Abstract: The ink jet recording method performs image recording by a top shooter type thermal ink jet system. Ink is heated with heaters to grow air bubbles until the air bubbles communicate with an atmosphere and ink droplets are ejected above the heaters. Subsidiary ink droplets are ejected before the ink is replenished to predetermined liquid surface levels at which primary ink droplets are ejected after the ink droplets were ejected. The ink jet recording apparatus includes heaters, ink supplying paths for supplying ink to the heaters and driving devices for driving the heaters to heat the ink. The ink ejection amount can be changed to record a high quality image through correction of variations in the ink ejection amount among nozzles and expression with a finer gradation.

Abstract: The liquid ejection head comprises: a plurality of nozzles through which liquid is ejected in an ejection direction; a plurality of pressure chambers which are connected respectively to the nozzles and filled with the liquid; and a plurality of piezoelectric elements which are provided respectively for the pressure chambers, the piezoelectric elements deforming to pressurize and cause the liquid in the pressure chambers to be ejected through the nozzles, the piezoelectric elements being substantially thin plate-shaped and layered in a thickness direction of the piezoelectric elements, the thickness direction being substantially perpendicular to the ejection direction.

Abstract: The liquid ejection head comprises: a pressure chamber which is connected to an ejection port ejecting liquid; an actuator which is disposed inside the pressure chamber and deforms due to prescribed driving; a holding member which holds the actuator; and a shielding member which, when a surface of the actuator held by the holding member is a bottom face, seals off the liquid inside the pressure chamber from side faces of the actuator, while allowing an upper surface of the actuator to make contact with the liquid inside the pressure chamber.

Abstract: The droplet ejecting head includes heating elements each of which has a thermal energy applying surface which imparts energy to a viscous fluid with a viscosity of at least 20 mPa·sec so as to evolve a bubble, fluid supply channels each of which has the heating element on a wall and supplies the fluid toward the heating element and ejection nozzles through each of which the fluid is ejected as a droplet and each of which is in a position opposite the energy applying surface of the heating element across the supply channel. A distance between the energy applying surface and a foremost end of the ejection nozzle from which the droplet is ejected is in a range of from 2 ?m to 8 ?m or the distance is smaller than a growth height of the bubble that has evolved in the fluid by means of the heating element and which has been left to expand by itself until its internal pressure once exceeding one atmosphere decreases to a point below one atmosphere.

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: The liquid ejection head comprises: a nozzle surface on which a plurality of nozzles are arranged; a diaphragm on which a plurality of piezoelectric elements are arranged; a plurality of pressure chambers which are defined between the nozzle surface and the diaphragm, each of the plurality of pressure chambers applying pressure to liquid which is ejected from a corresponding one of the plurality of nozzles; a common liquid chamber which is defined on a side of the diaphragm opposite to a side of the diaphragm on which the plurality of pressure chambers are defined, the common liquid chamber communicating with each of the plurality of pressure chambers via a corresponding supply port, at least a portion of a surface of the common liquid chamber which contacts liquid being made as a thin layer; and a plurality of electrical wires which are formed in a direction substantially perpendicular to a surface of the diaphragm on which the piezoelectric elements are arranged, at least a portion of each of the electrical

Abstract: The liquid ejection head comprises: a nozzle plate which has a plurality of ejection apertures through which a liquid is ejected; a plurality of pressure chambers which are connected respectively to the ejection apertures; a plurality of liquid supply flow channels which supply the liquid respectively to the pressure chambers; a common liquid chamber which supplies the liquid to the liquid supply flow channels; a plurality of pressure generating devices which respectively deform the pressure chambers; and a plurality of electrical wires which supply drive signals to the pressure chamber generating devices, wherein the electrical wires are provided so as to pass through the common liquid chamber.

Abstract: The liquid droplet ejection apparatus includes a substrate for holding on a surface thereof liquid to be ejected and liquid droplet ejection units provided on the substrate, for pushing the liquid to be ejected by a pushing stroke higher than a height of a liquid surface of the liquid to be ejected held on the substrate. A space existing in a liquid droplet ejecting direction of the liquid droplet ejection units is, substantially, an open space. The inkjet recording head and the thermal inkjet recording head includes the liquid droplet ejection apparatus.

