Abstract: A nozzle cell of a printhead is provided which has a multi-layer substrate defining a fluid inlet, side walls extending from the substrate around the fluid inlet and comprising walls of silicon nitride encapsulating hardened photoresist, an apertured roof supported by the side walls to define a chamber, and a heater within the chamber, the heater heating the fluid in the chamber so that bubbles are generated therein to cause ejection of the fluid from a nozzle defined with the apertured roof.

Abstract: A liquid ejection head according to the present invention includes a heat-generating resistor layer, a first electrode layer, an insulating layer extending over the heat-generating resistive layers and the first electrode layer, and a second electrode layer that has a first portion which extending through the insulating layer and which is electrically connected to the first electrode layer and also has a second portion which is not in contact with the insulating layer. The second portion has a space or a piece of resin disposed between the insulating layer and the second electrode layer.

Abstract: An inkjet printhead comprising: an array of ink chambers, each having a nozzle, an elongate actuator for ejecting ink through the nozzle; wherein, the nozzle has an elongate shape with its long dimension aligned with that of the elongate actuator.

Abstract: A liquid discharge head including an energy generating element configured to generate energy required for discharging a liquid, a substrate having the energy generating element formed thereon, and an orifice member provided on the substrate and including a plurality of discharge ports facilitating discharging the liquid and a plurality of flow paths communicating respectively with the plurality of discharge ports. The orifice member is constituted by a first resin forming a portion connected to at least the substrate and a second resin connected to the first resin and forming the plurality of discharge ports, and the first resin includes a silane material in a larger amount than the second resin.

Abstract: A nozzle device for an inkjet printhead includes a substrate assembly defining an ink supply; a chamber-defining layer defining a nozzle chamber in fluid communication with a nozzle opening and the ink supply; and an actuating arm coupled to the substrate assembly and terminating in a paddle separating the ink supply and nozzle chamber, the arm including a thermal bend portion proximal to the substrate assembly and configured to bend during actuation so that the paddle moves and causes ink within the nozzle chamber to be ejected out through the nozzle opening. A portion of the chamber-defining layer is supported by the thermal bend portion and the substrate assembly.

Abstract: A heat transfer type ink-jet print head and a method of fabricating the same. A method of fabricating an ink-jet print head includes sequentially laminating a heat generation layer and an electrode layer on a substrate, laminating a protective layer on the top surfaces of the electrode layer and the heat generation layer by sequentially laminating a first protective layer and a second protective layer on the top surfaces of the electrode layer and the heat generation layer, and laminating an ink chamber barrier and a nozzle plate on the top surface of the protective layer to form an ink chamber to prevent defects such as “pin-holes” from being generated during the formation of the first protective layer.

Abstract: Disclosed are an inkjet printhead and a method of fabricating the same. The inkjet printhead can include a substrate; a chamber layer formed on the substrate and a nozzle layer formed on the chamber layer. The chamber layer defines one or more ink chambers in which ink to be ejected may be accommodated. The nozzle layer includes one or more nozzles through which the ink from the ink chambers are ejected. The nozzle layer may be formed of a cured product of a photosensitive dry film that includes an light absorption material.

Abstract: A liquid ejection head includes a liquid-ejection head substrate including an element, which generates thermal energy used for ejecting a liquid from an ejection port, and a protective layer, which covers at least the element, and in which first layers and second layers are alternately stacked; a flow passage member which defines a wall of a flow passage communicating with the ejection port; and a flow-passage electrode disposed in the flow passage.

Abstract: A heating element of a printhead has a conductive layer deposited over a substrate, and a resistive layer deposited over and in electrical contact with the conductive layer.

Abstract: A printhead has a plurality of nozzle arrangements. Each arrangement includes a substrate defining an ink inlet aperture with a wall portion bounding the ink inlet aperture and a crown portion defining a nozzle opening; a skirt portion depending from the crown portion to form part of a peripheral wall of the nozzle assembly, the crown and skirt portions being displaceable with respect to the wall portion towards the substrate to alter a volume of a nozzle chamber defined by the wall, crown and skirt portions; and a thermal actuator interconnecting the crown and skirt portions with the substrate, the actuator for displacing the crown and skirt portions. The wall portion and skirt portions are configured to define a fluidic seal to inhibit the egress of ink during such displacement. The substrate further includes a layer of micro-electromechanical drive circuitry for actuating the actuator.

