With Piezoelectric Force Ejection Patents (Class 347/68)
  • Patent number: 10854806
    Abstract: A vibrating device includes a piezoelectric element, a wiring board electrically connected with the piezoelectric element, and a diaphragm including a metal. The piezoelectric element and the wiring board are bonded to the diaphragm. The piezoelectric element includes a piezoelectric element body, a plurality of internal electrodes, and a plurality of external electrodes. The piezoelectric element body has a first principal plane and a second principal plane opposed to each other. The plurality of internal electrodes is disposed in the piezoelectric element body. The internal electrodes are opposed to each other in a direction in which the first principal plane and the second principal plane are opposed. The plurality of external electrodes is disposed on the first principal plane, and is electrically connected with corresponding internal electrodes, of the plurality of internal electrodes. The wiring board has a resin film and a plurality of conductors.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: December 1, 2020
    Assignee: TDK CORPORATION
    Inventors: Kaoru Kijima, Tatsuya Taki, Kazushi Tachimoto
  • Patent number: 10836165
    Abstract: A fluid discharge head according to an embodiment includes abase including a plurality of first grooves disposed side by side in a first direction and a plurality of second grooves disposed side by side in the first direction and respectively disposed among the plurality of first grooves, an individual wire including individual electrodes formed in the second grooves, the individual wire being extended to one side in a second direction crossing the first direction, a common wire including common electrodes formed in the first grooves, the common wire being extended to the other side in the second direction, a connection wire connected to the common wire on the other side in the second direction and leading to the one side, and a nozzle plate including nozzles that communicate with the first grooves of the base.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: November 17, 2020
    Assignee: TOSHIBA TAC KABUSHIKI KAISHA
    Inventor: Masashi Shimosato
  • Patent number: 10828895
    Abstract: Provided is a precision instrument including a moisture absorbent in an internal space, in which the moisture absorbent is a solid material of which a surface has a water resistance property.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: November 10, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Yoshinori Nakajima
  • Patent number: 10833244
    Abstract: A piezoelectric element having a vibrating section including a vibrating plate, a first electrode, a piezoelectric layer, and a second electrode, in which a crystal orientation of a piezoelectric material forming the piezoelectric layer is (100) and a crystal structure of the piezoelectric material is a tetragonal crystal, and a total thickness T1 of the vibrating plate and the first electrode and a total thickness T2 of the piezoelectric layer and the second electrode have a relationship of T1?T2.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: November 10, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Takayuki Yonemura, Yasuhiro Itayama, Chikara Kojima
  • Patent number: 10807378
    Abstract: An ink set comprises black ink having a static surface tension A and yellow ink having a static surface tension B, wherein the static surface tension A is 28.7 mN/m or more and greater than the static surface tension B, wherein the ink set is used in an image forming device including an inkjet head including a nozzle plate including a first nozzle array and a second nozzle array disposed adjacent to the first nozzle array, the first nozzle array including multiple first nozzles configured to discharge the black ink and a second nozzle array including multiple second nozzles configured to discharge the yellow ink wherein each nozzle of the multiple first nozzles and the multiple second nozzles has a cylindrical portion having a length of 25 ?m or longer along an axial direction with an opening on an ink discharging side of the nozzle plate.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: October 20, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Watanabe, Taku Hatakeyama, Kaoru Tadokoro, Sho Oyamatsu, Tomohiro Inoue, Hiroshi Gotou, Mio Kumai
  • Patent number: 10807365
    Abstract: A liquid jetting apparatus includes a nozzle plate having a nozzle, and a channel unit having a first surface facing and joined with the nozzle plate. The channel unit has a first channel member having the first surface, and a second channel member having a second surface facing and joined with the first channel member. The second channel member is formed with a first pressure chamber, a second pressure chamber, a first opening and a second opening defined by the second surface, a first connecting channel connecting the first pressure chamber and the first opening, and a second connecting channel connecting the second pressure chamber and the second opening. The first channel member is formed with a third connecting channel connecting the first pressure chamber and the second pressure chamber.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: October 20, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Keita Sugiura, Shohei Koide, Jiro Yamamoto, Hiroshi Katayama
  • Patent number: 10807364
    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 is a head chip adapted to jet liquid including an actuator plate having a plurality of ejection grooves arranged side by side along a first direction, and extending in a second direction crossing the first direction, a plurality of common electrodes formed on respective inner surfaces of the plurality of ejection grooves, and a commonalization interconnection adapted to electrically connect the plurality of common electrodes to each other, and a nozzle plate having a plurality of nozzle holes individually communicated with the plurality of ejection grooves.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: October 20, 2020
    Assignee: SII PRINTEK INC.
