Abstract: The present invention is applicable to, for example, a thermal printing head to form shallow grooves M by removing the insulating films 21, 24, 30, and 33 along at least the rows of the energy transducers.

Abstract: Disclosed is a liquid ejecting recording head with improved operational reliability. A first coating resin layer of a liquid ejecting recording head, having a liquid flow duct and a liquid ejecting orifice, is formed of an oxetane resin composition that contains, as necessary components, an oxetane compound having at least one oxetanyl group in a molecule, and a cationic photopolymerization initiator.

Abstract: Disclosed is a liquid ejecting recording head with improved operational reliability. There is provided a flow duct forming material for a liquid ejecting recording head, which includes an oxetane resin composition that contains, as necessary components, an oxetane compound having at least one oxetanyl group in a molecule, and a cationic photopolymerization initiator.

Abstract: A liquid discharging head includes a plurality of liquid discharging units and a common flow path. The liquid discharging units include ink chambers for containing liquid to be discharged, heating elements disposed in the ink chambers for applying discharge force to the liquid, and a nozzle sheet having nozzles for discharging the liquid in the ink chambers. The common flow path supplies the liquid to the liquid discharging units. The liquid discharging units face the same direction in relation to the common flow path, and the nozzles of the liquid discharging units arc disposed at a predetermined pitch. Adjacent nozzles are separated by a predetermined interval in a direction perpendicular to a direction or arrangement of the nozzles.

Abstract: In a method and an apparatus for ejecting liquid, the processing accuracy of an ejection unit for ejecting ink can be easily increased and the variations in the volume of ink drops, the ejection angle thereof, etc., can be reduced even when dust is mixed in ink. In addition, a reduction in an ink-supply speed at which ink is supplied to an ink ejection unit can be prevented. An ink ejection apparatus includes a plurality of heating units (13) provided on a base member (11), ink cells for pressurizing ink with energy generated by the heating units (13), and nozzles (17) having ejection holes for ejecting the ink which is pressurized in the ink cells. Each of the nozzles (17) is disposed above each of the heating units (13).

Abstract: The present invention fixes a nozzle sheet on a substrate with a predetermined material (5, 6), which has an excellent chemical resistance and sufficient adhesiveness, or more specifically, fixes the nozzle sheet on the substrate with cyclized rubber or with patternable, adhesive elastic material. Moreover, the present invention forms walls for liquid chambers and liquid channels with polyimide.

Abstract: A liquid discharge head includes: a plurality of energy generating elements arranged in one direction on a substrate; a coating layer formed on the substrate and having formed therein a plurality of discharge ports opposed to the energy generating elements; and an individual passage formed on the substrate and extending in a direction orthogonal to a direction in which the energy generating elements are arranged. The coating layer on the individual passage has an opening formed therein.

Abstract: The present invention is applicable to, for example, a thermal printing head to form shallow grooves M by removing the insulating films 21, 24, 30, and 33 along at least the rows of the energy transducers.

Abstract: Disclosed is a liquid discharge apparatus that is capable of setting a proper deflection amount for deflecting an ink discharge direction even when the distance between the ink discharge surface and the ink landing surface of print paper varies. The liquid discharge apparatus includes a head (11) in which a plurality of nozzle-incorporated ink discharge sections are arrayed, discharge direction deflection means for deflecting the discharge direction of an ink discharged from a nozzle of each ink discharge section in the direction of ink discharge section arrangement, distance detection means for detecting the distance (L1) and (L2) between the ink discharge surface of the head (11) and the ink landing surface of print paper (P1) and (P2), and discharge deflection amount determination means for determining the ink discharge deflection amount (discharge angle ? and ?) to be provided by the discharge direction deflection means in accordance with the results of detection by the distance detection means.

Abstract: A liquid ejection head includes a liquid chamber configured to contain liquid to be ejected from a nozzle, a liquid ejection member including the nozzle, and an energy generating element configured to provide energy to the liquid contained in the liquid chamber. The energy generating element ejects the liquid contained in the liquid chamber from the nozzle as a liquid droplet. A depression is formed on a surface of the liquid ejection member around the nozzle such that an opening of the depression has a width greater than a width of an opening of the nozzle and the nozzle is positioned at the bottom of the depression. The interior angle of the bottom corner of the depression is determined to be greater than 90 degrees.