Abstract: An inkjet printhead with an array of nozzles and corresponding actuators for ejecting ink through the nozzles, the nozzles being arranged in rows such that the nozzle centres are collinear; wherein, the nozzle pitch along each row is greater than 1000 nozzles per inch. By configuring the components of the unit cell (the repeating chamber, nozzle and actuator unit) such that the overall width of the unit is reduced, the same number of nozzles can be arranged into a single row instead of two staggered and opposing rows without sacrificing any print resolution (d.p.i.). One row of drive circuitry simplifies the CMOS. fabrication and connection to a print engine controller for receiving print data. Alternatively, the unit cell configuration used in the present invention can be arranged into opposing rows that are staggered with respect to each other to effectively double the print resolution—in the case of the preferred embodiment, to 3200 d.p.i.

Abstract: A heater stack includes first strata configured to support and form a fluid heater element responsive to repetitive electrical activation and deactivation to produce repetitive cycles of fluid ejection from an ejection chamber above the heater element and second strata overlying the first strata and contiguous with the ejection chamber to protect the heater element. The first strata includes a substrate with a cavity formed either in or above the substrate, a heater substrata overlying the cavity and substrate, and a decomposed layer of material between the substrate and heater substrata and processed to provide the cavity substantially empty of the layer of material such that the cavity provides a means which, during repetitive electrical activation, enables the heater element to transfer heat energy into the fluid in the ejection chamber for producing ejection of fluid therefrom substantially without transferring heat energy into the substrate.

Abstract: An inkjet nozzle assembly includes a nozzle chamber having a floor and a roof, wherein moving portion of the roof is moveable towards the floor for ejection of ink. A thermal bend actuator defines part of the moving portion of the roof, and an active beam of the actuator defines an upper layer of the moving portion.

Abstract: Provided is a nozzle arrangement for an inkjet printhead. The arrangement includes a substrate defining an ink inlet channel and ink chamber with a CMOS layer deposited on top of the substrate, and a nozzle wall, roof and rim positioned on top of the substrate via which ink is operatively ejected from the chamber. The arrangement also includes an anchor atop the CMOS layer, said anchor linked to a stiffening beam by means of an actuator beam, the stiffening beam suspended from the CMOS layer by means of a passive beam and a carrier. Further included is a diffusion barrier about the ink chamber to inhibit the diffusion of hydroxyl ions through the CMOS layer.

Abstract: A nozzle assembly for an inkjet printhead includes a substrate defining a nozzle chamber and an ink inlet channel in fluid communication with said chamber; a nozzle defined on the substrate and located over the nozzle chamber, said nozzle having a crown portion with a skirt portion depending from the crown portion, the skirt portion forming a first part of a peripheral wall portion of the nozzle chamber, the nozzle surrounded by a raised rim for supporting a meniscus of a body of ink in the nozzle chamber; and an actuator with a connecting arm fast with the nozzle to operatively displace the nozzle towards the substrate. The nozzle is substantially hexagonally shaped.

Abstract: A liquid discharge head includes a substrate, on which are formed energy generating members for generating energy to be used for the discharge of a liquid through a discharge port, and a precious metal protective layer for protecting the energy generating members, an inorganic adhesive layer formed of at least one material selected from titanium, titanium nitride, tantalum nitride and chromium nitride, the inorganic adhesive layer being closely adhered to the precious metal protective layer, an organic adhesive layer made of an organic material, and a flow path formation member, serving as a wall of a flow path communicating with the discharge port. The substrate, the inorganic adhesive layer, the adhesive layer and the flow path formation member are bonded to the substrate in this order.

Abstract: An epoxy resin composition, including: an epoxy resin (A) represented by Formula (1); an epoxy resin (B) having an epoxy equivalent of 220 or less and having twice or more epoxy groups in a molecule than epoxy groups of the epoxy resin (A); and a photocationic polymerization initiator (C), in which: the epoxy resins (A) and (B) constitute main components; and a weight of the epoxy resin (A) is 40% or more and a weight of the epoxy resin (B) is 30% or more with respect to a total weight of the epoxy resins (A) and (B): where: R represents a hydrogen atom, a methyl group, an ethyl group, a propyl group, or a t-butyl group; represents an integer of 0 or more and 4 or less; and m represents an integer of 1 or more and 3 or less.

