Abstract: A liquid dispenser includes a first liquid supply that provides a carrier liquid under pressure that flows from the first liquid supply through a first liquid supply channel through a liquid dispensing channel through a liquid return channel and back to the first liquid supply continuously during a drop dispensing operation. A second liquid supply provides a functional liquid to the liquid dispensing channel through a second liquid supply channel. A drop formation device, associated with an interface of the second liquid supply channel and the liquid dispensing channel, is selectively actuated to form a discrete drop of the functional liquid in the carrier liquid flowing through the liquid dispensing channel. The functional liquid is immiscible in the carrier liquid. A drop ejection device is selectively actuated to divert the discrete drop of the functional liquid and a portion of the carrier liquid flowing through the liquid dispensing channel toward the outlet opening of the liquid dispensing channel.

Abstract: A liquid discharge apparatus includes: a liquid discharge head which includes; a discharge port to discharge a liquid; and a substrate including: an energy generating element for generating thermal energy to discharge the liquid from the liquid discharge port; a pair of electrodes connected to the energy generating element for driving thereof; an insulating layer of an insulating material provided to cover the energy generating element; and a metal layer of a metal material provided corresponding to the energy generating element to cover the insulating layer; and a driver unit which sets a first potential of one of the pair of electrodes substantially equal to the potential of the liquid and a second potential of the other one of the pair of electrodes lower than the first potential to drive the energy generating element.

Abstract: Methods and apparatus teach a substrate wafer having a plurality of plugs configured there within. The method also includes depositing and patterning a layer of a second metallic material over the substrate wafer, providing a layer of a dielectric material of a predetermined thickness over the patterned layer of the second metallic material, and conducting chemical mechanical polishing of the layer of the dielectric material to form a planarized top surface while exposing the patterned layer of the second metallic material. The method further includes cleaning the planarized top surface, depositing and patterning a resistor film over the planarized top surface, depositing one or more blanket films over the patterned resistor film, and patterning and etching the one or more blanket films. Further disclosed are planar heater structures and additional methods for fabricating the planar heater structures.

Abstract: A liquid ejector includes a substrate, a heating element, a dielectric material layer, and a chamber. The substrate includes a first surface. The heating element is located over the first surface of the substrate such that a cavity exists between the heating element and the first surface of the substrate. The dielectric material layer is located between the heating element and the cavity such that the cavity is laterally bounded by the dielectric material layer. The chamber, including a nozzle, is located over the heating element. The chamber is shaped to receive a liquid with the cavity being isolated from the liquid.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: A method of compensating for a dead nozzle in a stationary pagewidth printhead. The method includes the steps of: (i) identifying the dead nozzle; (ii) selecting a functioning nozzle in a same nozzle row as the dead nozzle; and firing ink droplets from the selected functioning nozzle at a primary dot position associated with the dead nozzle.

Abstract: An aqueous inkjet printing fluid composition for use in an inkjet printer having a silicon-based material which contacts the aqueous printing fluid composition, including in a concentration sufficient to inhibit corrosion of the silicon-based material when contacted by the aqueous printing fluid composition a soluble metal ligand complex of Formula (I): wherein M represents a divalent or a trivalent metal; each of X and R may independently be chosen from the group consisting of halogen, cyano, carboalkoxy, alkyl, alkoxy, aryl, hetaryl, carboxy, hydroxy, sulfo and phospho substituents; n and m independently represent an integer from 0-3; and the number of ligands y is 2 or 3; with the proviso that n+m is an integer from 1 to 6, and at least one of X and R comprises a solubilizing group capable of imparting water solubility to the complex. The useful lifetime of microelectromechanical fluidic devices based on silicon fabrication is extended.

Abstract: Provided is a liquid discharge head including a discharge port; an energy application chamber that includes a heat generating element, and communicates with the discharge port; and a flow path that supplies the liquid to the energy application chamber, wherein the energy application chamber includes a first energy application chamber communicating with the discharge port, and a second energy application chamber communicating with the first energy application chamber and the flow path, a distance between facing side walls of the second energy application chamber is larger than that of the first energy application chamber in a section perpendicular to a liquid supply direction from the flow path to the energy application chamber, and for side walls of the energy application chambers formed on a back side in the liquid supply direction, the first energy application chamber and the second energy application chamber share the wall.

