Drop-on-demand Patents (Class 347/54)
  • Patent number: 11148422
    Abstract: A liquid ejecting head includes a flow passage member and an energy generating element. The flow passage member includes an individual flow passage including a nozzle and a pressure generating chamber communicating with the nozzle, a supply-side common flow passage, and a drain-side common flow passage. The energy generating element effects a pressure change in the liquid in the pressure generating chamber to discharge the liquid from the nozzle. The individual flow passage includes a supply-side individual flow passage between the supply-side common flow passage and the nozzle and a drain-side individual flow passage between the nozzle and the drain-side common flow passage. A second partition wall that separates a plurality of the drain-side individual flow passages from each other is thicker than a first partition wall that separates a plurality of the supply-side individual flow passages from each other.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: October 19, 2021
    Assignee: Seiko Epson Corporation
    Inventor: Akira Miyagishi
  • Patent number: 11123989
    Abstract: When the metal constituting a metal layer becoming a diffusion prevention layer is defined as a first metal and the metal constituting a connection terminal is defined as a second metal, in a potential-pH diagram for the first metal-H2O system, the first metal is present in a passivation area or an insensitive area at a potential of the difference between the standard electrode potentials of the first metal and the second metal in a pH range of 1 to 14.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: September 21, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Teruo Ozaki
  • Patent number: 11117322
    Abstract: In one example, a non-transitory processor readable medium with instructions thereon that when executed cause an additive manufacturing machine to inhibit build material in an overlying layer of build material from fusing with a first slice formed in an underlying layer of build material.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: September 14, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Hou T. Ng, Alejandro Manuel De Pena
  • Patent number: 11104118
    Abstract: An apparatus changes the temperature of thermoplastic material in an extruder head to reduce the time for producing an object. The apparatus includes a cooling device located near the one or more nozzles of the extruder head to change the temperature of the thermoplastic material extruded by the extruder head. The apparatus cools the thermoplastic material to enhance the formation of exterior object features. A heater can also be positioned near the nozzle zone to heat the thermoplastic material to reduce the time for raising the viscosity of the thermoplastic material for forming interior regions of the object.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: August 31, 2021
    Assignee: Xerox Corporation
    Inventors: David A. Mantell, Peter J. Nystrom, Christopher G. Lynn
  • Patent number: 11077662
    Abstract: There is provided a liquid discharge head including: a plurality of pressure chambers aligned in a first direction so as to form first and second pressure chamber groups arranged side by side in a second direction crossing the first direction; a first common channel communicating with pressure chambers constructing the first pressure chamber group; a second common channel communicating with pressure chambers constructing the second pressure chamber group; a first connecting channel connecting one end in the first direction of the first common channel and one end in the first direction of the second common channel; and a second connecting channel connecting the other end in the first direction of the first common channel and the other end in the first direction of the second common channel. Each of the first and second connecting channels overlaps, in a third direction, with any one of the plurality of pressure chambers.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: August 3, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Taisuke Mizuno
  • Patent number: 11065868
    Abstract: A jetting device configured to jet one or more droplets of a viscous medium through a nozzle may include an acoustic transducer configured to emit an acoustic signal that transfers acoustic waves into at least a portion of the viscous medium located in a viscous medium conduit a viscous medium conduit configured to direct a flow of the viscous medium to an outlet of the nozzle. The acoustic signal may be an ultrasonic signal. The acoustic signal may adjust one or more rheological properties of the viscous medium, based on acoustic actuation. The acoustic transducer may be implemented by an actuator of the device that is configured to move through an eject chamber to cause viscous medium to be jetted through the outlet of the nozzle as one or more droplets.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: July 20, 2021
    Assignee: Mycronic AB
    Inventors: Gustaf Martensson, Jesper Sallander
  • Patent number: 11065883
    Abstract: A die may, in an example, include at least one cross-die recirculation channel formed into the die to recirculate an amount of printing fluid therethrough, the cross-die recirculation channel including a first-sized inlet port and a first-sized outlet port formed on a first side of the die, at least one chamber recirculation channel formed into the die and fluidically coupled to the cross-die recirculation channel to recirculate an amount of printing fluid therethrough, the chamber recirculation channel including a second-sized inlet port and a second-sized outlet port, at least one pump formed within the chamber recirculation channel to recirculate the amount of printing fluid therethrough.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: July 20, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chien-Hua Chen, Jeffrey R. Pollard, Michael W. Cumbie, Si-Lam Choy
  • Patent number: 11052658
