Sii Printek Inc.

Yuki Yamamura

Yoshinori Domae

Yuzuru Kubota

Shuji Sato

Masaru Midorikawa

Shunsuke Yamazaki

Naohiro Tomita

Daichi Nishikawa

Tomoki Ai

Osamu Koseki

Masakazu Hirata

Satoshi Horiguchi

Yuji Nakamura

Misaki Kobayashi

Tomoki Kameyama

Kenji Suzuki

Makoto Suzuki

Hitoshi Nakayama

Masatoshi Toda

Toshihiko Harajiri

Tooru Mine

Suguru Munakata

Ryoichiro Yamashita

Shinji Saeki

Tasuku Yonehara

Mizuki Kudo

Isolation between electrodes is ensured to enhance resistance to a liquid. A conductive film is provided to a surface of a piezoelectric substrate, and laser processing is performed in a groove extending direction on the conductive film between a first groove and a second groove provided to the piezoelectric substrate to thereby form a laser processing area where the conductive film is removed to the surface of the piezoelectric substrate between the first groove and the second groove. In forming the laser processing area, an irradiation operation with a laser is performed along a plurality of laser processing lines extending in the groove extending direction. Further, the irradiation operation with the laser is performed a plurality of times for each of the laser processing lines, and the irradiation operations with the laser performed along the same laser processing line of the plurality of laser processing lines are performed at a time interval from when ending a previous irradiation operation with the laser to when starting a subsequent irradiation operation with the laser.

Method of manufacturing head chip and head chip of liquid jet head

There are provided a head chip and so on capable of improving the print image quality. The head chip according to an embodiment of the present disclosure is provided with an actuator plate having a plurality of ejection grooves and a nozzle plate having a plurality of nozzle holes individually communicated with the plurality of ejection grooves. The plurality of ejection grooves is arranged side by side so as to at least partially overlap each other along a predetermined direction. Further, the nozzle holes adjacent to each other along the predetermined direction out of the plurality of nozzle holes are arranged so as to be shifted from each other along an extending direction of the ejection grooves in the nozzle plate.

Head chip, liquid jet head, and liquid jet recording device

There is provided a head chip and so on capable of achieving the reduction in power consumption and the improvement in print image quality while suppressing the manufacturing cost of the head chip. The head chip according to an embodiment of the present disclosure includes an actuator plate having a plurality of ejection grooves and a plurality of electrodes, a nozzle plate having a plurality of nozzle holes, and a cover plate having a wall part, a first through hole, and a second through hole. The plurality of nozzle holes includes a plurality of first nozzle holes arranged so as to be shifted toward the first through hole, and a plurality of second nozzle holes arranged so as to be shifted toward the second through hole. In a first ejection groove communicated with the first nozzle hole, a first cross-sectional area of a part communicated with the first through hole is smaller than a second cross-sectional area of a part communicated with the second through hole. Positions of both ends of the electrode along the extending direction of the ejection grooves are each aligned in the plurality of electrodes along a predetermined direction.

A liquid jet head chip capable of exerting a stable ejection performance is provided. The liquid jet head chip is provided with an actuator plate and an electrode. The actuator plate has an obverse surface, a reverse surface, and two or more ejection channels which penetrate the actuator plate in a thickness direction from the obverse surface toward the reverse surface, which are disposed so as to be adjacent to each other at intervals in a first direction perpendicular to the thickness direction, and which are disposed so as to extend in a second direction perpendicular to both of the thickness direction and the first direction. The electrode is disposed on an inner surface of the ejection channel, and includes a first electrode part covering the inner surface of the ejection channel continuously from the obverse surface toward the reverse surface, and a second electrode part covering the inner surface of the ejection channel continuously from the reverse surface toward the obverse surface, and overlapping at least a part of the first electrode part.

Liquid jet head chip, liquid jet head, liquid jet recording device, and method of forming liquid jet head chip

There are provided a head chip and a method of manufacturing the same, a liquid jet head, and a liquid jet recording device each capable of suppressing a stray capacitance to improve the image quality. The head chip according to an embodiment of the present disclosure is a head chip having an actuator plate adapted to apply pressure to liquid to jet the liquid. The actuator plate includes an obverse surface and a reverse surface, a channel extending in a predetermined direction and having a first opening provided to the obverse surface and a second opening which is provided to the reverse surface and is shorter in length in the predetermined direction than the first opening, and an electrode having an obverse surface side part disposed on a sidewall of the channel on the first opening side, and a reverse surface side part which is disposed on the sidewall closer to the second opening than the obverse surface side part and is one of equal to and larger than the obverse surface side part in size in the predetermined direction.

Head chip, liquid jet head, liquid jet recording device, and method of manufacturing head chip

There are provided a liquid jet head and a liquid jet recording device capable of enhancing the reliability. A liquid jet head according to an embodiment of the disclosure includes a liquid jet section from which liquid is jetted, an electronic control section electrically connected to the liquid jet section, a main protective member adapted to cover a periphery of the electronic control section, a connection section attached to the electronic control section and adapted to electrically connect an outside of the liquid jet head and the electronic control section to each other, and a connection section protective member configured so as to make a state transition between a protection state of covering the connection section and an exposure state of exposing the connection section.