Abstract: A liquid dispenser includes a liquid supply channel, a liquid return channel; and a liquid dispensing channel. The liquid dispensing channel includes a wall. The wall includes a surface. A portion of the wall defines an outlet opening. The outlet opening includes a downstream edge relative to a direction of liquid flow through the liquid dispensing channel. The downstream edge is sloped relative to the surface of the wall of the liquid dispensing channel. A liquid supply provides liquid that flows from the liquid supply channel through the liquid dispensing channel to the liquid return channel. A diverter member selectively diverts a portion of the flowing liquid through the outlet opening of the liquid dispensing channel.

Abstract: A stationary pagewidth inkjet printhead has one or more nozzle rows extending along a longitudinal axis of the printhead. Each nozzle is configurable to fire a droplet of ink at a plurality of predetermined different dot positions along the longitudinal axis, and each nozzle has an associated primary dot position. The printhead is configured to compensate for a dead nozzle by printing from a selected functioning nozzle positioned in a same nozzle row as the dead nozzle. The selected functioning nozzle is configured to fire some ink droplets at the primary dot position associated with the dead nozzle and to fire some ink droplets at its own primary dot position.

Abstract: An inkjet printhead (100) and a method (200) of supplying viscous ink employ a central ink feed channel (130). The inkjet printhead (100) includes a bridge beam (110) that supports an ejector element (106), a pair of lateral ink feed channels (120) adjacent to the bridge beam (110), and a central ink feed channel (130) through the ejector element (106) and bridge beam (110). The pair of lateral ink feed channels (120) and the central ink feed channel (130) connect between an ink reservoir (140) below the bridge beam (110) and the bubble expansion chamber (104). The method (200) includes providing (210) a central ink feed channel in a bridge beam of a printhead and flowing (220) viscous ink from an ink reservoir through a combination of the provided central ink feed channel and a pair of lateral ink feed channels.

Abstract: An insulation container has an insulation material, a filter arranged to encase the insulation material, the filter of a material that prevents escape of the insulation material while allowing air to pass through, and a container arranged to encase the filter, the container being heat sealable. A printer has an ink supply, a print head arranged to receive ink from the ink supply and configured to receive electrical signals from a controller and to dispense ink in accordance with the electrical signals onto a print substrate, and an insulator to absorb heat from the print head.

Abstract: A liquid discharge head includes a plurality of nozzle arrays. A concave portion is formed on a back side of a head substrate, and all supply ports are formed in the bottom of the concave portion. The head substrate and a supporting member are bonded at the bottom of the concave portion so that the supply port and an introduction port communicate with each other. According to such a configuration, a ground contact area can be sufficiently secured, so that a liquid discharge head that is highly reliable and having high heat dissipation ability, and that can be manufactured with high productivity can be achieved.

Abstract: Disclosed is a printhead having at least one ink drop generator region, which includes an ink chamber, an orifice through which ink drops are ejected, and a heating element positioned below the ink chamber. The heating element includes a resistor defined therein and a nano-structured surface that is exposed to the ink fluid supplied to the ink chamber. The nano-structured surface takes the form of an array of nano-pillars. The printhead is fabricated by a method that includes: forming a heating element having an oxidizable metal layer as the uppermost layer; forming an aluminum-containing layer on the oxidizable metal layer; anodizing the aluminum-containing layer to form porous alumina; anodizing the oxidizable metal layer so as to partially fill the pores in the porous alumina with metal oxide material; and removing the porous alumina by selective etching to produce a nano-structured surface.

Abstract: A method of printing at a dot density exceeding a nozzle density in a stationary pagewidth printhead. The method includes the steps of: (i) advancing a print medium transversely past the stationary printhead at a rate of one line per one line-time; and (ii) firing droplets of ink from predetermined nozzles in a nozzle row to create successive lines of print. Some or all of the predetermined nozzles fire droplets of ink at a plurality of predetermined different dot positions along a longitudinal axis of the printhead during one line-time, such that the printed dot density in each line of print exceeds the nozzle density.

Abstract: In an embodiment, a fluid ejection device includes a die including a fluid feed slot that extends from a back side to a front side of the die, a firing chamber formed on the front side to receive fluid from the feed slot, a fluid distribution manifold adhered to the back side to provide fluid to the feed slot, and a corrosion-resistant layer coating the back side of the die so as not to extend into the feed slot.