    Abstract: A head module includes a pressure chamber, a piezoelectric member, a supply manifold, a return manifold, and a damper portion. The pressure chamber is configured to hold liquid therein and in fluid communication with a nozzle orifice. The piezoelectric member is configured to apply pressure to liquid held in the pressure chamber. The supply manifold is in fluid communication with the pressure chamber and configured to allow liquid to flow into the pressure chamber therefrom. The return manifold is in fluid communication with the pressure chamber and configured to allow liquid not ejected from the nozzle orifice to flow thereinto. The damper portion is positioned between the supply manifold and the return manifold when viewed in plan from a nozzle surface of the head module. The nozzle surface has the nozzle orifice defined therein. The damper portion includes a particular plate having a particular recessed portion.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: July 6, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Keita Hirai, Shohei Koide, Keita Sugiura, Hiroshi Katayama
  • Patent number: 11040530
    Abstract: In one example in accordance with the present disclosure, a fluidic system is described. The fluidic system includes a fluidic die. The fluidic die includes a substrate in which a number of fluid chambers are formed. Each fluid chamber includes a fluid actuator disposed within the fluid chamber. A number of actuator sensors are disposed on the substrate to output at least one value indicative of a sensed characteristic of fluid actuators. A number of substrate temperature sensors are also disposed on the substrate to sense a temperature for the substrate. An actuator evaluation device of the fluidic system determines a state of the fluid actuator based at least in part on the at least one value and at least one correction value associated with the temperature sensed by the number of substrate temperature sensors.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: June 22, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Daryl E. Anderson, James A. Feinn, Eric Martin, James Michael Gardner
  • Patent number: 10994535
    Abstract: A marking system includes a valve body including an orifice plate including multiple orifices and multiple micro-valves. Each micro-valve includes an actuating beam movable from a closed position in which a corresponding one of the orifices is sealed by a portion of the actuating beam such that the micro-valve is closed, into a peak position in response to application of a control signal. A controller is configured to generate a control signal for each of the actuating beams, each control signal including a drive pulse having a predetermined voltage such that the actuating beam moves from the closed position into the peak position in which the corresponding orifice is open and returns to the closed position in a characteristic period, wherein the drive pulse has a duration that substantially corresponds to the characteristic period such that the actuating beam is in the closed position after the drive pulse is complete.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: May 4, 2021
    Assignee: Matthews International Corporation
    Inventors: William A. Buskirk, Steven E. Flego, Charles C. Haluzak, John Whitlock, Eric R. Miller, Ken Trueba, Jeff Hess
  • Patent number: 10981374
    Abstract: An ejector device that includes one or more ejectors comprises an ejector layer that spans at least one hollow area. The ejector layer has a first surface and an opposing second surface arranged to receive a viscous material with viscosity between 20 and 50,000 centipoise. The ejector layer includes a radiation absorber material configured to thermally expand without phase transition in response to heating by activation radiation transmitted to the first surface. Thermal expansion of the ejector layer causes displacement of the ejector layer and ejection of the material from the second surface of the ejector layer.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: April 20, 2021
    Assignee: Palo Alto Research Center Incorporated
    Inventors: David K. Biegelsen, Timothy D. Stowe, Mandana Veiseh
  • Patent number: 10960666
    Abstract: According to an embodiment of the present disclosure, to improve a layout efficiency of an element substrate to be integrated in a printhead and reduce a production cost of the element substrate, a driving method and a size of a first driver transistor used for driving a first heater for ink circulation and a driving method and a size of a second driver transistor used for driving a second heater for discharging ink to print are optimized, respectively. More specifically, the first driver transistor and the second driver transistor have multi-finger configurations, gate widths of the multi-finger configurations are equal to each other, and the number of fingers forming each first driver transistor is different from the number of fingers forming each second driver transistor.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: March 30, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryo Kasai, Kazuhiro Yamada, Takuro Yamazaki, Yoshiyuki Nakagawa, Toru Nakakubo
  • Patent number: 10953655
    Abstract: A liquid ejection head includes a laminated body including a first plate having a plurality of ejection nozzles for ejecting a liquid and made from a resin material and a second plate having a plurality of through-holes communicating with the corresponding ejection nozzles and made from a metal material. The laminated body has a plurality of projection parts formed along the array direction Y of the ejection nozzles and having a curved dome shape projecting in the direction from the second plate to the first plate. The second plate has a plurality of through-slits formed adjacent to the projection parts.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: March 23, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hiroyuki Shimoyama
  • Patent number: 10946592
    Abstract: A method and apparatus for resistive heating usable in composite-based additive manufacturing is disclosed. The method includes providing a prepared stack of substrate sheets, placing the stack between electrode assemblies of a compression device, applying a current to thereby heat the stack to a final temperature to liquefy applied powder, compressing the stack to a final height, cooling the stack, and removing the cooled, compressed stack from the compression device. The apparatus comprises at least two plates, a power supply for providing current, a first electrode assembly and a second electrode assembly.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: March 16, 2021
    Assignee: Impossible Objects, Inc.