Liquid jet head and liquid jet recording device

A head chip, a liquid jet head, and a liquid jet recording device capable of achieving the miniaturization while enhancing the reliability are provided. The head chip according to an embodiment of the disclosure includes an actuator plate having a plurality of ejection grooves arranged side by side in a first direction, a plurality of non-ejection grooves arranged side by side along the first direction, and individual electrodes respectively formed in the plurality of non-ejection grooves, a nozzle plate having a plurality of nozzle holes individually communicated with the plurality of ejection grooves, and a cover plate adapted to cover the actuator plate. The cover plate has interconnection connecting sections respectively disposed in end part areas along a second direction perpendicular to the first direction, and adapted to electrically connect a plurality of individual interconnections electrically connected to the individual electrodes to an interconnection board outside the head chip. The plurality of individual interconnections in the interconnection connecting section has a bend part extending in an oblique direction crossing the second direction so as to circumvent a predetermined obstacle. A connection area between the plurality of individual interconnections and the interconnection board in the interconnection connecting section is an area including the bend part.

Head chip, liquid jet head and liquid jet recording device

There are provided a head chip, a liquid jet head, and a liquid jet recording device capable of improving the ejection stability. The head chip according to an embodiment of the disclosure includes an actuator plate having a plurality of ejection grooves each filled with liquid, a nozzle plate having a plurality of nozzle holes individually communicated with the plurality of ejection grooves, and a cover plate having a through hole through which the liquid flows into and/or from the ejection groove, and a wall part adapted to cover the ejection groove. A flow channel of the liquid in a part adapted to communicate the through hole and the ejection groove with each other includes a principal flow channel section, and an expanded flow channel section provided to the wall part, and adapted to increase a cross-sectional area of the flow channel.

There are provided a liquid jet head capable of dealing with jet of a variety of types of liquid, and at the same time superior in easiness in handling. The liquid jet head includes a main body part having a liquid jet head chip and a cooling section, and an inflow side connection unit and an outflow side connection unit each configured so as to selectively be attached to and detached from the main body part. As the inflow side connection unit, it is possible to select the first inflow side cover unit and the second inflow side cover unit. As the outflow side connection unit, it is possible to select the first outflow side cover unit and the second outflow side cover unit.

A liquid jet head includes a plurality of nozzles adapted to jet liquid, a piezoelectric actuator having a plurality of pressure chambers communicated individually with the nozzles and each filled with the liquid, and adapted to change a capacity of each of the pressure chambers, and a control section adapted to apply at least one pulse signal to the piezoelectric actuator to thereby expand and contract the capacity of the pressure chambers to jet the liquid filling the pressure chamber. The pressure chambers adjacent to each other of the plurality of the pressure chambers are set so as to belong to a plurality of groups different from each other. The control section makes the pulse signals different in timing between the plurality of groups and sets a shift amount of the timing in the pulse signals between the respective groups.

Liquid jet head, liquid jet recording device, method for driving liquid jet head, and program for driving liquid jet head

A liquid jet head and a liquid jet recording device capable of accurately detecting the temperature of the ink are provided. A liquid jet head according to an embodiment of the disclosure includes a flow channel member provided with a flow channel of a liquid, and having a high heat conduction part disposed so as to have contact with the liquid flowing inside the flow channel, and a low heat conduction part having lower thermal conductivity than thermal conductivity of the high heat conduction part, a temperature detection element disposed outside the flow channel, and attached to the high heat conduction part, and a liquid jet section from which the liquid is jetted.

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.

Liquid ejecting head and liquid ejecting recording apparatus

A liquid jet head includes a piezoelectric body substrate having an array of alternating ejection grooves and non-ejection grooves opening to a surface of the piezoelectric body substrate. Common drive electrodes are provided on opposed side surfaces of the ejection grooves, and individual drive electrodes are provided on opposed side surfaces of the non-ejection grooves. Two individual wirings are electrically separated from each other on the surface of the piezoelectric body substrate at opposite end sides of each non-ejection groove in a longitudinal direction, and the individual wiring at one end side is electrically connected to the individual drive electrode on one side surface of the non-ejection groove, and the individual wiring at the other end side is electrically connected to the individual drive electrode on the other side surface of the non-ejection groove.

Liquid jet head and liquid jet apparatus

A liquid jet head includes a piezoelectric body substrate having an upper surface, a lower surface, at least two groove arrays each having ejection grooves penetrating from the upper surface to the lower surface, and a first opening portion penetrating from the upper surface to the lower surface between the at least two groove arrays. Drive electrodes are provided on side surfaces of the ejection grooves and terminal electrodes are electrically connected to the drive electrodes. A flexible circuit board is electrically connected to the terminal electrodes and extends from the lower surface to the upper surface of the piezoelectric body substrate through the first opening portion.

Liquid jet head, liquid jet apparatus and method of manufacturing liquid jet head

A liquid jet head has a piezoelectric body substrate which includes a groove row in which ejection grooves penetrating the piezoelectric body substrate from an upper surface through a lower surface and non-ejection grooves open on the upper surface are alternately arranged in a reference direction, common drive electrodes formed on both side surfaces of each of the ejection grooves, and individual drive electrodes formed on both side surfaces of each of the non-ejection grooves. A cover plate is bonded to the upper surface of the piezoelectric body substrate and includes a liquid chamber communicating with the ejection grooves, first through electrodes which penetrate the cover plate in a thickness direction and are electrically connected to the individual drive electrodes, and individual terminals placed on a front surface of the cover plate opposite to the piezoelectric body substrate and electrically connected to the first through electrodes.

Growing community of inventors

Chiba, Japan

Yuki Yamamura