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: The liquid droplet discharge head comprises: a first pressure chamber which is filled with a fluid; an actuator which displaces at least one portion of a surface defining the first pressure chamber; a nozzle which discharges a droplet of a discharge liquid; a second pressure chamber which is connected to the nozzle and is filled with the discharge liquid to be discharged from the nozzle; a liquid supply path which supplies the discharge liquid to the second pressure chamber; and a pressure transmitting section which transmits pressure generated in the first pressure chamber due to driving of the actuator to the second pressure chamber, wherein: taking a surface area of a point of application of a force by the actuator which displaces the first pressure chamber to be S1, and taking a surface area of a point of action of a force applied to the second pressure chamber by means of the pressure transmitting section to be S2, a relationship S1>S2 is satisfied; and the droplet of the discharge liquid is discharge

Abstract: The liquid droplet discharge head comprises: a piezoelectric actuator shaped in a cylinder having a hollow part; a pressure chamber shaped in a cylinder formed in the hollow part of the piezoelectric actuator; and a droplet discharge port which is communicated with the pressure chamber and is designed for discharging a droplet of liquid in the pressure chamber by means of deformation of the pressure chamber accompanying displacement of the piezoelectric actuator, wherein the piezoelectric actuator has a structure in which displacement characteristics of a piezoelectric member are intermittently or continuously varied along an axial direction of the cylinder.

Abstract: The inkjet recording head comprises: a first vibrating plate which forms part of a pressure chamber connecting an ink supply port and an ink ejection port; a first actuator which induces ink ejection from the ink ejection port for printing by deforming the first vibrating plate; a second vibrating plate which forms part of the pressure chamber; and a second actuator which induces ink ejection from the ink ejection port for performing maintenance by deforming the second vibrating plate, wherein a relationship K1>K2 is established between a ratio K1 of a volume of ink expelled by deformation of the first vibrating plate in relation to a pressure applied to the first vibrating plate by the first actuator during the ink ejection for printing, and a ratio K2 of a volume of ink expelled by deformation of the second vibrating plate in relation to a pressure applied to the second vibrating plate by the second actuator during the ink ejection for maintenance.

Abstract: The liquid discharge head comprises: a diaphragm; a first piezoelectric member which is formed on a first surface of the diaphragm, the first piezoelectric member driving the diaphragm; and a pressure chamber dividing wall which is formed on a second surface of the diaphragm opposite to the first surface, wherein the first piezoelectric member and the pressure chamber dividing wall are formed by a deposition method.

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: An inkjet head, comprising: a pressure chamber which are arranged two-dimensionally, and deformed by pressure generating unit and discharging ink from nozzles communicated with the pressure chamber; and a piezoelectric element which is included in the pressure generating unit, said piezoelectric element including a thin film piezoelectric element formed by means of a thin film forming technique.

Abstract: The image forming apparatus comprises: nozzles arranged in a line fashion or a two-dimensional fashion; pressure chambers arranged respectively corresponding to the nozzles; and piezoelectric elements each of which causes ink to be discharged from the nozzle by imparting pressure to interior of the pressure chamber corresponding to the nozzle during a drive signal is impressed, wherein, when one of the nozzles discharges the ink, a drive signal is supplied to the piezoelectric element of a non-discharging nozzle neighborhood of the one of the nozzles discharging the ink, the drive signal including a drive component for driving the piezoelectric element of the non-discharging nozzle in an inverse direction to direction of the piezoelectric element of the one of the nozzles discharging 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 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: A droplet ejecting apparatus for discharging liquid from nozzles of pressure chambers by supplying liquid from a liquid tank to said pressure chambers and then contracting said pressure chambers by means of piezoelectric elements, comprising: pressure chamber plates forming said pressure chambers, and to which vibration plates forming walls of said pressure chambers are formed integrally; and a common liquid chamber formed in the liquid tank and connected to respective liquid supply ports of the respective pressure chambers through respective flow passages connected to said respective liquid supply ports; wherein the liquid tank and the pressure chamber plates are mutually superimposed in a layered structure, in positions where the flow passages coincide with the liquid supply ports of the pressure chambers.

Abstract: A droplet discharge head comprising: a plurality of nozzles for discharging droplets, a plurality of pressure chambers provided correspondingly to the plurality of nozzles and filled with liquid to be discharged from the nozzles, a vibration plate constituting one of the wall surfaces of the pressure chambers, and a plurality of laminated piezoelectric bodies fixedly joined at independent positions on the vibration plate that correspond to the plurality of pressure chambers; wherein the end portion of the laminated piezoelectric bodies on the side opposite from the joint surface with the vibration plate is formed into an unrestricted end that is displaceable in the direction of pressure applied to the vibration plate by the laminated piezoelectric bodies, and pressure is applied to the liquid inside the pressure chamber via the vibration plate by expansion and contraction displacement produced by the laminated piezoelectric bodies to discharge droplets from the nozzles.