Of Ejector Patents (Class 347/9)
  • Patent number: 10369786
    Abstract: A drop-on-demand printing method comprising performing the following steps in a printing head: discharging a first primary drop (x21A) of a first liquid to move along a first path; discharging a second primary drop (x21B) of a second liquid to move along a second path; controlling the flight of the first primary drop (x21A) and the second primary drop (x21B) to combine the first primary drop with the second primary drop into a combined drop (x22) at a connection point (x32) within a reaction chamber within the printing head so that a chemical reaction is initiated within a controlled environment of the reaction chamber between the first liquid of the first primary drop and the second liquid of the second primary drop; and controlling the flight of the combined drop (x22) through the reaction chamber along a combined drop path such that the combined drop (x22), during movement along the combined drop path starting from the connection point is distanced from the elements of the printing head.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: August 6, 2019
    Inventor: Piotr Jeuté
  • Patent number: 10350919
    Abstract: A large format printer performs serial printing on a medium which is greater than or equal to A3 short side width. The large format printer includes a print head which performs printing in accordance with variations in a drive voltage signal which is applied to a drive element, a control circuit which generates a drive signal (an example of the drive voltage signal), and a cable which is greater than or equal to 1 m and transmits a power voltage signal (an example of a constant voltage signal) and the drive voltage for driving the print head from the control circuit to the print head. An overshooting prevention circuit which renders a voltage (a drive voltage) of the drive signal which is applied to the drive element less than or equal to a voltage (a power voltage) of the power voltage signal is disposed in the print head.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: July 16, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Kazushi Kodaira
  • Patent number: 10286655
    Abstract: A drive circuit includes a first transistor pair, a second transistor pair, a feeder line 290g for a ground Gnd, a feeder line 290a to which a voltage VA is applied, a feeder line 290b a voltage VB is applied, and capacitors Cag and Cba, and the first transistor pair amplifies a signal ain within a range from the ground Gnd to the voltage VA, and the second transistor pair amplifies the signal ain within a range from the voltage VA to the voltage VB, and one end of the capacitor Cag is connected to the feeder line 290g, the other end of the capacitor Cag is connected to the feeder line 290a, one end of the capacitor Cba is connected to the feeder line 290a, and the other end of the capacitor Cba is connected to the feeder line 290b.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: May 14, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Akira Abe
  • Patent number: 10245826
    Abstract: A method of ink jet printing wherein liquid ink is supplied to a plurality of nozzles via a common ink supply passage, and actuators associated with the nozzles are controlled to cause ink droplets to be expelled from the nozzles in accordance with image information to be printed, characterized by the steps of detecting a situation where a number of the nozzles which are connected to the common ink supply passage and are presently active but stop printing within a given time interval is larger than a given maximum number; if that situation is detected, activating at least one actuator associated with one of the nozzles that stop printing with sub-threshold agitation pulses which cause an agitation of a meniscus in the nozzle without a droplet being expelled.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: April 2, 2019
    Assignee: OCÉ HOLDING B.V.
