Patents by Inventor Ulrich Stöckle

Ulrich Stöckle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11364718
    Abstract: In a device for regenerating a print head of an inkjet printing device, a fluid is applied onto the nozzle plate of the print head. The one or more nozzles of the print head can be subsequently operated with one or more no-ejection pulses to produce the effect that fluid is drawn from the nozzle plate into the one or more nozzles and mixes with the ink in the one or more nozzles that the viscosity of the ink in the one or more nozzles is reduced.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: June 21, 2022
    Assignee: Canon Production Printing Holding B.V.
    Inventors: Christoph Rummelsberger, Ulrich Stoeckle
  • Patent number: 11338575
    Abstract: A controller for an inkjet printing device is configured to predict a remaining time period until a failure of the nozzle on the basis of a time curve of offset measurement values with regard to the offset of the ink droplets ejected by said nozzle. A compensation measure may be introduced promptly, before the actual failure of the nozzle on the basis of the prediction in order to have the effect that the compensation measure takes effect at latest at the point in time of the failure of the nozzle, and thus an interruption of the print quality may be prevented.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: May 24, 2022
    Assignee: Canon Production Printing Holding B.V.
    Inventors: Claus Schneider, Ulrich Stoeckle
  • 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
  • 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
  • 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
  • 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
  • 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
  • Patent number: 11161339
    Abstract: In order to determine the nip between a print head and a printing substrate in an ink printing apparatus, ink droplets of a first and second size are simultaneously fired toward the printing substrate by different nozzles of a nozzle row of the print head given a predetermined feed velocity of the printing substrate, whereby print dots of a first size are generated on the printing substrate in a first two print dot row and print dots of a second size are generated on the printing substrate in a second two print dot row. The clearance of the first two print dot row from the second two print dot row is subsequently measured, and the size of the nip is determined from the measured clearance.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: November 2, 2021
    Assignee: Canon Production Printing Holding B.V.
    Inventors: Ulrich Stoeckle, Christoph Rummelsberger, Florian Hitzlsperger
  • Publication number: 20210283901
    Abstract: A controller for operating a print head is described, which controller is designed to shift the activation points in time of the print head for printing of different lines of a print image on a recording medium relative to the line signal points in time, said line signal points in time being dependent on the transport velocity of the recording medium, such that the print head is operated with quantized operating frequencies from a set of predefined quantized operating frequencies. The print quality of the print head may thus be increased.
    Type: Application
    Filed: March 10, 2021
    Publication date: September 16, 2021
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Ulrich Stöckle, Florian Hitzlsperger
  • Patent number: 11014351
    Abstract: The droplet velocities of the nozzles of different groups of nozzles of a print head of an inkjet printing device are determined for different line clock rates. An optimized operating line clock rate is then determined for the operation of the printing device, where the deviation between the droplet velocities of the nozzles of the different groups is reduced (e.g. minimized). The droplet positioning along the transport direction of a recording medium may be advantageously homogenized via the convergence of the droplet velocities.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: May 25, 2021
    Assignee: Canon Production Printing Holding B.V.
    Inventor: Ulrich Stoeckle
  • Publication number: 20210107278
    Abstract: A controller for an inkjet printing device is configured to predict a remaining time period until a failure of the nozzle on the basis of a time curve of offset measurement values with regard to the offset of the ink droplets ejected by said nozzle. A compensation measure may be introduced promptly, before the actual failure of the nozzle on the basis of the prediction in order to have the effect that the compensation measure takes effect at latest at the point in time of the failure of the nozzle, and thus an interruption of the print quality may be prevented.
    Type: Application
    Filed: October 8, 2020
    Publication date: April 15, 2021
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Claus Schneider, Ulrich Stoeckle
  • Publication number: 20210107280
    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: Application
    Filed: October 8, 2020
    Publication date: April 15, 2021
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Claus Schneider, Ulrich Stoeckle
  • Publication number: 20210053363
    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: Application
    Filed: August 21, 2020
    Publication date: February 25, 2021
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Ulrich Stoeckle, Christoph Rummelsberger, Florian Hitzlsperger
  • Patent number: 10889111
    Abstract: An inkjet printer having at least one print head in which at least one edge region nozzle at the edge of the print head is not activated for the printing of a print image, but nevertheless is activated at least temporarily with non-ejection pulses without ink ejection. Intensity fluctuations of the dots of a print image that are printed by the remaining nozzles of the print head may be reduced via the activation of an edge region nozzle with non-ejection pulses.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: January 12, 2021
    Assignee: Canon Production Printing Holding B.V.
