Abstract: The method manufactures a nozzle plate including a nozzle having a tapered section where a diameter gradually decreases from a liquid supply side toward a liquid ejection side, and a straight section which is substantially cylindrical and is situated nearer a liquid ejection side of the tapered section.

Abstract: The method manufactures a nozzle plate, and comprises: a patterned resist formation step of forming a patterned resist on a flat surface of a matrix substrate, the patterned resist having a shape corresponding to a diameter of nozzle holes in a nozzle plate to be formed, the patterned resist having a thickness corresponding to a length of the nozzle holes; a nozzle length regulating member placement step of placing the nozzle length regulating member having a flat surface onto the patterned resist in such a manner that the flat surface of the nozzle length regulating member faces the flat surface of the matrix substrate across the patterned resist; and a nozzle plate formation step of forming the nozzle plate by plating with the patterned resist between the flat surface of the matrix substrate and the flat surface of the nozzle length regulating member.

Abstract: The inkjet printer head includes heating elements and ejection nozzles. Each of the heating elements has a heating resistor which is energized by application of an electric current so that a part of ink which is located in proximity to the heating resistor is boiled to form a bubble. The expansion of the formed bubble causes the ink to be ejected as a droplet through each of the ejection nozzles. Each of said heating elements has no protective film disposed between the heating resistor and the ink in which the bubble is to be formed. A thickness of said heating resistor is in a range of from 2 ?m to 5 ?m.

Abstract: The method of manufacturing a nozzle plate, comprises: a filling step of preparing a plate member having a plurality of holes, and filling a filling material into the plurality of holes, the filling material being capable of transmitting radiation; a liquid-repelling film forming step of forming a liquid-repelling film onto a first surface of the plate member such that the liquid-repelling film covers the plurality of holes and periphery thereof; a first irradiating step of irradiating the radiation to the liquid-repelling film through the filling material, from a side of a second surface of the plate member reverse to the first surface, such that portions of the liquid-repelling film corresponding to the plurality of holes are cured or increased in viscosity; a removing step of removing the filling material and only the portions of the liquid-repelling film corresponding to the plurality of holes; and a second irradiating step of irradiating the radiation to a remaining portion of the liquid-repelling film f

Abstract: The method of manufacturing a nozzle plate comprises the steps of: applying a protective sheet to a first surface of a nozzle plate in which nozzles are to be formed; forming holes which pass through the nozzle plate and have bottoms inside the protective sheet, from a side of a second surface of the nozzle plate reverse to the first surface; filling a filling material into the holes, from the side of the second surface; peeling away the protective sheet after the filling step; forming a liquid-repelling film on the first surface of the nozzle plate after the peeling step; and removing the filling material after the liquid-repelling film forming step.

Abstract: The method of manufacturing a nozzle plate formed with nozzles which eject liquid droplets, the method comprises the steps of: forming and patterning an opaque metal film onto a transparent substrate; forming photosensitive resin over the opaque metal film and the transparent substrate; exposing the photosensitive resin to light from a side adjacent to the transparent substrate; developing the photosensitive resin which has been exposed to the light; forming a metal layer on the opaque metal film after the developing step; and separating at least the transparent substrate from the metal layer, wherein the nozzle plate comprises at least the metal layer, and a liquid droplet ejection surface of the nozzle plate is on a side where the transparent substrate has been separated in the separating step.

Abstract: There is provided an ink jet head including a first drive element which is provided in correspondence with each ink jet nozzle and which has a thin film resistor for ejecting ink droplets from each ink jet nozzle and a thin film conductive electrode for feeding electricity to the thin film resistor, a second drive element which is formed in a vicinity of the first drive element and which vibrates ink in each ink jet nozzle corresponding to the first drive element for changing a meniscus position and a drive signal control device which controls at least one of a drive signal given to the first drive element and a drive signal given to the second drive element so that the ink droplets can be ejected at a desired meniscus position of the ink in each ink jet nozzle. There is also provided an ink jet printer using the ink jet head. The size of ink droplets can be made uniform, whereby a high-quality image can be recorded.