    Inventors: Daichi Nishikawa, Misaki Kobayashi, Tomoki Kameyama, Hitoshi Nakayama
  • Patent number: 10792921
    Abstract: A liquid jetting head includes individual channels, a first common channel and a second common channel being return channels for returning liquid from the individual channels to a storage chamber for storing the liquid, and a third common channel being a supply channel for supplying the liquid from the storage chamber to the individual channels. The first to third common channels are arranged in an arrangement direction. The third common channel is arranged between the first and second common channels in the arrangement direction and extends in an extending direction. The individual channels include: first individual channels which connect the first common channel and the third common channel; and second individual channels which connect the second common channel and the third common channel, and each of the individual channels has a nozzle, and a communicating channel that runs directly above the nozzle.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: October 6, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Keita Sugiura
  • Patent number: 10780694
    Abstract: There is provided a liquid discharge head, including: a piezoelectric body having a plurality of piezoelectric layers stacked on top of each other in a stacking direction; individual electrodes; and a first common electrode. Each of the individual electrodes has a first portion and a second portion arranged in the first direction at an interval, and a third portion coupling the first portion with the second portion. The first common electrode includes a first extending portion as well as first protrusions and second protrusions protruding from the first extending portion. Portions of the first extending portion overlapping in the stacking direction with the third portions are formed having through holes passing through the first common electrode in the stacking direction.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: September 22, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Keiji Kura
  • Patent number: 10784115
    Abstract: A method of etching features in a silicon wafer includes coating a top surface and a bottom surface of the silicon wafer with a mask layer having a lower etch rate than an etch rate of the silicon wafer, removing one or more portions of the mask layer to form a mask pattern in the mask layer on the top surface and the bottom surface of the silicon wafer, etching one or more top surface features into the top surface of the silicon wafer through the mask pattern to a depth plane located between the top surface and the bottom surface of the silicon wafer at a depth from the top surface, coating the top surface and the one or more top surface features with a metallic coating, and etching one or more bottom surface features into the bottom surface of the silicon wafer through the mask pattern to the target depth plane.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: September 22, 2020
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., The Board of Trustees of the Leland Stanford Junior University
    Inventors: Feng Zhou, Ki Wook Jung, Ercan Mehmet Dede, Mehdi Asheghi, Kenneth E. Goodson
  • Patent number: 10773523
    Abstract: A liquid discharge head includes: a pressure chamber communicating with a nozzle through which liquid is discharged; a piezoelectric element having a lamination structure in which a first electrode, a piezoelectric body layer, and a second electrode are laminated in this order; a vibration plate installed between the first electrode of the piezoelectric element and the pressure chamber; a protective substrate in which an internal space for housing the piezoelectric element is formed; and a lead-out wiring connected to the second electrode, in which a column portion is provided at a position overlapping with the piezoelectric element in the internal space of the protective substrate when viewed in a plan view, and the lead-out wiring is provided on a wall surface of the column portion.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: September 15, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Osamu Tonomura, Masao Nakayama, Eiju Hirai
  • Patent number: 10751995
    Abstract: A liquid ejection head in the present disclosure provided with a first channel member including a first surface, a plurality of ejection ports in the first surface, a plurality of pressurizing chambers which are individually communicated with the plurality of ejection ports, and a second surface on the opposite side to the first surface; a pressurizing member on the second surface; and a second channel member including a third surface, a fourth surface on the opposite side to the third surface, a raised part which protrudes from the fourth surface, and a first through hole in the raised part. The second channel member is provided on a region in the second surface of the first channel member, in which the pressurizing member is not arranged. When viewed on a plane, an outer circumference of the raised part is located on inner side from an outer circumference of the fourth surface.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: August 25, 2020
    Assignee: KYOCERA Corporation
    Inventor: Kenko Gejima
  • Patent number: 10751996
