Abstract: In a liquid-ejecting method for ejecting liquid contained in a liquid chamber from a nozzle as a liquid droplet group, the ejection amount of each liquid droplet of the continuously ejected liquid-droplet group can be stabilized corresponding to a wide frequency band of a pulse signal. Also, when one pixel is formed with a plurality of liquid droplets using a head capable of deflecting the ejecting direction of the liquid droplet, the image quality is improved by reducing the landing positional displacement between plural liquid droplets for forming the one pixel.

Abstract: A liquid ejecting recording head using a flow duct material 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: In a liquid-ejecting method for ejecting liquid contained in a liquid chamber from a nozzle as a liquid droplet group, the ejection amount of each liquid droplet of the continuously ejected liquid-droplet group can be stabilized corresponding to a wide frequency band of a pulse signal. Also, when one pixel is formed with a plurality of liquid droplets using a head capable of deflecting the ejecting direction of the liquid droplet, the image quality is improved by reducing the landing positional displacement between plural liquid droplets for forming the one pixel.

Abstract: To ensure satisfactory reliability even if the wiring pattern is formed of a wiring material having an enhanced electromigration resistance, by providing a protective layer for protecting heating elements from dry etching for forming a wiring pattern, on the ink chamber side or other liquid chamber side of each heating element.

Abstract: A liquid discharge recording head which discharges a liquid includes a substrate on which liquid-discharge-energy-generating elements are provided and which constitutes a part of a flow path for supplying the liquid; and a covering resin layer which is provided on the substrate, which constitutes a part of the flow path, and which includes orifices for discharging the liquid, wherein the covering resin layer is composed of an oxetane resin composition containing an oxetane compound having at least one oxetanyl group in its molecule and a photocationic polymerization initiator as essential components.

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: A liquid ejecting head includes a plurality of arrays of liquid ejecting portions each having a nozzle for ejecting a droplet. The nozzle is arranged along each of an imaginary straight line R1 and an imaginary straight line R2 that are arranged in parallel at a distance ? from each other, and a distance, with respect to the direction of the imaginary straight lines R1 and R2, between two adjacent ones of the nozzles respectively arranged on the imaginary straight line R1 and the imaginary straight line R2 is set to a fixed value P. The liquid ejecting portions arrayed along at least one of the imaginary straight lines R1 and R2 are formed so that a liquid is ejected from each of the liquid ejecting portions while being deflected to the other imaginary straight line side.

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: A liquid ejecting head having at least one heat-energy evolving element constructed in a pattern with at least one bend and that evolves heat energy to eject liquid, conductors connected to the heat evolving element and to the bend and a nozzle through which liquid is ejected associated with each heat-energy evolving element.

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: 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 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: The present invention relates to a liquid jetting head, a liquid jetting apparatus, and a method of manufacturing the liquid jetting head. The invention can be particularly adopted to an ink jet printer of a thermal system. A treatment for building up a coating type insulating material film and a treatment for substantially removing the insulating material film in the forming regions of heating elements by etching are repeated at least a plurality of times, whereby deterioration of the heating elements can be prevented even in the case where generation of steps is prevented by an SOG film.

Abstract: A liquid discharge recording head which discharges a liquid includes a substrate on which liquid-discharge-energy-generating elements are provided and which constitutes a part of a flow path for supplying the liquid; and a covering resin layer which is provided on the substrate, which constitutes a part of the flow path, and which includes orifices for discharging the liquid, wherein the covering resin layer is composed of an oxetane resin composition containing an oxetane compound having at least one oxetanyl group in its molecule and a photocationic polymerization initiator as essential components.

Abstract: The present invention relates to a liquid jet head, a liquid jet apparatus, and a method of manufacturing a liquid jet head, and when applied, for example, to an ink jet printer based on the thermal system, the invention makes it possible to sufficiently secure the film thickness of a metal wiring layer concerning a wiring pattern and to reduce the parasitic resistance due to the metal wiring layer. According to the present invention, a wiring pattern 44 is formed by patterning conducted by use of dry etching, and the wiring pattern 44 is connected to heater elements 39 through contact portions 41 formed by use of openings provided in an insulating protective layer 40.

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 relates to a liquid jetting head, a liquid jetting apparatus, and a method of manufacturing the liquid jetting head. The invention can be particularly adopted to an ink jet printer of a thermal system. A treatment for building up a coating type insulating material film and a treatment for substantially removing the insulating material film in the forming regions of heating elements by etching are repeated at least a plurality of times, whereby deterioration of the heating elements can be prevented even in the case where generation of steps is prevented by an SOG film.

Abstract: To ensure satisfactory reliability even if the wiring pattern is formed of a wiring material having an enhanced electromigration resistance, by providing a protective layer for protecting heating elements from dry etching for forming a wiring pattern, on the ink chamber side or other liquid chamber side of each heating element.

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.