    Inventors: Robert E. J. Van Den Bercken, Johannes A. T. Gollatz
  • Patent number: 10239328
    Abstract: A printing system facilitates the printing of articles of manufacture. The system includes an array of printheads, a support member positioned to be parallel to a plane formed by the array of printheads, a member movably mounted to the support member, an actuator operatively connected to the movably mounted member, an object holder configured to mount to the movably mounted member, and a controller operatively connected to the plurality of printheads and the actuator. The controller is configured to operate the actuator to move the object holder past the array of printheads and to operate the plurality of printheads to eject marking material onto objects held by the object holder as the object holder passes the array of printheads. The support member and printhead array are oriented vertically to enable the printing system to be installed in a vertical cabinet that provides a small footprint in a non-production environment.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: March 26, 2019
    Assignee: Xerox Corporation
    Inventors: Wayne A. Buchar, James J. Spence, Jack G. Elliot, Michael F. Leo
  • Patent number: 10232608
    Abstract: Droplet ejection amounts are adjusted during a process of generating raster data, and this process is realized by a control circuit. The sum total of droplet ejection amounts exceeds 100% as for three nozzles while the sum total of droplet ejection amount is below 100% as for one nozzle, which is repeated at some nozzle numbers. The sum total of droplet ejection amounts is 100% in a normal portion. As such, in the case where this sum total is taken as a reference amount, the sum total of droplet ejection amounts for each raster in a region where overlap printing is performed is sequentially changed to be equal to or greater than the reference amount in the normal region where the overlap printing is not performed, and to be equal to or smaller than the above reference amount.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: March 19, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Tomonaga Hasegawa
  • Patent number: 10232624
    Abstract: An ink-jet printer includes a conveyor, a recording head, a power supply, an ink receiver, a command receiver, and a controller. The controller executes: determining an ink amount to be discharged; determining a voltage value of a drive voltage and the number of ink droplets; raising the drive voltage; executing a flushing process, executing a printing process. The controller determines the voltage value such that the drive voltage becomes higher when the determined ink amount is not less than a first threshold value than when the determined ink amount is less than the first threshold value, and determines the number of ink droplets such that the number of ink droplets becomes larger when the determined ink amount is not less than a second threshold value than when the determined ink amount is less than the second threshold value.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: March 19, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Satoru Arakane
  • Patent number: 10226954
    Abstract: An ink jet apparatus includes a head, a circuit substrate, a cover frame, a heat sink, a fan, and a wall section. The cover frame supports the circuit substrate that has a drive circuit that drives the head inside of the cover frame and has a through hole. The heat sink that dissipates heat generated in the circuit substrate is disposed inside of the cover frame and has a part that is in direct or indirect contact with the circuit substrate. The fan generates air flow and is arranged such that the fan and the heat sink face to each other via the through hole. The wall section is disposed inside of the cover frame such that the air flow is not directly blown against the drive circuit and the air flow having changed a direction after blown against the heat sink is not blown against the drive circuit.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: March 12, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Koji Kitazawa, Toshio Kumagai
  • Patent number: 10220622
    Abstract: A plate-like detection plate portion that undergoes strain due to contact with an object is used for detecting the presence of an object that can come into contact with a liquid ejecting unit with relative movement between a medium and the liquid ejecting unit, and is provided with a piezoelectric film sensor that outputs an electric signal corresponding to strain of the detection plate portion. The piezoelectric film sensor includes a detection film portion in which a piezoelectric element that causes a voltage change corresponding to the strain is arranged, and an output circuit portion that converts the voltage change of the detection film portion into an electric signal and outputs the electric signal. The output circuit portion is provided on a second plate surface, which is a rear surface of a first plate surface facing the medium, of the detection plate portion.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: March 5, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Kenji Otokita, Seiji Ihara
  • Patent number: 10220612
    Abstract: A drive signal adjustment method adjusts a drive signal including a drive pulse to be supplied to a drive element of a liquid ejecting head. The liquid ejecting head includes a nozzle, a pressure generation chamber communicating with the nozzle, and the drive element generating a pressure change in a liquid inside the pressure generation chamber. The drive pulse includes an expansion element, an expansion maintenance element, a contraction element, a contraction maintenance element, and an expansion restoration element. A plurality of test patterns are printed by using adjusting drive pulses including modification values in which either one or both of a time of the contraction maintenance element and a period of the drive pulse are modified. The adjusting drive pulse corresponding to a specific test pattern selected from among the plurality of test patterns set as the drive pulse at the time of printing.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: March 5, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Seiji Izuo
  • Patent number: 10223046
