Drive Signal Application Patents (Class 347/57)
  • Patent number: 10491767
    Abstract: An image forming apparatus includes: image former forming an image on a sheet; a sheet storage storing the sheet; a sheet feeder feeding the sheet stored in the sheet storage to the image former; a sheet characteristic detector detecting characteristics of the sheet fed by the sheet feeder; and a hardware processor controlling image forming in the image former on the basis of the sheet characteristics detected by the sheet characteristic detector, wherein the sheet feeder feeds a first sheet in order to detect the sheet characteristics by the sheet characteristic detector before forming an image by the image former, and after the sheet characteristic detector has finished detecting the characteristics of the first sheet, the sheet feeder feeds a second sheet on which the image is to be formed by the image former under image forming conditions set on the basis of the detected characteristics of the first sheet.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: November 26, 2019
    Assignee: Konica Minolta, Inc.
    Inventor: Shinya Tanigami
  • Patent number: 10457039
    Abstract: In order to solve a problem that the skew width of a clock when data is transmitted to printheads changes depending on the characteristics of and variations in the respective printheads integrated in a printing apparatus or the operation mode of the printing apparatus, clock skew is adjusted based on a detection result by an error detection circuit integrated in each printhead when the data is transmitted to the printhead. This makes it possible to adjust skew in accordance with the characteristics of the respective printheads or a status change at the time of a printing operation.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: October 29, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tatsuro Watanabe
  • Patent number: 10166771
    Abstract: A liquid ejection method includes ejecting liquid from an ejection opening, using a liquid ejection head including a heating surface configured to heat the liquid and the ejection opening corresponding to the heating surface, by heating the liquid with the heating surface to produce a bubble communicating with air through the ejection opening such that at least a part of the heating surface is exposed to the air through the ejection opening, wherein the liquid is heated with the heating surface for 0.5 microseconds or shorter to produce a bubble communicating with the air through the ejection opening such that at least a part of the heating surface is exposed to the air through the ejection opening, in order to eject the liquid from the ejection opening.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: January 1, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Shinji Kishikawa
  • Patent number: 10118384
    Abstract: A liquid ejecting apparatus includes a drive circuit board on which a drive circuit which outputs a driving signal obtained by amplifying the original driving signal is mounted; an actuator substrate which includes an ejecting unit including a piezoelectric element which is driven by the driving signal, and ejects liquid when the piezoelectric element is driven; and a head unit a head unit on which a relay board which relays the driving signal to the piezoelectric element from the drive circuit board, the actuator substrate, the relay board, and the drive circuit board are mounted, and which is mounted on a carriage which reciprocates in an X direction as a main scanning direction. A mounting face of the drive circuit board is attached to the relay board so as to be placed in a direction which goes along the X direction in the main scanning direction of the carriage.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: November 6, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Akira Abe
  • Patent number: 9931837
    Abstract: An example device in accordance with an aspect of the present disclosure includes modules to communicate an input signal to an ink sample to obtain an ink signal, compare the ink signal to a reference value, and identify an indicator of nozzle chamber operation corresponding to the ink signal. A module may be contained on an inkjet printhead die, such that the device may generate the input signal on the inkjet printhead die.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: April 3, 2018
    Assignee: Hewlett-Packard Development, L.P.
