Abstract: There are provided a liquid jet head and a liquid jet device capable of achieving reduction in size. There are included a first head chip and a second head chip stacked on one another in the Y direction, a first flow channel member disposed on the ?Y direction side of the first head chip, and having an inflow port communicated with an ink tank, and a first ink flow channel adapted to communicate the inflow port and the first head chip with each other, a second flow channel member disposed on the +Y direction of the second head chip, and having a second ink flow channel communicated with the second head chip, and a communication flow channel located between the first flow channel member and the second flow channel member, and adapted to communicate the first ink flow channel and the second ink flow channel with each other.

Abstract: There are provided a head chip, a liquid jet head, and a liquid jet recording device capable of enhancing the reliability. The head chip according to an embodiment of the disclosure includes a first plate having a plurality of pressure chambers adapted to apply pressure to a liquid, a second plate having a plurality of nozzle holes adapted to jet the liquid in response to application of the pressure, and a third plate disposed between the first and second plates, and provided with a plurality of through holes individually communicated with the plurality of pressure chambers and the plurality of nozzle holes, respectively. In the through hole, a second opening region opposed to the second plate is larger than a first opening region opposed to the first plate.

Abstract: According to an embodiment, a liquid ejecting head chip includes an actuator plate and an in-channel electrode. In the actuator plate, a plurality of channels are arranged at a distance in an X-direction. Each of the channels includes an extension portion and a raise-and-cut portion. The extension portion extends in a Z-direction. The raise-and-cut portion continues from the extension portion toward one side of the Z-direction and has a groove depth which is gradually reduced toward the one side of the Z-direction. The in-channel electrode is formed on an inner surface of each of the channels, with a plating film.

Abstract: According to an embodiment, a liquid ejecting head chip includes an actuator plate, a cover plate, a common electrode, and a connection wiring. In the actuator plate, a plurality of discharge channels and a plurality of non-discharge channels which extend in a Z-direction are alternately arranged at a distance in an X-direction. The cover plate is stacked on an AP-side-Y-direction inner side surface, so as to close the plurality of discharge channels and the plurality of non-discharge channels. The common electrode is formed on an inner surface of each of the discharge channels. The connection wiring is divided so as to be formed in at least 3 or more places in the X-direction on the cover plate, and the common electrode connects the connection wiring to the flexible substrate.

Abstract: There are provided a liquid jet head and a liquid jet recording device each capable of appropriately cutting off the liquid column formed immediately after being jetted from the jet hole to prevent the satellite droplet from generating, and further achieving easier maintenance of the jet hole part. The liquid jet head includes a drive actuator, a jet hole plate, and a flow channel operating actuator. The drive actuator applies a pressure variation to a liquid filled therein. The jet hole plate is disposed on a downstream side of the drive actuator and adapted to jet the liquid having flown out from the drive actuator from the jet hole to the outside of the drive actuator.

Abstract: A liquid ejecting head is mounted on a carriage in which a first positioning hole defined by a first inner surface is provided. The liquid ejecting head includes a first positioning member and a first intermediate member. The first intermediate member includes a first expansion portion being capable of being inserted into a first positioning hole and abutting on the first inner surface by expanding in a radial direction intersecting with an insertion direction of the first expansion portion. The first expansion portion includes a first insertion hole into which the first positioning member is inserted and expands in the radial direction by the first positioning member being inserted into the first insertion hole.

Abstract: An ejection volume of a liquid can more finely be adjusted without lowering the ejection speed. The liquid jet head includes a plurality of nozzles adapted to jet the liquid, a piezoelectric actuator having a plurality of pressure chambers corresponding respectively to the nozzles and filled with the liquid, and adapted to vary a capacity of each of the pressure chambers, and a control section adapted to apply a pulse signal to the piezoelectric actuator to thereby expand and contract the capacity of the pressure chamber so as to jet the liquid with which the pressure chamber is filled. The control section generates a drive waveform including a plurality of the pulse signals adapted to expand the capacity of the pressure chamber, and sets a crest value of either of the pulse signals other than the pulse signal applied last to a different value from a crest value of another of the pulse signals in the drive waveform.

Abstract: A liquid jet head includes: a nozzle plate including a nozzle array, the nozzle array including a plurality of nozzle holes each extending in a Z direction, the nozzle holes being arranged side by side in an X direction; a head chip disposed in a +Z direction with respect to the nozzle plate and including ejection channels communicating with the respective nozzle holes; a manifold disposed in a +Y direction with respect to the head chip, the manifold being configured to support the head chip by a face facing a ?Y direction and including an ink flow path communicating with the ejection channels; and a drive board supported on the face facing the ?Y direction of the manifold and electrically connected to the head chip.

Abstract: A discharge channel and a non-discharge channel are formed to have a similar shape, that is, to include extension portions and raise-and-cut portions continuing from end portions of both the extension portions, respectively. Then, imparting of a catalyst, washing of an unnecessary catalyst, plating, and the like are performed on a target surface, as a plating step. In an embodiment, an electrode clearance groove is formed after the plating step. Since channel grooves for the discharge channel and the non-discharge channel have a similar shape, it is possible to cause a water flow to uniformly flow in the channels when washing is performed, and thus to avoid an occurrence of a situation in which a lump is formed in the channel groove by plating.