    Abstract: An image processing apparatus includes a timing obtaining unit that obtains an interruption timing at which printing is interrupted in a printer that transports a printing medium in a first direction and performs printing on the printing medium, a division computing unit that arranges, at a position corresponding to the timing in a target area in which plural images are to be arranged, a virtual straight line extending through the target area in a second direction perpendicular to the first direction, an arrangement computing unit that separates and arranges the plural images in the target area divided by the virtual straight line into a first region downstream and a second region upstream in the first direction, and a data creating unit that creates and outputs, to the printer, first print data specifying the images arranged in the first region and second print data specifying the images arranged in the second region.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: March 5, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Kanji Kamijima, Shusuke Kibune
  • Patent number: 10214011
    Abstract: A liquid jetting apparatus includes: a first head chip having first nozzles arranged in a nozzle arrangement direction; a second head chip having second nozzles arranged in the nozzle arrangement direction, and being arranged to overlap at least partially with the first head chip in an orthogonal direction orthogonal to the nozzle arrangement direction; a controller configured to control the first head chip and the second head chip to jet liquid from the first nozzles and the second nozzles; and power sources having different voltages, respectively. Each of the first nozzles and the second nozzles is driven by voltage supplied from one of the power sources, and the first head chip has a first overlapping portion and the second head chip has a second overlapping portion overlapping with the first overlapping portion in the orthogonal direction.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: February 26, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Masato Muto
  • Patent number: 10207518
    Abstract: A method for compensating for failed printing nozzles in an inkjet printing machine uses a computer to provide an increased ink drop volume of adjacent nozzles. All existing printing nozzles are measured regarding print failure and deviation of a printed dot beyond a specific threshold, so that the printing nozzles are marked either as functioning, failed, or printing a dot deviating in a direction transverse to the printing direction, and the results are saved on the computer. The computer hides all functioning printing nozzles and marks all remaining isolated printing nozzles as failed nozzles. The computer groups adjacent remaining printing nozzles by marking nozzles printing a dot deviating in a direction transverse to the printing direction as functioning printing nozzles contributing to the compensation or as failed printing nozzles in accordance with a rule, and the computer compensates for all printing nozzles having been marked as failed.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: February 19, 2019
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Hans Koehler, Ralf Tita
  • Patent number: 10189261
    Abstract: A liquid discharge apparatus includes: a wiper; a wiping surface for wiped with the wiper; a plurality of nozzles provided in the wiping surface; a piezoelectric element for discharging inks from the nozzles; and a carriage unit and a cleaning unit configured to cause the wiper and the wiping surface to relatively move. In a moving direction of the wiper with respect to the wiping surface, a distance between a side of the wiping surface on an upstream side in the moving direction and the nozzle disposed on the most upstream side is shorter than a distance between a side of the wiping surface on a downstream side in the moving direction and the nozzle disposed on the most downstream side.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: January 29, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Atsushi Muto
  • Patent number: 10173417
    Abstract: In some examples, a print head includes a plurality of nozzles, a test result register to store a drive bubble detect (DBD) test result for a first nozzle of the plurality of nozzles, and a result-ready register to store a status indication set to a predetermined value provided responsive to storing of the DBD test result in the test result register, where the test result register and the result-ready register are accessible by a control unit outside the print head to evaluate a nozzle condition based on the DBD test result in the test result register.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: January 8, 2019
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Daryl E. Anderson, Eric T. Martin
  • Patent number: 10166782
    Abstract: The positions and widths of a shared printing area and the gradients of printing ratios are made different between front surface printing and back surface printing.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: January 1, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuhiro Yamagata, Junichi Nakagawa, Akitoshi Yamada, Okinori Tsuchiya, Takeru Sasaki
  • Patent number: 10150295
    Abstract: A liquid ejection head includes an energy generating element configured to generate energy used for ejection of a liquid, a print element board including an electroconductive anti-cavitation film provided to cover the energy generating element, and a connection board electrically connected to the anti-cavitation film and including a connection pad electrically connectable from outside.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: December 11, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tokuji Kudo, Chiaki Muraoka, Shimpei Yoshikawa, Yuichiro Akama, Yuji Tamaru, Yosuke Takagi, Takaaki Yamaguchi
  • Patent number: 10144215
    Abstract: An inkjet print head includes an ejection unit having a liquid chamber for holding an amount of liquid, a electromechanical transducer operatively coupled to the liquid chamber for generating a pressure wave in the amount of liquid and a nozzle in fluid communication with the liquid chamber for enabling a droplet of the amount of liquid to be ejected through the nozzle. A method for detecting an operating state of the ejection unit includes the consecutive steps of actuating the electromechanical transducer to generate a pressure wave in the liquid; actuating the electromechanical transducer to suppress a residual pressure wave in the liquid; sensing an amplitude of the residual pressure wave in the liquid; and based on the result of the sensing step determining that the ejection unit is (i) in an operative state if the amplitude of the residual pressure wave is below a threshold or (ii) in a malfunctioning state if the amplitude of the residual pressure wave is above the threshold.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: December 4, 2018
    Assignee: OCE-TECHNOLOGIES B.V.