    Abstract: A piezoelectric device includes in a piezoelectric layer, a recessed portion which is provided outside an active portion and opens on the side opposite to a substrate is provided, in a lamination direction of the substrate and a piezoelectric element, a first barrier layer formed of a material other than the zirconium oxide is formed in a region of a vibration plate opposite to the substrate and overlapping a bottom surface of the recessed portion, and the first barrier layer is not formed in a portion of a region overlapping the active portion in the lamination direction.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: August 25, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Motoki Takabe, Masao Nakayama, Takanori Aimono, Takashi Kasahara
  • Patent number: 10744778
    Abstract: A liquid ejection head includes a plurality of liquid chambers each including an energy generating element that generates energy for ejecting a liquid, an ejection opening that ejects the liquid, and a liquid supply opening that supplies the liquid, the liquid flowing in a first direction in the plurality of liquid chambers, and the plurality of liquid chambers being arranged in a second direction that intersects the first direction, and a plurality of first side walls that extend in the first direction and that form walls on both sides of the plurality of liquid chambers. In the liquid ejection head, each of the plurality of first side walls includes a fragmenting portion that fragments each of the plurality of first side walls in the first direction.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: August 18, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akiko Hammura, Shintaro Kasai, Yoshiyuki Nakagawa
  • Patent number: 10744769
    Abstract: A liquid ejection head includes: nozzles; a channel member including a plurality of pressure chambers each in communication with a corresponding one of the nozzles; and a plurality of piezoelectric elements corresponding to the pressure chambers. Each piezoelectric element includes: a vibrating film covering the corresponding pressure chamber; a piezoelectric film positioned opposite to the pressure chamber with respect to the vibrating film; a first electrode interposed between the vibrating film and the piezoelectric film; and a second electrode having compressive stress and positioned opposite to the vibrating film with respect to the piezoelectric film. The piezoelectric film has a ratio of (001) orientation to (100) orientation that is equal to or greater than 50%. The vibrating film and the piezoelectric film are deflected convexly toward the corresponding pressure chamber while no potential difference is produced between the first electrode and the second electrode.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: August 18, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Toru Kakiuchi, Taiki Tanaka, Yuichi Ito
  • Patent number: 10737492
    Abstract: A liquid ejecting head includes a piezoelectric element which includes a piezoelectric layer, and a first electrode and a second electrode sandwiching the piezoelectric layer therebetween, a leading-out wiring provided on an upper portion of the piezoelectric element and including a wiring layer made of gold or platinum and an underlayer which are patterned, and an insulating protective film which covers at least an exposed portion on the underlayer of the leading-out wiring.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: August 11, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiki Sugawara, Takeshi Yasoshima, Miyuki Muramoto
  • Patent number: 10717280
    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 is a head chip adapted to jet liquid including an actuator plate having a plurality of ejection grooves and a plurality of non-ejection grooves alternately arranged in parallel to each other along a first direction and each extending in a second direction crossing the first direction, and a nozzle plate having a plurality of nozzle holes individually communicated with the plurality of ejection grooves, and to be bonded to the actuator plate. The non-ejection grooves each partially open in a bonding surface of the actuator plate with the nozzle plate.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: July 21, 2020
    Assignee: SII Printek Inc.
    Inventors: Daichi Nishikawa, Misaki Kobayashi, Tomoki Kameyama
  • Patent number: 10703102
    Abstract: The microfluidic device has a plurality of ejector elements. Each ejector element includes a first region, accommodating a first fluid flow channel and an actuator chamber; a second region, accommodating a fluid containment chamber; and a third region, accommodating a second fluid flow channel. The fluid containment chamber is fluidically coupled to the first and to the second fluid flow channels. The second region is formed from a membrane layer, from a membrane definition layer, mechanically coupled to the membrane layer and having a membrane definition opening, and a fluid chamber defining body, mechanically coupled to the membrane definition layer and having a chamber defining opening, with a width greater than the width of the membrane definition opening. The width of the membrane is thus defined by the width of the chamber defining opening.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: July 7, 2020
    Assignee: STMICROELECTRONICS S.R.L.