    Inventors: Robert Swartz, John Bayldon, Buckley Crist, Eugene Gore
  • Patent number: 10913275
    Abstract: There is provided a method of manufacturing a liquid discharge head, including: forming a stacked body having a structure and a protective member stacked on the structure, providing a first mask on an upper surface of the protective member to cover a through hole; forming a protective film by an atomic layer deposition on a surface defining a liquid flow channel of the stacked body provided with the first mask; and removing the first mask after forming the protective film.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: February 9, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Toru Kakiuchi, Yasuo Kato, Yuichi Ito
  • Patent number: 10906309
    Abstract: A liquid discharge head includes a stacked body formed by plates stacked in a first direction, and having a liquid channel. The liquid channel includes: individual channels which include nozzles and pressure chambers communicating with the nozzles, respectively, and which are aligned in a second direction orthogonal to the first direction; a first common channel extending in the second direction and communicating with the individual channels; a second common channel extending in the second direction and communicating with the individual channels; first throttles each connecting one of the individual channels and the first common channel; and second throttles each connecting one of the individual channels and the second common channel. The plates include: a nozzle plate having the nozzles; a pressure chamber plate having the pressure chambers; a first common channel plate having the first common channel; and a second common channel plate having the second common channel.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: February 2, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Hideki Hayashi
  • Patent number: 10906305
    Abstract: A liquid ejection head includes, a multilayer wiring layer having a plurality of wiring layers laid one on the other and an insulating layer enveloping the plurality of wiring layers, an ejection orifice forming member arranged on one of the oppositely disposed surfaces of the multilayer wiring layer and having an ejection orifice formed therethrough to eject liquid and a through-hole electrode arranged in a through hole running through the multilayer wiring layer between the one and the other surfaces of the multilayer wiring layer. The plurality of wiring layers includes a first wiring layer having a surface located closest to the ejection orifice forming member and the through-hole electrode is held in contact with at least one surface of the plurality of wiring layers different from the surface of the first wiring layer and is electrically connected to the plurality of wiring layers.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: February 2, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takayuki Teshima
  • Patent number: 10894410
    Abstract: A method of manufacturing a liquid ejection head includes forming a resist film on a first surface of a light-transmitting support having the first surface and a second surface being a back surface of the first surface; bonding a back side of the surface of the resist film to the support side on a substrate having a through hole so as to block the through hole; exposing the resist film with light transmitted from the second surface to the first surface of the support and forming a portion which is removable with a dissolving liquid and a portion which remains against the dissolving liquid on the resist film; immersing the substrate and the exposed resist film in the dissolving liquid, allowing the dissolving liquid to enter the through hole, and removing the removable portion; and peeling the support from the resist film from which the removable portion has been removed.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: January 19, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kazuhiro Asai
  • Patent number: 10889113
    Abstract: A recording element board has a plurality of heat-generating resistor elements arranged in a row and each of the plurality of heat-generating resistor elements comprises a heat-generating resistor layer and first and second pairs of electrodes connected to the heat-generating resistor layer. The first and second pairs of electrodes contact the heat-generating resistor layer at the opposite surfaces thereof to each other. The first pair of electrodes is formed as vias, while each surface of the second pair of electrodes is inclined so as to gradually reduce the thickness thereof toward the end thereof.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: January 12, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryoji Oohashi, Tsubasa Funabashi, Koichi Omata, Hideo Tamura, Kousuke Kubo, Yohei Osuki
  • Patent number: 10870287
