Abstract: The liquid ejection head includes: a plurality of pressure chambers into which liquid is filled; a plurality of nozzles which are connected to the pressure chambers; a common flow channel which supplies the liquid to the pressure chambers; a plurality of liquid ejection devices which cause the liquid inside the pressure chambers to be ejected through the nozzles; a selector circuit which selects one of the liquid ejection devices to be a destination of a drive signal; a first wiring substrate which transmits the drive signal outputted from the selector circuit to be applied to the one of the liquid ejection devices; and a second wiring substrate which transmits the drive signal to be inputted to the selector circuit, wherein the first wiring substrate is connected to a first face of a member constituting the selector circuit, and the second wiring substrate is connected to a second face of the member constituting the selector circuit, the first and second faces being different to each other.

Abstract: A droplet discharging head comprising: a piezoelectric element that has a flex-deformable piezoelectric body, a first electrode, and a second electrode that sandwich the piezoelectric body therebetween; a vibrating plate arranged at the first electrode side of the piezoelectric element; a wiring plate that is arranged at the second electrode side of the piezoelectric element and is provided with a first electrical wiring that supplies an electrical signal to the piezoelectric element; a pressure chamber provided at a side opposite the piezoelectric element with the vibrating plate disposed therebetween; and a discharge port that discharges droplets from the pressure chamber, the first electrode and the first electrical wiring being individually connected via a through-hole formed in the second electrode, is provided.

Abstract: An ink jet recording head is formed by laminating a nozzle plate, ink pool plates, a through plate, an ink supply path plate, a pressure chamber plate and a vibrating plate in order. These members of the head are bonded to each other with an adhesive. An inner wall of an ink channel is covered with a channel film for continuously covering the entire inner wall.

Abstract: The exposure device that exposes a charged image carrier includes: a light-emitting chip on which light-emitting elements are arrayed in a first scan direction; and a circuit board on which the light-emitting chip is mounted and that includes wiring electrically connected to the light-emitting chip. The light-emitting chip includes: a light-emitting element chip including a first substrate and the light-emitting elements on one surface of the first substrate; a drive element chip including a second substrate, a drive element on the second substrate driving the light-emitting elements and a penetration hole in the second substrate; a first connecting member electrically connecting the light-emitting elements to the drive element, while the light-emitting elements face the penetration hole; and a second connecting member electrically connecting the drive element to the wiring, while a mounting surface of the drive element chip for fixing the light-emitting element chip faces the circuit board.

Abstract: An ink jet recording head is formed by laminating a nozzle plate, ink pool plates, a through plate, an ink supply path plate, a pressure chamber plate and a vibrating plate in order. These members of the head are bonded to each other with an adhesive. An inner wall of an ink channel is covered with a channel film for continuously covering the entire inner wall.

Abstract: A droplet discharging head comprises a pressure chamber in which fluid is filled through a channel, and a nozzle that is connected to the pressure chamber and which discharges the fluid as a droplet. After the droplet discharging head is assembled, at least the wall surfaces contacting the fluid are coated with a carbonized silicon film.

Abstract: A droplet discharging head comprises a pressure chamber in which fluid is filled through a channel, and a nozzle that is connected to the pressure chamber and which discharges the fluid as a droplet. After the droplet discharging head is assembled, at least the wall surfaces contacting the fluid are coated with a carbonized silicon film.

Abstract: An electrical connection substrate includes a substrate main body in which an electrical connection through port is formed, and connection target members arranged on both sides of the substrate main body, respectively. The connection target members are electrically connected to each other through the electrical connection through port, and the electrical connection through port is filled with a fluidized conductive material. The fluidized conductive material thus filled can satisfactorily keep connection of the connection target members to each other through the electrical connection through port.

Abstract: An inkjet recording head includes: nozzles that jet ink droplets; pressure chambers that communicate with the nozzles and contain ink; a diaphragm that configures part of the pressure chambers; an ink pool chamber that pools ink to be supplied to the pressure chambers via ink flow paths; and piezoelectric elements that cause the diaphragm to be displaced, wherein the ink pool chamber is disposed opposite from the pressure chambers with the diaphragm being disposed therebetween, and drive ICs that apply a voltage to the piezoelectric elements are mounted on a piezoelectric element substrate formed to include the diaphragm.

Abstract: A liquid droplet ejecting head including a piezoelectric element substrate including a diaphragm and a piezoelectric element; a liquid pool chamber that pools liquid supplied to a pressure chamber and which is provided opposite a pressure chamber filled with liquid with the piezoelectric element substrate placed in between; an upper substrate arranged so as to separate the liquid pool chamber and the piezoelectric element substrate with the piezoelectric element substrate between with a through port for supplying liquid to the pressure chamber from the liquid pool chamber formed therein; a driver that is mounted on the upper substrate and which drives the piezoelectric element; a connecting component arranged between the opposite upper substrate and the piezoelectric element substrate and which electrically connects this upper substrate to the piezoelectric element.