    Inventors: Domenico Giusti, Mauro Cattaneo, Carlo Luigi Prelini
  • Patent number: 10693438
    Abstract: An acoustic wave resonator includes: a substrate; a resonating portion formed on a first surface of the substrate; a metal pad connected to the resonating portion through a via hole formed in the substrate; and a protective layer disposed on a second surface of the substrate and including a plurality of layers, wherein the plurality of layers includes an internal protective layer directly in contact with the second surface of the substrate and formed of an insulating material including an adhesion that is stronger than an adhesion of other layers, among the plurality of layers.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: June 23, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Yeong Gyu Lee, Sung Won Im, Dong Woon Chang, Hyung Goo Baek
  • Patent number: 10639891
    Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: May 5, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kyohei Naito, Shohei Koide, Jiro Yamamoto
  • Patent number: 10639898
    Abstract: A liquid ejecting apparatus includes a head unit capable of ejecting a liquid from a nozzle provided in a nozzle surface of a nozzle plate, an anchoring plate in which the head unit is anchored and that is provided with an opening region that exposes the nozzle surface, and a wiper member that wipes an anchoring plate exposed-surface located on the opposite side of the head unit of the anchoring plate and the nozzle surface. When an angle of contact between the nozzle surface and the liquid is taken as ?n, an angle of contact between the anchoring plate exposed-surface and the liquid is taken as ?s, and an angle of contact between the wiper member and the liquid is taken as ?w, the relationship ?n>?s>?w>90° is fulfilled.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: May 5, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Shunsuke Watanabe, Yuma Fukuzawa, Katsumi Enomoto, Hiroaki Okui, Yoshinao Miyata, Satoshi Oguchi, Fujio Akahane
  • Patent number: 10639893
    Abstract: There is provided a piezoelectric device including a pressure chamber, a piezoelectric element, and a diaphragm disposed between the pressure chamber and the piezoelectric element. The diaphragm has a crystal plane of an anisotropic single crystal silicon base of which a Young's modulus varies according to a direction in the crystal plane. In a vibration region of the diaphragm, which overlaps the pressure chamber in plan view, a first Young's modulus in a first direction, out of Young's modulus in the crystal plane, is higher than a second Young's modulus in the crystal plane in a second direction intersecting the first direction. A width of the piezoelectric element in the first direction is larger than a width of the piezoelectric element in the second direction.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: May 5, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Sayaka Yamasaki, Hiroaki Tamura
  • Patent number: 10632743
    Abstract: A fluid ejection device includes a fluid slot, at least one fluid ejection chamber communicated with the fluid slot, a drop ejecting element within the at least one fluid ejection chamber, a fluid circulation channel communicated with the fluid slot and the at least one fluid ejection chamber, and a fluid circulating element communicated with the fluid circulation channel. The fluid circulating element is to provide on-demand circulation of fluid from the fluid slot through the fluid circulation channel and the at least one fluid ejection chamber.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: April 28, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alexander Govyadinov, Paul A Richards, Chris Bakker
  • Patent number: 10637434
    Abstract: An elastic wave device includes a piezoelectric substrate, an IDT electrode on the piezoelectric substrate, a support member that is provided on the piezoelectric substrate so as to surround the IDT electrode, a cover that covers the support member, via electrodes that penetrate through the support member and the cover, and bumps that are bonded to the via electrodes. The IDT electrode is located in a hollow space that is enclosed by the piezoelectric substrate, the support member and the cover. A protruding portion extends along at least a portion of an outer peripheral edge of a surface of the cover that is on the opposite side from the piezoelectric substrate, and the protruding portion extends in a direction away from the piezoelectric substrate.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: April 28, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Daisuke Fukuda, Shinichi Fukuda
  • Patent number: 10603918
    Abstract: There is provided a recording apparatus including an apparatus main body including a recording head that ejects liquid from a nozzle opening formed in a nozzle plate, and an upstream electrode portion and a downstream electrode portion that are disposed on an upstream side and a downstream side in a transporting direction of the medium to sandwich the position facing the nozzle plate therebetween, in which the upstream electrode portion and the downstream electrode portion are configured such that an electric field is formed between the upstream electrode portion and the downstream electrode portion as voltages are applied.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: March 31, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Kinya Ozawa
  • Patent number: 10608165