    Inventors: Marko Mihailovic, Tjerk E. C. Hummel, Johannes M. M. Simons, Hylke Veenstra, Cornelis W. M. Venner, Amol A. Khalate
  • Patent number: 10137681
    Abstract: In an image processing apparatus, a controller generates print data using target image data. The print data represents dot formation states classified for respective pixels. Each dot formation state is classified into a one of a plurality of dot types. The controller determines a dot type from a plurality of dot types including a first type dot and second type dot. The first type dot is formed by a first process for supplying a pressure applying section with a specific signal. The second type dot is formed by a second process that is not for supplying the pressure applying section with the specific signal. The first type dot is to be formed in an edge printing area. The first type dot is not to be formed but the second type dot is to be formed in an interior printing area.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: November 27, 2018
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Yasunari Yoshida
  • Patent number: 10124579
    Abstract: An inkjet printhead including a plurality of printhead dies, each printhead die including at least one crack sense resistor, at least one analog bus connected to each printhead die, and a controller separate from the plurality of printhead dies. The controller is configured to provide a known current to the at least one crack sense resistor of each printhead die in a selectable pattern via the at least one analog bus and to determine whether the printhead dies are cracked based on resulting voltages produced on the at least one analog bus.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: November 13, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Daryl E Anderson, George H Corrigan, Scott A Linn
  • Patent number: 10118417
    Abstract: A print data generating device generates print data printable by a printing device including a feeding unit which feeds continuous forms paper in a scanning direction, a line head which performs print processing on the continuous forms paper fed in the scanning direction, a cutting unit downstream of the line head in the scanning direction that cuts the continuous forms paper, and a direction change execution which executes direction change processing of changing the direction in which the print image is printed by 180 degrees. The print direction of a print image is changed in such a way that an image arrangement area on the print image of the print data, and a print area where the print processing is carried out by the print head in a paper feed acceleration/deceleration zone at the time of cutting the print tape, do not overlap with each other.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: November 6, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Tsunenobu Endo, Taisuke Okawa, Kan Matsuda
  • Patent number: 10114309
    Abstract: To reduce a deviation in a scanning start position in the case where image formation is performed by an electrophotographic scheme in which a scanning speed of laser beam is not uniform on a photoconductor surface. An information processing apparatus includes a generation unit configured to generate a scanning speed profile, which is information about a scanning speed for each main scanning position in an image forming apparatus in which the scanning speed of laser beam is not uniform on a photoconductor surface; and a derivation unit configured to derive a scanning position adjustment amount specifying a distance from a reference position in a main scanning direction of the laser beam to a write start position of laser beam to the photoconductor surface based on the generated scanning speed profile in the main scanning direction.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: October 30, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Daiki Ikari
  • Patent number: 10086625
    Abstract: A system for printing on a multi-dimensional object includes a plurality of print heads, a mounting structure configured to receive an integrated object packaging and holder for an object and to movably mount on a support member, an actuator configured to move the mounting structure along the support member, and a processing device. The system also includes a a non-transitory, computer-readable memory containing programming instructions that are configured to cause the processing device to control a movement of the mounting structure relative to the plurality of print heads, and operate the plurality of print heads to eject marking material onto an object mounted on the mounting structure.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: October 2, 2018
    Assignee: Xerox Corporation
    Inventors: Jason Matthew LeFevre, Douglas K. Herrmann, Paul McConville, Chu-heng Liu
  • Patent number: 10081177
    Abstract: An ink-jet recording apparatus includes: a recording head including nozzles and driving elements corresponding to the nozzles respectively; a controller; and a head driving circuit connected to the controller by a first signal line, a second signal line, and a third signal line through which a clock signal including edges is transmitted, the head driving circuit connected electrically to the driving elements. Each of the driving elements jets an ink from one of the nozzles corresponding thereto by an amount corresponding to driving voltage applied from the head driving circuit. The controller repeatedly executes output processing in which pattern signals indicating patterns of the driving voltage are continuously outputted to the first signal line while being synchronized with the clock signal and selection signals are continuously outputted to the second signal line while being synchronized with the clock signal.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: September 25, 2018
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Satoru Arakane, Shoji Sato
  • Patent number: 10082990