    Abstract: A method of inkjet printing includes the steps of: (i) delivering ink to a printhead manifold having a longitudinal ink channel, one or printhead chips mounted to a floor of the printhead manifold and in fluid communication with the longitudinal ink channel, and a plurality of sealed air cavities positioned over the longitudinal ink channel for dampening pressure fluctuations in the ink; (ii) printing from the printhead chips; and (iii) replenishing the air cavities with air.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: December 22, 2020
    Inventors: Garry Jackson, Norman Berry, Michael Hudson, Brian Brown, Samuel Mallinson, Geordie McBain
  • Patent number: 10857793
    Abstract: A liquid discharge head includes nozzles, pressure chambers, individual supply channels, individual collection channels common supply channel branches, and common collection channel branches. The common supply channel branches communicate with two or more of the individual supply channels. The common collection channel branches communicate with two or more of the individual collection channels. The nozzles are two-dimensionally arranged in a matrix and arranged in at least a first direction and a second direction intersecting with the first direction at an inclination. The common supply channel branches and the common collection channel branches extend in the first direction. The common supply channel branches and the common collection channel branches are alternately arranged in the second direction.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: December 8, 2020
    Assignee: Ricoh Company, Ltd.
    Inventor: Masaki Kato
  • Patent number: 10857796
    Abstract: A liquid ejection head, including: first supply passages and first discharge passages extending in a first direction and arranged in a second direction intersecting the first direction; and a second supply passage extending in the second direction and communicating with the first supply passages to supply the liquid thereto and a second discharge passage extending in the second direction and communicating with the first discharge passages to discharge the liquid therefrom, wherein (A) a cross-sectional area of the second supply passage on a plane orthogonal to the second direction at a first portion thereof differs from that at a second portion thereof spaced apart from the first portion in the second direction and/or (B) a cross-sectional area of the second discharge passage on the plane at a first portion thereof differs from that at a second portion thereof spaced apart from the first portion in the second direction.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: December 8, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Katsumi Kakamu
  • Patent number: 10850516
    Abstract: A head includes a first flow path forming member in which a first flow path communicating with a nozzle opening is formed, a sealing member which seals an opening of the first flow path, and a second flow path forming member which has a second flow path to supply a liquid to the first flow path. A communication portion of the first flow path communicates with a communication portion of the second flow path via a communication port of the sealing member interposed therebetween. The sealing member includes a diaphragm layer which forms one surface of the first flow path and a resin layer laminated on the diaphragm layer, and at least a part of an inside wall of the communication port is covered with a resin cover layer formed from a second resin different from a first resin which forms the resin layer.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: December 1, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Noriaki Okazawa, Shunsuke Watanabe
  • Patent number: 10850511
    Abstract: A fluid ejection device includes a fluid slot, a first fluid ejection chamber communicated with the fluid slot and including a first drop ejecting element, a second fluid ejection chamber communicated with the fluid slot and including a second drop ejecting element, a fluid circulation path communicated with the first fluid ejection chamber and the second fluid ejection chamber, and a fluid circulating element within the fluid circulation path.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: December 1, 2020
    Inventors: Alexander Govyadinov, Tsuyoshi Yamashita, Erik D. Torniainen, Nicholas McGuinness, David P. Markel
  • Patent number: 10759168
    Abstract: The present disclosure provides supports for microfluidic die that allow for nozzles of the microfluidic die to be on a different plane or face a different direction from electrical contacts on the same support. This includes a rigid support having electrical contacts on a different side of the rigid support with respect to a direction of ejection of the nozzles, and a semi-flexible support or semi-rigid support that allow the electrical contacts to be moved with respect to a direction of ejection of the nozzles. The semi-flexible and semi-rigid supports allow the die to be up to and beyond a 90 degree angle with respect to a plane of the electrical contacts. The different supports allow for a variety of positions of the microfluidic die with respect to a position of the electrical contacts.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: September 1, 2020
    Assignees: STMICROELECTRONICS S.r.l., STMICROELECTRONICS, INC., STMICROELECTRONICS INTERNATIONAL N.V.