Abstract: In an embodiment, a fluid ejection device includes a die including a fluid feed slot that extends from a back side to a front side of the die, a firing chamber formed on the front side to receive fluid from the feed slot, a fluid distribution manifold adhered to the back side to provide fluid to the feed slot, and a corrosion-resistant layer coating the back side of the die so as not to extend into the feed slot.

Abstract: There is provided a liquid ejecting head including pressure generation chambers that communicate with nozzle openings from which liquid droplets are discharged, liquid flow paths that communicate with the pressure generation chambers, and pressure generation units that generate pressure for discharging liquid droplets in the pressure generation chambers. In the liquid ejecting head, foam members formed with closed cells are provided in the liquid flow paths.

Abstract: A method of ejecting ink from a thermal inkjet printhead. The method includes the steps of: (i) supplying an ink to at least one nozzle chamber of the printhead; and (ii) actuating a heater element in the nozzle chamber and heating the ink to a temperature sufficient to form a bubble therein, thereby causing the ink to be ejected from a nozzle opening associated with the nozzle chamber. The ink is a solvent-based ink composition including: (a) 20-80 wt. % of a compound of formula (A); wherein: R1 is C1-6 alkyl; and each of R2, R3 and R4 is independently selected from H, C1-6 alkyl, halogen, OH, and C1-6 alkoxy; (b) 10-70 wt. % of a C1-6 alcohol; and (c) 0.01-25 wt. % of a colorant.

Abstract: When an insulating layer is provided in order to protect an energy generating element, there arises a possibility that the layer dissolves in a contacting liquid. Therefore, in order to eject liquid, a first protection layer containing metal is provided on the insulating layer facing a substrate for a liquid-ejection head and a second protection layer containing metal is provided on the surface of a liquid supply port to which a base containing silicon is exposed.

Abstract: The invention provides an ink that inhibits lowering of ejection stability caused by a precipitate derived from a self-dispersible type monoazo pigment and also inhibits deterioration of a liquid contact surface of a heater portion of a recording head. The ink is an ink for ink jet recording system employing an thermal energy, containing a monoazo pigment, a resin and a surfactant represented by the following formula (1). A proportion of a molecular weight of an ethylene oxide group moiety occupying the surfactant is 10% or more and 85% or less, the monoazo pigment is a self-dispersible pigment to the particle surface of which at least one hydrophilic group selected from the group consisting of —COOM, —SO3M, —PO3HM and —PO3M2 is bonded directly or through another atomic group, and the acid value of the resin is 240 mg KOH/g or less.

Abstract: Various embodiments provide a device having a multi-scale superoleophobic surface and methods for forming and using the device, wherein a particulate composite layer including metal-containing particulates is formed on a textured micron-/sub-micron surface of a semiconductor layer to provide device with multi-scale rough surface.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: Provided is an inkjet printhead integrated circuit that has a wafer substrate that has an ink passage, and a nozzle plate supported on the substrate by side walls to define an ink chamber supplied with ink via the ink passage. The nozzle plate has an ink ejection port corresponding to the ink chamber. A heater element is bonded to the nozzle plate inside the chamber for vaporising ink to generate a vapor bubble that ejects ink through the ejection port. The heater element is bonded to the nozzle plate with a low thermal product layer. The thermal product thermal product is less than 1495 Jm?2K?1s?1/2, the thermal product being (?Ck)1/2, where ? is the density of the layer, C is specific heat of the layer and k is thermal conductivity of the layer.

Abstract: Provided is an inkjet printhead having an array of ink chambers formed on a planar support surface of a wafer substrate. Each ink chamber in the array has a nozzle, a thermal actuator for ejecting ink through the nozzle and a droplet stem anchor. The thermal actuator has two sections with higher resistance than the remainder of the thermal actuator. The droplet stem anchor is positioned between the two sections with higher resistance of the thermal actuator.

Abstract: A thermal inkjet printhead integrated circuit has an array of ink chambers formed on a wafer substrate, each having a nozzle aperture and a thermal actuator. The thermal actuator has a heater element extending between two contacts. The printhead IC also has CMOS (complementary metal-oxide semiconductor) drive circuitry formed by a plurality of flat, metal layers interleaved with interlayer dielectric for selectively providing the thermal actuators of the array with drive signals. The CMOS drive circuitry has a top-most metal layer providing electrodes for each of the thermal actuators respectively. The electrodes each have a flat surface that the contacts of each of the thermal actuators overlie for face to face contacting engagement. The contacts and the heater element are coplanar such that the thermal actuator is an integral planar structure.