Abstract: A nozzle structure for an inkjet printer printhead includes an ink ejection port; a nozzle chamber in fluid communication with the ink ejection port and an ink supply channel of the inkjet printer printhead; and a cantilevered thermal actuator terminating in a free end over the ink supply channel. The thermal actuator includes a serpentine heater layer connected to a CMOS drive circuitry layer of the printhead. The thermal actuator is adapted to reciprocate towards and away from the ink ejection port in response to signals from the drive circuitry layer.

Abstract: An inkjet printhead comprises a plurality of nozzles; a supply of printing fluid in fluid communication with the plurality of nozzles; and a plurality of heater elements corresponding respectively to each of the nozzles, the heater elements for heating the printing fluid to form a gas bubble for ejecting a drop of printing fluid of a predetermined volume from the nozzle. Each of the heater elements has an area proportional to the predetermined volume. The area being such that an amount of energy generated by each heater element to form the gas bubble is substantially equal to or less than an amount of energy absorbable by a drop of printing fluid having the predetermined volume.

Abstract: A nozzle arrangement for an inkjet printer comprises a nozzle chamber; an ink supply channel for supplying ink to the nozzle chamber; a cover for covering the nozzle chamber, the cover defining an ink ejection port through which ink is ejected; a plurality of thermal bend actuators radially arranged around the ink ejection port; and a plurality of heater elements each corresponding to one of the plurality of thermal bend actuators. Each heater element is provided at an end of a corresponding thermal bend actuator opposite the ink ejection port.

Abstract: A composite ceramic substrate for receiving an ejection head chip for a micro-fluid ejection head and a method for making the composite ceramic substrate. The substrate includes a high temperature previously fired ceramic base having a substantially planarized first surface and at least one fluid supply slot therethrough. A low temperature co-fired ceramic (LTCC) tape layer bundle having at least two LTCC tape layers is attached to the ceramic base at an interface between the LTCC tape layer bundle and the first surface of the ceramic base. The LTTC tape layer bundle has at least one chip pocket therein and at least one of the LTCC tape layers includes a plurality of conductors.

Abstract: An ink jet head circuit board is provided which has heaters to generate thermal energy for ejecting ink as they are energized. This circuit board is so constructed as to reduce wire resistances for the heaters while at the same time preventing an increase in the size of the board and realizing a high-density integration of the heaters required for high resolution printing. This construction is made possible by forming electrode wires of first and second electrode wire layers to reduce an area that the wire patterns for the heater occupy on the circuit board. In reducing the effective thickness of protective insulation layer formed on the heater to prevent a possible degradation of thermal efficiency, one of the protective insulation layers over the electrode wires is removed from the heater, depending on the thickness of the electrode wires.

Abstract: A method of manufacturing a liquid-discharge-head substrate is provided, which includes a plurality of elements for discharging liquid, and a heating member for heating the liquid-discharge-head substrate, the method including the steps of preparing a substrate having an insulating layer made of an insulating material provided on or above the substrate, providing a conductive layer made of a conductive material, and forming a conductive line being configured to supply current for driving the element and a part of a heating member by using the conductive layer.

Abstract: A present invention provides a print head improving an ink refill speed to reduce the time from the end of ejection of ink droplets until the beginning of next ejection of ink droplets and maintaining the high quality of images obtained by printing. An ink jet print head has an ejection port portion 10 including a first ejection port portion 16 communicating with atmosphere, and a second ejection port portion 17 having a cross section which extends in a direction orthogonal to an ejecting direction and which is larger than that of the first ejection port portion 16; the second ejection port portion 17 is formed between a bubbling chamber 9 and the first ejection port portion 16. In the ink jet print head, the ejection port portion first axis 12 is located away from the ejection port portion second axis 14.

Abstract: A nozzle assembly is provided for an inkjet printhead. The nozzle assembly includes a substrate assembly defining an ink inlet. A nozzle extends from the substrate assembly in register with the ink inlet and defines an opening through which ink can be ejected. A lever arm extends from the nozzle. A thermal bend actuator assembly is mounted to the substrate assembly and engages with the lever arm so that, upon actuation, the lever arm moves and ink within the nozzle is ejected out through the opening.

Abstract: An inkjet printhead is disclosed. The printhead includes a substrate defining a plurality of ink inlet passages; a plurality of nozzle chambers formed on the substrate, each nozzle chamber being in fluid communication with at least one of the ink inlet passages, and at least one heater element suspended in each nozzle chamber, each heater element, when energized by an electrical signal, forms a gas bubble in ink in the nozzle chamber so that a drop of ink is ejected from the nozzle chamber.