    Inventors: Simon Dodd, David S. Hunt, Joseph Edward Scheffelin, Dana Gruenbacher, Stefan H. Hollinger, Uwe Schober, Peter Janouch
  • Patent number: 10759169
    Abstract: The present disclosure provides supports for microfluidic die that allow for nozzles of the microfluidic die to be on a different plane or face a different direction from electrical contacts on the same support. This includes a rigid support having electrical contacts on a different side of the rigid support with respect to a direction of ejection of the nozzles, and a semi-flexible support or semi-rigid support that allow the electrical contacts to be moved with respect to a direction of ejection of the nozzles. The semi-flexible and semi-rigid supports allow the die to be up to and beyond a 90 degree angle with respect to a plane of the electrical contacts. The different supports allow for a variety of positions of the microfluidic die with respect to a position of the electrical contacts.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: September 1, 2020
    Assignees: STMICROELECTRONICS S.r.l., STMICROELECTRONICS, INC., STMICROELECTRONICS INTERNATIONAL N.V.
    Inventors: Simon Dodd, David S. Hunt, Joseph Edward Scheffelin, Dana Gruenbacher, Stefan H. Hollinger, Uwe Schober, Peter Janouch
  • Patent number: 10730292
    Abstract: A liquid discharge head includes a plurality of nozzles, a plurality of individual liquid chambers, a common liquid chamber, a deformable damper, and a damper chamber. The plurality of nozzles is arrayed in a nozzle array direction, to discharge liquid. The plurality of individual liquid chambers is communicated with the plurality of nozzles. The common liquid chamber supplies liquid to the plurality of individual liquid chambers. The deformable damper constitutes part of a wall face of the common liquid chamber. The damper chamber is disposed along the nozzle array direction with the damper interposed between the damper chamber and the common liquid chamber. The damper chamber extends to an outer area in the nozzle array direction than an individual liquid chamber of the plurality of individual liquid chambers at each end in the nozzle array direction.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: August 4, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiko Kohda, Satoru Tobita, Ryo Kasahara, Ryohta Matsufuji, Norimasa Sohgawa
  • Patent number: 10730299
    Abstract: There is provided a method for manufacturing a liquid discharge head including a liquid discharge head substrate and a flow path forming member, the liquid discharge head substrate having a base, a pressure generation portion provided at a front surface of the base to generate pressure for discharging a liquid, and a supply port for supplying the liquid to the pressure generation portion, and the flow path forming member forming a flow path for feeding the liquid supplied from the supply port to the pressure generation portion. The method includes removing a sacrificial layer by etching the base from a back surface of the base, in a state in which an end covering portion of a cover layer for covering the sacrificial layer is covered with the resin layer. The method suppresses formation of a crack in the end covering portion that covers the end portion of the sacrificial layer.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: August 4, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuji Tamaru, Yuichiro Akama, Naoko Tsujiuchi, Sayaka Seki, Yasuaki Kitayama, Yusuke Hashimoto, Takanobu Manabe
  • Patent number: 10717273
    Abstract: A liquid ejection head includes an ejection orifice through which a liquid is ejected, a first liquid flow path which is in communication with the ejection orifice and through which the liquid flows, a second liquid flow path which is in communication with the ejection orifice on the opposite side of the first liquid flow path with respect to the ejection orifice 12 and through which the liquid flows, a first electrode positioned in the first liquid flow path 13, and a second electrode which is positioned in the second liquid flow path and generates an electro-osmotic flow in the liquid together with the first electrode.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: July 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Nakagawa, Kazuhiro Yamada, Noriyasu Nagai, Takuro Yamazaki, Toru Nakakubo, Akira Yamamoto, Masafumi Morisue, Ryo Kasai
  • Patent number: 10632749
    Abstract: A fluid ejection device includes a fluid slot, a plurality of fluid ejection chambers communicated with the fluid slot, a plurality of drop ejecting elements one of each within one of the fluid ejection chambers, a plurality of fluid circulation channels each communicated with the fluid slot and one or more of the fluid ejection chambers, and a plurality of fluid circulating elements each communicated with one or more of the fluid circulation channels. The fluid circulating elements are to provide intermittent circulation of fluid from the fluid slot through the one or more of the fluid circulation channels and the one or more of the fluid ejection chambers.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: April 28, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alexander Govyadinov, Chris Bakker
  • Patent number: 10611149
