamber and which has a first surface facing the pressure chambers and a second surface opposite to the first surface, and a piezoelectric body arranged on the second surface of the vibration plate to face the pressure chambers. The temperature sensor is arranged on the second surface of the vibration plate at a position facing the dummy pressure chamber.

Abstract: A method for manufacturing a structure includes, preparing a substrate with a recessed portion provided therein, attaching a film including a photosensitive resin layer containing photosensitive resin therein and a support layer to the substrate to cover the recessed portion with the photosensitive resin layer, irradiating the photosensitive resin layer covering the recessed portion with light via the support layer to form a latent image pattern on the photosensitive resin layer, heating the photosensitive resin layer at 30 degrees Celsius or higher and X degrees Celsius or lower for one minute or longer, wherein a softening point of the photosensitive resin is X degrees Celsius (X?30), separating the support layer from the photosensitive resin layer, heating the photosensitive resin layer at X+10 degrees Celsius or higher, and carrying out development on the photosensitive resin layer.

Abstract: In some examples, a fluid nozzle includes an aperture comprising a first lobe that is shaped as an ellipse, and a second lobe that has a non-circular shape and has a different size than a size of the first lobe. The fluid nozzle further includes protrusions between the first and second lobes extending inward and forming a throat between the first and second lobes.

Abstract: Provided is an ink including: a coloring material; an organic solvent; resin particles; an amine compound; and water, wherein the resin particles include urethane resin particles, and urethane-modified acrylic resin particles including a core portion containing an acrylic resin and a shell portion formed on a surface of the core portion and containing at least a urethane resin, and wherein the amine compound has a boiling point of 120 degrees C. or higher but 200 degrees C. or lower and a molecular weight of 100 or less.

Abstract: A method of making inkjet print heads may include forming recesses in a first surface of a first wafer to define inkjet chambers. The method may also include forming openings extending from a second surface of the first wafer through to respective ones of the inkjet chambers to define inkjet orifices. The method may further include forming a second wafer including ink heaters, and joining the first and second wafers together so that the ink heaters are aligned within respective inkjet chambers to thereby define the inkjet print heads.

Abstract: Embodiments of the disclosed subject matter provide a nozzle assembly and method of making the same, the nozzle assembly including a first aperture formed on a first aperture plate to eject a carrier gas flow having organic vapor onto a substrate in a deposition chamber, second apertures formed on a second aperture plate disposed adjacent to the first aperture to form a vacuum aperture, where the first aperture plate and the second aperture plate are separated by a first separator plate, third apertures formed on a third aperture plate to eject purge gas that are disposed adjacent to the second aperture plate, where the second aperture plate and the third aperture plate are separated by second separator plate, and a third separator plate is disposed adjacent to the one or more third aperture plates to form a gas channel in the one or more third aperture plates.

Abstract: A fluid control valve includes a passage block formed with a passage, a valve seat provided in the passage block, and a valve element to be brought into contact with or separated from the valve seat. The fluid control valve is configured to open and close the passage by movement of the valve element with respect to the valve seat to control a fluid. The fluid control valve further includes a shape-changeable part which changes its shape in association with the movement of the valve element. The shape-changeable part has a surface formed with a monomolecular film of fluorosilane material.

Abstract: A printhead assembly is provided, the printhead assembly including a printhead die, a black fluid slot formed in the printhead die to deliver black printing fluid, and a color fluid slot formed in the printhead die to deliver color printing fluid.

Abstract: An orifice surface is provided with a coating. A molecule for forming the coating is bonded to the orifice surface through a silicon-carbon bond. The molecule constituting the coating comprises exactly one fluoro-atom. A print head is provided with such orifice surface. In addition, a methods of manufacturing such orifice surface and a method of printing using a print head provided with such orifice surface are disclosed.

Abstract: A three-dimensional neural probe electrode array system is described. Planar probes are microfabricated and electrically connected to flexible micro-machined ribbon cables using a rivet bonding technique. The distal end of each cable is connected to a probe with the proximal end of the cable being customized for connection to a printed circuit board. Final assembly consists of combining multiple such assemblies into a single structure. Each of the two-dimensional neural probe arrays is positioned into a micro-machined platform that provides mechanical support and alignment for each array. Lastly, a micro-machined cap is placed on top of each neural electrode probe and cable assembly to protect them from damage during shipping and subsequent use. The cap provides a relatively planar surface for attachment of a computer controlled inserter for precise insertion into the tissue.

Abstract: A method of manufacturing an ink jet print head capable of bonding the printing element substrate to the support surface with high precision in a reduced period of time is provided. For this purpose, raised flat portions are formed in the support surface of the supporting member to provide in an adhesive layer between the printing element substrate and the supporting member a portion of the thermosetting adhesive that is thinner than others. After the relative positions of the printing element substrate and the supporting member are adjusted, the thin portions of the adhesive layer are hardened. This enables the printing element substrate to be bonded to the supporting member in a relatively short period of time. As a result, if there are undulations on the support surface, the printing element substrate can be bonded to the supporting member with high precision, improving the mass productivity of the print head.

Abstract: A nozzle plate for a fluid-ejection device, comprising: a first substrate made of semiconductor material, having a first side and a second side; a structural layer extending on the first side of the first substrate, the structural layer having a first side and a second side, the second side of the structural layer facing the first side of the first substrate; at least one first through hole, having an inner surface, extending through the structural layer, the first through hole having an inlet section corresponding to the first side of the structural layer and an outlet section corresponding to the second side of the structural layer; a narrowing element adjacent to the surface of the first through hole, and including a tapered portion such that the inlet section of the first through hole has an area larger than a respective area of the outlet section of the first through hole.

Abstract: A liquid ejecting head includes a driving element for ejecting a liquid from a nozzle; a wiring electrically connected to the driving element; an accommodation space that accommodates at least a portion of the wiring; and dummy wirings which are arranged in the accommodation space and adsorb sulfur.

Abstract: A liquid discharging head includes a nozzle plate including a nozzle substrate having a plurality of nozzle holes to discharge a liquid therethrough and a plurality of dimples on the discharging surface of the nozzle substrate to hold a liquid repellent material inside the plurality of dimples in a flowable manner and a liquid repellency film formed by the liquid repellent material on the discharging surface of the nozzle substrate.

Abstract: A filling liquid for distribution of an ink jet head of a thermal type, the filling liquid filling a nozzle flow path during distribution of the ink jet head, a hydrophilic region formed on a periphery of an ink discharge port having an opening area of from 100 to 350 ?m2, the filling liquid including: an aqueous medium having at least a water-soluble organic compound and water as constituents; and a dye dissolved in the aqueous medium, a concentration of the dye in the filling liquid being 0.2 mass % or more and 1 mass % or less with respect to a total mass of the filling liquid and the concentration of the dye being equal to or less than saturation solubility with respect to the water-soluble organic compound, wherein the filling liquid has a surface tension of 25 mN/m or more and 34 mN/m or less.

Abstract: A liquid ejection head includes channel forming members and a surface treatment film. The channel forming members are joined to each other via an adhesive agent to form a channel for liquid. The surface treatment film is formed on a surface of at least one of the channel forming members. The surface treatment film is an oxidized film including Si. The oxidized film further includes a transition metal forming a passive film.