Abstract: A liquid jet head includes an actuator plate on which are formed ejection channels which extend in a channel extending direction and are filled with ink, and dummy channels which extend in the channel extending direction and are not filled with ink. A nozzle plate is laminated on the actuator plate and includes nozzle holes each communicating with a corresponding ejection channel at a central part in the channel extending direction of the ejection channel. The actuator plate includes a first channel row and a second channel row each of which includes the ejection channels and the dummy channels alternately arranged side by side in the X direction, the first and second channel rows being spaced apart in the channel extending direction. The ejection channels and the dummy channels are each symmetric with respect to a plane that passes through the center in the channel extending direction and perpendicular to the channel extending direction.

Abstract: Channel grooves for a discharge channel and a non-discharge channel are formed in the surface of an actuator plate by cutting. The discharge channel includes an extension portion and a raise-and-cut portion, and the non-discharge channel also includes an extension portion and a raise-and-cut portion. In an embodiment, an electrode clearance groove is formed in advance by cutting with a dicing blade or the like. After the electrode clearance groove is formed, an electrode is formed by plating. Since plating is performed after the electrode clearance groove is formed, a clearance groove electrode is integrally formed with an AP-side common pad in the electrode clearance groove, and thus the clearance groove electrode and the AP-side common pad are short-circuited. Thus, an electrode separation portion is formed by cutting a short-circuited portion of the clearance groove electrode and the AP-side common pad through cutting or irradiation with laser.

Abstract: A liquid ejection head includes: actuator plates having discharge channels to be filled with an ink; sub-plates stacked on the ?Z-direction end surfaces of discharge channels in the actuator plates along a flow direction of the ink and having communication paths communicating with the discharge channels; and a nozzle plate stacked on the ?Z-direction end surfaces of the communication paths in the sub-plates along the flow direction and having nozzle holes communicating with the discharge channels through the communication paths. The ?Z-direction end surfaces of the sub-plates are polished.

Abstract: An overvoltage is prevented from being applied to a circuit. A full-bridge circuit is provided with a first switch having an output terminal connected to one end of a capacitive load, and switching output to the output terminal between a power supply and a ground, a second switch having an output terminal connected to the other end of the capacitive load, and switching output to the output terminal between the power supply and the ground, a first waveform generation section adapted to output a drive waveform for driving the first switch, a second waveform generation section adapted to output a drive waveform for driving the second switch, a detection section adapted to detect voltages of the drive waveforms output by the first waveform generation section and the second waveform generation section, and a control section adapted to control the output of either of the switches based on the voltages detected by the detection section.

Abstract: A carriage includes: a base plate; a liquid jet head including a support plate attached to the base plate; a first engagement portion formed on one end in a Y direction of the support plate; a fixing tool for positioning and fixing the support plate with respect to the base plate, the fixing tool being fixed to the base plate slidably in an X direction by screws and engaged with the first engagement portion; and a flat spring portion that presses the fixing tool toward the base plate. The fixing tool allows movement in the Y direction of the first engagement portion with respect to the fixing tool, and restricts movement in the X direction of the first engagement portion and movement in a thickness direction of the base plate of the first engagement portion with respect to the fixing tool.

Abstract: The present invention relates to a nozzle plate having small-diameter nozzle holes and large-diameter nozzle holes that are larger in diameter than the small-diameter nozzle holes and communicate with the small-diameter nozzle holes on the downstream side along the direction of ink flow.

Abstract: A cleaning device includes a blade unit configured to move relative to an ink jet head and to wipe an ejection surface of the ink jet head. The blade unit includes a first blade and a second blade that are arranged in a moving direction of the blade unit and formed into flexible plate shapes and a blower that makes an inner space, which is defined by the first blade and the second blade, into a negative pressure.

Abstract: There is provided a liquid jet head capable of preventing a damage of an actuator plate without degrading the quality of characters and images to be recorded on a recording medium. The liquid jet head includes a nozzle plate, an actuator plate provided with an exposed area exposed from the nozzle plate, a nozzle guard provided with an opening section, and a bonding layer disposed at least between the actuator plate including the exposed area and the nozzle guard and bonding the actuator plate and the nozzle guard to each other. The nozzle guard includes a non-contact section continuing throughout an area from a place opposed to the exposed area to an inner circumferential edge of the opening section, and opposed to the actuator plate across the bonding layer, and an alignment section disposed on the opposite side to the non-contact section across the opening section, and carrying out the alignment between the nozzle plate and the nozzle guard.

Abstract: A liquid jet head includes: a head chip including a channel to be filled with ink; a manifold that supports the head chip and includes an ink flow path communicating with the ejection channel; and a heater and a drive board that are supported on the manifold and heat ink inside the ink flow path. The ink flow path extends in a meandering manner.

Abstract: A liquid jet head includes a partition separating adjacent grooves, a lower substrate fixing a lower portion of the partition, and an upper substrate installed on an upper end surface of the partition. The partition includes an electrode layer on a surface lower than the upper end surface, the electrode layer including an outer surface approximately perpendicular to the upper end surface, the outer surface continuing to the upper end surface through a first convex curved surface curving outward.

Abstract: A manufacturing method of a liquid jet head includes: a groove formation step of forming ejection grooves and non-ejection grooves alternately in the upper surface of an actuator substrate; a cover plate processing step of forming a recessed portion in the upper surface of a cover plate and slits penetrating from the bottom surface of the recessed portion to the lower surface opposite to the upper surface; an electrode formation step of forming conductive films on the both side surfaces and front surface of the ejection grooves, the both side surfaces of the non-ejection grooves, the inner surfaces of the slits and the recessed portion, and the lower surface of the cover plate; and a substrate joining step of joining the lower surface of the cover plate to the upper surface of the actuator substrate so as to communicate the slits with the ejection grooves.