Abstract: The ejection head comprises: an ejection aperture which ejects onto a receiving medium a liquid in which charged dispersion particles are dispersed in a solvent; a pressure chamber which contains the liquid; an ejection channel which connects the ejection aperture with the pressure chamber; a pressurizing device which applies an ejection pressure to the liquid; and an electrode pair provided facing a vicinity of a meniscus of the liquid inside the ejection channel for generating an electric field inside the ejection channel, wherein at least a portion of the charged dispersion particles are caused to move to a vicinity of at least one of the electrodes in the electrode pair by means of the electric field generated inside the ejection channel, and the liquid from which the at least the portion of the charged dispersion particles have been removed is ejected from the ejection aperture by the pressurizing device.

Abstract: A liquid ejection head including at least one head chip including a plurality of heating elements on a surface of a substrate, a nozzle sheet having nozzles disposed on the respective heating elements, a barrier layer disposed between the head chip and the nozzle sheet, reservoirs disposed between the heating elements and the nozzle sheet, the reservoirs being defined by part of the barrier layer, a common flow path communicating with the reservoirs, and a liquid storage chamber disposed on at least one region of the surface of the substrate excluding a region on which the reservoirs are disposed, the liquid storage chamber being defined by part of the barrier layer and communicating with the common flow path and the reservoirs, the liquid storage chamber storing liquid such that part of the nozzle sheet is in contact with the liquid.

Abstract: The present invention can suppress penetration of dust and foreign particles into a nozzle of an ink jet recording head, and can manufacture and make functional a structure therefor in an economic manner and with high reliability. An ink discharge energy generating element which generates energy for discharging ink is formed on the surface of an Si substrate. The Si substrate comprises an ink supply port which communicates ink from the rear face side of the substrate to the front face side of the substrate. The ink supply port comprises a filter structure having a plurality of minute through-holes formed on the Si substrate.

Abstract: An ink jet head having a channel damper, and a method of fabricating the same. The ink jet head includes a heat-generating resistor disposed on a substrate to generate pressure for ink ejection, a chamber layer disposed on the substrate to enclose the heat-generating resistor and having a first height from the substrate in order to provide at least one opened portion, and a channel damper disposed at the opened portion to completely enclose the heat-generating resistor together with the chamber layer and having a second height lower than the first height is disposed at the opened portion. A nozzle layer having a nozzle corresponding to the heat-generating resistor is disposed to be in contact with an upper surface of the chamber layer.

Abstract: A printhead for an inkjet printer, with an array of nozzles for selectively ejecting drops of ink towards a print medium, and a protective structure between said nozzles and said print medium. The structure is configured so as not to obstruct ink drops ejected from the nozzles. The printhead also has an air supply for supplying positive air pressure to the protective structure, the air supply having an air intake with a filter and shut off valve for stopping air supply to the structure when the printer is in a non-printing operational mode; and, an air distribution ducting having one or more air passages in communication with the protective structure. The shut off valve has an apertured member with a plurality of apertures corresponding to each of the air passages. The apertured member is movable between a valve open position in which the air apertures are in communication with the air passages and a valve closed position in which the air apertures are not in communication with said air passages.

Abstract: A method of etching a substrate and an article(s) formed using the method are provided. The method includes providing a substrate; coating a region of the substrate with a temporary material having properties that enable the temporary material to remain substantially intact during subsequent processing and enable the temporary material to be removed by a subsequent process that allows the substrate to remain substantially unaltered; removing a portion of the substrate to form a feature, at least some of the removed portion of the substrate overlapping at least a portion of the coated region of the substrate while allowing the temporary material substantially intact; and removing the temporary material while allowing the substrate to remain substantially unaltered.

