Patents Examined by Geoffrey S. Mruk
  • Patent number: 11904613
    Abstract: There is provided an inkjet recording device including a head, a support member, a storage portion, a valve, an actuator, and a controller. The head includes a nozzle and is configured to eject ink from the nozzle. The support member supports the head. The storage portion storing therein ink. The storage portion has a part positioned above the nozzle. The storage portion has an air communication opening allowing an interior of the storage portion to be communicated with an outside of the storage portion. The valve is movable between an opening position in which the valve opens the air communication opening and a closing position in which the valve closes the air communication opening. The actuator is configured to move the valve. The controller configured to control, while the head is ejecting ink from the nozzle toward a recording medium, the actuator to maintain the valve at the closing position.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: February 20, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Fumio Nakazawa, Yoshinori Osakabe, Taichi Shirono, Sosuke Kuroyanagi
  • Patent number: 11884072
    Abstract: A liquid discharge head includes a flow passage substrate which is formed with individual flow passages, the individual flow passages including nozzles and pressure chambers communicated with the nozzles respectively, the pressure chambers being open on a surface of the flow passage substrate; a sealing member which is adhered to the surface via an adhesive and which seals the pressure chambers; and an actuator substrate which has a piezoelectric layer adhered to a surface of the sealing member on a side opposite to the flow passage substrate via an adhesive and individual electrodes formed on a side opposite to the sealing member with respect to the piezoelectric layer. The sealing member is composed of a material different from a material of the piezoelectric layer; and the surface has an adhesion area to which the sealing member is adhered and a non-adhesion area to which the sealing member is not adhered.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: January 30, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takaaki Yoshino, Taisuke Mizuno
  • Patent number: 11878531
    Abstract: A wiping device includes a wiper unit, a carriage, and a fixing member. The wiper unit includes a wiper that wipes a liquid discharge surface of a liquid discharge head from which liquid is to be discharged. The carriage moves along the liquid discharge surface in a first direction and a second direction, both of which are opposite to each other. The fixing member fixes the wiper unit to the carriage. When the carriage is disposed on a side in the first direction with respect to a middle point in a moving range of the carriage, the fixing member is removable in the first direction.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: January 23, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masaki Shimomura, Seiya Sato, Toshihiro Imae
  • Patent number: 11878528
    Abstract: A controller of a liquid ejection device obtains a temperature of a head after recording and before a pre-cap flushing and determines a pre-cap flushing voltage based on the temperature. Then, the controller outputs the pre-cap flushing voltage to the head in the pre-cap flushing process.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: January 23, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Satoru Arakane, Shotaro Iida
  • Patent number: 11878524
    Abstract: A liquid discharge head includes: a first pressure chamber group formed by pressure chambers arranged in a first direction; a second pressure chamber group formed by pressure chambers arranged in the first direction, and disposed side by side with the first pressure chamber group in a second direction; a first common channel extending in the first direction and communicating with the pressure chambers composing the first pressure chamber group; a second common channel extending in the first direction and communicating with the pressure chambers composing the second pressure chamber group; a first dummy pressure chamber disposed on one side in the first direction relative to the first pressure chamber group; and a second dummy pressure chamber disposed on the one side in the first direction relative to the second pressure chamber group.