Abstract: A printing nozzle arrangement is provided having an electrical current source, a fluid chamber having a fluid inlet and fluid ejection port, a heating element within the chamber electrically connected to the electrical current source, and a microprocessor. The heating element is configured such that electrical current applied by the electrical current source at a predetermined energy level causes resistive heating and ejection of the fluid from the fluid ejection port. The microprocessor is configured to test for faulty operation of the heating element by causing application of electrical current for a predetermined duration which does not result in fluid ejection. When faulty operation is determined, the microprocessor is configured to cause application of electrical current at an energy level significantly greater than the predetermined energy level in an attempt to clear fluid blockages associated with the chamber.

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 liquid dispenser includes an array of liquid dispensing elements positioned on a substrate. Each liquid dispensing element includes a liquid dispensing channel positioned on the substrate. The liquid dispensing channel includes an outlet opening positioned on a wall opposite the substrate. A diverter member is associated with the liquid dispensing channel. A liquid return channel is positioned on the substrate in fluid communication with the liquid dispensing channel. A liquid supply channel is positioned on the substrate in fluid communication with the liquid dispensing channel. A liquid supply passage extends through the substrate in fluid communication with the liquid supply channel. A liquid return passage extends through the substrate in fluid communication with the liquid return channel. A liquid supply provides liquid that flows from each liquid supply channel through each liquid dispensing element to each liquid return channel.

Abstract: A liquid dispenser is provided that includes a liquid supply channel, a liquid dispensing channel, and a liquid return channel. The liquid dispensing channel includes a wall. The wall includes a surface. A portion of the wall defines an outlet opening. Another portion of the wall defines a drain located in the wall downstream from the outlet opening. The drain includes a radius of curvature as viewed from a direction perpendicular to the wall. A liquid is provided that flows from the liquid supply channel through the liquid dispensing channel to the liquid return channel. A liquid drop is caused to be ejected from the outlet opening of the liquid dispensing channel by selectively actuating a diverter member to divert a portion of the flowing liquid through the outlet opening of the liquid dispensing channel.

Abstract: Provided is an ink jet ink including a monoazo pigment and a resin, the ink being used for an ink jet recording system in which the ink is ejected from a recording head by an action of thermal energy. The monoazo pigment is a self-dispersible pigment having an anionic group bonded to a particle surface of the pigment directly or via another atomic group and has a surface charge amount of 5.9×10?2 mmol/g or more and 9.8×10?2 mmol/g or less. The resin has an acid value of 100 mg KOH/g or more and 160 mg KOH/g or less. The mass ratio of the content (mass %) of the resin to the content (mass %) of the monoazo pigment in the ink is 0.05 times or more and 0.25 times or less.

Abstract: An inkjet printhead comprising a substrate having an ink feed slot formed in the substrate and having a first longitudinal edge and a second longitudinal edge opposite to the first longitudinal edge, the first longitudinal edge extending along a first longitudinal axis (X); a first row of vaporization chambers arranged along the first longitudinal edge and a second row of vaporization chambers arranged along the second longitudinal edge, in which each chamber comprises an ink droplet generating portion and a connection portion, the connection portion including at least one duct in fluid connection with the ink feed slot, wherein the connection portions of the chambers of the first row overlap along the first longitudinal axis (X) with the connection portions of the chambers of the second row.

Abstract: In a liquid-discharging-head substrate including a plurality of ink supply ports, if lines are provided on the substrate between adjacent elements, energy generating elements cannot be arranged in high density. A liquid-discharging-head substrate according to the present invention includes an element array in which a plurality of elements configured to generate energy for discharging liquid are arranged, a first common line, a second common line, first individual lines configured to connect the elements and the first common line, and second individual lines configured to connect the elements and the second common line. The element array is provided between the first common line and the second common line, the first individual lines are provided in an area between the element array and the first common line, and the second individual lines are provided in an area between the element array and the second common line.