Abstract: The ink jet recording apparatus serves to record an image corresponding to image data on a recording medium using an ink jet head which ejects ink in the form of an ink droplet. The ink jet head includes an ejection orifice substrate in which an ejection orifice is bored, a head substrate disposed at a predetermined distance from the ejection orifice substrate to define an ink passage between the ejection orifice substrate and the head substrate, ejection control device which controls the ejection of the ink from the ejection orifice. The ink guide dike is provided on a surface of the head substrate on a side of the ink passage to form an ink flow directed from an upstream side of the ejection orifice in the ink passage to the ejection orifice.

Abstract: A printhead including a body; an actuator attached to the body, and an enclosed space between the actuator and the body forms a chamber; an opening defined by the body for releasing pressure in the chamber; and a seal attached to the opening to seal the chamber while permitting pressure to be released.

Abstract: A thermoelastic actuator to be arranged in an inkjet printer comprises an active heater layer and at least one passive thermal, conductor layer. A thermal insulator is located between the heater layer and said at least one thermal conductor layer. The at least one thermal conductor layer is also embedded in the thermal insulator.

Abstract: A printhead chip includes a substrate that incorporates drive circuitry and defines ink inlet channels. Nozzle chamber structures are positioned on the substrate. Each nozzle chamber structure defines a nozzle chamber in fluid communication with a respective ink inlet channel and an ink ejection port in fluid communication with the nozzle chamber. Ink ejecting mechanisms are pivotally displaceable with respect to the substrate to eject drops of ink from the ink ejection ports. Actuators are connected to the drive circuitry. Each actuator includes a force transmitting portion that is substantially linearly displaceable upon receipt of a signal from the drive circuitry and is connected to a respective ink ejecting mechanism to displace the ink ejecting mechanism pivotally with respect to the substrate.

Abstract: The liquid ejection device comprises: an ejection head including a plurality of nozzles which eject droplets of liquid onto an ejection receiving medium; a liquid flow speed determining device which determines a flow speed of the liquid in each of the nozzles, the liquid flow speed determining device being arranged in each of the nozzles; an ejection abnormality detecting device which detects an ejection abnormality in each of the nozzles according to the flow speed of the liquid determined by the liquid flow speed determining device; an ejection direction deflecting device which deflects a direction of ejection of a droplet of the liquid ejected from each of the nozzles, the ejection direction deflecting device being arranged in each of the nozzles; and an ejection compensation control device which performs control in such a manner that, when an abnormal one of the nozzles having an ejection abnormality is detected by the ejection abnormality detecting device, a compensatory ejection is performed by deflecti

Abstract: A fluid ejection device having storage and methods of forming and using such fluid ejection devices are described. In one embodiment, a substrate comprises multiple heater resistors supported thereby, and configured for ejecting fluid onto a medium. One storage structure is supported by the substrate and configured to store data.

Abstract: An ink jet printhead includes a substrate that defines a plurality of ink inlets. A drive circuitry layer is positioned on the substrate. A plurality of nozzle arrangements is arranged on the substrate. Each nozzle arrangement includes a nozzle chamber structure positioned on the substrate and defining a nozzle chamber in fluid communication with a respective ink inlet, and an ink ejection port in fluid communication with the nozzle chamber. An actuator is connected to the drive circuitry layer and is displaceable with respect to the substrate on receipt of an electrical signal from the drive circuitry layer. An ink ejection member is operatively positioned with respect to the nozzle chamber and is displaceable when the actuator is displaced such that ink is ejected from the ink ejection port. The ink ejection member is configured so that the ink ejection member obstructs a flow of ink from the nozzle chamber into the inlet at a certain position in a displacement path of the ink ejection member.

Abstract: An ink-jet head to jet ink from a front side thereof includes an actuator in which a plurality of parallel channels for generating pressure change to be applied to ink are formed and having a nozzle surface on which a plurality of nozzle holes are formed to jet ink from a corresponding ink channel, and a front plate located at the front side of the nozzle surface so as to protect the nozzle surface and having a recessed section on a front surface of the front plate, wherein the recessed section has an opening in which the nozzle surface of the actuator is inserted in such a way that the nozzle surface is located between the front surface of the front plate and the bottom surface of the recessed section.

