Fluid Supply System Patents (Class 347/85)
  • Patent number: 10994546
    Abstract: According to one aspect, the disclosure provides an image recording apparatus including a liquid supplying device. The liquid supplying device includes a tank, a cartridge, an atmospheric communication portion, and a recording portion. The tank has a second storage chamber configured to store liquid, a liquid passage in communication with the second storage chamber, and a gas passage in communication with the second storage chamber. The atmospheric communication portion includes a buffer tank defining a buffer chamber configured to store gas, a single communication flow passage allowing the buffer chamber to communicate with the second storage chamber, and an air communication passage allowing the buffer chamber to communicate with an atmosphere. When the cartridge is attached to the tank, the buffer chamber is positioned below the first storage chamber and the second storage chamber is positioned below the buffer chamber.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: May 4, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masahiro Hayashi, Yoshinori Osakabe, Akinari Ishibe, Hiroaki Takahashi
  • Patent number: 10987957
    Abstract: A liquid container includes a first liquid accommodating chamber 31, a filter 50, a filter chamber 42 in which the filter is disposed, and a partition wall 47 that divides the first liquid accommodating chamber and the filter chamber. The filter chamber is disposed on the ?Z side of the first liquid accommodating chamber, which is vertically below the first liquid accommodating chamber. The partition wall has a flow-out path 51, which has an outlet 106 covered by the filter and through which the liquid having passed through the filter flows to the liquid ejecting head, a first communication path 48 having a first communication port 111, and a second communication path 49 having a second communication port 112. The communication paths are provided at positions different from the position of the flow-out path and communicate with the first liquid accommodating chamber and the filter chamber.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: April 27, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Shoma Kudo, Naomi Kimura
  • Patent number: 10981393
    Abstract: A liquid ejecting apparatus includes: a recording head that ejects liquid; a pressurizing mechanism that supplies the liquid under pressure; a valve-mechanism provided between the pressurizing mechanism and the recording head, the valve-mechanism including a liquid storage chamber storing the liquid supplied under pressure, a pressure chamber that is provided closer to the recording head than to the liquid storage chamber and stores the liquid, and a valve body that moves in a valve opening direction according to a negative pressure in the pressure chamber to communicate the liquid storage chamber with the pressure chamber; and a pressure control section controlling a pressure of the liquid supplied from the pressurizing mechanism to the valve-mechanism. The pressure control section controls the pressure of the liquid that is supplied under pressure by the pressurizing mechanism to the liquid storage chamber, to move the valve body in the valve opening direction.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: April 20, 2021
    Assignee: Seiko Epson Corporation
    Inventor: Hiroki Miyajima
  • Patent number: 10974510
    Abstract: A liquid ejecting head includes a nozzle formation surface disposed between a first roller and a second roller in a medium transport direction, a first positioning portion used for positioning with respect to a first head holding member provided in a first liquid ejecting apparatus in which a distance between the first roller and the second roller in the medium transport direction is set to a first distance, and a second positioning portion used for positioning with respect to a second head holding member provided in a second liquid ejecting apparatus in which the distance between the first roller and the second roller in the medium transport direction is set to a second distance being different than the first distance.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: April 13, 2021
    Assignee: Seiko Epson Corporation
    Inventor: Eiichiro Watanabe
  • Patent number: 10967638
    Abstract: A print module includes: a cradle defining a longitudinal cavity and an access opening at a first end of the longitudinal cavity; an elongate printhead carrier positioned in the longitudinal cavity, the printhead carrier being pivotable about a pivot axis at a second end of the cradle opposite the first end; and an elongate printhead longitudinally slidably engaged with the printhead carrier. The printhead is removable from the cradle via pivoting of the printhead carrier and longitudinally sliding the printhead relative to the printhead carrier through the access opening.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: April 6, 2021
    Inventors: David Burke, Norman Berry, Harrick Selvan Anothonysamy, Reynovel Pacinio Anciano, Soon Keat Fah, Poh Lai Say
  • Patent number: 10967645