    Inventors: Daryl E Anderson, Eric T Martin, Peter James Fricke, James Michael Gardner
  • Patent number: 9623651
    Abstract: A liquid discharge apparatus includes a power supply potential output section that outputs a first power supply potential, a first and a second switch drive section that generate a first and a second switch drive signal according to a modulation signal of an original drive signal, a first and a second switch that operate according to the first and the second switch drive signal, a rectifying device that is arranged between an output terminal of the power supply potential output section and a terminal of the first switch drive section, a connection node that is electrically connected to the first switch and the second switch, a capacitance element that is arranged between the terminal and the connection node, a signal conversion section that converts a signal which is generated at the connection node, into a drive signal, and a piezoelectric element that is transformed by the drive signal.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: April 18, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Akira Abe
  • Patent number: 9579886
    Abstract: A liquid discharging apparatus includes a modulation portion that generates a modulation signal obtained by pulse-modulating a source signal; an amplifier that includes a gate driver generating an amplification control signal based on the modulation signal, a bootstrap circuit supplying power to the gate driver, a power source circuit supplying power to the gate driver and the bootstrap circuit, and a transistor generating the amplification modulation signal that is obtained by amplifying the modulation signal based on amplification control signal; a low-pass filter that generates the driving signal by demodulating the amplification modulation signal; a piezoelectric element that is displaced by applying the driving signal; and a control portion that controls an operation of the amplifier. The control portion performs a second process of starting an amplification operation of the amplifier after a first process of performing supply of power to the bootstrap circuit.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: February 28, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Takafumi Sano
  • Patent number: 9555629
    Abstract: A liquid discharge substrate according to an embodiment of the present invention includes a plurality of heating elements, a plurality of driving elements, a signal supplying unit which supplies a control signal used to control the plurality of driving elements, and a plurality of delay circuits which delay the control signal. A delay amount of a first delay circuit is different from a delay amount of a second delay circuit.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: January 31, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Shibata, Kazunari Fujii, Takaaki Yamaguchi
  • Patent number: 9498950
    Abstract: A retaining structure of a flexible wiring member includes a flexible wiring member and a retaining member. The flexible wiring member includes a front side wiring electrode formed on a front side of the flexible wiring member and a rear side electrode formed on a rear side thereof, and the flexible wiring member is bonded to the retaining member via the rear side electrode. Such structure may be employed in a liquid discharge head in which wiring and a pressure generator are disposed in an actuator substrate including an electrode. The electrode of the actuator and that of the flexible wiring member are connected, and the flexible wiring member is retained to the actuator or a member joined to the actuator via the retaining structure of the wiring member.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: November 22, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventor: Hirofumi Kobayashi
  • Patent number: 9299959
    Abstract: An ink jet device includes: an ink jet head including a nozzle through which ink droplet is ejected by applying voltage to piezoelectric element; and an ejection control unit controlling ink droplet ejection amount by varying voltage, voltage waveform of the voltage includes: preliminary vibration wave form part for preliminary drive operation of pushing ink toward outer edge of the nozzle to the extent that the droplet is not ejected; and main vibration waveform part for main drive operation of ejecting the droplet through the nozzle after the preliminary drive operation, the ejection control unit performs the preliminary and main drive operations according to the preliminary vibration waveform part and the main vibration waveform part, respectively, and proportion of displacement amount X of the voltage for the preliminary drive operation to displacement amount Y of the voltage for the main drive operation is set to 20%?X/Y?40%.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: March 29, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masashi Goto, Hirotaka Nanno, Masakazu Takata
  • Patent number: 9278150
    Abstract: Microfluidic delivery systems and methods for dispensing a fluid composition into the air comprising microfluidic die and at least one heating element that is configured to receive an electrical signal comprising a certain on-time and wave form to deliver a fluid composition into the air.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: March 8, 2016
    Assignee: The Procter & Gamble Company
    Inventors: Dana Paul Gruenbacher, Stephan Gary Bush, Teck Khim Neo, David S. Hunt, Joseph Edward Schefflin, Steven L Webb, Domenico Giusti, Simon Dodd, Faiz Feisal Sherman
  • Patent number: 8974021
    Abstract: A printing apparatus comprising, a printhead including an element array in which a plurality of printing elements are arrayed, scanning unit configured to reciprocally scan the printhead, driving unit configured to time-divisionally drive the printing elements, conveyance unit configured to convey a printing medium, and setting unit configured to set a driving order, wherein the conveyance unit performs a first conveyance operation of conveying the printing medium by a conveyance amount which is an integer multiple of a width of the group of the time-divisional driving, and a second conveyance operation of conveying the printing medium by a conveyance amount which is not an integer multiple of the width of the group, and the setting unit sets the driving order in the time-divisional driving for each scan based on the conveyance amount by the conveyance unit.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: March 10, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Yazawa, Yuji Konno, Hinako Ojiro, Masashi Hayashi, Toshiyuki Chikuma, Hirokazu Tanaka
  • Publication number: 20150029267
    Abstract: A print head includes upper protective members located at positions corresponding to heat generating resistor elements to protect the heat generating resistor elements, and further, a part of the protective member being eluted to ink when a current flows inside in a state in which the ink is reserved in the pressure chambers. The print head includes a drive element and a logic circuit capable of allowing a current to independently flow in each of the upper protective layers so as to elute a part of the upper protective layer, in which the current flows, to the ink.