Abstract: The liquid ejection head comprises: ejection elements which include a plurality of ejection holes through which liquid is ejected, a plurality of pressure chambers in communication with the plurality of ejection holes, and a plurality of piezoelectric elements each of which deforms each of the pressure chambers and is provided on a side of the plurality of pressure chambers opposite from a side on which the ejection holes are formed; a common liquid chamber which supplies the liquid to the plurality of pressure chambers and is provided on a side of the pressure chambers opposite from the side on which the ejection holes are formed; a plurality of wiring members each of which is formed in such a manner that at least a portion of the wiring member rises upward from each of the piezoelectric elements or a vicinity of each of the piezoelectric elements through the common liquid chamber in a direction substantially perpendicular to a surface on which the piezoelectric elements are disposed, each of the wiring memb

Abstract: The liquid droplet ejection head comprises: a plurality of pressure chambers which are separated by a partition wall, each of the plurality of pressure chambers being formed with a first member and a second member in opposition to the first member, each of the plurality of pressure chambers having a nozzle and a supply port, the nozzle being formed in the first member for ejecting a droplet of a liquid onto a recording medium, the supply port being formed in the second member for supplying the liquid to the pressure chamber; a piezoelectric element which causes the pressure chamber to deform, the piezoelectric element having an electrode for the piezoelectric element, the piezoelectric element being provided on a side of the second member opposite to an inside of the pressure chamber; a common liquid chamber which supplies the liquid to the pressure chamber through the supply port, the common liquid chamber being provided on the side of the second member on which the piezoelectric element is provided; and a w

Abstract: The liquid ejection head comprises: a plate which has a plurality of ejection ports which eject a liquid; a plurality of pressure chambers connected respectively to the ejection ports; a plurality of piezoelectric elements which respectively deform the pressure chambers, the piezoelectric elements being provided on a side of the pressure chambers opposite to a side on which the ejection ports are formed; a common liquid chamber which respectively supplies the liquid to the pressure chambers, the common liquid chamber being provided on the side of the pressure chambers opposite to the side on which the ejection ports are formed; and a plurality of wiring members which transfer a drive signal to the piezoelectric elements, the drive signal driving the piezoelectric elements for deforming the pressure chambers, wherein: the wiring members are formed so that at least a portion of each of the wiring members rises upward through the common liquid chamber in a substantially perpendicular direction with respect to a

Abstract: The liquid droplet discharge head comprises: a channel which is formed by joining together a plurality of thin plates which are laminated with an adhesive; and an adhesive escape groove which is provided on at least one joined surface of the thin plates in at least one location on a periphery of the channel when a ratio M S ? determined in relation to the channel is greater than a predetermined value, wherein: the ratio M S ? is a ratio between an area M and an area S?; the area M is an area of the adhesive running off to the channel at joining assuming that no adhesive escape groove is provided on the periphery of the channel, the area M being a projected area on a cross-section perpendicular to a flow direction of the channel; and the area S? is an area of a cross-section perpendicular to the flow direction of the channel at post-joining assuming that no adhesive runs off to the channel.

Abstract: An inkjet recording head includes nozzles arrayed in one direction and ink droplet ejecting devices formed in the respective nozzles. Each nozzle has a height difference in a depthwise direction on a side on which ink droplets are ejected and an ink liquid surface is formed between both edges forming the height difference. An inkjet printer uses this inkjet recording head. The inkjet recording head can eject ink obliquely to the ejection surface for correcting recording pitches at joining portions and preventing the periphery of the nozzles from being contaminated by the ink splashed back from image receiving paper. The ejection angle and the ejecting direction can also be suitably selected and adjusted.