Abstract: A liquid droplet ejecting head including a channel substrate in which a nozzle and a pressure chamber, which is partitioned off by a pressure chamber dividing wall, are formed; a piezoelectric element substrate having a diaphragm that forms a part of the pressure chamber and a piezoelectric element that displaces this diaphragm; a liquid pool chamber that is formed opposite from the pressure chamber with the piezoelectric element substrate being disposed therebetween an upper substrate disposed opposite from the pressure chamber with the piezoelectric element substrate being disposed therebetween so as to be separated from and face the piezoelectric element substrate; and a dividing wall component provided, when viewing the channel substrate in plane view, along a position corresponding to the pressure chamber dividing wall between the piezoelectric element substrate and the upper substrate so as to contact the piezoelectric element substrate and the upper substrate.

Abstract: A method of manufacturing a liquid droplet ejection head including nozzles that eject liquid droplets, pressure chambers that are communicated with the nozzles and filled with a liquid, a diaphragm that configures part of the pressure chambers, a pool chamber that pools the liquid supplied to the pressure chambers via flow paths, and piezoelectric elements that cause the diaphragm to be displaced, the method including: disposing the diaphragm on a support substrate; disposing the piezoelectric elements on the diaphragm; disposing a top plate including wirings on the diaphragm; and removing the support substrate from the diaphragm to form a piezoelectric element substrate and joining a flow path substrate, in which the pressure chambers are formed, to the piezoelectric element substrate.

Abstract: A sensor chip of an electrical signal detection type, comprises a semiconductor sensing device, the sensor chip being detachable with respect to an inspection device.

Abstract: The present invention provides a piezoelectric element including: a piezoelectric body; and two electrodes between which the piezoelectric body is interposed, wherein the piezoelectric element is covered by a low water permeable insulating film serving as a protective film.

Abstract: A liquid droplet ejection had having: a vibrating pate at which is formed a piezoelectric element which deforms when voltage is applied; a wiring board disposed above the piezoelectric element, an electric wire for deforming the piezoelectric element being disposed at the wiring board; a liquid storage chamber provided at a side opposite to the piezoelectric element, with the wiring board sandwiched therebetween; a pressure chamber provided at a side opposite to the wiring board, with the vibrating plate sandwiched therebetween; an ejection opening that ejects liquid droplets from the pressure chamber; a liquid supply opening that supplies liquid within the liquid storage chamber to the pressure chamber; and an electrical connection portion that passes through the wiring board and electrically connects the piezoelectric element and the electric wire through the liquid supply opening, is provided.

Abstract: An inkjet recording head having: a nozzle ejecting ink drops; a pressure chamber which communicates with the nozzle and in which ink is filled; a vibrating plate structuring a portion of the pressure chamber; an ink pooling chamber pooling ink to be supplied to the pressure chamber via an ink flow path; and a piezoelectric element displacing the vibrating plate. The ink pooling chamber is provided at a side of the vibrating plate opposite the side at which the pressure chamber is provided. A driving IC, which applies voltage to the piezoelectric element, is mounted on a piezoelectric element substrate which is formed so as to include the vibrating plate. Accordingly, there is provided the inkjet recording head which realizes a higher density of nozzles and an accompanying formation of wires at a fine pitch to realize higher resolution, and which can be compact.

Abstract: A droplet discharging head comprising: a piezoelectric element that has a flex-deformable piezoelectric body, a first electrode, and a second electrode that sandwich the piezoelectric body therebetween; a vibrating plate arranged at the first electrode side of the piezoelectric element; a wiring plate that is arranged at the second electrode side of the piezoelectric element and is provided with a first electrical wiring that supplies an electrical signal to the piezoelectric element; a pressure chamber provided at a side opposite the piezoelectric element with the vibrating plate disposed therebetween; and a discharge port that discharges droplets from the pressure chamber, the first electrode and the first electrical wiring being individually connected via a through-hole formed in the second electrode, is provided.

Abstract: The present invention provides a method of manufacturing a substrate which forms a wiring pattern on a substrate having a plurality of through-holes. In the method, the wiring pattern is formed, after burying a filling material into the through-holes and planarizing a surface of the substrate. The filling material may be a conductive material, and a portion of the conductive material may be removed after the wiring pattern is formed. Removal of the portion of the conductive material may be carried out after a protective film, which protects the wiring pattern, is formed. The filling material may be a conductive material and a sacrificial material, and the sacrificial material may be removed after the wiring pattern is formed.

Abstract: The liquid ejection head includes: a plurality of pressure chambers into which liquid is filled; a plurality of nozzles which are connected to the pressure chambers; a common flow channel which supplies the liquid to the pressure chambers; a plurality of liquid ejection devices which cause the liquid inside the pressure chambers to be ejected through the nozzles; a selector circuit which selects one of the liquid ejection devices to be a destination of a drive signal; a first wiring substrate which transmits the drive signal outputted from the selector circuit to be applied to the one of the liquid ejection devices; and a second wiring substrate which transmits the drive signal to be inputted to the selector circuit, wherein the first wiring substrate is connected to a first face of a member constituting the selector circuit, and the second wiring substrate is connected to a second face of the member constituting the selector circuit, the first and second faces being different to each other.

Abstract: A droplet discharging head comprises a pressure chamber in which fluid is filled through a channel, and a nozzle that is connected to the pressure chamber and which discharges the fluid as a droplet. After the droplet discharging head is assembled, at least the wall surfaces contacting the fluid are coated with a carbonized silicon film.