    Type: Application
    Filed: July 24, 2014
    Publication date: January 29, 2015
    Inventors: Maki KATO, Takahiro Matsui, Nobuyuki Hirayama, Ichiro Saito, Yuzuru Ishida, Kenji Takahashi, Sadayoshi Sakuma, Norihiro Yoshinari
  • Patent number: 8919930
    Abstract: A jetting module includes a nozzle plate, a thermal stimulation membrane, and an enclosure. Portions of the nozzle plate define a nozzle. The thermal stimulation membrane includes a plurality of pores. The enclosure extends from the nozzle towards the thermal stimulation membrane to define a liquid chamber positioned between the nozzle and the thermal stimulation membrane. The liquid chamber is in fluid communication with each of the nozzle and the plurality of pores. The liquid chamber is spanned by a portion of the thermal stimulation membrane. A source provides a liquid under pressure through the thermal stimulation member with the pressure being sufficient to jet a stream of the liquid through the nozzle after the liquid flows through the thermal stimulation membrane.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: December 30, 2014
    Assignee: Eastman Kodak Company
    Inventors: Michael F. Baumer, Yonglin Xie, Ali G. Lopez
  • Patent number: 8899730
    Abstract: A droplet discharging head includes: a nozzle substrate that includes a nozzle opening to discharge a droplet therethrough; a liquid chamber substrate that includes liquid pressure chambers communicating with the nozzle openings; a vibration plate arranged to face the nozzle substrate with the liquid chamber substrate interposed therebetween; piezoelectric elements that are provided to face the liquid pressure chambers with the vibration plate interposed therebetween and are arranged in a predetermined direction; a driving element provided, in a flip-chip implementation, on a flow path substrate that includes the nozzle substrate, the liquid chamber substrate, the vibration plate, and the piezoelectric elements; and a first reinforcing wire that is disposed to at least one of the flow path substrate and the driving element, has a band shape extending in a direction along a row of the piezoelectric elements, and is connected to a common electrode shared by the piezoelectric elements.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: December 2, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Takeshi Takemoto, Hitoshi Kida
  • Patent number: 8851633
    Abstract: A liquid ejection apparatus including: a head having: nozzles arranged in a nozzle-row direction; and ejection-energy applying portions; a drive IC for driving the ejection-energy applying portions; a control circuit board for controlling the drive IC; a wiring member on which the drive IC is mounted; and a support member for supporting the wiring member. The wiring member extends toward the control circuit board from a connection portion thereof connected to the ejection-energy applying portions, the wiring member having a first wiring portion extending in a first direction intersecting the nozzle-row direction and a second wiring portion extending in a second direction intersecting the first direction. The support member supports at least one of the first wiring portion and the second wiring portion, the at least one being located between the ejection-energy applying portions and the control circuit board.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: October 7, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tomoyuki Kubo, Atsushi Ito, Yusuke Suzuki, Yasuo Kato
  • Patent number: 8841926
    Abstract: The subject matter of the invention is a method for a printing machine with a printing device (5), in particular an inkjet printer, for applying liquid (22) onto a print material, with monitoring of the quantity of liquid in a liquid supply unit (1) by measuring the liquid level (23) with a sequential controller, wherein the measurement of the liquid level (23) is performed by a device (11), which detects the presence of liquid at the output of the printing device (5). Another subject matter of the invention is a liquid supply unit (1) for a printing machine with a printing device (5), in particular, an inkjet printer, for applying liquid (22) on a print material, with monitoring of the quantity of liquid in a liquid supply unit (1) by measuring the liquid level (23) with a sequential controller, wherein the measurement device (11) is suitable for measuring a fill level (23) and for controlling a liquid device (3).
