Patents Examined by An H. Do
  • Patent number: 11135845
    Abstract: A liquid discharge head includes a plurality of nozzles to discharge liquid, a plurality of pressure chambers communicating with the nozzles, a plurality of individual flow paths communicating with the plurality of pressure chambers, and a common flow path communicating with the plurality of individual flow paths. Further, each individual flow path includes a first flow path portion and a second flow path portion each having a fluid resistance higher than a fluid resistance of a pressure chamber of the plurality of pressure chambers that communicates with the individual flow path, and a third flow path portion disposed between the first flow path portion and the second flow path portion, the third flow path portion having a fluid resistance lower than the fluid resistance of the first flow path portion and the third resistance of the second flow path portion.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: October 5, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shiomi Andou, Takahiro Yoshida, Takayuki Nakai
  • Patent number: 11135853
    Abstract: The present invention relates to an ink circulation supply system for an inkjet head. The system is configured to supply ink to the inkjet head having a plurality of nozzles for ejecting the ink, and includes: a meniscus reservoir; a circulation reservoir; and an ante reservoir, the reservoirs where a first pressure connection pipe with a first pressure valve, a second pressure connection pipe with a second pressure valve, a first ink connection pipe, and a second ink connection pipe with an ink valve are provided, wherein when the internal pressure of the circulation reservoir is controlled to be lower than that of the meniscus reservoir, the ink stored in the meniscus reservoir is moved to the circulation reservoir without requiring use of a separate pump.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: October 5, 2021
    Assignee: GOSANTECH CO., LTD.
    Inventor: Jaeryul Yu
  • Patent number: 11135857
    Abstract: A system for a partially dried inkjet media conditioner can include a heated pressure roller to apply pressure to a first side of partially dried inkjet media and apply heat to a second side of the partially dried inkjet media.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: October 5, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alan Shibata, Matthew Raisanen
  • Patent number: 11123984
    Abstract: A liquid ejecting head with a supply port and an outlet port includes a pressurization chamber communicating with one of the suplly port and the outlet port, a first flow path communicating with the pressurization chamber and extending in a first axial direction, a second flow path communicating with the other of the supply port and the outlet port and extending in a second axial direction orthogonal to the first axial direction, and a nozzle that is provided to branch from the second flow path and that discharges the liquid along the first axial direction. When viewed in a third axial direction orthogonal to the first axial direction and the second axial direction, an inner wall at a location at which the second flow path and the first flow path intersect includes an inclined surface inclined with respect to the first axial direction and the second axial direction.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: September 21, 2021
    Assignee: Seiko Epson Corporation
    Inventor: Masahiro Takeuchi
  • Patent number: 11124002
    Abstract: A partial printing fluid short detection system can detect a partial printing fluid short in a print head. The partial printing fluid short detection system includes a timing circuit to detect a print gap of the print head, and the partial printing fluid short detection system can detect the partial printing fluid short in response to detection of the print gap.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: September 21, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ben Percer, James Hasler
  • Patent number: 11123985
    Abstract: A liquid ejection head includes a plurality of first individual channels arranged in a first direction, a first common channel extending in the first direction and communicating with the first individual channels, and a second common channel located below the first common channel and extending in the first direction. The second common channel communicates with the first individual channels. Each of the first individual channels includes one of first nozzles, and one of first pressure chambers that communicate with the respective first nozzles and are located above the first nozzles. The first common channel and the second common channel overlap, in the vertical direction, with each other at a position above the first pressure chambers. Each of the first common channel and the second common channel at least partially overlaps, in the vertical direction, with the first pressure chambers.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: September 21, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Taisuke Mizuno, Hideki Hayashi
  • Patent number: 11110719
    Abstract: In a liquid discharge head, a first pump and a second pump are arranged inside a channel, the channel includes a pressure chamber including an energy generating element, and liquid inside the pressure chamber is circulatable between inside and outside of the pressure chamber by the first pump or the second pump. The first pump is arranged on one side relative to a midpoint of the channel in an extending direction of the channel, and the second pump is arranged on another side relative to the midpoint of the channel in the extending direction of the channel.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: September 7, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Sasaki, Masafumi Morisue, Seiichiro Yaginuma, Shinji Kishikawa, Masataka Nagai
  • Patent number: 11110707
