Patents Assigned to CANON PRODUCTION PRINTING HOLDING B.V.
  • Method and device for synchronizing a first printing device with a second printing device
    Patent number: 11292252
    Abstract: In a method and a device for synchronizing a first printing device with a second component (e.g. second printing device), based on a property of a print image printed by the first printing device, which the property is detected by an optical sensor, a first print image is printed and at least one part of the first print image is detected using the optical sensor to generate a corresponding sensor signal. A virtual sensor signal is determined based on first print data and a known position of the optical sensor. The virtual sensor signal is compared with a curve of the sensor signal and a position signal is generated based on the result of the comparison. A second component is started depending on the position signal.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: April 5, 2022
    Assignee: Canon Production Printing Holding B.V.
    Inventors: Claus Schneider, Ulrich Stoeckle
  • SYSTEM AND METHOD FOR CONTROLLING A PRINTING DEVICE
    Publication number: 20220097359
    Abstract: A printing device may include two printers for printing to the front side and the back side of a recording medium. The physical page length of at least one print image applied onto the front side of the recording medium is determined. The required page length of at least one print image to be applied onto the back side of the recording medium is adapted to the determined page length. At least one print line of the print image for the back side is printed repeatedly if the required page length for application of the rear print page onto the back side of the recording medium is smaller than the determined page length.
    Type: Application
    Filed: September 24, 2021
    Publication date: March 31, 2022
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Martin Stockmar, Stefan Brecht, Hubert Drexler
  • METHOD AND PRINTING DEVICE FOR INFLUENCING AN OPTICAL PROPERTY OF A VARNISH LAYER TO BE APPLIED ONTO A PRINTED RECORDING MEDIUM
    Publication number: 20220080748
    Abstract: In a method and a printing device for influencing an optical property of a varnish layer to be applied onto a printed recording medium, a coating substance is applied onto the recording medium by digital printing before the printing of at least one color separation of the print image on said recording medium. The quantity of the coating substance applied per area unit may be adjusted depending on the desired optical property of the varnish layer to be applied later.
    Type: Application
    Filed: September 9, 2021
    Publication date: March 17, 2022
    Applicant: Canon Production Printing Holding B.V.
    Inventor: Albrecht Gerstner
  • FIXATION UNIT FOR USE IN A PRINTING SYSTEM
    Publication number: 20220080746
    Abstract: A fixation unit for use in a printing apparatus includes a substantially closed box for enclosing a heated space, the substantially closed box including an entry opening and an exit opening for enabling transport of a print substrate through the substantially closed box, a heating element arranged for heating the heated space enclosed by the substantially closed box, and a transport mechanism for engaging a sheet of the print substrate from the entry opening to the exit opening of the substantially closed box. The transport mechanism includes a nip of two belts that are pressed together and run concurrently and in the same direction, the belts being impermeable to any ink component. A printer includes such a fixation unit and a printing method uses such a fixation unit.
    Type: Application
    Filed: September 2, 2021
    Publication date: March 17, 2022
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Stan H.P KERSTEN, Hassan NNAFIE
  • Method for operating a print server for digital high-capacity printing systems, and print server
    Patent number: 11275538
    Abstract: In a method for operating the print server, a spooling priority print job is determined which, among the spooling print jobs, has the highest printing priority and has not yet been stored in the print data cache memory. A print job size of the spooling priority print job is determined. A free capacity of the print data cache memory is also determined. One or more print jobs that are not currently being printed from the print data cache memory are deleted until the free capacity of the print data cache memory is equal to or greater than the size of the spooling priority print job, where the printing priority of the print job to be deleted is lower than the printing priority of the spooling priority print job. The spooling priority print job is then loaded into the print data cache memory.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: March 15, 2022
    Assignee: Canon Production Printing Holding B.V.
    Inventors: Herman Lankreijer, Armin Gnaedig
  • SHEET STACKING APPARATUS
    Publication number: 20220063949
    Abstract: A sheet stacking apparatus includes a sheet alignment mechanism configured for aligning a sheet in a predetermined reference position; a gripper arrangement configured to grip the aligned sheet at at least two spaced-apart points of the sheet and to release the sheet on a stack; and a holder configured to hold the sheet in position on the stack while the gripper arrangement releases the sheet. The gripper arrangement is movable along a predetermined trajectory for moving the sheet from the reference position to a stacking position.