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: September 23, 2014
    Assignee: Phoenix Contact GmbH & Co. KG
    Inventors: Harald Fuetterer, Dieter Stellmach
  • Patent number: 8820893
    Abstract: The present invention related to an inkjet printhead, adaptive for an ink cartridge including one ink-supplying tank, the inkjet printhead includes: a nozzle plate having a plurality of nozzles; and an inkjet chip for controlling ink jetting and having a total area region having a length and a width, the total area region including: a non-wiring region for installing one single ink-supplying flow channels; and a wiring region for installing an internal circuit including a plurality inkjet unit assembly, each inkjet unit of the inkjet unit assembly including a heater installed correspondingly to the nozzle; wherein an area of the wiring region of the inkjet chip is or less than 82% of a total area of the inkjet chip.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: September 2, 2014
    Assignee: Microjet Technology Co., Ltd.
    Inventors: Hao Jan Mou, Ta Wei Hsueh, Ying Lun Chang, Rong Ho Yu, Hsien Chung Tai, Cheng Ming Chang, Wen Hsiung Liao, Yung Lung Han
  • Patent number: 8814296
    Abstract: A printing apparatus comprising, a printhead including an element array in which a plurality of printing elements are arrayed, scanning unit configured to reciprocally scan the printhead, driving unit configured to time-divisionally drive the printing elements, conveyance unit configured to convey a printing medium, and setting unit configured to set a driving order, wherein the conveyance unit performs a first conveyance operation of conveying the printing medium by a conveyance amount which is an integer multiple of a width of the group of the time-divisional driving, and a second conveyance operation of conveying the printing medium by a conveyance amount which is not an integer multiple of the width of the group, and the setting unit sets the driving order in the time-divisional driving for each scan based on the conveyance amount by the conveyance unit.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: August 26, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Yazawa, Yuji Konno, Hinako Ojiro, Masashi Hayashi, Toshiyuki Chikuma, Hirokazu Tanaka
  • Publication number: 20140210912
    Abstract: According to an example, a method for TIJ printing may include applying, by a processor, F electrical firing pulses to a resistor of a TIJ printhead for a duration of about 0.50 to 1.00 ?s to jet a latex ink or a dispersed polymer particle ink from a nozzle. According to another example, a TIJ printing apparatus may include a TIJ printhead including a firing chamber to jet a latex ink or a dispersed polymer particle ink from a nozzle, and a resistor to heat the latex ink or the dispersed polymer particle ink to jet from the nozzle. The TIJ printing apparatus may further include a memory storing machine readable instructions to apply F electrical firing pulses to the resistor for a duration of about 0.50 to 1.00 ?s to jet the latex ink or the dispersed polymer particle ink, and a processor to implement the machine readable instructions.
    Type: Application
    Filed: January 30, 2013
    Publication date: July 31, 2014
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Phillip C. CAGLE, Paul Joseph BRUINSMA, Satya PRAKASH
  • Patent number: 8789926
    Abstract: A driving circuit which includes a plurality of MOS transistors electrically connected in parallel between a first node and a second node, and drives a load electrically connected between the first node and a third node by the plurality of MOS transistors, wherein the plurality of MOS transistors include at least two MOS transistors having channel lengths different from each other and thus having threshold voltages different from each other.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: July 29, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Wataru Endo, Masanobu Oomura
  • Patent number: 8764166
    Abstract: A liquid ejecting head includes a main liquid ejecting head body, in which is formed a liquid flow channel through which a liquid flows, that ejects the liquid from a nozzle opening using a pressurizing unit; a driving board configured so as to supply power to the pressurizing unit; a connector provided at an end portion of the driving board; and a holding member configured so as to hold the driving board in a bent state and erected relative to one end surface of the main liquid ejecting head body. The holding member has a stopping portion that holds an end of the driving board in which the connector is provided, and the configuration is such that the stopping portion prevents the driving board from opening in the direction of the bend.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: July 1, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Hiroki Miyajima, Kimiyasu Otsuki
  • Patent number: 8708441
    Abstract: In general, in one aspect, the invention features a method of driving an inkjet module having a plurality of ink jets. The method includes applying a voltage waveform to the inkjet module, the voltage waveform including a first pulse and a second pulse, activating one or more of the ink jets contemporaneously to applying the first pulse, wherein each activated ink jet ejects a fluid droplet in response to the first pulse, and activating all of the ink jets contemporaneously to applying the second pulse without ejecting a droplet.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: April 29, 2014
    Assignee: FUJIFILM Dimatix, Inc.