    Abstract: A liquid ejection head includes first individual channels arranged in a first direction, a first common channel extending in the first direction and communicating with the first individual channels, and a second common channel located below the first common channel and extending in the first direction. The second common channel communicates with the first individual channels. Each of the first individual channels includes one of first nozzles, and one of first pressure chambers that communicate with the respective first nozzles and are located above the first nozzles. The first common channel and the second common channel overlap, in a vertical direction, with each other at a position above the first pressure chambers. The first common channel overlaps, in the vertical direction, with the first pressure chambers. The second common channel does not overlap, in the vertical direction, with the first pressure chambers.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: September 7, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Taisuke Mizuno
  • Patent number: 11113668
    Abstract: In a method for determining an area milled by at least one construction machine or at least one mining machine with a milling drum (2) working a predetermined area in several milling trajectories by at least one machine (1), determining the length of the milling trajectories along which a milling operation has taken place by evaluating the continuous machine positions, adding up the previously milled partial areas taking into account the length of the milling trajectory and the installed width of the milling drum (2), wherein the partial area currently milled along the milling trajectory is checked, either continuously or subsequently, for overlapping or multiple overlapping with any previously milled partial areas, and any partial areas which overlap are deducted, as overlapping areas, from the added-up previously milled partial areas, the total added-up partial areas milled minus the total overlapping areas established give the milled area.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: September 7, 2021
    Inventors: Sven Paulsen, Stefan Wagner, Cyrus Barimani
  • Patent number: 11104133
    Abstract: A liquid discharging head, having a first pressure chamber group, a second pressure chamber group, and a common flow path, is provided. The first pressure chamber group and the second pressure chamber group each have a plurality of pressure chambers arrayed in a first direction. The second pressure chamber group aligns with the first pressure chamber group along a second direction intersecting with the first direction. The common flow path extends in the first direction. The common flow path communicates with each of the pressure chambers belonging to the first pressure chamber group and the second pressure chamber group. The common flow path has a supplying opening at one end thereof and a returning opening at the other end thereof in the first direction. The common flow path is located between the first pressure chamber group and the second pressure chamber group in the second direction.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: August 31, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Jiro Yamamoto
  • Patent number: 11104166
    Abstract: A printer includes a first printing unit responsible for one of preceding printing and subsequent printing that are to be performed on one sheet in overprinting, an other of the preceding printing and the subsequent printing being performed by a second printing unit; and a base-printing controller that causes the first printing unit to print a base for printing by the second printing unit in an operation of forming a test pattern for registration between the preceding printing and the subsequent printing on the sheet.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: August 31, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventor: Tomokazu Sugata
  • Patent number: 11104144
    Abstract: A liquid ejecting head includes a substrate where a first nozzle and a second nozzle that eject liquid. The substrate is formed with a plurality of hole portions which communicate with a supply liquid chamber and in each of which a meniscus for absorbing pressure variation of liquid inside the supply liquid chamber is formed. The plurality of hole portions include a first hole portion. A distance between an end portion of a first supply flow path on a side of the supply liquid chamber and the first hole portion is equal to a distance between an end portion of a second supply flow path on a side of the supply liquid chamber and the first hole portion.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: August 31, 2021
    Assignee: Seiko Epson Corporation
    Inventor: Tsutomu Nishiwaki
  • Patent number: 11097542
    Abstract: There is provided a liquid discharge head including a channel unit. The channel unit includes: first and second individual channel groups including a plurality of first and second individual channels; two supply manifolds and two return manifolds; and bypass channels communicating with the two supply manifolds or with the two return manifolds. A relationship of |P1|>|P2| is satisfied, wherein P1 is a first pressure of the supply manifold provided commonly for the first individual channel group, P2 is a second pressure of the supply manifold provided commonly for the second individual channel group, ?P1 is a third pressure of the return manifold provided commonly for the first individual channel group, and ?P2 is a fourth pressure of the return manifold provided commonly for the second individual channel group.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: August 24, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shotaro Kanzaki, Toshihiro Kishigami
  • Patent number: 11097541
    Abstract: A liquid discharging head including a flow path member with layered plates is provided. The flow path member includes a common flow path, pressure-chamber inclusive flow paths, discharging flow paths, at least one supplying flow path. The pressure-chamber inclusive flow paths are formed in a part of the plates belonging to a first plate group and are arrayed in the first direction. The discharging flow paths are formed in another part of the plates belonging to a second plate group. The at least one supplying flow path is formed in at least one of the plates belonging to a third plate group. The third plate group includes at least one of the part of the plates belonging to the second plate group. The at least one supplying flow path has a connecting portion connected with at least two of the pressure-chamber inclusive flow paths.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: August 24, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Taiki Tanaka