    Abstract: A recording apparatus includes a main unit that accommodates a recording head and a carriage that is movable in a transport direction of the medium. At least one liquid container mounted above the recording head in the carriage contains the liquid to be supplied to the recording head and has an inlet through which the liquid is to be refilled from an ink refill bottle. The plug member plugs up the inlet. An illumination member irradiates the liquid container from the liquid container. A detector detects detaching of the plug member from the inlet. A controller controls the illumination member, based on a detection result of the detector. The illumination member irradiates the liquid container in response to detection of the detaching of the plug member from the inlet with the detector.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: April 6, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Tomoyuki Higuchi, Nobuhisa Nomoto
  • Patent number: 10933652
    Abstract: A liquid circulation device includes a housing having an outlet and an inlet, a circulation unit configured to convey liquid out of the housing through the outlet and recover liquid into the housing through the inlet, a liquid supplying unit configured to supply liquid into the housing, an air conveying unit configured to convey air into and out of the housing, a level detecting unit configured to detect a level of the liquid in the housing, a pressure sensing unit configured to detect a pressure of the air in the housing, and a control unit configured to control a pressure of the liquid in the housing by controlling the liquid supplying unit or the air conveying unit, based on the level and the pressure of the air.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: March 2, 2021
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Hiroyuki Ishikawa
  • Patent number: 10926546
    Abstract: Fluid supply apparatus 104 is disclosed. The fluid supply apparatus 104 comprises a first conduit 106 to supply fluid to a fluid dispense head and a second conduit 108 to receive fluid from the fluid dispense head. The first conduit 106 and second conduit 108 may both supply print fluid to a print head in a printing or servicing configuration. The first conduit 106 and the second conduit 108 are coupled together via a closable third conduit 116. The closable third conduit 116 permits fluid flow between the first conduit 106 and the second conduit 108. The third conduit 116 comprises deformable walls movable towards each other to close the third conduit 116 to the passage of fluid between the first 106 and second conduit 108.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: February 23, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David Butinya, Pol Vinardell, Marta Coma Vives
  • Patent number: 10926441
    Abstract: There is provided a liquid supply member capable of suppressing deformation of a liquid supply path and decrease in sealing property of a liquid supply path, during molding, and a manufacturing method of the liquid supply member. For that purpose, in die-slide injection molding that combines two components, a protection portion that protects a part of one component easily affected by heat and pressure, is provided on the other component.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: February 23, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoko Tsujiuchi, Yukuo Yamaguchi, Mikiya Umeyama, Satoshi Oikawa, Hiromasa Amma, Takuya Iwano, Satoshi Kimura, Yasushi Iijima, Kyosuke Toda
  • Patent number: 10919308
    Abstract: A closed supply container that is filled with air and ink is associated with a print head in a one-to-one association. During a printing process, ink is drawn from the supply container into the print head via a connecting line, such that a negative pressure in the supply container is increased. A sensor in the supply container measures the negative pressure and transmits a measurement value to a controller that switches a valve associated with the supply container so that ink is conveyed from an ink storage container into the supply container of the measurement value falls below a predetermined first lower limit value of the pressure such that the fluid pressure in the supply container increases.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: February 16, 2021
    Assignee: Canon Production Printing Holding B.V.
    Inventor: Florian Hitzlsperger
  • Patent number: 10919303
    Abstract: A device for supplying a print bar (10) with ink has a distributor tank (16) that is connected with all print heads (12). Degassed and tempered ink is supplied to the distributor tank (16). In the distributor tank (16), a ring line (36) extends through which flows ink at the nominal temperature, and the ink (19) in the distributor tank (16) is thereby tempered. In addition to this, the distributor tank (16) has a supply line (38) via which fresh ink may be fed into the distributor tank (16). A changeover switch (42) switches between the two lines depending on the negative pressure in the distributor tank (16).
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: February 16, 2021
    Assignee: Canon Production Printing Holding B.V.