    Inventors: Paul A. Hoisington, Deane A. Gardner
  • Patent number: 8668297
    Abstract: There is provided a driver for an inkjet head, capable of smoothly driving the inkjet head. The driver for an inkjet head includes: an amplifying unit having a plurality of amplifiers individually outputting signals having voltage levels amplified in accordance with a predetermined gain in a predetermined cycle; a coupling unit coupling the signals outputted from the plurality of amplifiers as a single driving signal in accordance with a control signal; a controlling unit controlling the coupling of signals performed by the coupling unit; and a switching unit switching a signal transmission path through which the single driving signal is transmitted to an inkjet head.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: March 11, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Byung Hun Kim
  • Patent number: 8651615
    Abstract: Test pattern template data are stored in a memory of a printer to identify locations spatially within image data of a test pattern printed by printheads in an inkjet printer. The test pattern template data identifies an origin of a test pattern in the image data and the distances between structures in the test pattern to enable test pattern structure in the image data to be detected and identified more easily.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: February 18, 2014
    Assignee: Xerox Corporation
    Inventors: Michael W. Elliot, Charles A. Barbe, Thomas F. Shane, Vivek Jaganathan
  • Patent number: 8567886
    Abstract: The present invention forms a high-quality image by using a print head, in which a plurality of arrayed small heads, each having a plurality of print elements arranged in columns, are arranged so that at least two sets of print elements in adjoining small heads are aligned in a scan direction. The print head and a print medium are moved relative to each other in the scan direction crossing a direction of the print element columns. The print elements are divided into a plurality of drive blocks and activated the drive blocks on a time-division basis. The small heads each have the plurality of print elements arranged in columns, the number of print elements being equal to an integer times the number of time-division drive blocks. Drive timings with which to activate the paired print elements aligned in the scan direction are the same time-division drive timing.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: October 29, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiromitsu Yamaguchi, Makoto Akahira, Satoshi Wada
  • Patent number: 8526721
    Abstract: A method of processing image data, to obtain image data for printing a junction area connecting a circular pad having a radius R with a linear line pattern by forming ink blots having a radius r in an overlapping manner, includes: setting a base pitch P as a base distance between adjacent ink blots; arranging image data of the pad, line pattern, and junction area, which is defined by an extension of the line pattern, in an x-y coordinate system; selecting a first determination point, which corresponds to one side of the junction area; comparing a distance from a center of the pad to the first determination point with a value of (R?r+P); and storing coordinates of the first determination point as print data if the distance from the center of the pad to the first determination point is greater than or equal to the value of (R?r+P).
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: September 3, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Kwansoo Yun, Joshi Akshay, Sangdo Cho, Yongsik Kim, Jaewoo Joung
  • Patent number: 8511796
    Abstract: A system is provided that includes first means for pre-charging a node to a first potential where the node coupled to a switch configured to control current through a firing resistor and second means for selectively discharging the node to a second potential across a path that has only one transistor between the node and the second potential.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: August 20, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Adam L. Ghozeil, Andrew Phillips, David Maxfield, Eugene J. Mar, Matthew P. Heineck, Mark H. MacKenzie
  • Patent number: 8500250
    Abstract: A liquid discharge head includes: a recording element substrate and a plurality of electric connection units; and an electric wiring member that includes a plurality of input terminals, a plurality wirings held between films and electrically connected to the plurality of input terminals, and a plurality of lead lines conducted to the plurality of wirings. In this case, the plurality of wirings include a power line for supplying power to the energy generation elements and a signal line for supplying a signal to the energy generation elements. Relationships of A>B and B<D are satisfied, in which A is a largest width of the signal line, B is a largest width of the lead line connected to the signal line, and D is a largest width of the lead line connected to the power line.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: August 6, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keisuke Iinuma, Hiromasa Amma, Kyosuke Toda
  • Patent number: 8485623
    Abstract: A stationary pagewidth inkjet printhead has one or more nozzle rows extending along a longitudinal axis of the printhead. Each nozzle is configured to fire a droplet of ink at a plurality of predetermined different dot positions along the longitudinal axis, such that a printed dot density exceeds a nozzle density of the printhead.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: July 16, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Publication number: 20130135397
    Abstract: When a non-aqueous ink having a high density is used, a physical quantity defined as “density/viscosity” is equal to or more than a reference value, and therefore printing on a recording sheet is performed using a drive signal with a waveform for suppressing a residual vibration of the ink. Likewise, as to an ink having a low density, when the viscosity of the ink is low, the physical quantity is equal to or more than the reference value, and therefore printing on a recording sheet is performed using the drive signal with a waveform for suppressing a residual vibration of the ink. On the contrary, when the physical quantity is less than the reference value, printing on a recording sheet is performed using the drive signal with a normal waveform.