Abstract: A liquid discharge recording head which discharges a liquid includes a substrate on which liquid-discharge-energy-generating elements are provided and which constitutes a part of a flow path for supplying the liquid; and a covering resin layer which is provided on the substrate, which constitutes a part of the flow path, and which includes orifices for discharging the liquid, wherein the covering resin layer is composed of an oxetane resin composition containing an oxetane compound having at least one oxetanyl group in its molecule and a photocationic polymerization initiator as essential components.

Abstract: An inkjet printhead comprising a substrate and a plurality of nozzle assemblies disposed on the substrate. Each nozzle assembly includes a nozzle chamber for containing ink and an actuator for ejecting an ink droplet from a nozzle aperture when a resistive element of the actuator is heated by an electrical current. The resistive element of the actuator is spaced apart from the substrate and suspended in ink contained in the nozzle chamber.

Abstract: An inkjet printhead includes a supporting wafer substrate; an array of drop ejection apparatuses formed in a first side of the supporting wafer substrate, the array of drop ejection apparatuses configured as pairs of rows of drop ejection apparatuses, each drop ejection apparatus including a chamber with a nozzle, and an actuator extending into the nozzle; and a common ink channel extending between each pair of rows of drop ejection apparatuses. Each chamber has a sidewall adjacent to the common ink channel, the side wall provided with a grill portion for facilitating an in-flow of ink from the common ink channel into the chamber, the grill portion adapted to further filter the ink flowing therethrough.

Abstract: The invention provides for an ink ejection nozzle for a printhead integrated circuit. The nozzle includes a fluid chamber and a paddle. The fluid chamber has a fluid outlet port and a fluid inlet port respectively defined in opposite walls of the chamber, the chamber having chamber wall edge portions for locating a paddle therebetween. The paddle is located in the chamber between the edge portions, the paddle operatively displaceable to eject ink from the fluid outlet port. The paddle is formed with a series of protrusions in a central portion of the paddle, the protrusions aiding in reducing outward ink flow from the centre of the paddle as the paddle moves towards the outlet port to eject ink via the outlet port.

Abstract: A liquid discharge recording head includes a substrate having a liquid supply opening facilitating supplying liquid and heating resistors for generating energy for discharging the liquid, a flow path member having discharge openings and flow paths including first and second flow paths that are adjacent each other, the second flow path being longer than the first flow path, and a first resister corresponding to the first flow path and a second resistor corresponding to the second flow path, each of the first and second resistors being disposed at an area of the flow path member which is situated in correspondence with the liquid supply opening, wherein an amount of protrusion of the first resister at a side of the first flow path is greater than an amount of protrusion of the second resister at a side of the second flow path.

Abstract: An ink jet head circuit board is provided which has heaters to generate thermal energy for ink ejection as they are energized. This circuit board reduces areas of the heaters to achieve higher printing resolution and image quality. This board also prevents a degradation of thermal energy efficiency and reduces power consumption. The protective insulation layer for the electrode wire layer is formed of two layers and one of the two layers is removed from above the heater to improve the heat energy efficiency. The resistor layer is deposited over the electrode wire layer. The patterning for removing the protective insulation layer is done in a wider range than a gap of the electrode wire layer, the gap being used to form the heater. Further, by forming the electrode wires in two layers, a possible reduction in an effective bubble generation area of the heater can be prevented.

Abstract: On the liquid ejection head substrate, an upper protective layer, as well as coming into contact with the resin layer which configures a path forming member such as a ejection opening, comes into contact with ink in an heat generating portion inside the channel formed. The upper protective layer contains iridium and silicon. The upper protective layer is configured so that, at a surface in contact with the ink and resin layer, Ir100-xSix attains a 15 at. %?X?30 at. % silicon content rate, and that X more becomes zero as a position in the upper protective layer more approaches an adhesion layer. As a result, at the interface where the upper protective layer comes into contact with the path forming member, by the silicon attaining the heretofore described content rate, it is possible to improve the adhesion with the path forming member made of resin compared with a case of using iridium alone.

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: It is an objective of the present invention to provide an ink jet printing head substrate by which a high adhesion can be obtained between an electrode layer and a nozzle formation member and the corrosion or electrolysis for example of a electrode due to the contact between the electrode and ink can be reduced. To realize this, the present invention includes: an electrode layer for supplying power to a heat-generating portion that is provided on a substrate and that generates thermal energy for ejecting ink; and a resin layer provided on the electrode layer via a nickel-containing layer. The electrode layer includes precious metal as a main component. The nickel-containing layer consists of gold-nickel alloy containing nickel.

