Sony Corporation

Takaaki Miyamoto

Minoru Kohno

Shogo Ono

Takeo Eguchi

Manabu Tomita

Kazuyasu Takenaka

Toru Tanikawa

Osamu Tateishi

Shingo Kadomura

Hideki Mori

Iwao Ushinohama

Masato Nakamura

Tatsumi Ito

Kazuhiro Hoshino

Naoki Komai

Mitsuru Taguchi

Akira Yoshio

Koichi Igarashi

Atsushi Kawashima

Toshimitsu Sato

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.

Method of manufacturing a thermal liquid jet head using an etching process

A liquid ejecting head includes a plurality of liquid ejecting portions arrayed in a flat region on a substrate. The liquid ejecting portions each include a liquid chamber that accommodates liquid to be ejected, a heater element arranged in the liquid chamber, the heater element generating bubbles in liquid in the liquid chamber when heated, and a nozzle for ejecting liquid in the liquid chamber in accordance with generation of bubbles by the heater element.

Liquid ejecting head and liquid ejecting apparatus

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 () provided on a base member (), ink cells for pressurizing ink with energy generated by the heating units (), and nozzles () having ejection holes for ejecting the ink which is pressurized in the ink cells. Each of the nozzles () is disposed above each of the heating units (). In addition, first open sides of the nozzles () which face the heating units () serve as ink inlets () and second open sides of the nozzles () serve as the ejection holes (), so that inner spaces of the nozzles () serve as the ink cells, the ink cells not being provided separately.

Method and apparatus for ejecting liquid

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&#x3e;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.

Liquid ejection head and liquid ejection device

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 () that evolve heat energy to eject liquid. The heat-energy evolving elements () are constructed of an integral substrate, assume a zigzag pattern (in plan view), and have conductors or electrodes () connected thereto at the turnaround part of the zigzag pattern, so that they are divided into main parts () to evolve heat energy to eject liquid. Each of the heat-evolving elements has thereon a nozzle through which liquid is ejected.

Liquid ejecting head having selectively controlled heat-energy evolving element regions

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.

Liquid ejection head and liquid ejection apparatus

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 &#x3b4; 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.

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.

Liquid jetting head, liquid jetting apparatus, and method of manufacturing the liquid jetting head

Liquid jet apparatus

In a liquid ejection apparatus including a plurality of chips arranged in a specific direction, each chip including a plurality of liquid ejection units juxtaposed in the specific direction, the displacement of liquid landing position in the specific direction is reduced. A printer head chip includes a heating resistor, which is divided into two and arranged within one ink liquid chamber. The two-divided heating resistors within the one ink liquid chamber are juxtaposed in a direction perpendicular to the lining-up direction of nozzles.

Liquid ejection apparatus

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.

Method of manufacturing a liquid dispenser

Liquid dispenser and printer

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.

Liquid discharge device and method of manufacturing the same

A printer, a printer head, and a method of producing the printer head in which ink drops are caused to flow out by heat, so that an orifice plate can be bonded by sufficiently bringing it into close contact with that to which it is to be bonded. The printer head is formed by successively placing predetermined materials upon each other on a semiconductor substrate of a semiconductor device, and at least one of the lamination materials placed upon each other on the semiconductor substrate is smooth so that a surface where a plate-shaped material forming a nozzle is disposed is smooth.

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Kanagawa, Japan

Takaaki Miyamoto