    Inventor: Florian Hitzlsperger
  • Patent number: 10906321
    Abstract: A print module includes: a cradle having a nest for receiving a printhead; an elongate printhead assembly received in the nest, the printhead assembly including a printhead having first and second ink ports at opposite longitudinal ends thereof; and a supply assembly slidably movable relative to the nest along an axis perpendicular to a longitudinal axis of the printhead. The supply assembly includes first and second ink couplings fast with the supply assembly and connected to respective first and second ink ports. The print module is configured such that movement of the supply assembly disconnects the second ink coupling prior to disconnection of the first ink coupling.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: February 2, 2021
    Inventors: David Burke, Norman Berry, Harrick Selvan Anothonysamy, Reynovel Pacinio Anciano, Soon Keat Fah, Poh Lai Say
  • Patent number: 10899136
    Abstract: A printing device comprises a printing fluid supply; a plurality of printheads connected in parallel to the supply by a first flow path and a second flow path; a first fluid pressure source to create a negative fluid pressure between the supply and the first openings; a second fluid pressure source to create a positive fluid pressure between the supply and the second openings; and a controller. Each printhead comprises a closable first opening connected to the first flow path and a closable second opening connected to the second flow path, and has an associated mechanism to increase a fluid pressure in the printhead. Each first opening is to open in response to operation of the associated mechanism. The controller is to identify a first printhead for which printing fluid in the first printhead is to be recirculated; and operate the mechanism associated with the identified printhead.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: January 26, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David Butinya, Marta Coma Vives, Joan-Albert Miravet
  • Patent number: 10894415
    Abstract: A liquid discharge head includes: a first channel member including a liquid channel. The liquid channel includes: pressure chambers connected respectively to nozzles and arranged in a first direction; throttle channels connected to the pressure chambers and extending from connection portions with the pressure chambers toward a first side in a second direction orthogonal to the first direction; and coupling channels arranged in the first direction, each of the coupling channels being connected to two or more of the throttle channels that are adjacent to each other in the first direction, extending in a third direction orthogonal to the first direction and the second direction, having openings in a surface in the third direction of the first channel member.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: January 19, 2021
    Inventors: Yasuo Kato, Toru Kakiuchi, Yuichi Ito
  • Patent number: 10882324
    Abstract: Example implementations relate to printer valve seals. In some examples, a printer valve to receive print substance from a fluid conduit and transmit the received print substance to a print cartridge can include a valve neck having a first seal member to provide a seal between the valve neck and an inlet of the print cartridge, and an actuator having a second seal member to form a seal within a valve body of the printer valve while the valve neck is detached from the inlet of the print cartridge.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: January 5, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: John J. Cantrell, Sierra Lila Wolf
  • Patent number: 10882339
    Abstract: A dryer includes a heater configured to heat an object to dry the object, a plurality of collection devices configured to collect a liquid generated by liquefication of condensed vapor in the dryer, a drainage tube configured to drain the liquid from each of the plurality of collection devices, a pump configured to feed the liquid through the drainage tube, a switch configured to switch a connection between the plurality of collection devices and the switch, and a pressure sensor configured to measure a pressure between the switch and the pump.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: January 5, 2021
    Assignee: Ricoh Company, Ltd.
    Inventor: Toshihiro Yoshinuma
  • Patent number: 10870298
    Abstract: A print module including: a cradle having a longitudinal cavity; an elongate printhead carrier positioned in the longitudinal cavity, the printhead carrier having a first end and a second end, the printhead carrier being pivotable relative to the cradle about a pivot axis the second end; a supply assembly slidably movable relative to the cradle along an axis perpendicular to a longitudinal axis of the printhead carrier, the supply assembly having ink couplings for fluidic connection to a printhead received in the printhead carrier; and a mechanical linkage interconnecting the first end of the printhead carrier and the supply assembly. Reciprocal movement of the supply assembly moves the printhead carrier between a tilted position and a non-tilted position.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: December 22, 2020
    Assignee: Memjet Technology Limited
    Inventors: David Burke, Norman Berry, Harrick Selvan Anothonysamy, Reynovel Pacinio Anciano, Soon Keat Fah, Poh Lai Say
  • Patent number: 10850524
    Abstract: There is provided a tank including a casing provided with first and second walls; first and second chambers; an atmosphere open port; a first communicating channel; a second communicating channel; a liquid inlet port; a first communicating port; a second communicating port; a liquid inflow port; and a liquid outflow port. Under a condition that the tank is in a posture in which the first wall constructs an upper portion of the tank and that the second wall constructs a lower portion of the tank in a vertical direction and that a maximum amount, of the liquid, storable in the tank in an usable posture of the tank, is stored in the first and second chambers, the first and second communicating ports are located at a position above a liquid surface of the maximum amount of the liquid.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: December 1, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Taichi Shirono, Masako Kawagoe, Yoshinori Osakabe, Masahiro Hayashi
  • Patent number: 10850523
    Abstract: For an image forming apparatus including first and second storage chambers, an inequality expression of “R2>A×R1” is met. R1 is a sum of a passage resistance value obtained by flowing air through a first air communication portion and a passage resistance value obtained by flowing liquid through a supply portion. R2 is a passage resistance value obtained by flowing air through a second air communication portion. A is a cross-sectional area ratio obtained by dividing a first average cross-sectional area of a first space of the first storage chamber taken along a plurality of horizontal planes by a second average cross-sectional area of a second space of the second storage chamber taken along the plurality of horizontal planes. The first space contains at least a portion adjacent to the supply portion and accumulating the liquid. The second space contains at least a portion accumulating the liquid.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: December 1, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Akihito Kobayashi, Akinari Ishibe, Yuma Tanabe, Masahiro Hayashi, Masatake Sato