    Abstract: There is provided a liquid jetting apparatus, including: a first pressure chamber and a second pressure chamber arranged in a first direction; a first insulating film covering the first and second pressure chambers; a first piezoelectric element arranged to face the first pressure chamber with the first insulating film being intervened therebetween; a second piezoelectric element arranged to face the second pressure chamber with the first insulating film being intervened therebetween; a trace arranged between the first and the second piezoelectric elements adjacent to each other in the first direction; and a second insulating film covering the trace. An end, in the first direction, of a part of the second insulating film covering the trace between the first piezoelectric element and the second piezoelectric element is positioned inside an end of a partition wall partitioning the first pressure chamber and the second pressure chamber.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: April 7, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Taiki Tanaka, Keita Hirai
  • Patent number: 10603915
    Abstract: A flow passage structure includes a flow passage member that constitutes a portion of a wall surface of a liquid storage chamber; a flexible film that is laminated on the flow passage member and constitutes a portion of the wall surface of the liquid storage chamber; a sealing body that is laminated on a side opposite to the flow passage member with the flexible film interposed therebetween and forms a space in which the flexible film is exposed; communication passages that are formed in a region around the liquid storage chamber in the sealing body and causes the space to communicate with an atmosphere in a case where the sealing body is seen in a plan view from a direction in which the flow passage member and the flexible film are laminated; and a support portion that supports the flexible film in the communication passage.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: March 31, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Hiroki Miyajima, Kenichiro Matsuo
  • Patent number: 10589273
    Abstract: Embodiments of present application are directed to microfluidic devices and particularly digital micro-plastic fluidic devices that are specifically designed to prevent sample contamination during sample processing, methods of manufacturing the same, and methods to improve sample analysis process by preventing sample contamination.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: March 17, 2020
    Assignee: ILLUMINA, INC.
    Inventors: Allen E Eckhardt, Rigo Pantoja, Sean M Ramirez, Petr Capek, Edwin Li
  • Patent number: 10576741
    Abstract: An ejection energy generating element is provided in a first pressure chamber so that a liquid in the first pressure chamber is ejected from an ejection port. A pressurization energy generating element is provided in a second pressure chamber so that the liquid in the first pressure chamber is pressurized. An opening area of a hole open to the second pressure chamber is smaller than an opening area of the ejection port.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: March 3, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akiko Hammura, Yoshiyuki Nakagawa
  • Patent number: 10569544
    Abstract: According to examples, a multi-layered nozzle fluid ejection device may include a first nozzle layer including a first nozzle layer thickness and a first nozzle layer orifice, and a second nozzle layer including a second nozzle layer thickness and a second nozzle layer orifice. The first nozzle layer orifice may include a first nozzle layer orifice dimension that is different than a second nozzle layer orifice dimension of the second nozzle layer orifice.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: February 25, 2020
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventor: Sean P McClelland
  • Patent number: 10562301
    Abstract: A liquid ejection head includes a laminated body including a first plate having a plurality of ejection nozzles for ejecting a liquid and made from a resin material and a second plate having a plurality of through-holes communicating with the corresponding ejection nozzles and made from a metal material. The laminated body has a plurality of projection parts formed along the array direction Y of the ejection nozzles and having a curved dome shape projecting in the direction from the second plate to the first plate. The second plate has a plurality of through-slits formed adjacent to the projection parts.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: February 18, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hiroyuki Shimoyama
  • Patent number: 10562302
    Abstract: A liquid ejecting head includes a flow path substrate in which a nozzle through which liquid is ejected, a pressure chamber that communicates with the nozzle and a liquid supply chamber that communicates with the pressure chamber are formed, a vibration plate that is installed on the flow path substrate and overlaps with the pressure chamber and the liquid supply chamber, and a piezoelectric element that is formed on the vibration plate on an opposite side from the pressure chamber, in which a portion of the vibration plate overlapping with the pressure chamber is thinner in a thickness than a portion of the vibration plate overlapping with the liquid supply chamber.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: February 18, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Naoto Yokoyama, Masao Nakayama, Eiju Hirai
  • Patent number: 10518529