    Type: Grant
    Filed: February 27, 2023
    Date of Patent: January 23, 2024
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Taisuke Mizuno
  • Patent number: 11865842
    Abstract: A cleaning unit is provided with a cleaning member for cleaning an ejecting head for ejecting liquid and a holder detachably mounted in a holding portion disposed at a position faceable with the ejecting head. The cleaning member is held in the holder in a state in which an absorbent body configured to absorb liquid is wrapped around an elastic body.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: January 9, 2024
    Assignee: Seiko Epson Corporation
    Inventor: Kazutoshi Fujisawa
  • Patent number: 11865841
    Abstract: Disclosed herein is a spittoon assembly for a printing device, a printing device comprising a spittoon assembly, and a method of cleaning a print head using a spittoon assembly. The spittoon assembly comprises a waste receptacle and a spit plate with a receiving surface. The receiving surface is inclined relative to a horizontal direction by an inclination angle when the spittoon assembly is mounted in the printing device. A fluid path extends from the receiving surface to the waste receptacle.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: January 9, 2024
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ignasi Bonjoch Roma, Andreu Vinets Alonso, Javier Deocon Mir
  • Patent number: 11858262
    Abstract: A fluid ejector for ejecting discrete volumes of ejectant includes a body with opposing first and second surfaces. One or more nozzles are defined as conduits extending through the body between the surfaces to connect first and second orifices at the first and second surfaces respectively. The fluid ejector further includes a gas supply means having a gas outlet and an ejectant supply means. The ejectant supply means supplies the ejectant to the nozzles at a pressure above ambient via their supply orifices. The supply orifice is defined in a conduit's side or is the second orifice. Relative movement of the gas supply means and body exposes first orifices to the gas outlet allowing the gas supply means to supply gas at a pressure above ambient, wherein a pressure difference thereby created between the first and second orifices causes ejection of the ejectant from the nozzles through the second orifices.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: January 2, 2024
    Assignee: ARCHIPELAGO TECHNOLOGY GROUP LTD
    Inventors: Daniel Richard Mace, Neil Emerton, David Alan Crooks, Guy Charles Fernley Newcombe, Charlotte Giverny Pamela Joy Stokes, Theodore John Snudden
  • Patent number: 11858269
    Abstract: According to examples, an apparatus may include a fluidic chamber, in which fluid is to be temporarily held. The apparatus may also include a heating component to generate heat to form a drive bubble in the fluid held in the fluidic chamber and a cavitation plate may be provided between the fluidic chamber and the heating component. The cavitation plate may be in communication with the fluidic chamber and may physically separate the fluidic chamber from the heating component to protect the heating component. In addition, a controller may determine a condition in the fluidic chamber based on an electrical signal received from the cavitation plate.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: January 2, 2024
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Eric Thomas Martin, Tsuyoshi Yamashita, Vincent C. Korthuis
  • Patent number: 11850855
    Abstract: A liquid ejection head includes ejection orifices for ejecting liquid, common liquid chambers connected to the ejection orifices, common flow passages, and pitch conversion flow passages that connects the common flow passages and liquid chambers to each other. The pitch conversion flow passages includes a periphery formed with resin. In a case where a number of pitch conversion flow passages in a group is minimum on a condition that one or more of the pitch conversion flow passages are respectively included in the group, the pitch conversion flow passages have a repeating pattern in which the group is repeatedly arranged. At least one of two pitch conversion flow passages adjoining an m-th pitch conversion flow passage (m is all integers from 1 to n?2, where n is an integer of 3 or more) is one of first to (m+1)-th pitch conversion flow passages.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: December 26, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoko Shimizu, Toru Nakakubo, Kazuhiro Yamada, Atsushi Teranishi, Osamu Kanome
  • Patent number: 11845284
    Abstract: Disclosed herein is a print head maintenance cartridge, a printing device and a method of controlling a wiping subsystem of a print head maintenance cartridge. The print head maintenance cartridge comprises a wiping subsystem with a wiping material to wipe a print head; a clean material roll, wherein a clean part of the wiping material is rolled up on the clean material roll at least in part; a brake to generate a first brake force applied to the wiping material; and a friction element to generate a second brake force applied to the wiping material, wherein the friction element compensates at least in part a change in the first brake force to control a total brake force, wherein the total brake force is the sum of the first and second brake forces.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: December 19, 2023
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Santiago Forcada Pardo, Javier Deocon Mir, Alejandro Mielgo Barba
  • Patent number: 11845288
    Abstract: Provided is a flow path unit through which liquid to be supplied to a head for ejecting the liquid flows. The flow path unit includes a flow path member having a flow path, and a filter unit configured to be detachably attached to the flow path member, the flow path member has an opening that communicates with the flow path and to which the filter unit is configured to be mounted, and the filter unit includes a filter configured to filter liquid flowing through the flow path, and a holding member configured to hold the filter.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: December 19, 2023
    Assignee: Seiko Epson Corporation
    Inventor: Ryo Kawakami
  • Patent number: 11840082