    Abstract: A printhead assembly includes ink ejection devices having nozzles, and processing electronics in communication with the ink ejection devices. The processing electronics implement logic to receive nozzle data for controlling the ink ejection devices, receive error detection data associated with the nozzle data, detect errors associated with the nozzle data using the error detection data, and generate fault data for the detected errors.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: September 25, 2018
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Eric T Martin, Christopher Hans Bakker
  • Patent number: 10076902
    Abstract: Provided are a printing device and a print element substrate having a detection element row provided in correspondence to an ejection port row and capable of suppressing an increase in a length in an ejection port row direction. For that purpose, a row selection circuit 117 is provided in a detection element circuit 108, and a row of the detection element circuit is selected by row selection signals A0 and A1 transmitted through a common wiring.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: September 18, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hideo Kanno, Ryo Kasai
  • Patent number: 10071556
    Abstract: An inkjet printing apparatus, comprising: a carriage to move in a 1st direction; a recording head; an ink reservoir; an ink receiver; and a waste liquid reservoir configured to be connected to the ink receiver to let the ink move between the ink receiver and the waste liquid reservoir, wherein: the ink reservoir is disposed not to overlap with the carriage in a 2nd direction perpendicularly intersecting with the 1st direction and an up and down direction, and at least a part of the ink reservoir is disposed at a position outside of a moving range of the carriage in the 1st direction; and in the 1st direction, the waste liquid reservoir is disposed to overlap with the ink reservoir and is disposed at a position outside of the moving range of the carriage.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: September 11, 2018
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yoshinori Osakabe, Tomohiro Wada, Tomohisa Higuchi
  • Patent number: 10065430
    Abstract: A print unit prints by ejecting fluid droplets from a plurality of nozzles while moving in a primary scanning direction relative to a print medium. An ejection inspection unit inspects fluid droplet ejection by a group of target nozzles, which are part of an ejection nozzle subset obtained by dividing the nozzles according to the number of nozzles required to form the smallest printing width in the secondary scanning direction. A control unit controls the print unit and the ejection inspection unit, and selects the group of target nozzles in the ejection nozzle subset and performs the ejection inspection each time a specific amount of printing is completed.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: September 4, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Yosuke Hatao
  • Patent number: 10059097
    Abstract: A method of generating print data includes: generating dot map data in which pieces of ink droplet discharging data for creating dots forming a printed image are arranged, for respective nozzles, at positions corresponding to positions of the dots; performing first correction in which positions of the pieces of ink droplet discharging data in the dot map data are corrected in a scanning direction based on position shift information that indicates an amount of shift of actual dot positions from intended dot positions formed in accordance with the dot map data, and corrected dot map data is generated; and performing second correction in which the positions of the pieces of ink droplet discharging data in the corrected dot map data are corrected in the scanning direction based on the corrected dot map data and information about a combination of nozzles used for forming the printed image.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: August 28, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Eishin Yoshikawa
  • Patent number: 10046562
    Abstract: A wide array printhead module includes a plurality of printhead die, each of the printhead die includes a number of nozzles. The nozzles form a number of primitives. A nozzle firing heater is coupled to each of the nozzles. An application specific integrated circuit (ASIC) controls a number of activation pluses that activate the nozzle firing heaters for each of the nozzles associated with the primitives. The activation pulses are delayed between each of the primitives via internal delays and external delays to reduce peak power demands of the printhead die. The ASIC determines the internal delays within each printhead die.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: August 14, 2018
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Peter James Fricke, Michael W Cumbie, Scott A Linn
  • Patent number: 10035360
    Abstract: A printer including a first liquid discharger, a second liquid discharger, a curing unit, and a controller is provided. The first and second liquid dischargers discharge active-energy-ray-curable colored and transparent liquids, respectively. The curing unit emits an active energy ray. The controller causes the first liquid discharger to scan multiple times and discharge the colored liquid on a medium, causes the curing unit to cure the colored liquid on the medium after each scan of the first liquid discharger to print a colored image with the colored liquid on the medium, causes the second liquid discharger to discharge the transparent liquid on the colored image, causes the curing unit to cure the transparent liquid on the colored image to form a transparent layer on the colored image, and controls a thickness of the transparent layer in accordance with the number of scan of the first liquid discharger.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: July 31, 2018
    Assignee: Ricoh Company, Ltd.