  • Patent number: 10850521
    Abstract: Herein is disclosed an ink storage unit. The ink storage unit may comprise first and second reservoirs, each having a variable internal volume; a transfer system to transfer ink between the first and second reservoirs such that as ink is transferred from the first reservoir to the second reservoir, the internal volume of the first reservoir decreases and the internal volume of the second reservoir increases.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: December 1, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Barret Kammerzell, Marta Coma Vives, Daniel Callejo, Guillem Montero Costa
  • Patent number: 10846576
    Abstract: A controller sets an order condition requiring that one of a latest index value and a current timing reach corresponding one of a reference index value and a reference timing. The order condition is set so that a first cartridge is delivered to a predetermined destination at a first timing. The first cartridge is expected to be out of a printing agent while a first tank is expected to still accommodate the printing agent at the first timing. The controller transmits, in response to determining that a second cartridge is expected to be out of a printing agent while a second tank is expected to still accommodate the printing agent at the first timing, an order command instructing to order the first cartridge and the second cartridge to a relevant device after the order condition is satisfied.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: November 24, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Satoshi Watanabe
  • Patent number: 10845730
    Abstract: A liquid container is configured to be fitted to the carriage of a liquid consumption device including the carriage where a head is provided and that jets, while making the carriage reciprocate, a liquid from the head so as to consume and stores the liquid to be supplied to the head. The liquid container includes: a liquid storage portion configured to store the liquid inside; an undulation reduction portion provided in the liquid storage portion and including a wall surface configured to reduce the undulation of the liquid and be directed in the direction of gravity in a fitting posture where the liquid container is fitted to the carriage; and a support portion configured to support the undulation reduction portion such that the undulation reduction portion is allowed to swing with the liquid and that the movement of the wall surface along the direction of gravity is restricted.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: November 24, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Naoki Naito, Ryota Takahashi
  • Patent number: 10843471
    Abstract: A liquid ejection apparatus comprises a carriage that includes a liquid ejection head and that moves inside a predetermined moving range, a plurality of liquid containers mounted on the carriage, the plurality of liquid containers including liquid refill ports respectively, an exterior member that covers the moving range, the exterior member including an opening configured to have a liquid outlet portion of the liquid refilling container be inserted therein, a selection information receiving portion that receives an input of a selected target liquid container, among the plurality of liquid containers, in which refilling of the liquid is to be performed, and a control unit that, using selection information that the selected information receiving portion has received, moves the carriage so that the liquid refill port of the target liquid container faces the opening.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: November 24, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Taku Ishizawa, Tadahiro Mizutani
  • Patent number: 10843480
    Abstract: An inkjet printing apparatus includes: a print head provided with an ejection opening surface; a tank; a supply flow path; a collection flow path; an intra-tank vacuum pump to reduce pressure inside the tank; and a control unit. The control unit performs a first operation and a second operation, the first operation causing the intra-tank vacuum pump to operate while a collection drive valve is closed, so as to pull out ink in a flow path which extends from the ejection opening to the supply flow path into the tank, the second operation causing the intra-tank vacuum pump to operate while a supply drive valve is closed, so as to pull out ink in a flow path which extends from the ejection opening to the collection flow path into the tank.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: November 24, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryoma Arai, Tsuyoshi Saeki, Toshiaki Tokisawa, Junya Kosuge
  • Patent number: 10836176
    Abstract: The subject matter discloses a fluid cartridge comprising a container to hold a predetermined volume of fluid, and a lid for closing the container. The lid comprises a valve-recess and an inlet valve in the valve-recess to transfer a volume of a replacement fluid in the container for replacing depleted volume of fluid in the container. A rocker valve is pivoted in the valve-recess to cover the inlet valve during a regulation phase. The rocker valve is to open the inlet valve during an actuation phase to allow the replacement fluid to enter the container. A spring element is movably disposed on the rocker valve to control actuation of the rocker valve for opening and closing the inlet valve. The spring element slides across the rocker valve, from a regulation zone of the rocker valve to an actuation zone of the rocker valve, to open the inlet valve.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: November 17, 2020
    Inventors: Paul Mark Haines, Aik Liang Roy Teh, Suriyaprakash Saravanan, Anjan Prabhat Pattathil
  • Patent number: 10800180
    Abstract: A liquid circulation device includes a first liquid discharge head to discharge a liquid, a first supply channel to supply the liquid to the first liquid discharge head, a first collection channel to collect the liquid from the first liquid discharge head, a second liquid discharge head to discharge the liquid and disposed higher than the first liquid discharge head, a second supply channel to supply the liquid to the second liquid discharge head, a second collection channel to collect the liquid from the second liquid discharge head, a supply-side fluid restrictor disposed in the first supply channel to make a fluid resistance value of the first supply channel greater than a fluid resistance value of the second supply channel, and a collection-side fluid restrictor disposed in the second collection channel to make a fluid resistance value of the second collection channel greater than a fluid resistance value of the first collection channel.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: October 13, 2020
    Assignee: Ricoh Company, Ltd.