Abstract: Provided is a method of manufacturing a liquid ejection head having an element which generates energy utilized for ejecting liquid and an electrode layer electrically connected the element. The method includes the steps of: providing an electrode layer on a substrate, a width of one portion of the electrode layer being smaller than that of another portion near the one portion; providing a resist layer on a part of the electrode layer by any one of a screen printing method and a dispense method in such a manner that an end of the resist layer is positioned at the one portion; providing another layer on another part excluding the part of the electrode layer by utilizing the resist layer as a mask; and removing the resist layer.

Abstract: To provide a print head that simplifies the manufacture process of a print head and reduces the manufacturing cost while preventing the peeling-off between a substrate and a flow passage forming member in the print head, and a method of manufacturing the print head. In the print head of the present invention, a protective layer is formed in a flow passage forming member side portion in a heat generating portion 2. The protective layer 20 contains a noble metal. Then, in the flow passage forming member side portion in the protective layer 20, the surface thereof is made of an oxide of a noble metal except in a portion corresponding to the heat generating portion 2, while in the portion corresponding to the heat generating portion 2 on the flow passage forming member side in the protective layer 20, the surface thereof is made of the noble metal.

Abstract: A substrate for an ink jet head is provided with a plurality of energy generating members generating energy used for discharging an ink, an electrode pad which is arranged near a side of the substrate, and is for electrically connecting to an outside of the substrate, a plurality of electrode wirings for electrically connecting the plurality of energy generating members and the electrode pad, and a plurality of resistance elements which are respectively provided at the plurality of electrode wirings. Resistance values of the plurality of resistance elements differ from one another according to resistance values of the electrode wirings provided with the respective resistance elements.

Abstract: A compact print head enabling high-quality, high-speed printing is provided. A liquid ejecting head includes: a substrate, having elements that generate energy used to eject liquid from ejection openings, and provided with a liquid supply port that communicates with a surface of the substrate having the elements and a opposite surface thereof; a member, provided above the surface of the substrate, and having walls of a liquid flow path that communicates with ejection openings and the supply port; an insulating layer, provided so as to cover the supply port, and provided with a plurality of through-holes; and a conducting layer electrically coupled to the elements, and provided within the insulating layer so as to be insulated with respect to the liquid.

Abstract: In order to dissipate to a high degree of efficiency the heat of a liquid discharge substrate of an ink jet recording head and effectively suppress increases in the substrate temperature, in an ink jet recording head in which a liquid discharge substrate is mounted on a supporting member through a foil-shaped heat dissipation member, the area of the heat dissipation member is greater than the projected area of the liquid discharge substrate with respect to the supporting member.

Abstract: A liquid discharge head includes a substrate having an energy generating element configured to generate energy required to discharge liquid, a discharge port configured to discharge the liquid and provided in an opposed relationship to the energy generating element, a wall member defining a chamber adapted to store the energy required to discharge liquid the energy being generated by the energy generating element, a discharge portion defining a fluid path connecting the chamber and the discharge port, a supply path facilitating supplying the liquid into the chamber, and a pair of hollow portions provided in the wall member, wherein the hollow portions oppose each other and sandwich at least the entire discharge port in a direction from the discharge port to the substrate, and the hollow portions are independent of the chamber.

Abstract: An inkjet printhead includes a substrate defining a fluid chamber, the fluid chamber having a fluid outlet nozzle and a fluid supply channel respectively defined in opposite walls of the chamber; a thermal actuator extending from outside of the fluid chamber into the fluid chamber via an aperture in a sidewall of the fluid chamber; and a nozzle paddle terminating the thermal actuator and positioned within the fluid chamber, the nozzle paddle operatively displaceable upwards by the thermal actuator to eject ink from within the fluid chamber out through the fluid outlet nozzle. The fluid chamber is provided with a rim extending around an inner surface of the side wall, the rim partially protruding from the inner surface into the fluid chamber. The rim is provided with a rim edge angled upwards towards the fluid outlet nozzle.