Abstract: Among other things, ink is jetted onto a substrate, the ink includes (a) a pigment and (b) a wax, and the jetted ink on the substrate is heated to fire the pigment on the substrate.

Abstract: Second etching is performed to the bottom through dry etching of a substrate to suppress image degradation even if an opening position of an ejection opening at a substrate end deviates. Provided is an inkjet printing head substrate including: a first surface, a second surface, and a plurality of ink supply openings, wherein the plurality of the heat resistive elements and the plurality of the ink supply openings are arranged in such a manner that each of distances between a heat resistive element closer to an inclined surface of the recessed portion in the inkjet printing head substrate among the plurality of the heat resistive elements and two ink supply openings adjacent to the heat resistive element is longer than each of distances between a heat resistive element closer to the center of the inkjet printing head substrate and two ink supply openings adjacent to the heat resistive element.

Abstract: A liquid ejection head, a liquid supply apparatus, a liquid ejection apparatus, and a liquid supply method can enable the channel resistance and pressure loss of liquid in the liquid ejection head to be reduced to increase the speed at which liquid is supplied to the nozzles. To achieve this, an ink supply chamber is placed so as to be laminated on a main ink supply chamber. A filter interposed between the main ink supply chamber and the ink supply chamber extends along a surface substantially parallel to a nozzle arrangement plane on which a plurality of nozzles are arranged.

Abstract: A method for forming drops includes providing a jetting module that includes a nozzle plate, portions of the nozzle plate defining a nozzle; a thermal stimulation membrane including a plurality of pores and one or more heating elements; and an enclosure extending from the nozzle towards the thermal stimulation membrane, the enclosure defining a liquid chamber positioned between the nozzle and the thermal stimulation membrane, the liquid chamber being in fluid communication with each of the nozzle and the plurality of pores; providing liquid under pressure sufficient to cause the liquid to divide into a plurality of portions as the liquid flows through the thermal stimulation membrane; each portion of the liquid flowing through a pore of the plurality of pores; jetting an individual stream of the liquid through the nozzle; and causing a liquid drop to break off from the individual stream of the liquid by applying a pulse of thermal energy to each portion of the liquid as each portion of the liquid flows throug

Abstract: There is disclosed a manufacturing method of a liquid discharge head including a substrate in which a first energy generating element and a second energy generating element that generate energy used for discharging liquid are provided, a discharge port member in which a first discharge port discharging the liquid is provided corresponding to the first energy generating element and a second discharge port discharging the liquid is provided corresponding to the second energy generating element, and a flow path wall member having a portion of the liquid flow path wall that communicates with the first discharge port and the second discharge port, in which a distance between the second energy generating element and the second discharge port is larger than that between the first energy generating element and the first discharge port.

Abstract: An aqueous inkjet printing fluid composition for use in an inkjet printer comprising a silicon-based material which contacts the aqueous printing fluid composition, comprising in a concentration sufficient to inhibit corrosion of the silicon-based material when contacted by the aqueous printing fluid composition a soluble metal ligand complex of Formula (I): wherein M represents a divalent or a trivalent metal; Z represents OH or CO2H; n represents an integer from 1-4; each Y may independently be chosen from the group consisting of halogen, cyano, carboalkoxy, alkyl, alkoxy, aryl, hetaryl, carboxy, hydroxy, sulfo and phospho, or any two of Y on adjacent carbons may be combined together to form a 5-7 atom carbo- or heterocyclic ring; and the number of ligands y is 2 or 3; with the proviso that at least one Y comprises a solubilizing group capable of imparting water solubility to the complex. The useful lifetime of microelectromechanical fluidic devices based on silicon fabrication is extended.

Abstract: A MEMS (Micro Electro Mechanical System) device and a method of manufacturing the same, in which an detection indicator is formed on a chamber layer stacked on a substrate such that a user easily inspects whether the chamber layer has a required thickness. The MEMS device can include two detection indicators that are formed on the chamber layer and have different depth from each other, or an detection indicator which is formed on the chamber layer and has a tapered sectional shape in which an upper surface of the detection indicator is gradually narrowed in a downward direction such that a user can easily inspect whether the chamber layer has a required thickness. The user can precisely determine whether the chamber layer is planarized to a required thickness by planarizing the detection indicator formed on the chamber layer, and inspecting the detection indicator by using an optical microscope, thereby facilitating inspection for a thickness of the chamber layer.