    Inventor: Daisuke Mezaki
  • Patent number: 10011122
    Abstract: Provided is a printing apparatus that includes a support unit which has a support surface for supporting a medium and moves in a movement direction, and a print unit configured to perform printing on the medium supported by the support unit. The support surface includes a first side and a second side that is shorter in length than the first side and extends in a direction intersecting with the first side. The support unit can be displaced to be in a first state where the first side is so arranged as to be along the movement direction and in a second state where the first side is so arranged as to be along a direction intersecting with the movement direction.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: July 3, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Akira Mashima
  • Patent number: 10000066
    Abstract: A liquid discharge head includes a nozzle, an individual liquid chamber, a common liquid chamber, a fluid restrictor, a circulation channel, a circulation fluid restrictor, and a plurality of laminated plate members. The nozzle discharges liquid. The individual liquid chamber is communicated with the nozzle. The common liquid chamber supplies the liquid to the individual liquid chamber. The fluid restrictor is disposed between the individual liquid chamber and the common liquid chamber. The circulation channel is communicated with the individual liquid chamber. The circulation fluid restrictor is disposed between the individual liquid chamber and the circulation channel. The plurality of laminated plate members constitutes the fluid restrictor, the individual liquid chamber, and the circulation fluid restrictor. A single plate member of the plurality of laminated plate members defines a fluid resistance value of the fluid restrictor and a fluid resistance value of the circulation fluid restrictor.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: June 19, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventor: Takayuki Nakai
  • Patent number: 9987847
    Abstract: An inkjet printing apparatus includes a transport speed detector for detecting transport speed of a printing medium, an inkjet head having a plurality of discharge portions for discharging ink droplets from the discharge portions for printing, and a flushing controller for carrying out discrete flushing from the discharge portions. For an acceleration area of the printing medium where the transport speed detector detects an increase in transport speed before printing, a first discharge rate is set as discharge rate of the ink droplets per unit time for the discharge flushing. For a constant speed area of the printing medium where the transport speed detector detects a substantially constant transport speed during printing, a second discharge rate lower than the first discharge rate is set as discharge rate of the ink droplets per unit time for the discharge flushing.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: June 5, 2018
    Assignee: SCREEN HOLDINGS CO., LTD.
    Inventor: Susumu Takahashi
  • Patent number: 9981466
    Abstract: A drive circuit includes an amplification unit that amplifies a signal and outputs the amplified signal toward a node; and a voltage output unit that outputs a voltage responding to the signal toward the node during a predetermined period of a part or all of a period in which a magnitude of a voltage change of the signal is less than or equal to a threshold. The amplification unit includes a differential amplifier, a selector, and transistors, and the voltage output unit includes a linear amplifier and a switch.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: May 29, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Akira Abe
  • Patent number: 9981467
    Abstract: A method of printing includes identifying vertical edges in a halftone image. The method also includes determining whether a lightness of color of a first predetermined area to a left side of a respective vertical edge is substantially equal to, less than, or greater than the lightness of color of a second predetermined area to a right side of the respective vertical edge. The method also includes categorizing respective vertical edges left vertical edges, right vertical edges, and neutral vertical edges to prioritize a print direction thereof.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: May 29, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Barret Kammerzell, Antonio Gracia Verdugo
  • Patent number: 9969171
    Abstract: An ink-jet printer includes a conveyor, a recording head, a power supply, an ink receiver, a command receiver, and a controller. The controller executes: determining an ink amount to be discharged; determining a voltage value of a drive voltage and the number of ink droplets; raising the drive voltage; executing a flushing process, executing a printing process. The controller determines the voltage value such that the drive voltage becomes higher when the determined ink amount is not less than a first threshold value than when the determined ink amount is less than the first threshold value, and determines the number of ink droplets such that the number of ink droplets becomes larger when the determined ink amount is not less than a second threshold value than when the determined ink amount is less than the second threshold value.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: May 15, 2018
