An ink-jet recording head includes a discharge-port portion including a first discharge-port portion continuing from a discharge port, and a second discharge-port portion communicating the first discharge-port portion with a bubble generation chamber. The second discharge-port portion has an end surface that includes a border portion bordering the first discharge-port portion and is parallel to a main surface of an element substrate. The cross-sectional area of the second discharge-port portion, anywhere from an opening surface facing the bubble generation chamber to an end surface facing the first discharge-port portion, that is parallel to the main surface of the element substrate, is larger than the area of the border portion. The cross section of the opening surface of the second discharge-port portion has a length in a direction perpendicular to an arrangement direction of the discharge ports that is greater than its length in a direction parallel to the arrangement direction.

Ink jet recording head

A liquid-ejecting head includes a channel which is in communication with a nozzle opening and which includes a pressure-generating chamber, a circulation channel that serves to circulate a liquid in the channel, and a pressure generator that serves to generate pressure change. The circulation channel has a narrow portion including a first wall and a second wall, the first wall tilting with respect to a forward direction of a liquid flows and serving to gradually decrease the cross-sectional area, the second wall tilting with respect to the flow direction and serving to gradually increase the cross-sectional area. The tilt angle of the first wall with respect to the inner surface of the circulation channel is larger than the tilt angle of the second wall with respect to the inner surface of the circulation channel at the downstream side.

Liquid ejecting head and liquid ejecting apparatus

A fluid ejection device includes groups of firing cells, sharing a common fire signal and a common address selection mechanism, each firing cell having a drop generator for ejecting fluid and a dynamic memory addressable by the common address selection mechanism. Circuitry interfaces with the firing cells to allow the capture of data during two consecutive select cycles, then firing of all cells during a third cycle.

Fluid ejection device

An ink-jet recording head (1) is mounted on a carriage (2), recording engines (3, 3') for printing a recording sheet with ejected ink droplets are so disposed that a recording sheet can be inserted from one of different sheet feed passages (4, 4') and the ink is supplied to each recording engine (3, 3') from a common main tank (6). An ink-jet recorder has a control means (10) for comparing the amount of external print data with a reference amount of data, divides the print data into units of data of one page if the amount of print data is greater than the reference amount of data, and distributes the external print data to the recording engines. If the amount of print data is less than the reference amount of data, one recording engine is operated singly to execute printing.

Ink jet recorder

An ink-jet head includes a plurality of nozzles that eject ink, a first flat plate layer including at least one flat plate formed with an array of pressure chambers each communicating with a corresponding one of the nozzles, a second flat plate layer including at least one flat plate formed with a common ink chamber having a shape elongated in a direction of the array of the pressure chambers, an ink flow passage that communicates at one end with a corresponding one of the pressure chambers and at the other end with the common ink chamber, an ink supply passage connecting the common ink chamber and an ink supply source, a flat plate member in a shape of a thin film disposed between the first flat plate layer and the second flat plate layer, a filter formed at the flat plate member for filtering the ink, and a damper chamber formed by a flat plate fixed on the flat plate member on a side thereof opposed to the common ink chamber.

Ink-jet head

A liquid-jet head includes: a plurality of head bodies, each having: a nozzle plate having a plurality of nozzles bored therein; a passage-forming substrate having a pressure generating chamber formed therein, which communicates with the nozzle and receives a pressure for use in ejecting a liquid droplet from a pressure generating element; and a head case disposed on the passage-forming substrate at a surface opposite to the nozzle plate and having paths for supplying liquid to the pressure generating chamber therethrough; and a fixing member bonded onto a side of the nozzle plate of each of the plurality of head bodies, to positionally fix the head bodies thereto at predetermined intervals, wherein a reinforcing portion made of a predetermined adhesive agent, which is charged in a clearance between the head bodies fixed to the fixing member, followed by setting, is disposed at the clearance.