Abstract: An inkjet printhead IC is fabricated using a wafer substrate that defines a plurality of ink inlet channels. A plurality of nozzle structures fabricated on the substrate to define nozzle chambers are in fluid communication with the ink inlet channels and an ink ejection nozzle in fluid communication with each nozzle chamber. Each nozzle structure has a chamber, an ejection nozzle in fluid communication with the chamber, and an ejection member for acting on ink within the chamber. A plurality of actuators attached to the substrate move each of the ejection members respectively, the movement being substantially parallel to the ink inlet flow direction; such that, ink is ejected through the ejection nozzle upon activation of the actuator corresponding to that nozzle structure.

Abstract: An ink jet nozzle arrangement for ejecting ink includes a substrate that defines an ink inlet. Integrated circuitry is positioned on the substrate. A nozzle chamber structure is positioned on the substrate and defines a nozzle chamber in fluid communication with the ink inlet and an ink ejection port in fluid communication with the nozzle chamber from which ink is ejected. A paddle is positioned in the nozzle chamber and arranged to move in the nozzle chamber to thereby eject ink from the nozzle. An elongate actuator is connected at one end to the substrate to receive actuating pulses from the integrated circuitry and to the paddle at the other end so that, on receipt of said actuating pulses, the actuator and thus the paddle is moved reciprocally to eject the ink from the ink ejection port. A movement sensor is arranged on the actuator and the substrate to determine one of a degree and a rate of movement of the actuator.

Abstract: A print head for a line printer in which errors between print head chips and another component are reduced and ink leakage is prevented, and in which heat generated in print head chips is efficiently dissipated without making the structure of the print head complex or increasing the size of the print head. A plurality of print head chips (11) are arranged along an ink path (20) and are disposed on both sides of the ink path in a zigzag pattern. Dummy chips (21) which do not eject ink are disposed at regions between the print head chips (11) arranged along the ink path (20). In addition, an ink-path member (23) is provided, at least a part of the ink-path member (23) which includes portions adhered to the print head chips (11) being composed of a material having a high thermal conductivity, so that the ink-path member (23) also serves as heat-dissipating means which dissipates heat generated in the print head chips (11).

Abstract: An ink jet printhead is provided comprising a substrate and a plurality of micro-electromechanical nozzle arrangements positioned on the substrate. Each nozzle comprises a nozzle chamber positioned on the substrate and an actuator arm. The nozzle chamber has a fixed portion fast with the substrate and a movable portion defining an ink ejection port which is displaceable relative to the fixed portion. The actuator arm is connected between the substrate and the movable portion and is operable in response to an electrical signal to tilt the movable portion towards the substrate to reduce a volume of the nozzle chamber and subsequently restore the movable portion to its original position to restore the nozzle chamber volume, thereby ejecting ink from the ink ejection port. The ink ejection port is shaped so that the tilting of the movable portion results in substantially normal ink drop ejection from the substrate.

Abstract: A pressure buffer of an ink-jet recording apparatus is placed in the vicinity of an ink-jet recording head in an ink supply path connecting an ink container to the ink-jet recording head. A body of the pressure buffer has a concave portion at least on one surface, and a flexible film is attached to tightly close the concave portion to form a chamber. The chamber has an ink flow outlet through which ink flows from the chamber to the ink-jet recording head and an ink flow inlet through which ink flows from the ink container to the chamber. The ink flow outlet is always positioned in an uppermost portion in a vertical direction of the chamber, and the ink flow inlet is positioned at an equal level or on a lower side in a vertical direction with respect to the ink flow outlet.