    Abstract: Provided is a piezoelectric element including a first electrode provided above a substrate, a piezoelectric layer provided above the first electrode, containing potassium, sodium, and niobium, and having a perovskite structure, and a second electrode provided above the piezoelectric layer. In a case where the piezoelectric layer is divided into two portions at a center thereof in a thickness direction, the piezoelectric layer includes a first portion on the first electrode side and a second portion on the second electrode side. The piezoelectric layer includes line defects. A density of the line defects in the second portion is higher than a density of the line defects in the first portion.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: March 31, 2020
    Assignee: Seiko Epson Corportion
    Inventors: Tomohiro Sakai, Koichi Morozumi, Kazuya Kitada, Harunobu Koike, Koji Sumi
  • Patent number: 10603920
    Abstract: A liquid ejecting apparatus includes: a pressure chamber configured to communicate with a nozzle hole through which a liquid is discharged; a liquid chamber having a first opening configured to communicate with the pressure chamber; a first slide section arranged in the liquid chamber and having a first through-hole at a position corresponding to the first opening; and a driving device configured to drive the first slide section along a predetermined direction. The first slide section slides, by being driven by the driving device, along the predetermined direction on an inner wall surface having the first opening of the liquid chamber, and changes, by changing an area where the first opening and the first through-hole overlap with each other, an opening degree of the first opening, and the first slide section makes linear contact with the inner wall surface having the first opening along the predetermined direction.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: March 31, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Keigo Sugai
  • Patent number: 10603913
    Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: March 31, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kyohei Naito, Shohei Koide, Jiro Yamamoto
  • Patent number: 10580960
    Abstract: A piezoelectric driving device includes a vibrating plate, a first electrode, a piezoelectric layer, a second electrode layer provided above the vibrating plate. An active section is formed in a portion where the first electrode layer, the piezoelectric layer, and the second electrode layer overlap one another. The active section has a longitudinal direction and a latitudinal direction in plan view. At both ends in the latitudinal direction, ends of the first electrode layer are disposed in the same positions as ends of the wiring layer or further on the outer side than the ends, ends of the second electrode layer are disposed in the same positions as the ends of the wiring layer or further on the inner side than the ends, and the ends of the first electrode layer are disposed further on the outer side than the ends of the second electrode layer.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: March 3, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Tomokazu Kobayashi, Daisuke Yamada
  • Patent number: 10573463
    Abstract: An electronic device includes a capacitor that is configured with a first electrode layer, an insulating layer, and a second electrode layer being formed in the order listed herein. At least one end of the capacitor is defined by an end of the second electrode layer. The insulating layer is provided so as to extend to a non-element region that is on the outside of one end of the capacitor. The insulating layer under the non-element region is formed thinner than the insulating layer under the capacitor. A difference between the thickness of the insulating layer under the non-element region and the thickness of the insulating layer under the capacitor is equal to or less than 50 nm.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: February 25, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Ichiro Asaoka, Koichi Morozumi, Masato Shimada, Akira Kuriki
  • Patent number: 10569541
    Abstract: A liquid ejection head includes a first substrate and a second substrate. The first substrate includes a pressure chamber communicating with an ejection port that ejects liquid, a diaphragm that forms part of a wall constituting the pressure chamber, and at least one piezoelectric element configured to generate energy for displacing the diaphragm to eject liquid through the ejection port. The second substrate has a cavity containing the piezoelectric element. The first substrate and the second substrate are joined together with an adhesive. A liquid repellent portion surrounding the piezoelectric element is disposed on a surface of the first substrate where the piezoelectric element is disposed.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: February 25, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shinichiro Watanabe
  • Patent number: 10566944
    Abstract: Layer structures for RF filters can be fabricated using rare earth oxides and epitaxial aluminum nitride, and methods for growing the layer structures. A layer structure can include an epitaxial crystalline rare earth oxide (REO) layer over a substrate, a first epitaxial electrode layer over the crystalline REO layer, and an epitaxial piezoelectric layer over the first epitaxial electrode layer. The layer structure can further include a second electrode layer over the epitaxial piezoelectric layer. The first electrode layer can include an epitaxial metal. The epitaxial metal can be single-crystal. The first electrode layer can include one or more of a rare earth pnictide, and a rare earth silicide (RESi).