Abstract: A display element for displaying an image with an ink has an transparent substrate having a void space for containing the ink therein to form a display section. The space has the first opening and the second opening opposing to each other. The first opening communicates with an atmosphere via an atmosphere communicating passage. The second opening allows the ink to introduce to the space of the image display section from an ink supply passage. The atmosphere communicating passage is controlled to close by a sealing member, whereby the movement of the ink into the space is controlled. The plural display elements are arranged to form a display unit and the plural display units are arranged in a matrix to form an image display device for displaying an image with the ink.

Abstract: The method and apparatus for displaying an image using liquid generate a segment fluid row, in which plural liquid masses each of which includes first liquid having at least one predetermined coloring matter and are separated from each other are arranged in a row shape, by sequentially and intermittently supplying predetermined amounts of the first liquid in accordance with image information of a desired image to be displayed to a flow path provided in accordance with an image display region for image displaying; and display the desired image in the image display region with the first liquid by causing the generated segment fluid row to move to a predetermined position of said flow path.

Abstract: The laminated structure comprises: a plurality of thin plate members; and adhesive which bonds the plurality of thin plate members in layers, wherein: at least one of the plurality of thin plate members has at least one bonding surface to be bonded with a surface of another of the plurality of thin plate members with the adhesive; at least one groove is formed in a breadthways direction of the thin plate member on the bonding surface; and at least one of ends of the groove does not reach an edge of the thin plate member.

Abstract: The display device includes a display portion having a cavity portion surrounded by wall surfaces, at least one part of the wall surfaces being formed of a transparent member and forming a structural color forming surface provided with fine asperities having predetermined regularity, a liquid being hermetically sealed to have a liquid surface in the cavity portion and having a refractive index approximately equivalent to that of the transparent member, an actuator giving a disturbance to the liquid to bring the liquid into contact with the forming surface and a control unit controlling driving of the actuator to switch reflection and transmission characteristics of light when the light is incident into the forming surface, thereby controlling color display using reflected light formed by the forming surface.

Abstract: The liquid filling method is for filling a liquid into a liquid discharge apparatus comprising a nozzle which discharges a droplet of the liquid, a pressure chamber which is in communication with the nozzle and is filled with the liquid to be discharged as the droplet through the nozzle, and a pressure generation device which generates pressure variation in the liquid inside the pressure chamber to cause the droplet to be discharged through the nozzle, and the method comprises the steps of: adjusting a contact angle of the liquid on an inner surface of the pressure chamber to be not more than an angle formed inside the pressure chamber by two mutually adjacent surfaces constituting the inner surface; and filling the liquid into the pressure chamber.

Abstract: The inkjet printer head includes heating elements and ejection nozzles. Each of the heating elements has a heating resistor which is energized by application of an electric current so that a part of ink which is located in proximity to the heating resistor is boiled to form a bubble. The expansion of the formed bubble causes the ink to be ejected as a droplet through each of the ejection nozzles. Each of said heating elements has no protective film disposed between the heating resistor and the ink in which the bubble is to be formed. A thickness of said heating resistor is in a range of from 2 &mgr;m to 5 &mgr;m.

Abstract: The image display apparatus includes an image display unit having an image display surface, an image forming unit for forming an image on the image display surface by ejecting ink droplets toward the image display surface and an image erasing unit for erasing the formed image. Ink holding regions for holding ink droplets impinged to the image display surface and an ink repelling region for holding no ink are formed on the image display surface, and the ink holding regions are regularly arranged so that each ink holding region is surrounded by the ink repelling region.

Abstract: An inkjet recording head includes nozzles arrayed in one direction and ink droplet ejecting devices formed in the respective nozzles. Each nozzle has a height difference in a depthwise direction on a side on which ink droplets are ejected and an ink liquid surface is formed between both edges forming the height difference. An inkjet printer uses this inkjet recording head. The inkjet recording head can eject ink obliquely to the ejection surface for correcting recording pitches at joining portions and preventing the periphery of the nozzles from being contaminated by the ink splashed back from image receiving paper. The ejection angle and the ejecting direction can also be suitably selected and adjusted.