  • Patent number: 11090934
    Abstract: A manifold to provide print fluid to a printhead, the manifold comprising: an inlet to receive print fluid from a print fluid supply; and an outlet to provide print fluid to the printhead; the inlet to couple with a flow control device to control flow of print fluid from the print fluid supply to the manifold; and wherein the inlet comprises an element to engage an actuatable member of the flow control device to activate the flow control device to allow print fluid to flow from the print fluid supply to the printhead.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: August 17, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Aidan O'Reilly, Tommy O'Connor, Enda Malone, David Kelly
  • Patent number: 11084287
    Abstract: An object is to remove paper powder from a conveyance path while preventing the paper powder floating in the conveyance path from sticking to an ejection port. The present disclosure is printing apparatus having: a conveyance unit configured to convey a printing medium; a print head having an ejection unit configured to eject a liquid to the printing medium and performing a printing operation; a blower unit configured to blow air from a downstream toward the printing area in the conveyance path during the printing operation; and a cap member switchable between a cap-closed state and a cap-open state, and after the printing operation terminates, the blower unit stops to blow air and the blower unit resumes to blow air after the cap member switches from the cap-open state into the cap-closed state.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: August 10, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Kida, Takaaki Ishida
  • Patent number: 11072720
    Abstract: The present invention provides an aqueous ink of active energy ray curable type for ink jet. The aqueous ink contains resin particles and a photo acid generator. The resin particles include a reactive group-containing resin having at least one reactive group selected from the group consisting of an epoxy group, an oxetanyl group and a vinyl ether group. Further provided are an ink cartridge and an ink jet recording method in which the aqueous ink is used.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: July 27, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Furuse, Naofumi Shimomura, Takayuki Horiuchi, Akemi Watanabe, Yoko Uetake, Shoji Shiba
  • Patent number: 11072187
    Abstract: An inkjet recording apparatus includes three or more recording heads. The recording heads contain different inks and eject the different inks sequentially on a recording medium. The different inks each contain a pigment and a polyhydric alcohol monobutyl ether. Of the different inks, an ink to be ejected first has the lowest pigment content ratio. Of the different inks, an ink to be ejected third and an ink to be subsequently ejected each have a pigment content ratio equal to or higher than that of a corresponding one of inks to be precedently ejected. Of the different inks, an ink to be ejected second and an ink to be subsequently ejected each have a polyhydric alcohol monobutyl ether content ratio higher than that of a corresponding one of inks to be precedently ejected.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: July 27, 2021
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Noriaki Ozawa, Hiroatsu Tamai, Takeshi Watanabe, Yasuhiro Michishita, Hiroyuki Ueda, Toyotsune Inoue, Yusuke Takano, Naoto Miyakoshi
  • Patent number: 11065873
    Abstract: A liquid ejection apparatus includes a supply manifold, a return manifold, and a plurality of individual channels. The supply manifold and the return manifold are elongate and vertically overlap each other, and liquid flows therein. Each individual channel connects the supply manifold and the return manifold and includes a supply throttle connected, at a supply-manifold-side opening thereof, to the supply manifold, a return throttle connected, at a return-manifold-side opening thereof, to the return manifold, a nozzle from which liquid is ejected, and a descender connecting the supply throttle and the return throttle, and connected to the nozzle. The supply-manifold-side opening of the supply throttle is positioned to vertically overlap a central area of the supply manifold in a width direction, and the return-manifold-side opening of the return throttle is positioned to vertically overlap a central area of the return manifold in the width direction.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: July 20, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Katayama, Shohei Koide, Keita Hirai, Keita Sugiura
  • Patent number: 11065875
    Abstract: There is provided a liquid discharge apparatus configured to discharge a liquid, including a channel member for the liquid. The channel member is formed to include: a pressure chamber configured to contain the liquid; a nozzle configured to discharge the liquid; a connection channel connecting the pressure chamber and the nozzle; and a discharge channel which is connected to the connection channel so as to discharge the liquid in the connection channel or connected to the pressure chamber so as to discharge the liquid in the pressure chamber. An intersection line between an orthogonal plane orthogonal to an extending direction of the discharge channel and an upper surface of the discharge channel defining an upper portion of the discharge channel has an arc-like shape protruding upwardly.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: July 20, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Keita Sugiura, Shohei Koide, Keita Hirai, Hiroshi Katayama