    Abstract: A channel member of a liquid ejection head includes an ejection surface, an outer peripheral surface that is connected to an outer edge of the ejection surface and that faces outside of the ejection surface in a direction along the ejection surface, and a plurality of ejection holes that open in the ejection surface. The channel member includes a plurality of concave portions in the outer edge of the ejection surface, the plurality of concave portions being recessed in the ejection surface and being recessed in the outer peripheral surface. With the configuration, it is possible to collect, in the concave portions, a liquid (such as ink mist) that has leaked out from the ejection holes.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: December 12, 2023
    Assignee: KYOCERA CORPORATION
    Inventor: Kazuya Yoshimura
  • Patent number: 11840098
    Abstract: A printing device includes: an inkjet printhead; a lift mechanism for raising and lowering the printhead through a lift path; and a pivotally movable spit flap positioned in the lift path. The spit flap is configured to swing away from the lift path when the printhead contacts the spit flap during lowering of the printhead.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: December 12, 2023
    Assignee: Memjet Technology Limited
    Inventors: David Burke, Jason Mark Thelander, Dan Baterna, Rommel Balala, Peter Crichton
  • Patent number: 11840088
    Abstract: A wiping unit includes a wiping member with a long shape configured to wipe a liquid ejecting head configured to discharge liquid, a first roller around which to wind the wiping member, a second roller configured to wind up the wiping member fed out from the first roller, a driving force transmission mechanism configured to transmit a driving force of a driving source to the second roller, a conveyance roller configured to make contact with the wiping member and rotate along with a movement of the wiping member, a first detection unit configured to detect a rotation amount of the first roller, and a second detection unit configured to detect a rotation amount of the conveyance roller.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: December 12, 2023
    Inventor: Kazushi Arafuka
  • Patent number: 11833825
    Abstract: A printhead maintenance system for a printing machine having at least one printhead, the system includes a body, at least one guide track supporting the body for movement along the at least one guide track in proximity to the face of the printhead, and a drive mechanism in engagement with the body and operable to move the body along the guide track. A wiper blade is movably mounted on said body for movement between a retracted position in which the wiper blade cannot contact the face of the printhead and an operative position in which the wiper blade can contact the face of the printhead. A biasing mechanism is provided between the wiper blade and the body that is configured to bias the wiper blade to the operative position. The system includes a retraction mechanism that is operable to move the wiper blade to the retracted position upon movement of the body along the guide track.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: December 5, 2023
    Assignee: Xerox Corporation
    Inventor: Joshua Lake
  • Patent number: 11833823
    Abstract: A liquid ejecting device includes a head, a cap, a moving mechanism and a controller. The moving mechanism is configured to move the head and the cap relative to each other to switch the cap between a capping state in which the cap is in contact with the head and covers the plurality of nozzles and a non-capping state in which the cap is separated from the head and uncovers the same. The controller is configured to perform setting a non-ejection drive time based on an uncapped time duration which is a length of time from a timing at which the cap is switched to the non-capping state until a timing at which the cap is switched back to the capping state. The controller is configured to perform vibrating meniscus of liquid in the plurality of nozzles during the non-ejection drive time.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: December 5, 2023
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Mikio Hirano, Masaki Mori
  • Patent number: 11833821
    Abstract: Provided is a liquid ejecting head including a nozzle surface, a shaft portion, and a housing portion. The nozzle surface has nozzles configured to eject liquid in a first direction. The shaft portion includes a shaft main body extending in the first direction. The housing portion has a through-hole in which the shaft portion is inserted. The first shaft portion has a first external thread and a first internal thread on a first side to which the first direction leads.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: December 5, 2023
    Assignee: Seiko Epson Corporation
    Inventor: Yoshiki Sugawara
  • Patent number: 11833817
    Abstract: Long-term reliability of a liquid ejection head substrate and a liquid ejection head is improved by suppressing dissolution of an intermediate layer due to anodization. A liquid ejection head substrate including: a flow passage forming member having an ejection orifice and a flow passage; a heating resistance element for ejecting a liquid; an insulating layer covering the heating resistance element; a protecting layer whose surface is exposed to the flow passage; and an intermediate layer provided between the flow passage forming member and the protecting layer, in which the intermediate layer contains a material represented by a following composition formula (I): Siw1Ox1Cy1 (I), 39?w1?62 (at. %), 32?x1?55 (at. %), and 6?y1?29 (at. %), and w1+x1+y1=100 (at %).
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: December 5, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiko Minami, Kenji Takahashi, Mai Hirohara
  • Patent number: 11827017
    Abstract: A liquid ejection head includes a recording element substrate. The recording element substrate includes a recording element, a circuit wiring driving the recording element to eject liquid, a protective film, an electrode area, a plating bump, and a resin film having elastic properties. The electrode area electrically connects the circuit wiring to an external circuit through an opening in the protective film. The protective film covers the circuit wiring in an outer adjacent region to the opening to define a step in the protective film. The protective film protects the circuit wiring against the liquid. The plating bump is electrically connected to the electrode area. The resin film covers the step and extends from an inner peripheral region of the opening onto the protective film beyond an edge of the opening. The plating bump includes a part projecting from the electrode area onto an upper surface of the resin film.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: November 28, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Hashimoto, Junichiro Iri, Hiroaki Kusano