Abstract: A printer head using a radio frequency micro-electromechanical system (RF MEMS) sprayer includes an inner pressure chamber having a liquid inlet and a liquid outlet; a cavity resonator surrounding the inner pressure chamber, wherein the cavity resonator inputs a predetermined cavity resonance frequency signal to increase an inner pressure of the inner pressure chamber; a signal transmitting unit for generating the predetermined cavity resonance frequency signal and for inputting the generated cavity resonance frequency signal into the inner pressure chamber through the cavity resonator in response to an external input control signal; and a liquid chamber for supplying a liquid, wherein the liquid inlet and the liquid outlet each extend through the inner pressure chamber and the cavity resonator so that when an inner pressure of the inner pressure chamber is increased by the cavity resonator, a liquid from within the inner pressure chamber is ejected.

Abstract: Methods and systems for forming slotted substrates are described. In one exemplary embodiment, a substrate has a thickness defined by a first surface and a generally opposing second surface. The substrate has a fluid-feed slot extending between the first surface and the second surface with the fluid-feed slot being defined, at least in part, by a central portion and one or more capillary channels in fluid flowing relation to the central portion.

Abstract: A micro-electromechanical drive mechanism is provided, comprising at least two elongate drive members and associated coupling structures coupled to a working member. The drive members each incorporate an electrical circuit in electrical contact with drive circuitry provided on a substrate, for receiving an electrical signal therefrom, and have a fixed end anchored to the substrate and a free end displaceable relative to the substrate on receipt of the electrical signal from the drive circuitry. The coupling structures are each fast with the free end of an associated drive member so as to be displaceable therewith. The working member is fast with and interposed between the coupling structures so as to be displaceable therewith. The drive members and associated coupling structures are configured so that the displacement of the free ends of the drive members is translated into substantially rectilinear movement of the working member.

Abstract: A thermal inkjet actuator for use in an inkjet printer assembly includes heat conduction means arranged to realize a predetermined negative pressure profile to facilitate droplet formation. In a preferred embodiment the heat conduction means comprises a thin layer of very high thermally conductive material such as Aluminium located in the middle of a non-heat conductive passive bend layer. The overall cool-down speed of the actuator, and hence the speed with which the passive bend layer returns to its quiescent position can be controlled by controlling the proximity of the heat conductive layer to the actuator's heater during fabrication.

Abstract: The inkjet head ejects ink droplets through ejection nozzles with pressurizing elements and includes ink channels and ink circulation paths. Each ink channel is provided in a gap between a substrate and a nozzle plate and closed at one end and permitting ink to be supplied at another end and flow toward an ink pressurizing zone where the pressurizing element and the ejection nozzle of the nozzle plate are positioned on wall surfaces in the ink channel. Each ink circulation path is provided in the ink channel such that ink pressurizing energy which has been produced by pressurizing the ink with the pressurizing element and which is traveling from the ink pressurizing zone toward downstream of ink supply flow is allowed to propagate toward more upstream of the ink supply flow than the ink pressurizing zone, whereby the ink pressurizing energy is returned toward the ink pressurizing zone. The inkjet printer mounts the inkjet head.

Abstract: A liquid ejecting head includes a passage unit, having a nozzle opening, a pressure generating chamber communicating with the nozzle opening, and a reservoir holding a liquid to be supplying to the pressure generating chamber, a head case on which the passage unit is attached, a pressure generating element for applying variance of pressure to the pressure generating chambers, accommodated in a space defined in the head case, and a head substrate closing an opening of the space of the head case. An air sealing member is disposed between the head case and the head substrate.

Abstract: An inkjet printer including a printhead including an array of nozzles for ejecting ink onto media to be printed; and alignment formations configured for engagement with complementary formations on an apertured nozzle guard having an array of ink apertures corresponding to the array of nozzles; wherein; engagement between the alignment formations and the complementary formations holds the apertures in registration with the nozzles such that the guard does not obstruct the normal trajectory of ink ejected from the nozzles onto the media.