Abstract: A method of manufacturing an inkjet printhead includes forming a heater and an electrode on a substrate, forming a flow path forming layer by coating a first negative photoresist composition on the substrate, forming a sacrifice layer, planarizing the flow path forming layer and the sacrifice layer, forming a nozzle layer by coating a second negative photoresist composition on the flow path forming layer, forming an ink feed hole in the substrate, and eliminating the sacrifice layer, wherein the first and second negative photoresist compositions include a prepolymer which comprises one selected from the group consisting of a glycidyl ether functional group, a ring-opened glycidyl ether functional group, and an oxytein functional group in a monomer repeat unit, and one selected from the group consisting of a phenol novolac resin-based backbone, a bisphenol-A-based backbone, a bisphenol-F-based backbone, and an alicyclic backbone; a cationic initiator; a solvent; and a plasticizer.

Abstract: A printhead integrated circuit comprises a substrate having drive circuitry and a plurality of nozzle assemblies positioned on the substrate. Each nozzle assembly has a moving portion moveable relative to a stationary portion for ejection of ink. The printhead integrated circuit is covered with a polymeric layer. The polymeric layer covers a gap defined between each moving portion and each stationary portion.

Abstract: An inkjet printhead and a manufacturing method thereof. In the manufacturing method, a chip and a porous material are provided. A heating layer is formed on the chip. A conductive layer is formed on the heating layer, and includes a notch therein to define a heating area. A chamber for storing liquid is formed on the heating area, and includes a first side and a second side. The first side faces the heating area, and the second side is connected to the first side. The chamber is formed with an exit, from which the liquid is dispensed, on the second side. The porous material is disposed on the chamber, and the liquid flows to the chamber through the porous material.

Abstract: An inkjet print head includes a substrate formed with a feed hole through which ink is transferred, and a notch prevention layer covering an area on the substrate where the feed hole is to be formed. Plasma electrons flown into the feed hole while the hole is formed on the substrate through dry etching can move through the notch prevention layer. As a result, corrosion of the substrate around the feed hole by the electrons can be prevented, thereby achieving a uniform width of the feed hole.

Abstract: The current invention provides for an inkjet printhead for an inkjet printer. The inkjet printhead includes a wafer substrate defining an ink supply channel. Side wall portions extend away from one surface of the wafer substrate, and a nozzle layer supported on the side wall portions and extending parallel to said one surface of the wafer substrate. The nozzle layer and the side wall portions define an array of nozzle chambers for receiving ink. The nozzle layer defines ink ejection ports and etchant holes. The etchant holes are of sufficient diameter to retain ink in the nozzle chamber by surface tension. Each nozzle chamber has a thermal actuators cantilevered on the wafer substrate. The actuator partitions the nozzle chamber and has a heater layer which produces thermal expansion of said actuator upon activation.

Abstract: An inkjet printhead and a method of manufacturing the same. In the inkjet printhead, a substrate includes an ink chamber formed in a top surface to contain ink to be ejected, an ink feedhole formed in a bottom surface to supply the ink to the ink chamber, and a restrictor formed between the ink chamber and the ink feedhole to connect the ink chamber and the ink feedhole. A plurality of passivation layers are formed on the substrate. A heater and a conductor to apply a current to the heater are formed between the passivation layers. A heat transfer layer is formed on the passivation layers in a predetermined shape. An epoxy nozzle layer is formed to cover the passivation layers and the heat transfer layer. The epoxy nozzle layer is formed with a nozzle that is connected to the ink chamber.

Abstract: A method of making a micro-fluid ejection head structure for a micro-fluid ejection device. The method includes applying a removable mandrel material to a semiconductor substrate wafer containing fluid ejection actuators on a device surface thereof. The mandrel material is shaped to provide fluid chamber and fluid channel locations on the substrate wafer. A micro machinable material is applied to the shaped mandrel and the device surface of the wafer to provide a nozzle plate and flow feature layer on the shaped mandrel and wafer. A plurality of nozzle holes are formed in the nozzle plate and flow feature layer. The shaped mandrel material is then removed from the device surface of the substrate wafer to provide fluid chambers and fluid channels in the nozzle plate and flow feature layer.

Abstract: A liquid discharge head includes a discharge element substrate including an energy generating element that generates energy for discharging liquid, a discharge port provided so as to correspond to the energy generating element, and a supply path for supplying the liquid to the discharge port. The discharge element substrate has an open face to which the discharge port is open, a back face of the open face, and side faces formed between the open face and the back face, and at least a part of the side faces is sealed by a sealing agent, which contains a filler made of fluororesin.