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: February 18, 2020
    Assignee: IQE plc
    Inventors: Rodney Pelzel, Rytis Dargis, Andrew Clark, Howard Williams, Patrick Chin, Michael Lebby
  • Patent number: 10549535
    Abstract: A head unit includes a circuit board, a casing, and a head module including: a nozzle plate and a liquid-passage defining member stacked on each other in a stacking direction; a drive element; and an interconnect member. A distance between a first end and a second end of the nozzle plate which are spaced in a first direction is greater than a distance between a third end and a fourth end of the nozzle plate which are spaced in a second direction. A distance between a seventh end and an eighth end of the circuit board which are spaced in the stacking direction is greater than a distance between a fifth end and a sixth end of the circuit board which are spaced in the first direction.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: February 4, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shogo Mori, Motohiro Tsuboi
  • Patent number: 10544319
    Abstract: An inkjet printing ink according to the present disclosure contains a pigment, acrylic particles, an alcohol, and water. The alcohol contains at least a trihydric alcohol. A ratio of an amount of the alcohol to a whole mass of the inkjet printing ink is 30% by mass or less. A ratio of an amount of the acrylic particles to a mass of the pigment is 5% by mass to 100% by mass. Further, the inkjet printing ink has negative skin irritation.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: January 28, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Haruka Kusukame, Masayo Shinoda, Tomoki Masuda
  • Patent number: 10532572
    Abstract: An inkjet printhead having a fluidic chamber substrate, the fluidic chamber substrate having at least two droplet units provided in an array therein, the droplet units comprising: a fluidic chamber, a first fluidic port provided at a first surface of the fluidic chamber substrate, wherein the first fluidic port is in fluidic communication with the fluidic chamber, a nozzle formed in a nozzle layer provided at a second surface of the fluidic chamber substrate; and a vibration plate provided at the first surface of the fluidic chamber substrate, the vibration plate comprising an actuator for effecting pressure fluctuations within the fluidic chamber; and wherein the droplet units are arranged adjacent each other about an axis extending substantially in a width direction of the droplet units, wherein the first fluidic ports of the droplet units are staggered a first stagger offset distance from each other substantially in a length direction of the droplet units, and wherein a wiring layer extends over the first
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: January 14, 2020
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Robert Errol McMullen, Peter Mardilovich
  • Patent number: 10532562
    Abstract: A droplet ejection device has a nozzle head with a plurality of ejection units, each of which includes a nozzle, a duct connected to the nozzle, and an electromechanical transducer arranged to create a pressure wave in a liquid in the duct so as to expel a droplet of the liquid from the nozzle. The device further includes an electronic control circuit arranged to apply control signals to the transducers and to receive detection signals that are generated in the transducers in response to the transducer being exposed to pressure fluctuations. The nozzle head includes a reference duct which has an electromechanical transducer serving as a reference transducer. The control circuit is arranged to subtract a detection signal of the reference transducer from a detection signal of at least one of the ejection units.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: January 14, 2020
    Assignee: OCE-TECHNOLOGIES B.V.