Abstract: The present invention provides a method, article of manufacture and system for fabricating an article using photo-activatable building material. The method includes the steps of applying a layer of the photo-activatable building material to a preselected surface, scanning the layer using a plurality of light-emitting centers to photo-activate the layer of photo-activatable building material in accordance with a predetermined photo-initiation process to obtain polymerization of the building material, wherein scanning is accomplished at a predetermined distance using a predetermined light intensity, and repeating the steps of applying the layer, with each layer being applied to an immediately previous layer, and scanning the layer with the plurality of light-emitting centers to polymerize the building material until the article is fabricated.

Abstract: A liquid discharging method for a liquid head discharge head, which is provided with a plurality of discharge ports for discharging liquid, a plurality of liquid flow paths communicated always with each of the discharge ports at one end, each having bubble generating area for creating bubble in liquid, bubble generating means for generating energy to create and grow the bubble, a plurality of liquid supply ports each arranged for each of the liquid flow paths to be communicated with common liquid supply chamber, and movable member supported with minute gap to the liquid supply port on the liquid flow path side, and provided with free end, the area of the movable member surrounded at least by the free end portion and both sides continued therefrom being made larger than the opening area of the liquid supply port facing the liquid flow path, comprises the step of setting a period for the movable member to close and essentially cut off the opening area during the period from the application of driving voltage to

Abstract: A printhead for an ink jet printer with an array 14 of ink ejection nozzles 22 formed from MEMS techniques. To protect the delicate nozzle structures, a nozzle guard 80 covers the exterior surface of the array 14. A corresponding array of apertures 84 is formed in the guard 80. To attach the guard 80 to the silicon substrate 16 carrying the nozzles 22, alignment formations 148 configured for engagement with complementary formations on a nozzle guard 80. For precise registration between the nozzles 22 and the respective apertures 84 in the guard 80, the alignment formations 148 may be formed using the same etching and deposition techniques used to form the nozzles 22.

Abstract: A liquid discharge head is provided with discharge ports for discharging liquid, liquid flow paths communicated with the discharge ports for supplying liquid to the discharge ports, a substrate having heat generating members for creating bubbles in the liquid, and movable members facing the heat generating members and being arranged in the liquid flow paths. The movable members have a free end on the discharge port side with a specific gap with respect to the heat generating members. The movable member is fixed to the substrate above the heat generating member on the substrate.

Abstract: Methods of forming thermal ink jet resistor structures for use in nucleating ink are described. In one embodiment, the method comprises forming a layer of conductive material over a substrate, and patterning and etching the layer of conductive material effective to form one or more arrays of resistors. Individual arrays comprise multiple, parallel-connected resistor elements and the resistor elements are configured such that failure of any one resistor element will not render its associated resistor array inoperative for nucleating ink. The resistor elements of individual arrays are formed such that collectively, the resistor elements are not independently addressable. Other embodiments are described.

Abstract: A fluid ejection device having storage and methods of forming and using such fluid ejection devices are described. In one embodiment, a substrate comprises multiple heater resistors supported thereby, and configured for ejecting fluid onto a medium. One storage structure is supported by the substrate and configured to store data.

Abstract: Fluid ejection device includes a substrate having a top surface and a bottom surface. A plurality of fluid drop generators are formed on the top surface of the substrate along a shelf region, each including a firing chamber. A fluid feed slot structure is defined in the substrate, and has a side wall. A plurality of features formed in the side wall creates at least one diverging channel directed away from the shelf region.

Abstract: An organic insulating coating formed on a substrate is composed of two layers of a first parylene coating and a second parylene coating. Heat treatment is performed to at least the first parylene coating after being formed, at a temperature below 125° C. for two hours. Then the second parylene coating is formed on the first parylene coating. Occurrence of pinholes is thus prevented at least in one of the two layers of the organic coatings, with the result that insulating properties of the coatings are improved.

Abstract: Embodiments of the present invention comprise capillary fluid transport and containment structures in which a capillarity gradient is provided in a direction other than the primary direction of fluid transport to selectively capture and transport gas bubbles. The structures may be formed with single capillary members or may include a plurality of capillaries, such as sheet capillaries joined by appropriately sized through-holes.