    Inventor: Ryuji Yoshida
  • Patent number: 10792926
    Abstract: A liquid supplying device includes a tank; and a cartridge configured to be attached to the tank and having a first storage chamber configured to store liquid. The cartridge is formed with a communicating opening in communication with the first storage chamber. The tank has a second storage chamber configured to store the liquid, a liquid passage, a gas passage, a joint, an outer wall, an inner wall, an air communication portion, and a narrow-width portion. The liquid passage is in communication with the second storage chamber and has a first vertical portion. The gas passage has a second vertical portion. The first vertical portion, the second vertical portion, and the air communication portion are arranged in this order in the first direction and a direction away from the fifth end portion.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: October 6, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masahiro Hayashi, Yoshinori Osakabe, Akinari Ishibe, Hiroaki Takahashi
  • Patent number: 10792930
    Abstract: A liquid ejection apparatus includes an ejection port ejecting a liquid, a pressure chamber storing the liquid, an element generating energy for ejecting the liquid in the pressure chamber, first and second tanks which can store the liquid, a flow passage establishing communication between the first and second tanks through the pressure chamber, a switching unit switching a flowing direction of the liquid in the flow passage between a first direction from the first tank to the second tank and a second direction being opposite to the first direction, and a pressure compensation unit. When a pressure in a downstream side flow passage portion downstream of the pressure chamber has a predetermined pressure or below, the pressure compensation unit compensates for reduction in pressure in the downstream side flow passage portion by supplying the liquid to the downstream side flow passage portion.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: October 6, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Yamada, Yohei Nakamura, Yoshiyuki Nakagawa, Naozumi Nabeshima
  • Patent number: 10792913
    Abstract: An inkjet printing apparatus includes a print head ejecting ink, a tank reserving ink to be supplied to the print head; and a joint unit being capable of connecting the print head and the tank to each other. The inkjet printing apparatus further includes a detecting unit detecting a position of the joint unit, which is moved by a drive source, with respect to the print head.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: October 6, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Atsushi Kohnotoh
  • Patent number: 10786968
    Abstract: The present invention has an object to provide an ink supply tube having an excellent stress crack resistance during sliding while having a high gas barrier property. According to the present invention, an ink supply tube is provided, which includes an inner layer contacting with an ink, an intermediate layer containing at least one layer, and an outer layer, wherein the intermediate layer is a gas barrier layer formed of an ethylene-vinyl alcohol copolymer resin, and an oxygen concentration within a circular region that has a diameter of 100 m and is centered at the gas barrier layer is 2 to 9 atm %.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: September 29, 2020
    Assignee: JUNKOSHA INC.