    Inventors: Amol A. Khalate, Johannes M. M Simons, Marko Mihailovic
  • Patent number: 10525702
    Abstract: A composite substrate has a first substrate having a surface; a second substrate having a first surface and a second surface opposite to the first surface in a thickness direction and facing the surface of the first substrate with a gap therebetween, the second substrate extending in a longitudinal direction perpendicular to the thickness direction, the second substrate having first and second ends in the longitudinal direction, and a driver circuit being provided on the first surface; a flexible print circuit board has a portion bonded a position on the first substrate between the first end and the driver circuit, the bonding region being defined on the first surface, and a support member positioned between the surface of the first substrate and the second surface of the second substrate, the support member overlapping all of the bonding region, as viewed in the thickness direction.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: January 7, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Keita Hirai
  • Patent number: 10518533
    Abstract: A head module includes a head, a driver IC, a heat spreader, a holder and a heat insulator. The head ejects liquid in response to the driver IC. The heat spreader is in thermal communication with the driver IC. The holder supports the head. The heat insulator is located to thermally isolate the heat spreader and the holder.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: December 31, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Susumu Sakuma
  • Patent number: 10518539
    Abstract: A liquid ejecting apparatus includes a flow path member including a common liquid chamber communicating with each of a plurality of nozzles formed in a nozzle surface, via a corresponding pressure generating chamber, a supply port provided in an inner wall of the common liquid chamber to supply a liquid to the common liquid chamber, a discharge port provided in a ceiling of the common liquid chamber to discharge an air bubble from the common liquid chamber, and a wall continuously extending from the inner wall, and including a surface opposing the discharge port.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: December 31, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Atsushi Muto, Masahiko Sato, Hiroyuki Hagiwara
  • Patent number: 10507649
    Abstract: A liquid discharge apparatus includes a piezoelectric element that has a first electrode, a piezoelectric body, and a second electrode, a first switch that is capable of switching whether to supply a drive signal for driving the piezoelectric element to the first electrode, and a second switch that is arranged electrically in parallel with the piezoelectric element and is capable of switching whether to electrically connect the first electrode and the second electrode to each other.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: December 17, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Keiichi Tada
  • Patent number: 10507648
    Abstract: A liquid ejecting head includes: a piezoelectric element driven with a drive signal; a switch circuit which is provided on a circuit substrate; a pressure chamber which is filled with liquid and changes pressure inside in accordance with the drive by the piezoelectric element; and a reserve chamber which reserves the liquid to be supplied to the pressure chamber. The piezoelectric element is provided in a sealed space defined by a plurality of members including the circuit substrate. The reserve chamber includes a first flow channel and a second flow channel. A first end of the first flow channel communicates with a first end of the second flow channel. A second end of the first flow channel communicates with a second end of the second flow channel. The circuit substrate and switch circuit are provided between the first flow channel and the second flow channel.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: December 17, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Motonori Chikamoto, Toru Matsuyama
  • Patent number: 10507658
    Abstract: A liquid ejection apparatus includes: channel rows each including individual channels; piezoelectric elements each constituted by an individual electrode, a common electrode, and a piezoelectric layer; and individual wires respectively extending from the individual electrodes to an outside connecting region, connectable to an external circuit board, and each having a contact connectable to an individual terminal of the external circuit board. A portion of each of the channel rows has an intra-row void between adjacent two of the individual channels. Each of the individual wires extends to a portion of the outside connecting region which corresponds to one of the individual channels. A first common wire extending from the common electrode and connectable to a common terminal of the external circuit board is provided at a portion of the outside connecting region which corresponds to the intra-row void.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: December 17, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Rui Wang
  • Patent number: 10500854
    Abstract: An actuator component for a droplet deposition head that includes: a plurality of fluid chambers arranged side-by-side in an array, with certain of the fluid chambers being firing chambers, each of which is provided with at least one piezoelectric actuating element for causing droplet ejection from a nozzle for that firing chamber; and a plurality of non-actuable walls, each of which is formed of piezoelectric material and bounds at least one of the firing chambers.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: December 10, 2019
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Angus Condie, Nicholas Marc Jackson, Simon James Hubbard
  • Patent number: 10500861
    Abstract: A method for manufacturing a liquid ejection head including providing a negative first photosensitive resin layer on the substrate, forming a pattern of the flow path by selectively exposing the first photosensitive resin layer, providing a negative second photosensitive resin layer on the first photosensitive resin layer, providing a negative third photosensitive resin layer on the second photosensitive resin layer, forming a pattern of the ejection port by selectively exposing the second and third photosensitive resin layers, developing the first, second, and third photosensitive resin layers, irradiating an activation energy line on at least the third photosensitive resin layer after the developing, and heat curing the first, second, and third photosensitive resin layers after the irradiating of the activation energy line.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: December 10, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kunihito Uohashi, Shingo Nagata, Kenji Fujii, Jun Yamamuro, Koji Sasaki, Keiji Matsumoto, Seiichiro Yaginuma, Ryotaro Murakami, Tomohiko Nakano, Masataka Nagai
  • Patent number: 10500852
    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.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: December 10, 2019
    Assignee: SII PRINTEK INC.
