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: A liquid discharge apparatus has liquid chambers and nozzles that discharge droplets of liquids contained in the liquid chambers through liquid channels. The liquid discharge apparatus includes a substrate provided with partitions on one face thereof, the liquid chambers and the liquid channels being defined between the partitions. The liquid discharge apparatus further includes a nozzle sheet provided with adhesion-improving layers at least at positions corresponding to the top faces of the partitions and the nozzles for discharging liquid, the nozzle sheet and the top faces of the respective partitions being bonded to each other with the adhesion-improving layers. The liquid discharge apparatus also includes driving elements provided on the face of the substrate at positions corresponding to the liquid chambers, for changing the pressure of the liquid chambers. The liquid discharge apparatus is used as a printer head for ink jet printing.

Abstract: A process includes forming a protective layer in a region of a substrate including a PAD electrode; forming a soluble resin layer in a region including a region on the substrate where an energy generating element has been formed, for forming a liquid chamber; forming a coating resin layer in a region covering the soluble resin layer and a region where an opening is formed above the electrode; forming an opening in the coating resin layer above the energy generating element to form a nozzle; dipping the substrate in an dissolving liquid to dissolve the soluble resin layer; and removing the protective layer after dissolution of the soluble resin layer.

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: A liquid ejection head includes a plurality of liquid ejection elements arrayed in a flat area on a substrate. Each liquid ejection element includes a liquid chamber, a heating element disposed in the liquid chamber, and a nozzle. The heating elements are disposed alternately on a first and second lines spaced by 6 in a zigzag fashion. Each liquid chamber is formed to have a U-like shape in horizontal cross section such that a wall thereof surrounds three sides of a heating element disposed in each liquid chamber. A gap Wx is formed between each two adjacent liquid chambers located on the second line, and a gap Wy is formed between the liquid chambers located on the first line and the liquid chambers located on the second line. The gaps Wx serve as first common flow channels, and the gap Wy serves as a second common flow channel.

Abstract: A liquid discharge apparatus has liquid chambers and nozzles that discharge droplets of liquids contained in the liquid chambers through liquid channels. The liquid discharge apparatus includes a substrate provided with partitions on one face thereof, the liquid chambers and the liquid channels being defined between the partitions. The liquid discharge apparatus further includes a nozzle sheet provided with adhesion-improving layers at least at positions corresponding to the top faces of the partitions and the nozzles for discharging liquid, the nozzle sheet and the top faces of the respective partitions being bonded to each other with the adhesion-improving layers. The liquid discharge apparatus also includes driving elements provided on the face of the substrate at positions corresponding to the liquid chambers, for changing the pressure of the liquid chambers. The liquid discharge apparatus is used as a printer head for ink jet printing.

Abstract: A liquid discharge apparatus has liquid chambers and nozzles that discharge droplets of liquids contained in the liquid chambers through liquid channels. The liquid discharge apparatus includes a substrate provided with partitions on one face thereof, the liquid chambers and the liquid channels being defined between the partitions. The liquid discharge apparatus further includes a nozzle sheet provided with adhesion-improving layers at least at positions corresponding to the top faces of the partitions and the nozzles for discharging liquid, the nozzle sheet and the top faces of the respective partitions being bonded to each other with the adhesion-improving layers. The liquid discharge apparatus also includes driving elements provided on the face of the substrate at positions corresponding to the liquid chambers, for changing the pressure of the liquid chambers. The liquid discharge apparatus is used as a printer head for ink jet printing.

Abstract: A liquid discharge apparatus has liquid chambers and nozzles that discharge droplets of liquids contained in the liquid chambers through liquid channels. The liquid discharge apparatus includes a substrate provided with partitions on one face thereof, the liquid chambers and the liquid channels being defined between the partitions. The liquid discharge apparatus further includes a nozzle sheet provided with adhesion-improving layers at least at positions corresponding to the top faces of the partitions and the nozzles for discharging liquid, the nozzle sheet and the top faces of the respective partitions being bonded to each other with the adhesion-improving layers. The liquid discharge apparatus also includes driving elements provided on the face of the substrate at positions corresponding to the liquid chambers, for changing the pressure of the liquid chambers. The liquid discharge apparatus is used as a printer head for ink jet printing.

Abstract: A liquid discharge apparatus has liquid chambers and nozzles that discharge droplets of liquids contained in the liquid chambers through liquid channels. The liquid discharge apparatus includes a substrate provided with partitions on one face thereof, the liquid chambers and the liquid channels being defined between the partitions. The liquid discharge apparatus further includes a nozzle sheet provided with adhesion-improving layers at least at positions corresponding to the top faces of the partitions and the nozzles for discharging liquid, the nozzle sheet and the top faces of the respective partitions being bonded to each other with the adhesion-improving layers. The liquid discharge apparatus also includes driving elements provided on the face of the substrate at positions corresponding to the liquid chambers, for changing the pressure of the liquid chambers. The liquid discharge apparatus is used as a printer head for ink jet printing.

Abstract: A liquid discharge apparatus has liquid chambers and nozzles that discharge droplets of liquids contained in the liquid chambers through liquid channels. The liquid discharge apparatus includes a substrate provided with partitions on one face thereof, the liquid chambers and the liquid channels being defined between the partitions. The liquid discharge apparatus further includes a nozzle sheet provided with adhesion-improving layers at least at positions corresponding to the top faces of the partitions and the nozzles for discharging liquid, the nozzle sheet and the top faces of the respective partitions being bonded to each other with the adhesion-improving layers. The liquid discharge apparatus also includes driving elements provided on the face of the substrate at positions corresponding to the liquid chambers, for changing the pressure of the liquid chambers. The liquid discharge apparatus is used as a printer head for ink jet printing.

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 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: 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 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: 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 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: The present invention relates to a liquid discharge device, and a method of manufacturing the liquid discharge device. Particularly, the present invention relates to a liquid discharge device in a system in which droplets are ejected by heating with a heating element, and which is capable of effectively avoiding deterioration in reliability due to damage to a protecting layer. In the present invention, heat treatment is performed for stabilizing the connection between the heating element and a wiring pattern, and then an anti-cavitation layer is formed.

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).