    Inventors: Ulrich Stoeckle, Uwe Hofmann, Hans Gollatz, Lars Joergens
  • Publication number: 20200406614
    Abstract: In a device for regenerating a print head of an inkjet printing device, a fluid is applied onto the nozzle plate of the print head. The one or more nozzles of the print head can be subsequently operated with one or more no-ejection pulses to produce the effect that fluid is drawn from the nozzle plate into the one or more nozzles and mixes with the ink in the one or more nozzles that the viscosity of the ink in the one or more nozzles is reduced.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Applicant: Canon Production Printing Holding B.V.
    Inventors: Christoph Rummelsberger, Ulrich Stoeckle
  • Publication number: 20200189269
    Abstract: In order to determine the nip between a print head and a printing substrate in an ink printing apparatus, ink droplets of a first and second size are simultaneously fired toward the printing substrate by different nozzles of a nozzle row of the print head given a predetermined feed velocity of the printing substrate, whereby print dots of a first size are generated on the printing substrate in a first two print dot row and print dots of a second size are generated on the printing substrate in a second two print dot row. The clearance of the first two print dot row from the second two print dot row is subsequently measured, and the size of the nip is determined from the measured clearance.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 18, 2020
    Applicant: Oce Holding B.V.
    Inventors: Ulrich Stoeckle, Christoph Rummelsberger, Florian Hitzlsperger
  • Publication number: 20200079080
    Abstract: In preparation for an ejection pulse for printing a dot in a subsequent line, the actuator of a nozzle of an inkjet printer is activated in a current line with an excitation pulse via which no ink ejection is produced although an oscillation of ink in the nozzle is produced. The oscillation that is produced by the excitation pulse is thereby matched to the ejection pulse such that the ink droplets that are ejected by the ejection pulse in the subsequent line at least approximately has a defined target droplet velocity. The droplet velocity of the ejected ink droplets, and thus the droplet positioning, may thus be made uniform via the use of excitation pulses.
    Type: Application
    Filed: September 6, 2019
    Publication date: March 12, 2020
    Applicant: Océ Holding B.V.
    Inventors: Ulrich Stoeckle, Florian Hitzlsperger
  • Patent number: 10538102
    Abstract: A degassing device can include one or more passive components, such as a gas-permeable membrane. The passive components may not directly be monitored. The state (e.g. the permeability) of the passive components may be reliably determined via evaluation of pressure information with regard to the pressure (e.g. negative pressure) in the degassing device.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: January 21, 2020
    Assignee: Océ Holding B.V.
    Inventors: Ulrich Stöckle, Stefan Adelsperger
  • Publication number: 20190389205
    Abstract: The droplet velocities of the nozzles of different groups of nozzles of a print head of an inkjet printing device are determined for different line clock rates. An optimized operating line clock rate is then determined for the operation of the printing device, where the deviation between the droplet velocities of the nozzles of the different groups is reduced (e.g. minimized). The droplet positioning along the transport direction of a recording medium may be advantageously homogenized via the convergence of the droplet velocities.
    Type: Application
    Filed: June 26, 2019
    Publication date: December 26, 2019
    Applicant: Océ Holding B.V.
    Inventor: Ulrich Stoeckle
  • Patent number: 10406832
    Abstract: A method to increase the print quality of a printer can include determining sensor data corresponding to a print image printed by a print head of the at least one print head of the printer onto the recording medium; determining, based on the sensor data, undulation information corresponding to unevenness of the recording medium, a distance between the one or more nozzles of the print head of the printer and the recording medium varying due to the unevenness; and printing, based on the undulation information, a subsequent print image with the print head of the printer. The printer can include at least one print head including one or more nozzles that are configured to fire ink droplets onto a recording medium to generate a print image on the recording medium.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: September 10, 2019
    Assignee: Océ Holding B.V.
    Inventor: Ulrich Stoeckle