    Inventor: Masato Yotsuya
  • Patent number: 10782354
    Abstract: A low voltage threshold adjusting method is provided and includes the following steps: detecting whether a present voltage is lower than a low voltage threshold; detecting whether a present current exceeds a preset current threshold in response to that the present voltage is lower than the low voltage threshold; detecting whether a present temperature exceeds a preset temperature in response to that the present current exceeds the preset current threshold; checking whether a current state of charge (SOC) is higher than a preset SOC in response to that the present temperature does not exceed the preset temperature; and decreasing the low voltage threshold in response to that the current SOC is higher than the preset SOC.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: September 22, 2020
    Assignee: Acer Incorporated
    Inventor: Chu-Hsiang Hsu
  • Patent number: 10766270
    Abstract: A liquid supply unit includes a pressure chamber configured to store the liquid, a first supply passage allowing communication between a liquid storage container and the pressure chamber, a second supply passage allowing communication between a liquid injection head and the pressure chamber, and a valve mechanism configured to operate according to a pressure state of the pressure chamber. The valve mechanism prohibits the inflow of the liquid from the first supply passage in a first state where the pressure chamber is within the range of a supply negative pressure, allows the inflow of the liquid from the first supply passage in a second state where the pressure chamber is at a pressure lower than the supply negative pressure, and releases the pressure in the pressure chamber in a third state where the pressure chamber is at a pressure higher than the supply negative pressure by a predetermined value.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: September 8, 2020
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Daisuke Eto
  • Patent number: 10759180
    Abstract: A liquid discharge device includes: a tank including a second liquid chamber connectable to a cartridge having a first liquid chamber storing a liquid; a head; and a controller configured to: discharge ink from the head based on a recording instruction; receive a second signal from a liquid level sensor when a position of the liquid level in the second liquid chamber is less than a predetermined position after the ink is discharged based on the recording instruction; after receiving the second signal, determine whether the cartridge is installed in an installation case; based on determining that the cartridge is installed in the installation case after receiving the second signal from the liquid level sensor, accept a maintenance process; and based on receiving the first signal from the liquid level sensor, perform the maintenance process.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: September 1, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Kenta Horade
  • Patent number: 10759181
    Abstract: According to an aspect of the present invention, an inkjet printing apparatus includes a print head having an ejection opening surface on which ejection openings for ejecting ink are formed, a tank storing ink to be supplied to the print head, a supply flow path for supplying the ink from the tank to the print head, a collection flow path for collecting the ink from the print head to the tank, a supply pump provided in the supply flow path to supply the ink from the tank to the print head, a tank decompression pump which decompresses the inside of the tank, and a control unit which controls to drive the supply pump and the tank decompression pump to fill the collection flow path with ink.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: September 1, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Tokisawa, Yumi Mukoyama, Kyoshiro Okude, Takashi Abe, Takahiro Kiuchi
  • Patent number: 10759182
    Abstract: A liquid ejection apparatus includes an ejection port ejecting a liquid, a pressure chamber storing the liquid, an element generating energy for ejecting the liquid in the pressure chamber, first and second tanks which can store the liquid, a flow passage establishing communication between the first and second tanks through the pressure chamber, a switching unit switching a flowing direction of the liquid in the flow passage between a first direction from the first tank to the second tank and a second direction being opposite to the first direction, and a pressure compensation unit. When a pressure in a downstream side flow passage portion downstream of the pressure chamber has a predetermined pressure or below, the pressure compensation unit compensates for reduction in pressure in the downstream side flow passage portion by supplying the liquid to the downstream side flow passage portion.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: September 1, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Yamada, Yohei Nakamura, Yoshiyuki Nakagawa, Naozumi Nabeshima
  • Patent number: 10752005
    Abstract: When printing is performed by ejecting an ink from heads of a printer, a CPU drives a pump and performs main tank-side circulation processing that circulates the ink in a main tank, a tank-side supply flow path, a first bypass flow path and a tank-side circulation flow path. Therefore, a printer can perform the main tank-side circulation processing without waiting for the end of the printing, and it is possible to quickly replenish the sub tank with the ink that decreases during the printing.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: August 25, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Seiji Shimizu
  • Patent number: 10744780