    Abstract: The liquid discharge device includes a plurality of volume changing portions and at least one blocking portion. The plurality of volume changing portions are in combination with a plurality of pressure chambers which communicate with nozzles for discharging a liquid and which have inlets through which the liquid flows into the plurality of pressure chambers. The at least one blocking portion blocks communication at the inlets. The plurality of volume changing portions are arranged in a plurality of rows spaced from one another. In a direction along the plurality of rows, the plurality of rows of volume changing portions are staggered from one another. The liquid is discharged from the nozzles by using the plurality of volume changing portions in a state in which the inlets are blocked by the at least one blocking portion.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: December 31, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Keigo Sugai
  • Patent number: 10518987
    Abstract: A conveying machine for containers, comprising at least one base module having a predetermined length according to a feed direction of the containers and at least a supporting carriage for the containers slidably mounted on said base module. The base module and carriage together define a linear motor, wherein the stator is the base module and the rotor is the carriage. The machine comprises a supporting plate for the containers, which is rotatably mounted on the carriage and means for moving the plate, which is operatively connected to the plate to rotate it on itself.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: December 31, 2019
    Assignee: MAKRO LABELLING S.R.L.
    Inventor: Simone Marcantoni
  • Patent number: 10518548
    Abstract: A liquid ejection head has a plurality of ejection modules having a recording element substrate equipped with a plurality of ejection orifices for ejecting a liquid, a plurality of first flow path members that supports at least one of the ejection modules and a second flow path member provided in common with the first flow path members and supporting the first flow path members. The first flow path members and the second flow path member are equipped with a flow path for supplying a plurality of recording element substrates with a liquid. The first flow path members are joined with the second flow path member via an adhesive layer without being brought into direct contact with the second flow path member.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: December 31, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Yamada, Shuzo Iwanaga, Seiichiro Karita, Shingo Okushima, Zentaro Tamenaga, Noriyasu Nagai, Tatsurou Mori, Akio Saito, Akira Yamamoto, Asuka Horie, Masao Furukawa, Takatsuna Aoki
  • Patent number: 10518538
    Abstract: An electric field generating unit that forms an electric field between a nozzle forming surface of a recording head and a medium support section that faces the nozzle forming surface by applying a voltage to a conductive member includes the conductive member, forms an electric field, and, during borderless recording in which ink is ejected on inside and outside of an edge of a paper sheet, applies an increased voltage in an ink discarded region outside the edge compared to a voltage applied in a recording region other than the ink discarded region.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: December 31, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Manabu Kondo, Makoto Sato
  • Patent number: 10510642
    Abstract: The present invention relates to a semiconductor device module which includes: a semiconductor device including a top electrode and a bottom electrode; a substrate on which the bottom electrode of the semiconductor device is bonded; a heat sink on which the substrate is mounted; a lead electrode through which a main current of the semiconductor device flows; an insulating case disposed to enclose the substrate; and a retainer disposed in a cantilevered manner in the insulating case, the retainer supporting the lead electrode, wherein the lead electrode has one end brazed to the top electrode of the semiconductor device, and another end side inserted into a wall of the insulating case, and the retainer is engaged on the one end of the lead electrode to restrict movement of the lead electrode.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: December 17, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Arata Iizuka, Korehide Okamoto, Natsuki Tsuji
  • Patent number: 10471717
    Abstract: A first channel member of a liquid ejection head includes a plurality of plates stacked through an adhesive. A first plate includes a second groove configuring the second common channel, and a plurality of first grooves which are communicated with the second groove from a wall surface of the second groove and individually configure a plurality of third individual channels. A second plate is bonded to a top surface of the first plate and configures an upper surface of the second common channel. The first plate includes an extension part which extends outward from the wall surface of the second groove between an end part position of one end of the second groove and a connection position closest to the end part position among connection positions of the plurality of first grooves with respect to the wall surface of the second groove.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: November 12, 2019
    Assignee: KYOCERA CORPORATION
    Inventor: Naoki Kobayashi
  • Patent number: 10471716
    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.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: November 12, 2019
    Assignee: SII PRINTEK INC.