Liquid-jet head and liquid-jet apparatus

An ink jet recording head comprises a nozzle forming member provided with a plurality of nozzle orifices for jetting ink, a channel forming substrate provided with a plurality of pressure generating chambers communicated with the associated nozzle orifices, one face of which is bonded to the nozzle forming member, a plurality of piezoelectric elements provided on an face of the channel forming substrate which is opposed to the face bonded to the nozzle forming substrate for causing pressure change to occur in the associated pressure generating chambers, and a reservoir forming member bonded to the face of the channel forming substrate on which the piezoelectric elements are provided, the reservoir forming member having a reservoir section forming at least a part of a reservoir communicated with the pressure generating chambers for supplying ink thereto and a piezoelectric element holding section for defining a space in an area facing the piezoelectric elements such an extent that motion of the respective piezoelectric elements is exhibited while sealing the space hermetically.

Ink jet recording head and ink jet recording apparatus comprising the same

In an ink jet head having: a nozzle plate in which a plurality of nozzle openings are formed; a flow path substrate comprising a reservoir to which ink is externally supplied, and a plurality of pressure chambers which are connected to the reservoir via an ink supply port and which respectively communicate with the nozzle openings; an elastic film which pressurizes ink in the pressure chambers; and driving means located at a position opposing the respective pressure chambers for causing the elastic film to conduct flexural deformation, the pressure chambers are arranged in a single-crystal silicon substrate of a (110) lattice plane and along a lattice orientation.

Ink jet recording head with pressure chambers arranged along a 112 lattice orientation in a single-crystal silicon substrate

An ink jet recording head in which the rigidity of a partition wall is enhanced, pressure generating chambers can be arranged at high density, and the crosstalk between the pressure generating chambers can be reduced, a method for generating the ink jet recording head, and an ink jet recorder. An ink jet recording head comprising a channel forming substrate (10) having a silicon layer of single crystal silicon in which a pressure generating chamber (15) communicating with a nozzle opening is defined, and a piezoelectric element (300) provided in a region facing the pressure generating chamber (15) through a diaphragm constituting a part of the pressure generating chamber (15) and generating a pressure variation in the pressure generating chamber (15), wherein the pressure generating chamber (15) has an opening in one face side of the channel forming substrate (10) but not through the channel forming substrate (10). At least the bottom face of the inside of the pressure generating chamber (15) facing the one face side is constituted of an anisotropic etching stop face which is a surface subjected to anisotropic etching stopped in mid course and the piezoelectric element (300) composed of a film formed by film formation and lithography is provided on the one face side of the channel forming substrate (10).

Ink jet recording head, method for manufacturing the same, and ink jet recorder

PROBLEM TO BE SOLVED: To provide a method of manufacturing a liquid jet head capable of comparatively readily and accurately carrying out the electrical coupling of a driver IC to a piezoelectric element and improving an yield, and the liquid jet head. SOLUTION: To provide a method of manufacturing a liquid jet head capable of comparatively readily and accurately carrying out the electrical coupling of a driver IC to a piezoelectric element and improving the yield, and the liquid jet head. This method of manufacturing the liquid jet head comprises a process of forming a piezoelectric element on one face side of a channel forming substrate with a diaphragm therebetween, a process of bonding a protection substrate to the channel forming substrate at the face of the side of the piezoelectric element and mounting the driver IC on the protection substrate, and a process of determining a position of a terminal of an electrode of the piezoelectric element by referencing a first positioning mark formed on the one face of the channel forming substrate and a position of a terminal of the driver IC by referencing a second positioning mark formed on the protection substrate, and connecting the terminals of the piezoelectric element and the driver IC with each other by a wire-bonding method. COPYRIGHT: (C)2006,JPO&NCIPI

Yoshinao Miyata

Papers

Liquid-jet head and liquid-jet apparatus

Ink jet recording head and ink jet recording apparatus comprising the same

Ink jet recording head with pressure chambers arranged along a 112 lattice orientation in a single-crystal silicon substrate

Ink jet recording head, method for manufacturing the same, and ink jet recorder

Method of manufacturing liquid jet head and liquid jet head