    Abstract: A printer has a recording head, a relay container from which ink is supplied to the recording head, and to which the ink is supplied from a terminal container, a pressurizing pump and a depressurizing pump for supplying the ink from the terminal container to the relay container, and a control unit. The control unit calculates an estimated consumption amount of the relay container based on the amount of the ink supplied from the relay container to the recording head, and consumed and the amount of the ink supplied from the terminal container to the relay container, and calculates the amount of the ink supplied from the terminal container to the relay container using the minimum value of tolerance of a supply amount of the depressurizing pump.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: August 18, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Shuichi Koganehira, Yasuhiko Kosugi, Tsuyoshi Hayashi, Toshihiro Shinbara, Kaoru Koike, Ryoji Fujimori
  • Patent number: 10737489
    Abstract: A liquid ejection head includes a plurality of pressurizing chambers connected to a plurality of ejection holes, a plurality of first individual flow paths connected to the plurality of pressurizing chambers, a plurality of second individual flow paths and a plurality of third individual flow paths, a first common flow path is connected in common to the plurality of first and plurality of second individual flow paths, and a second common flow path is connected in common to the plurality of third individual flow paths. The first and second individual flow paths are connected to the same pressurizing chamber, the first individual flow path is connected to the first common flow path in an opening end portion, compared to the second individual flow path. The first individual flow path is located opposite to a side where the ejection hole is open outward, compared to the second individual flow path.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: August 11, 2020
    Assignee: KYOCERA CORPORATION
    Inventor: Daisuke Hozumi
  • Patent number: 10737503
    Abstract: According to one embodiment, a fluid circulation apparatus includes a first tank to store fluid to be supplied to a fluid ejection head, a circulation path including a first flow path portion to provide fluid from the first tank to a supply port of the fluid ejection head, and a second flow path portion to return fluid from a collection port of the fluid ejection head to the first tank, a bypass flow path that connects the supply port to the collection port outside of the fluid ejection head, and a buffer tank in the bypass flow path.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: August 11, 2020
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kazuhiro Hara, Taiki Goto
  • Patent number: 10737502
    Abstract: According to one embodiment, a fluid circulation apparatus includes a first tank to store fluid to be supplied to a fluid ejection head, a circulation path including a first flow path portion to provide fluid from the first tank to a supply port of the fluid ejection head, and a second flow path portion to return fluid from a collection port of the fluid ejection head to the first tank, a bypass flow path to connect the supply port to the collection port outside of the fluid ejection head, and a pressure sensor configured to measure pressure of the bypass flow path.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: August 11, 2020
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Taiki Goto, Kazuhiro Hara
  • Patent number: 10717295
    Abstract: A liquid ejecting apparatus includes: a liquid ejecting head including a liquid chamber which communicates with a nozzle; a supply flow path having a first end connected to a liquid supply source and a second end connected to the liquid chamber; a first circulation flow path having a first end connected to the liquid chamber and a second end connected to a first connecting section in the supply flow path; a supply pump provided in the supply flow path; a first pressure regulating valve provided between the first connecting section and the liquid ejecting head in the supply flow path; a second pressure regulating valve provided in the first circulation flow path; a circulation pump provided in the first circulation flow path and configured to circulate the liquid in a downstream direction; and an opening mechanism configured to forcibly open the first pressure regulating valve.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: July 21, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Masaru Kumagai, Yukihiro Hanaoka
  • Patent number: 10717286
    Abstract: A plug member is a plug member for covering a liquid injection port for injecting liquid to a liquid container portion of a liquid ejecting apparatus. The plug member includes an elastically deformable plug body, and a holding member that has a higher rigidity than the plug body and is for holding the plug body. The plug body includes a lid part for covering the liquid injection port and a barrel part extending from the lid part to the liquid container portion. The barrel part includes an end portion forming an opening at a side opposite to the lid part, and the holding member includes an engaging portion engageable with a shaft portion for rotating the holding member and a support portion that is provided at an engaging portion side of the end portion and is for supporting the end portion.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: July 21, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Shoma Kudo, Naomi Kimura
  • Patent number: 10703111
    Abstract: A degassing apparatus includes a hollow fiber disposed on a supply path for a liquid, the hollow fiber including a gas permeable film permeable to dissolved gas in the liquid. The liquid is refluxed and brought into contact with a hollow interior or exterior of the hollow fiber, and a side of the hollow fiber not in contact with the liquid is depressurized to allow the dissolved gas in the liquid to permeate the depressurized side. The degassing apparatus further includes a clogging detector that detects clogging of the hollow interior of the hollow fiber caused by a component in the liquid.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: July 7, 2020
    Assignee: Konica Minolta, Inc.