    Type: Application
    Filed: November 20, 2012
    Publication date: May 30, 2013
    Applicant: Riso Kagaku Corporation
    Inventor: Riso Kagaku Corporation
  • Patent number: 8451492
    Abstract: This invention is directed to a printing apparatus capable of reliably performing a driving switching operation using movement of a carriage. In the printing apparatus, it sometimes cannot be determined to which of a clutch lever or the cap of a printhead the carriage abuts against. In this case, even if the carriage abuts against the cap, a position where the abutment was detected is regarded as the temporary home position of the carriage. When a conveyance motor is driven to transfer its driving force to a desired engaging destination, the cap is retracted from the moving path of the carriage. The driving force of the conveyance motor can thereby be transferred to the desired engaging destination.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: May 28, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ken Hoshino
  • Patent number: 8444254
    Abstract: An apparatus and method to protect an inkjet printer head including a head controller of a printer body and a head chip to drive a heater by using a serial interface, the apparatus including: a clock monitoring unit to monitor a serial clock signal that is used as a reference clock signal supplied to the head chip to control the head chip, and if the serial clock signal is abnormal, to output a signal indicating that the serial clock signal is abnormal; and a heater driving limiting unit to limit energy applied to the heater by using the signal, which is output by the clock monitoring unit, to indicate that the serial clock signal is abnormal.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: May 21, 2013
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventor: Chun-ku Han
  • Patent number: 8446601
    Abstract: A disclosed control device includes a first unit configured to generate image data of multiple images to be superposed one on the other to form a single image and transmit the image data. The second control unit transmits to the first control unit a horizontal sync reference signal for achieving synchronization of the images in a horizontal direction. Based on the horizontal sync reference signal, the first control unit transmits to the second control unit a transfer clock signal that indicates transmission timing of the image data and an effective area signal that indicates an effective area of the image data. The first control unit asserts the effective area signal for an effective-area-signal assertion period that occurs between two consecutive reference-signal assertion periods during which the horizontal sync reference signal is asserted.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: May 21, 2013
    Assignee: Ricoh Company, Ltd.
    Inventor: Eiji Tsuchida
  • Patent number: 8439477
    Abstract: A method of characterizing an array of resistive heaters, a first resistive heater of the array having a nominal sheet resistance, a first nominal length and a first nominal width, the method includes (a) providing a first configuration test resistor disposed proximate the first resistive heater, the first configuration test resistor including a second nominal length and a second nominal width, wherein the second nominal length is different from the first nominal length; (b) measuring a resistance of the first resistive heater; (c) measuring a resistance of the first configuration test resistor; and (d) determining the actual sheet resistance and the actual length of the first resistive heater based on the measured resistances of the first resistive heater and the first configuration test resistor.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: May 14, 2013
    Assignee: Eastman Kodak Company
    Inventors: Roger G. Markham, David P. Trauernicht, John A. Lebens, Christopher R. Morton
  • Patent number: 8430468
    Abstract: A head drive of an inkjet printer includes nozzles and corresponding actuators that eject liquid ink drops. A drive unit applies a drive signal to the actuators. The drive unit includes a drive waveform generator that generates a drive waveform signal to control the drive of the actuators. A modulator pulse modulates the drive waveform. A digital power amplifier amplifies power of the modulated signal. A low pass filter smoothes the amplified digital signal and supplies the signal as a drive signal to the actuators. An inverse filter provided in a subsequent stage of the drive waveform generator corrects at least the frequency characteristics of the filter to predetermined frequency characteristics, independent of the number of the actuators to drive.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: April 30, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Kunio Tabata, Toshiyuki Suzuki, Osamu Shinkawa, Tomoki Hatano, Atsushi Oshima
  • Patent number: 8430466
    Abstract: A head drive apparatus of an inkjet printer includes nozzles and corresponding actuators that eject liquid drops. A drive unit applies a drive signal to the actuators. The drive unit includes a drive waveform generator that generates a drive waveform signal as a reference of a signal to control drive of the actuators. A modulator pulse modulates a drive waveform signal generated by the drive waveform generator. A digital power amplifier amplifies power of a modulated signal subjected to the pulse modulation. A low pass filter smoothes an amplified digital signal subjected to the power amplification by the digital power amplifier and supplying the signal as a drive signal to the actuators. An inverse filter provided in a subsequent stage of the drive waveform generator corrects at least the frequency characteristics of the filter to predetermined frequency characteristics, independently of the number of the actuators to drive.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: April 30, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Kunio Tabata, Atsushi Oshima, Osamu Shinkawa, Toshiyuki Suzuki, Tomoki Hatano