    Inventors: Yuichiro Hamano, Kazuyoshi Tominaga, Takanori Koyano, Atsushi Kozuki, Kenji Suzuki, Masaki Miyagi
  • Patent number: 10493756
    Abstract: Devices and method for performing temperature measurements in a printhead. In one embodiment, a printhead includes at least one row of jetting channels configured to jet droplets of a print fluid using piezoelectric actuators. A drive circuit includes an input voltage generator that applies a step voltage to a piezoelectric actuator of a jetting channel, and an output voltage detector that detects an output voltage across the piezoelectric actuator over time in response to the step voltage. The drive circuit also includes a temperature detector that determines a voltage response to the step voltage at the piezoelectric actuator based on the output voltage over time, and determines a temperature measurement for the piezoelectric actuator based on the voltage response of the piezoelectric actuator.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: December 3, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Nishimura, Shogo Nobumori
  • Patent number: 10493753
    Abstract: An example device in accordance with an aspect of the present disclosure includes modules to generate an input signal, apply the input signal to an ink sample to obtain an ink signal, compare the ink signal to a reference value, and identify whether the ink signal is consistent with an ink signature. A module may be contained on an inkjet printhead die.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: December 3, 2019
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Daryl E. Anderson, Eric T. Martin, Peter James Fricke, James Michael Gardner
  • Patent number: 10471715
    Abstract: There is provided a liquid discharge apparatus which includes a channel substrate having a nozzle, a pressure chamber which communicates with the nozzle, an actuator which covers the pressure chamber, and a contact point that is electrically connected to the actuator, and a circuit board which has wires that are to be electrically connected to contact points, and which is adhered to the channel substrate. The channel substrate includes an adhesive wall which is provided with contact points, and which has a surface to which an adhering portion of the circuit board to be adhered to the channel substrate, is adhered, and further includes a wall portion which is provided with a cavity on a side of the adhesive wall, opposite to the surface, and which demarcates the cavity on a side opposite to the surface, of the adhesive wall, and the adhering portion is facing the cavity and the wall portion.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: November 12, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Hideki Hayashi, Taisuke Mizuno, Keita Hirai, Yuichi Ito
  • Patent number: 10464322
    Abstract: A piezoelectric device used in a liquid ejecting head that ejects liquid from a nozzle includes a flow path forming substrate in which an individual liquid chamber that communicates with the nozzle, and a liquid supply chamber that communicates with the individual liquid chamber are formed, a vibration plate formed at a position corresponding to the individual liquid chamber and the liquid supply chamber of the flow path forming substrate, a plurality of liquid supply ports formed in the liquid supply chamber, and a piezoelectric element including a first electrode, a piezoelectric layer, and a second electrode, the piezoelectric element being formed at a position on the vibration plate corresponding to the individual liquid chamber. A metal layer is stacked at a position on the vibration plate corresponding to the liquid supply chamber. The liquid supply ports are provided so as to penetrate the vibration plate and the metal layer.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: November 5, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Masao Nakayama, Motoki Takabe, Eiju Hirai, Shiro Yazaki
  • Patent number: 10442188
    Abstract: A liquid ejecting head may include a driver element that ejects liquid in a pressure chamber from a nozzle, a liquid storage chamber that stores liquid to be supplied to the pressure chamber, and a driver IC that drives the driver element. At least a part of the liquid storage chamber overlaps with both the driver element and the driver IC when viewed in plan.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: October 15, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Shunsuke Watanabe, Fumiya Takino, Shingo Tomimatsu