    Inventor: Satoru Osawa
  • Patent number: 10688792
    Abstract: A liquid ejection head includes a recording element substrate including an ejection orifice for ejecting liquid, a pressure chamber provided with an energy generating element for generating energy used to eject liquid, a liquid supply path for supplying liquid to the pressure chamber, and a liquid collecting path for collecting liquid from the pressure chamber. The liquid supply path, the pressure chamber, and the liquid collecting path of the recording element substrate constitute a part of a circulation path in which liquid flows in the order mentioned. The flow resistance RIn of a flow path including the liquid supply path at a supply side is greater than the flow resistance ROut of a flow path including the liquid collecting path at a collection side.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: June 23, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshiyuki Nakagawa
  • Patent number: 10688802
    Abstract: A diaphragm pump, a pump unit and an inkjet printer are provided. A housing of the diaphragm pump includes: a circular supporting groove portion for supporting a supported portion, and a passage opening for passing the supported portion to the supporting groove portion in a direction indicated by an arrow, where a shape of an outer edge of a cross section of the supported portion orthogonal to the direction indicated by an arrow is a shape of an outer edge of a circle in which a part of the outer edge is missing. A width of the passing opening at a coupling portion of the supporting groove portion and the passing opening is greater than or equal to a minimum width of the supported portion in the direction orthogonal to the direction indicated by the arrow and smaller than a maximum width of the supported portion in the relevant direction.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: June 23, 2020
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Toshihiro Kimura
  • Patent number: 10682861
    Abstract: A cartridge for storing and dispensing liquid for use with an inkjet printer includes a reservoir for storage of the liquid and an outlet for dispensing the liquid. The reservoir has a reinforcing structure and maintains a predetermined separation. The reinforcing structure separates an internal space of the reservoir into a first and second chamber. The reinforcing structure provides a fluid communication path between the chambers. The reinforcing structure has first and second portions of wall that partially defining the first and second chambers. The reinforcing structure has a wall partially defining the fluid communication path. The first and second portions of the wall have an arcuate profile. The first and second chambers have respective first and second widths. The fluid communication path has a third width which is less than the first or second widths.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: June 16, 2020
    Assignee: VIDEOJET TECHNOLOGIES INC.
    Inventors: Robert Smith, Salhadin Omer
  • Patent number: 10675863
    Abstract: An ink jet printing device for customized printing of images on a face of a sheet material includes a frame with a top surface defining a running plane for a face of the sheet material, with guides transverse to the running direction of the material, a printing unit that can move along the guides and has a printing head therein, a supply source supplying the printing head with printing ink, and a movement system driving the printing unit along the guides. The printing head faces the running plane for depositing the ink on the sheet material, and the supply source includes a secondary reservoir, mounted in the printing unit and in fluid connection with the head, and a main reservoir in fluid connection with the secondary reservoir for refilling the secondary reservoir and maintaining the level of ink above a predetermined threshold value, ensuring supply to the printing head.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: June 9, 2020
    Inventor: Giuseppe Capoia
  • Patent number: 10668729
    Abstract: There is provided a printer including: a liquid jetting head; a receiving section; a waste-liquid storing section; a connecting channel connecting the receiving section and the waste-liquid storing section; a pump; and a controller. The controller executes: printing; recovering nozzles; discharging the liquid, which is present in at least one of the receiving section and the connecting channel, to the waste-liquid storing section, after the recovering of the nozzles. Under a condition that there is no input of the print data before the discharging of the liquid, the controller executes the discharging of the liquid continuously after the recovering of the nozzles; under a condition that there is an input of the print data before the discharging of the liquid, the controller executes the printing after the recovering of the nozzles and then executes at least a part of the discharging of the liquid after the printing.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: June 2, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Shotaro Iida
  • Patent number: 10668723
    Abstract: A liquid ejection head includes a plurality of pressurizing chambers connected to a plurality of ejection holes, a plurality of first individual flow paths connected to the plurality of pressurizing chambers, a plurality of second individual flow paths and a plurality of third individual flow paths, a first common flow path is connected in common to the plurality of first and second individual flow paths, and a second common flow path is connected in common to the plurality of third individual flow paths. The first and second individual flow paths are connected to the same pressurizing chamber, the first individual flow path is connected to the first common flow path on a side of an opening end portion, compared to the second individual flow path. The first individual flow path is located opposite to a side where the ejection hole is open outward, compared to the second individual flow path.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: June 2, 2020
    Assignee: Kyocera Corporation
    Inventor: Daisuke Hozumi
  • Patent number: 10654278
    Abstract: An inkjet recording apparatus of the present disclosure includes a recording head, a supply unit, a supply path, and a circulation path. The supply unit supplies liquid to the recording head. The liquid passes through the supply path to be supplied from the supply unit to the recording head. The liquid passes through the circulation path to return from the recording head to the supply unit. The supply path is provided with a supply coupling, and the circulation path is provided with a circulation coupling. Such part of the supply path as is located on an upstream side with respect to the supply coupling and such part of the circulation path as is located on a downstream side with respect to the circulation coupling are connected to each other by the bypass path which is switchable between a communicating state and a cut-off state.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: May 19, 2020
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Masahiro Kashimoto