Abstract: A liquid ejecting head having a plurality of heat evolving elements formed on an integral substrate without being divided into more than one part, so that it is capable of controlling the direction of liquid ejection. The liquid ejecting head has heat-energy evolving elements (22) that evolve heat energy to eject liquid. The heat-energy evolving elements (22) are constructed of an integral substrate, assume a zigzag pattern (in plan view), and have conductors or electrodes (36) connected thereto at the turnaround part of the zigzag pattern, so that they are divided into main parts (22a, 22b) to evolve heat energy to eject liquid. Each of the heat-evolving elements has thereon a nozzle through which liquid is ejected.

Abstract: A liquid dispenser includes a substrate and a plurality of liquid-dispensing portions, arranged on the substrate, including at least one liquid chamber for storing liquid, one nozzle, and one heating element, wherein the heating elements are energized to heat liquid stored in the corresponding liquid chambers to eject a droplet of the liquid from the corresponding nozzles; the heating elements and the liquid chambers have a protective layer and an insulating layer therebetween; each heating element, the insulating layer, the protective layer, and each liquid chamber are arranged in that order; the insulating layer isolates the protective layer from the heating elements; and the protective layer comprises an inorganic material, protects the heating elements, has a strip shape so as to cover some of the plurality of heating elements adjacent to each other, and has slits each disposed between the heating elements. A printer includes such a liquid dispenser.

Abstract: The present invention is applied to a printer that discharges ink drops by driving, for example, heater elements. In the case where a plurality of variable pressure generator elements are driven to control the direction in which the drop is discharged, the present invention makes it possible to lay out drive circuits and so on efficiently so as to arrange nozzles in a high density. According to the present invention, in the case where a plurality of variable pressure generator elements 15A and 15B are provided for a liquid chamber, and are controlled to control the direction in which the drop is discharged, a sub-control circuit 31 varies the balance between the variable pressure generator elements 15A and 15B driven by a main control circuit 27. Since the current concerning the sub-control circuit 31 is small, the wiring pattern concerning the sub-control circuit 31 is formed in a narrow width.

Abstract: A flow path structure includes a heating element, a barrier layer, a liquid chamber formed by a part of the barrier layer and a pair of walls confronting each other to hold the heating element therebetween and a first individual flow path and a second individual flow path disposed on both the sides of the liquid chamber to communicate with the liquid chamber, a liquid is supplied to the liquid chamber from at least one of first and second individual flow paths, and the distance U between the walls in the liquid chamber and the flow path width W of the first individual flow path are set to satisfy U>W. With this arrangement, a flow path structure can be provided in which a failure in flow paths due to dusts is unlike to occur and which minimizes the influence of bubbles and has almost no uneven ejection.

Abstract: The present invention fixes a nozzle sheet on a substrate with a predetermined material (5,6), which has an excellent chemical resistance and sufficient adhesiveness, or more specifically, fixes the nozzle sheet on the substrate with cyclized rubber or with patternable, adhesive elastic material. Moreover, the present invention forms walls for liquid chambers and liquid channels with polyimide.

Abstract: A liquid discharging head includes a plurality of liquid discharging units and a common flow path. The liquid discharging units include ink chambers for containing liquid to be discharged, heating elements disposed in the ink chambers for applying flying force to the liquid, and a nozzle sheet having nozzles for discharging the liquid in the ink chambers. The common flow path supplies the liquid to the liquid discharging units. The liquid discharging units face the same direction in relation to the common flow path, and the nozzles of the liquid discharging units are disposed at a predetermined pitch. Adjacent nozzles are separated by a predetermined interval in a direction perpendicular to a direction of arrangement of the nozzles.

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 is applicable to, for example, a thermal printing head to form shallow grooves M by removing the insulating films 21, 24, 30, and 33 along at least the rows of the energy transducers.

Abstract: Flying characteristics of ink droplets are controlled efficiently to the utmost. In one liquid chamber, two heating elements with the same surface-shape and the same heating characteristics are juxtaposed. While energy is simultaneously applied to the two heating elements, by applying energy with different energy surface-densities to the two heating elements so that the bubble-generating time with film boiling differs for the two heating elements, the liquid droplets are controlled so that a flying force with a component parallel to an ejection face of a nozzle is applied to the liquid droplets in a growing process of the liquid droplets.

Abstract: A head module includes a head chip provided with an array of heat generating elements, a nozzle sheet provided with nozzles, a barrier layer for forming ink liquid chambers, a module frame adhered to the nozzle sheet to thereby support the nozzle sheet and provided with a head chip arranging hole for arranging the head chip therein, and a buffer tank which is so disposed as to cover the head chip arranging hole from a surface, on the opposite side of the surface of adhesion to the nozzle sheet, of the module frame and which is for forming a common liquid conduit communicated with all the ink chambers of the head chip.