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: An ink jet printing ink for use in an ink jet printing method. The ink is ejected from a print head by the action of thermal energy and includes water, a self-dispersing pigment, and at least two types of resin particles. One of the at least two types of resin particles (resin particle A) and another of the at least two types of resin particles (resin particle B) have an average particle size of 80 nm or more but 220 nm or less and an acid value of 25 mgKOH/g or more but 150 mgKOH/g or less. The resin particle A has a glass transition temperature of 25 degrees Celsius or less. The resin particle B has a glass transition temperature of 25 degrees Celsius or more. A difference in glass transition temperature between the resin particle A and the resin particle B is 10 degrees Celsius or more.

Abstract: A jetting module includes a nozzle plate, a thermal stimulation membrane, and an enclosure. Portions of the nozzle plate define a nozzle. The thermal stimulation membrane includes a plurality of pores. At least one of the plurality of pores overlaps the nozzle when viewed from a direction through the nozzle. The enclosure includes a wall that extends from the nozzle plate to the thermal stimulation membrane to define a liquid chamber positioned between the nozzle plate and the thermal stimulation membrane. The liquid chamber is in fluid communication with the nozzle. The liquid chamber is in fluid communication with the plurality of pores of the thermal stimulation membrane.

Abstract: An ink for ink jet recording, the ink being used in an ink jet recording method that includes ejecting an ink from a recording head by the action of thermal energy, includes water, a self-dispersing pigment, and polymer particles, in which the polymer particles have a glass transition temperature of 25 degrees (Celsius) or lower, an average particle size of 80 nm to 220 nm, and an acid value of 25 mgKOH/g to 150 mgKOH/g.

Abstract: Disclosed is a nonaqueous ink jet ink that is suitable for printing (scratch resistance and resistance to alcohol wiping) on recording media of plastics such as polyvinyl chloride, is highly safe, can be used without posing any problem of odor, has excellent properties of ink ejection from an ink jet head, and can realize a good printed image quality. Also disclosed are a process for producing a nonaqueous ink jet ink and an ink jet recording method using the nonaqueous ink jet ink. The process for producing a nonaqueous ink jet ink is a process for producing a nonaqueous ink jet ink containing at least an organic solvent, a pigment, and a fixing resin. The process is characterized in that the fixing resin satisfies a b/a value of not more than 0.

Abstract: The invention provides, between a discharge element substrate and a supply member, a support member containing a mixture that contains: a material having an affinity for a material forming the supply member; and another material.

Abstract: A support rod is mounted to maintain straightness of a support surface of a printer. The support rod is used to preload the support surface in a direction opposite of an expected transverse load upon the support surface. The preloading supplied by the support rod counteracts a bending force on the support surface resulting from the expected transverse loading.

Abstract: A solvent-based ink composition for a thermal inkjet printhead includes (a) 55-90 wt. % of an organic solvent including a ketone and a C1 to C4 alcohol; and (b) 0.01-10 wt. % of a colorant.

Abstract: The present teachings relate to methods and apparatus for depositing one or more materials (e.g., one or more films, such as one or more solids) on one or more substrates, which may form part of an OLED or other type(s) of display. In some embodiments, the disclosure relates to apparatus and methods for depositing ink on one or more substrates. The apparatus can include, for example, one or more chambers for receiving ink, and plural orifices configured in the one or more chambers which are adapted for ejecting droplets of the ink; a discharge nozzle comprising an array of micro-pores (e.g., configured in a rectangular array), with each micro-pore having an inlet port and an outlet port, and the discharge nozzle receiving plural quantities (e.g., droplets) of ink from the chamber(s) via the orifices at the inlet ports and dispensing the ink from the outlet ports. The droplets of ink can be received at unique, spaced-apart locations on the inlet ports of the discharge nozzle.

Abstract: A die attach composition is used for bonding a silicon chip on a flat substrate. The die attach composition includes a cross-linkable epoxy resin having a rigid backbone, an epoxy siloxane resin, a fumed silica filler, an amine curing agent, and a silane coupling agent. The die attach composition is particularly useful in bonding silicon heater chips on flat ceramic substrate in forming an inkjet printhead assembly. The die attach composition allows accurate placement of silicon heater chips on flat ceramic substrate and exhibits good ink resistance.