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Satoru Arakane
  • Patent number: 9962930
    Abstract: A printing apparatus includes a reaction liquid application portion that applies dots of reaction liquid onto a recording medium by applying the reaction liquid to pixels in a pixel array in which rasters in which a plurality of pixels are lined up in a first direction are lined up in a second direction which is orthogonal to the first direction and an ink application portion that applies ink dots to the recording medium by applying ink which includes a color material that is coagulated using an action of the reaction liquid to the pixels of the pixel array, in which the reaction liquid application portion applies the reaction liquid dots by being separated by one pixel or more in the first direction and the second direction.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: May 8, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Tsutomu Sasaki, Satoru Katagami, Kazuyoshi Tanase
  • Patent number: 9956779
    Abstract: A liquid ejection head includes a first ejection opening group in which a plurality of ejection openings that eject a particular kind of liquid onto a print medium are arranged in a predetermined direction, and a second ejection opening group that is provided along the first ejection opening group to eject the particular kind of liquid onto the print medium. The first ejection opening group is provided upstream of the second ejection opening group with respect to a relative moving direction between the print head and the liquid ejection head. The plurality of ejection openings included in the first ejection opening group are disposed in the predetermined direction in a zigzag shape, and the liquid ejected from the ejection openings adjacent to each other in the predetermined direction come in contact with each other on the print medium.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: May 1, 2018
    Assignees: Canon Kabushiki Kaisha, Oce Printing Systems GmbH & Co. KG
    Inventors: Hidehisa Mabuchi, Yoshitomo Marumoto, Takayuki Ushiyama, Benno Petschik, Andreas Paul
  • Patent number: 9944091
    Abstract: A printer control section arranged to control a printhead, is operable to cause the printhead to: perform a plurality of passes over a swath of a print medium, the plurality of passes including first and second treatment passes; apply treatment to the print medium in each of the treatment passes, the treatment in each treatment pass being applied according to a respective treatment mask, wherein each treatment mask indicates a corresponding set of pixels to which the treatment may be applied in a pass to which the treatment mask is applied, the treatment mask having a weight indicative of the proportion of pixels in the corresponding set of pixels, and the treatment masks of the first and second passes are such that a weight of the first treatment mask is different from a weight of the second treatment mask.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: April 17, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Antonio Gracia Verdugo, Joan Albert Jorba Closa, Marina Cantero Lazaro
  • Patent number: 9937710
    Abstract: A liquid ejecting apparatus includes a liquid ejecting head that is provided with a plurality of nozzle openings that discharge a liquid, and pressure generation units that generate pressure changes in pressure generation chambers that are respectively in communication with the nozzle openings, a detection unit that detects a discharge fault of liquid droplets of the liquid ejecting head for each of the nozzle openings, and a control unit that controls the pressure generation units, in which the control unit has a discharge prohibition mode in which the driving of a pressure generation unit that corresponds to a nozzle opening in which a discharge fault is detected, is prohibited after the corresponding discharge fault is detected while recording is underway.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: April 10, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Junhua Zhang
  • Patent number: 9919548
    Abstract: A method of slicing and printing multi-color 3D object is provided. The method includes following steps of: loading a coordinate information and a color information of a multi-color 3D object; executing a slicing process to generate a plurality of object printing slices and a plurality of object images; generating a plurality of pollution-blocking printing slices and making each pollution-blocking printing slice partially overlap an edge of the same-layer object printing slice; controlling a modeling nozzle of a multi-color 3D printer to print the object printing slices layer by layer, printing each pollution-blocking printing slice partially overlapping the same-layer object printing slice after the same-layer object printing slice is printed, and controlling a coloring nozzle of the multi-color 3D printer to color each of printed object printing slice after the same-layer pollution-blocking printing slice is printed.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: March 20, 2018
    Assignees: XYZPRINTING, INC., KINPO ELECTRONICS, INC.