    Type: Application
    Filed: August 18, 2021
    Publication date: March 3, 2022
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Lodewijk T. HOLTMAN, Fabian T. ROSENBOOM, Hermanus M. KUYPERS
  • Circuit and method for measuring voltage amplitude waveforms in a printer
    Patent number: 11247456
    Abstract: An electrical circuit for measuring the shape of a voltage waveform in a print head of a printer includes an integrated circuit for generating one or more voltage amplitude waveforms. The electrical circuit includes an inkjet drop forming unit including a plurality of inkjet chambers, wherein each of the plurality of inkjet chambers includes a piezoelectric actuator and an ink nozzle, and a connecting circuit between the integrated circuit and the inkjet drop forming unit suitable for applying one of the one or more voltage amplitude waveforms generated by the integrated circuit to the piezoelectric actuator in one of the plurality of inkjet chambers. In order to measure the shape of the one or more generated voltage amplitude waveforms via capacitive crosstalk, the electrical circuit also includes a conductor in physical proximity to the connecting circuit.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: February 15, 2022
    Assignee: Canon Production Printing Holding B.V.
    Inventors: Aart Nijkamp, Johannes M. M. Simons, Cornelis W. M. Venner
  • Device and method for drying a recording medium with reduced connected load
    Patent number: 11247493
    Abstract: A drying device includes a storage unit in which energy (e.g. thermal energy) may be stored during a charging phase. The stored energy may be used at the beginning of a subsequent printing phase to warm a drying medium (e.g. air) to dry a recording medium that has been printed to. The maximum required connected electrical load of the drying device is advantageously and efficiently reduced.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: February 15, 2022
    Assignee: Canon Production Printing Holding B.V.
    Inventor: Stefan Scherdel
  • PRINTER WITH VACUUM DEVICE
    Publication number: 20220041390
    Abstract: A printer includes a print station; a media transport mechanism arranged for conveying print media on a transport path past the print station, the transport mechanism having a support surface for supporting the media; and a vacuum device arranged for attracting the media against the support surface on a section of the transport path downstream of the print station. The vacuum device is divided, in the direction along the transport path, into at least two segments in which the media are attractable with different non-zero suction pressures.
    Type: Application
    Filed: October 26, 2021
    Publication date: February 10, 2022
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Marcel J.H.M. HAENEN, Ludovicus M. HEIJNDERS
  • METHOD AND DEVICE FOR ASCERTAINING PRINT DATA FOR AN INKJET PRINTING DEVICE
    Publication number: 20220040972
    Abstract: In a method and device for ascertaining print data for a print image to be printed, the print data is adapted and/or determined such that the time curve of the ink flow quantity, exhibits no quantity changes or flow rates due to which ink ejection errors might be produced, in particular nozzle failures.
    Type: Application
    Filed: July 30, 2021
    Publication date: February 10, 2022
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Florian Hitzlsperger, Jochen Reinders, Ulrich Stöckle, Eva Pichlmeier
  • METHOD AND DEVICE FOR CHECKING A CLEANING UNIT
    Publication number: 20220040981
    Abstract: A device may be configured to check, via evaluation of resistance data of a cleaning sensor arranged on a print bar of an inkjet printing device, whether a cleaner for cleaning the one or more print heads of the print bar exhibits a negative effect. The state of a cleaner may be reliably and efficiently monitored via the installation of a cleaning sensor in a print bar.
    Type: Application
    Filed: August 4, 2021
    Publication date: February 10, 2022
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Ulrich Stöckle, Christoph Rummelsberger, Florian Hitzlsperger
  • Printing system and method for protecting a print head upon printing to a recording medium
    Patent number: 11241898
    Abstract: A printing system having: a print head arranged with a predetermined nip for printing to a recording medium; a sensor positioned upstream of the print head, and configured to detect possible joints of the recording medium; a spacer arranged in a region of the print head, the spacer being configured to be displaceable to deflect the recording medium and increasing a distance between the print head and recording medium; an actuator to displace the spacer element; and a controller configured to activate the actuator to displace the spacer upon detection of a joint by the sensor.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: February 8, 2022
    Assignee: Canon Production Printing Holding B.V.
    Inventor: Robert Lang
  • METHOD AND DEVICE FOR INCREASING THE PRINT QUALITY OF AN INKJET PRINTING DEVICE
    Publication number: 20220024221
    Abstract: In a method and system for increasing print quality, activation pulses are activated with which a nozzle of an inkjet printing device to print dots on a recording medium. The activation pulses may be adapted based on sensor data with respect to already printed dots. The method and system can further include an automatic adaptation of the activation pulses to increase print quality even given the presence of soiling at the nozzle.
    Type: Application
    Filed: July 21, 2021
    Publication date: January 27, 2022
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Florian Hitzlsperger, Ulrich Stöckle
  • Method for adjusting a setup for an encoder for printing to a recording medium of unknown thickness with a multi-row inkjet print head in a printing system
    Patent number: 11230117
    Abstract: In a method for adjusting a setup for an encoder for printing to a recording medium of unknown thickness with a multi-row inkjet print head in a printing system, a continuous test line is printed onto the recording medium, transversal to a feed direction of said recording medium, a varied width of the test line is measured, and the adjustment of the setup is modified to minimize the width of the test line.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: January 25, 2022
    Assignee: Canon Production Printing Holding B.V.