  • Patent number: 8408680
    Abstract: The present invention relates to an ink-jet chip, adaptive for a printing device, at least comprising: a plurality of ink-jet heating elements and an ink-jet signal generating circuit. The ink-jet signal generating circuit at least includes: a counter electrically connected with the printing device, for receiving a counter control signal and a pulse signal, and generating a plurality of counter signals corresponding to the counter control signal and the pulse signal; and a decoder electrically connected with the counter, for receiving and decoding the plurality of counter signals, for generating a plurality of address signals, and selecting a corresponding ink-jet heating element basing on the plurality of address signals.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: April 2, 2013
    Assignee: Microjet Technology Co., Ltd.
    Inventors: Wen Hsiung Liao, Rong Ho Yu, Cheng Ming Chang, Hsien Chung Tai
  • Patent number: 8398208
    Abstract: A ceramic printed circuit board (PCB) and an inkjet printhead assembly using the ceramic PCB. A ceramic PCB in which a plurality of layers are stacked includes a plurality of terminals to receive an electric signal from an external source, a plurality of circuit patterns connected to the plurality of terminals to transmit the electric signal, and a termination resistor having a predetermined thickness disposed between the plurality of circuit patterns, wherein the termination resistor is mounted between the plurality of stacked layers.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: March 19, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jun-ho Lee, Seong-nam Jeon
  • Patent number: 8398196
    Abstract: A printer control unit (3) is described for controlling the size of droplets emitted by a nozzle of a printhead (8) in an inkjet printer. The control unit (3) receives information about an image to be printed by the printer, for example from a raster image processor (5), the information including droplet size information regarding the size of droplet required to be emitted by the nozzle to print the image. Print parameter information for printing the image is determined on the basis of the received droplet size information, the print parameter information including information for use in setting the printer such that droplets emitted by the nozzle during the printing of the image have the required droplet size.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: March 19, 2013
    Assignee: Inca Digital Printers Limited
    Inventor: Philip Russell James Smith
  • Patent number: 8371668
    Abstract: A recording element substrate which is provided with a first recording element group and a second recording element group, each group including a plurality of recording elements.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: February 12, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryo Kasai, Tatsuo Furukawa, Nobuyuki Hirayama, Tomoko Kudo
  • Patent number: 8360556
    Abstract: A wiring board to be connected to an object includes: contact points to be connected to the object; wires connected to the contact points; and a substrate on which the contact points and the wires are formed. The substrate has a first portion which has openings and overlaps with the object when the wiring board is connected to the object, and a second portion which is continuous to the first portion. The contact points include first contact points formed in the first portion on one surface of the substrate facing the object, and second contact points formed in the second portion, on the other surface of the substrate, at areas which do not overlap with the first contact points when the substrate is bent so that the first portion is overlapped with the second portion.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: January 29, 2013
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yusuke Suzuki, Atsushi Ito
  • Patent number: 8353577
    Abstract: A method of controlling a direction of droplet ejection from an inkjet nozzle having a plurality of moveable paddles, the method includes the steps of: (i) actuating a first thermal bend actuator via respective first drive circuitry such that a respective first paddle bends towards a floor of the nozzle chamber; (ii) actuating a second thermal bend actuator via respective second drive circuitry such that a respective second paddle bends towards a floor of the nozzle chamber; and (iii) thereby ejecting a droplet of ink. Actuation of the first and second thermal bend actuators is independently controlled via the first and second drive circuitry so as to control the direction of droplet ejection.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: January 15, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Publication number: 20130010033
    Abstract: A driving circuit which includes a plurality of MOS transistors electrically connected in parallel between a first node and a second node, and drives a load electrically connected between the first node and a third node by the plurality of MOS transistors, wherein the plurality of MOS transistors include at least two MOS transistors having channel lengths different from each other and thus having threshold voltages different from each other.