Abstract: The present invention is directed toward an improved heater chip for an ink jet printer. The heater chip has a diamond-like-carbon coating that functions as the cavitation and passivation layers of the heating elements on the heater chip. To improve the efficiency of the heater chip, the diamond-like-carbon coating is surrounded by a material that has a lower thermal conductivity than diamond. This surrounding layer limits thermal diffusion from the heating elements into the heater chip. A smoothing layer of tantalum is deposited over the diamond-like-carbon layer to insure that vaporization of the ink occurs at the ink's superheat limit. The diamond-like-carbon layer is preferably less than 8700 Angstroms in thickness such that less than 1 microjoule of energy is required to expel of ink droplet having a mass between 2-4 nanograms.

Abstract: A liquid discharge head records by generating thermal energy to discharge ink from a discharge port onto a recording medium. The head is provided with a heat dissipating substrate positioned substantially parallel and adjacent to a discharge portion substrate, and a space, which communicates with the outside air, positioned at a surface of the heat dissipating substrate which is opposite the surface of the heat dissipating substrate facing the discharge portion substrate. The space extends in the scanning direction so as to facilitate air flow through the head during carriage movement in order to dissipate heat generated by the head during recording. A cooling fan may be provided to increase the air flow and the consequent heat dissipation.

Abstract: A recording apparatus uses a liquid recording head for effecting recording by ejecting liquid through ejection outlets corresponding to heat generation elements provided in the recording head. The recording head has a heating device for heating the recording head. A controller will select a heat generating element from among the heat generating elements to correct a temperature distribution of the recording head resulting from the heating by the heating device such that the heat generating element generates heat to such an extent that liquid for recording is not ejected through the ejection outlet during the temperature correction.

Abstract: A liquid discharge head comprises discharge energy generating devices each generating energy to be utilized for discharging liquid as drops, and discharge ports arranged to face the discharge energy generating devices, respectively. For this head, the area of each discharge port is smaller than the area of each discharge energy generating device, and each of the discharge ports is arranged in the liquid. With the structure thus arranged, this liquid discharge head is made capable of discharging finer liquid droplets even at longer intervals of discharges, and also, capable of increasing the discharge speed of liquid droplets, thus making the repetition of discharge frequency extremely high, while meeting the demand that increases more for the arrangements of multiple nozzle, higher speed, and finer liquid droplet for the liquid discharge head.

Abstract: A fluid ejection device includes a substrate, a stack of thin film layers and a further substrate. The substrate has a first surface and a second surface, and defines a fluid supply conduit. The stack of thin film layers has a first surface and a second surface, with the first surface of the stack of thin film layers being affixed to the second surface of the substrate. In one embodiment, the stack of thin film layers includes at least one ink energizing element, and defines a plurality of fluid filter openings that are in fluid communication with the fluid supply conduit of the substrate. The fluid filter openings function as a fluid. The further substrate has a first surface coupled to the second surface of the stack of thin film layers, and an exterior second surface.

Abstract: A fluid ejection device has a firing chamber with a feature disposed therewithin.

Abstract: An ink jet print head has plural electrothermal converting elements for generating energy used to discharge an ink droplet, plural ink discharging ports arranged above the electrothermal converting elements and discharging the ink droplet, plural ink flowing paths respectively communicated with the plural ink discharge ports and internally including the electrothermal converting elements, a substrate for arranging the plural electrothermal converting elements in a columnar shape and having an ink supplying port constructed by a through port which is connected with the ink flowing paths and extends along an arranging direction of the electrothermal converting elements, and a discharging port plate having the ink discharge ports. The ink flowing paths are formed between the substrate and the discharging port plate by junctioning the discharging port plate onto the substrate.