    Inventors: Kuo-Yen Yuan, Bo-Yi Wu
  • Patent number: 9919517
    Abstract: Addressing an EPROM on a printhead is described. In an example, a printhead includes an electronically programmable read-only memory (EPROM) having a plurality of cells arranged in rows and columns, each of the cells having a addressing port, a row select port, and a column select port. A conductor is coupled to the addressing portion of each of the plurality of cells. A column shift register is coupled to the column select ports of the plurality of cells, the column shift register having a register location for each column of the plurality of cells and having an input to receive a first input signal. A row shift register is coupled to row select ports of the plurality of cells, the row shift register having a register location for each row of the plurality of cells and having an input to receive a second input signal.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: March 20, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ning Ge, Leong Yap Chia, Wai Mun Wong
  • Patent number: 9895882
    Abstract: A driving device for a liquid ejection head is configured to drive a plurality of piezoelectric elements of a liquid ejection head, the liquid ejection head including a plurality of ejection orifices configured to eject liquid and the plurality of piezoelectric elements configured to generate energy for ejecting liquid from the plurality of ejection orifices. The driving device includes a control circuit unit including storage sections and transfer circuits, and a drive circuit unit including a plurality of individual drive circuit sections. The control circuit unit is an integrated circuit which is different from the drive circuit unit.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: February 20, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Netsu, Yasuyuki Tamura
  • Patent number: 9884494
    Abstract: An inkjet printing machine includes: a paper feeder; a transfer unit having a conveyer belt with a plurality of suction holes formed thereon and transferring a sheet fed by the paper feeder while sucking and holding the sheet on the conveyer belt by suction force generated at the suction holes; inkjet heads discharging ink on the transferred sheet; and a controller performing printing by controlling the above components, wherein the suction holes of the conveyer belt are arranged so that, when the leading edge of the sheet in the transfer direction does not overlap with the suction holes, the trailing edge of the sheet also does not overlap with the suction holes, and the controller controls the paper feeder to feed a sheet at a timing when the leading edge and the trailing edge of the sheet in the transfer direction do not overlap with the suction holes.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: February 6, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Tomohisa Oe
  • Patent number: 9873245
    Abstract: Operations of printing systems are disclosed. According to examples, a deposition sequence for depositing printing fluids onto a substrate location is dynamically controlled. Sub-groups of nozzles in nozzle arrays are selected according to the deposition sequence.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: January 23, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jacint Humet, Eduardo Amela, Jaime Fernandez, Marc Serra Vall
  • Patent number: 9873247
    Abstract: A driving pulse to be applied is changed when an overlapped level of invert timing of driving pulse is large.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: January 23, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuhei Oikawa, Taku Yokozawa, Hiroaki Shirakawa, Mitsutoshi Nagamura, Hiroshi Taira, Satoshi Azuma, Yosuke Ishii, Hiroaki Komatsu
  • Patent number: 9870914
    Abstract: In order to remove from a substrate having a concavo-convex pattern formed on a surface of the substrate, a solid material with which a concave portion of the concavo-convex pattern is filled and which is formed by evaporating a solvent in a sublimable substance solution containing a sublimable substance that sublimates at a temperature equal to or higher than a first temperature, and an impurity that evaporates at a temperature equal to or higher than a second temperature that is higher than the first temperature, the prevent invention provides a substrate processing apparatus and a substrate processing method which heat the substrate to a temperature equal to or higher than the second temperature.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: January 16, 2018
    Assignee: Tokyo Electron Limited
    Inventors: Koji Kagawa, Hisashi Kawano, Meitoku Aibara, Yuki Yoshida
  • Patent number: 9862181
    Abstract: A computer-implemented system for determining ink availability in one or more ink reservoirs in a print system is described. The system includes at least one ink reservoir for each color ink used in the printing system, a print unit associated with each ink reservoir configured to apply a print image including at least one color of ink to a substrate based on print image information, and an ink level monitoring system configured to determine an ink availability in each ink reservoir based on printed image count information including a number of printings of the print image and a total wet ink utilization generated based on a characterization of a print condition and further based on a measured dry ink utilization per area of coverage using the print image information and corrected by an ink usage correction multiplier.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: January 9, 2018
    Assignee: QuadTech, Inc.
    Inventors: Carlo Carnelli, John Seymour, Michael Sisco
  • Patent number: 9862192
    Abstract: A liquid jetting apparatus includes: a head unit including a liquid jetting surface with nozzles; a cap movable between a capping position and an uncapping position; a cap movement device allowing the cap to reciprocate; a driven device; a drive motor driving the cap movement device and the driven device; a first gear transmitting power from the drive motor to the cap movement device; a second gear transmitting the power from the drive motor to the driven device; a switch gear which is moved by the power from the drive motor between a position in which the switch gear engages with the first gear and a position in which the switch gear engages with the second gear; a gear movement device moving the switch gear; a sensor outputting a signal according to driving of the cap movement device; and a controller.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 9, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Mikio Ogawa