    Type: Application
    Filed: June 11, 2012
    Publication date: January 10, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Wataru Endo, Masanobu Oomura
  • Patent number: 8342655
    Abstract: A liquid discharge head includes a recording element substrate including an energy generating element, a wiring substrate including wiring, a support substrate for supporting the recording element substrate and the wiring substrate so that a side end portion of the recording element substrate and a side end portion of the wiring substrate are adjacent to each other, and a sealing member, wherein the side end portion of the wiring substrate has a step portion, a distance between a second portion of the step portion on the side opposite to the support substrate and the side end portion of the recording element substrate is larger than a distance between a first portion of the step portion on the side of the support substrate and the side end portion of the recording element substrate, and a part of the wiring is formed in the first portion.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shimpei Otaka, Takayuki Ono
  • Patent number: 8294946
    Abstract: Various embodiments and methods related to a printer are disclosed.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: October 23, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Gary G. Lutnesky, Sang O. Bradley, Raymon D. Burrows, Andreas H. Queisser, Dennis T. So, Kevin E. Swier
  • Patent number: 8287072
    Abstract: A method for using a processor to process image data received from an image data source in preparation for multipass printing, comprising multitoning the image data to produce a multitoned image, using the multitone level of a pixel in the multitoned image to select a plane of a print mask, using the location of the pixel in the multitoned image to select a cell of output pixels in the selected plane of the print mask, and copying the selected cell of output pixels to corresponding locations within a print buffer.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: October 16, 2012
    Assignee: Eastman Kodak Company
    Inventors: Christopher Rueby, Douglas W. Couwenhoven
  • Patent number: 8251473
    Abstract: To achieve high-quality printing by controlling an ink-travelling direction by an electrostatic force so that the ink can be accurately applied on a printing medium, the ink is landed on a desired position of the printing medium effectively without disturbing the ink ejection, independent of a difference in the thickness of the printing medium. An electric field between a printing head and the printing medium is generated by applying a voltage to a platen of conductive material positioned immediately below the printing medium. At this point, the voltage applied to the platen is adjusted so that the electric field of a preferable intensity can be generated on a face of the printing head where ejection openings are formed irrespective of the thickness of the printing medium.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: August 28, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jiro Moriyama, Hidehiko Kanda, Atsuhiko Masuyama, Masahiko Umezawa, Hideaki Takamiya
  • Patent number: 8226190
    Abstract: A recording element substrate includes a recording element, a first voltage conversion circuit configured to receive a first control signal and to output the first control signal with an increased amplitude, a second voltage conversion circuit configured to receive a second control signal and to output the second control signal with an increased amplitude, a PMOS transistor connected to one end of the recording element, and an NMOS transistor connected to the other end of the recording element, wherein the PMOS transistor has a gate connected to an output of the first voltage conversion circuit, and the NMOS transistor has a gate connected to an output of the second voltage conversion circuit.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: July 24, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuyuki Hirayama, Tatsuo Furukawa, Masataka Sakurai, Ryo Kasai, Tomoko Kudo
  • Patent number: RE44825
    Abstract: The present invention is directed to resolve the noise problem with the ink in an ink jet head without changing the substrate manufacturing process for the ink jet head, that is, increasing the cost on the manufacture, and without needs of disposing a noise countermeasure component on the side of the printer main device, or making the design change for the countermeasure. The present invention is characterized in that to prevent malfunction from arising by the noise, a hysteresis circuit to provide different input data threshold values upon rising and falling is provided on an input portion of the signal for a drive control logic system such as a drive input signal for a shift register and a latch circuit on the same substrate as that of the heating elements, the driver and the drive control logic circuit, utilizing a diffusion layer constituting a driver.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: April 8, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Imanaka, Tatsuo Furukawa, Kimiyuki Hayasaki, Hiroyuki Maru, Masaaki Izumida