Abstract: A droplet generator is provided that is particularly adapted for generating micro droplets of ink on demand in an inkjet printhead having a plurality of nozzles. The droplet generator includes a droplet separator formed from the combination of a droplet assistor and a droplet initiator. The droplet assistor is coupled to ink in each of the nozzles and functions to lower the amount of energy necessary for an ink droplet to form and separate from an ink meniscus extending across the nozzle outlet. The droplet assistor may be, for example, a heater or surfactant supply mechanism for lowering the surface tension of the ink meniscus. Alternatively, the droplet assistor may be a mechanical oscillator such as a piezoelectric transducer that generates oscillations in the ink sufficient to periodically form convex ink meniscus across the nozzle outlets, but insufficient to cause ink droplets to separate from the outlets.

Abstract: An inkjet print head includes an ink drop emission mini-gun and a drop emission sensor integrated in a chip of semiconductor material. The mini-gun is formed by an ink chamber and a nozzle in communication with the ink chamber and the drop emission sensor includes a resistive element arranged in a position adjacent to the ink chamber. The resistance of the resistive element depends on the pressure exerted thereon, so that when the mini-gun emits an ink drop, it is subjected to a recoil movement which causes a change of pressure and hence of resistance in the resistive element; this change in resistance may be detected through suitable circuitry to identify whether and when a drop of ink has been emitted.

Abstract: A fluid ejection device has a firing chamber with a feature disposed therewithin.

Abstract: A method of forming a fluid drop emitting apparatus such as an ink jet printing device that includes forming a portion of a fluid drop generator structure on a first surface of a substrate, forming narrow slots in a second surface of the substrate, and etching the narrow slots to form anchor grooves.

Abstract: In a liquid discharge head having an element substrate on the surface of which are provided in parallel a plurality of discharge energy generating elements generating heat energy for creating a bubble in liquid, a fixed portion provided on the element substrate so as to face the plurality of discharge energy generating elements, and fixed to the element substrate, and a plurality of movable members comprising a movable portion extending from the end portion of the fixed portion and displaced by the bubble, a fulcrum about which the movable portion is displaced is located on the movable portion other than a corner portion formed at the boundary between the movable portion and the fixed portion.

Abstract: A method for manufacturing a liquid discharge head comprises the steps of providing a head main body having liquid flow paths, and an aperture surface having flow path openings communicated with the flow paths; providing a discharge port plate having extrusions each on the circumference of an inside opening communicated with each of the discharge ports, being on the inner face on the side opposite to the discharge port surface provided with discharge ports for discharging liquid, and a base having a substantially flat surface. For this method, the discharge port plate is arranged in a state of these surfaces formed integrally to be in contact; bonding the aperture surface and the inner face to fit the extrusions into the flow path openings by pressing the head main body and the base in the direction of the head main body and the base approaching each other with the discharge port plate between them; and separating the base from other members.

Abstract: Disclosed is a printhead including a substrate having a plurality of fluid heating elements. First, second and third fluid channels deliver fluid to the plurality of fluid heating elements. Each of the first, second and third fluid channels is operatively associated with first, second and third multiplicity's, respectively, of fluid heating elements of the plurality of fluid heating elements. The first and second fluid channels are defined by first and second edges, respectfully, of the substrate. The third fluid channel is defined by a slot extending through the substrate. The first, second and third fluid channels can each deliver a different color ink to their respective fluid heating elements.

Abstract: A liquid discharge head having a plurality of discharge ports to discharge a liquid, a plurality of liquid flow paths, in which an end part permanently communicates with the respective discharge ports, having a bubble generating area to generate a bubble in the liquid, bubble generating unit to generate energy to generate and grow the bubble, a plurality of liquid supply ports arranged in the plurality of liquid flow paths and communicating with a common liquid supply chamber, and a movable member, having a free end, supported with a very small gap by at least part of the liquid flow path side of the liquid supply port, the area surrounded by at least the free end part of the movable member and both side parts continuing thereto being larger than an opening area prepared in the liquid flow path of the liquid supply port, in which in a status of the movable member at rest, the part of the discharge port side of the movable member contacts with a member for forming the liquid supply port and a very small gap is