    Inventors: Ulrich Stoeckle, Christoph Rummelsberger, Florian Hitzlsperger
  • LIQUID JETTING DEVICE
    Publication number: 20220016884
    Abstract: A liquid jetting device is arranged to eject a droplet of a liquid. The device includes a nozzle, a liquid duct connected to the nozzle, an electro-mechanical transducer arranged to create an acoustic pressure wave in the liquid in the duct, and an electronic control system arranged to apply to the transducer a voltage signal having a waveform configured for ejecting a droplet from the nozzle. The waveform is further configured to quench a residual acoustic pressure wave in the liquid duct and includes a jet pulse, a subsequent first quench pulse having a polarity opposite to that of the jet pulse, and a subsequent second quench pulse having the same polarity as the jet pulse.
    Type: Application
    Filed: July 7, 2021
    Publication date: January 20, 2022
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Hans REINTEN, Youri G.J.P. DE LOORE
  • Support structure defining a flat support surface
    Patent number: 11225093
    Abstract: A support structure defining a flat support surface for supporting a web material includes a number of beams, each having a cross-section elongated in a first direction normal to the support surface. The beams have a ruler edge extending in a second direction in parallel with the support surface, which is defined by the ruler edges. The support structure includes a number of adjustment mechanisms for adjusting the positions of the ruler edges in the first direction. Each beam has a base part and a ruler part, the ruler part defining the ruler edge and being connected to the base part by at least three adjustment mechanisms distributed over the length of the beam. Each adjustment mechanism includes a lever that is pivotable relative to the base part about a fixed fulcrum, is connected to the ruler part, and has an adjustment arm with an adjustable free end.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: January 18, 2022
    Assignee: CANON PRODUCTION PRINTING HOLDING B.V.
    Inventor: Joseph A. Schulkes
  • PAPER INPUT MODULE FOR A PRINTING APPARATUS
    Publication number: 20220002100
    Abstract: A paper input module for use in a printing apparatus includes a substantially closed box for holding a stack of sheets of a print substrate; a duct in fluid connection with the closed box and arranged for transporting a sheet of the print substrate out of the paper input module; and a transport mechanism for engaging a sheet of the print substrate to exit the paper input module via the duct. A method for conditioning a stack of print substrates in such a paper input module is also disclosed.
    Type: Application
    Filed: June 25, 2021
    Publication date: January 6, 2022
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Erik P.J. VERHOEVEN, Henricus J.A. VAN DE SANDE, Luc LINDERS, Pim DU BUF
  • SCANNING INKJET PRINTER
    Publication number: 20210402806
    Abstract: An air knife assembly is provided to jet an air current to control the landing of sheet of print media during transfer between two adjacent conveyors in a printer. The air knife forming unit is configured for jetting an air curtain formed such that said air curtain and air currents resulting from it flow substantially perpendicular to a transport direction of the conveyors. Thereby, lifting and consequently wrinkling of the leading edge during transfer and landing may be avoided.
    Type: Application
    Filed: June 16, 2021
    Publication date: December 30, 2021
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Peter G. LA VOS, Adrianus A. DRAAD, Hendrikus G.M. RAMACKERS
  • Printing device having an adjustable fuser
    Patent number: 11209758
    Abstract: A printing device includes an applicator with which a test fluid is applied onto a recording medium to be printed to, as well as an absorption measurement system with which absorption data are acquired with regard to the absorption rate of the test fluid. The printing device also includes a fuser to fix a print image printed by the printing device. The fuser is adjusted depending on the acquired absorption data so that an optimal and/or desired fixing of print images on the respectively used type of recording medium is produced.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: December 28, 2021
    Assignee: Canon Production Printing Holding B.V.
    Inventors: Christian Kopp, Georg Landmesser, Bernhard Hochwind
  • Method and device for controlling an actuator of an inkjet printing system
    Patent number: 11207882
    Abstract: In an inkjet printing system, an actuator that is associated with a nozzle of a printing element is controlled in a normal operating mode, given a non-defective nozzle, to implement at least one standard refresh measure if the time period in which the actuator is not activated to output an ink droplet exceeds a preset limit value. After detection of a defective nozzle, the actuator is controlled in an error operating mode to implement at least one intensified refresh measure.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: December 28, 2021
    Assignee: Canon Production Printing Holding B.V.
    Inventor: Claus Schneider