    Inventor: Hitoshi Nakayama
  • Patent number: 10457042
    Abstract: An object of the disclosure is to provide an inkjet head that makes it possible to realize alleviation of ink-discharge malfunction due to fluid crosstalk possibly caused among multiple discharge components, and that also simultaneously makes it possible to maintain a desirable volume of discharged liquid droplets. Furthermore, another object of the disclosure is to provide an inkjet device including the inkjet head.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: October 29, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shuhei Nakatani, Futoshi Ohtsuka, Yousuke Toyofuku
  • Patent number: 10442196
    Abstract: A channel member includes an integrating channel, a plurality of common channels, a plurality of individual channels, and a plurality of ejection ports. The integrating channel extends in a first direction. The plurality of common channels extends in a second direction, is spaced apart from each other in the first direction, and is individually connected to the integrating channel. The plurality of individual channels is connected to the respective plurality of common channels. Each of the plurality of ejection ports is linked with at least one corresponding individual channel. Each of the plurality of common channels includes a first connection region connected to the plurality of individual channels, and a second connection region connected to the integrating channel. Each of the plurality of common channels includes an opening in the second connection region linked with the integrating channel, and a damper in a portion facing the opening.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: October 15, 2019
    Assignee: KYOCERA CORPORATION
    Inventor: Naoki Kobayashi
  • Patent number: 10415086
    Abstract: In one embodiment, a polymerase chain reaction (PCR) system includes a mixture chamber, a denature chamber, an annealing chamber, an extension chamber, and a product chamber, that are fluidically coupled to one another through a plurality of microfluidic channels. An inertial pump is associated with each microfluidic channel, and each inertial pump includes a fluid actuator integrated asymmetrically within its associated microfluidic channel. The fluid actuators are capable of selective activation to circulate fluid between the chambers in a controlled cycle.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: September 17, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Pavel Kornilovich, Erik D. Tornianinen, Alexander Govyadinov, David P. Markel
  • Patent number: 10406806
    Abstract: A pressure chamber of each of channels of an inkjet head has a non-rotating body shape around an axis perpendicular to a support substrate on which the pressure chamber is formed. The direction of the pressure chamber corresponding to a rotation angle from a reference position around the axis passing through the pressure chamber is defined as the direction of the pressure chamber. A plurality of channels arranged in a same row in a direction parallel to the substrate includes channels and having the pressure chamber facing different directions. In a same row, channels (e.g. channel 21a1) driven by a same circuit element (e.g. circuit element) are arranged such that the pressure chambers face a same direction.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: September 10, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventor: Shinya Matsuda
  • Patent number: 10391770
    Abstract: A liquid discharge head includes a flow path substrate including an individual liquid chamber communicating with a nozzle of discharging liquid; and a holding substrate joined to the flow path substrate by an adhesive bond and has an opening communicating with the individual liquid chamber, wherein the opening of the holding substrate has a wall surface crossing relative to a joining surface between the flow path substrate and the holding substrate, wherein an uneven portion is provided on the wall surface of the opening of the holding substrate, and wherein a part of the adhesive bond adheres to the uneven portion on the wall surface.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: August 27, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Keisuke Hayashi
  • Patent number: 10384448
    Abstract: A liquid ejecting head unit includes an ejecting surface in which nozzles for ejecting a liquid are formed, and a first and a second circuit substrates for ejecting the liquid from the nozzles, in which a planar shape of the ejecting surface includes a first, a second and a third portions. A center line parallel to a long side of a rectangle of a minimum area surrounding the ejecting surface passes the first portion but not the second and third portions. The second and third portions are arranged adjacently to the first portion interposed therebetween. The first circuit substrate is positioned in the first and second portions. The second circuit substrate is positioned in at least one of the first and third portions.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: August 20, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Katsuhiro Okubo, Shigeki Suzuki, Hiroyuki Hagiwara, Takahiro Kanegae