Patents by Inventor David Ahl

David Ahl 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).

  • Publication number: 20240071122
    Abstract: The present disclosure generally pertains to an object recognition method for time-of-flight camera data, including: recognizing a real object based on a pretrained algorithm, wherein the pretrained algorithm is trained based on time-of-flight training data, wherein the time-of-flight training data are generated based on a combination of real time-of-flight data being indicative of a background, and simulated time-of-flight data generated by applying a mask on synthetic overlay image data representing a simulated object, thereby generating a masked simulated object, the mask being generated based on the synthetic overlay image data.
    Type: Application
    Filed: January 13, 2022
    Publication date: February 29, 2024
    Applicant: Sony Semiconductor Solutions Corporation
    Inventors: Malte AHL, David DAL ZOT, Varun ARORA
  • Publication number: 20100196070
    Abstract: A method, apparatus and system for media registration setup, includes depositing developed image toner patch on a photoreceptor surface, such that the developed image patch overlaps two image panels on the photoreceptor surface. Performing toner image transfer on a media sheet in contact with the photoreceptor by applying electrostatic field to cause toner particles to migrate from the photoreceptor surface to the media. Following toner image transfer, the level of residual toner on the photoreceptor surfaces measured by sensors to determine alignment of a written lead edge and a target lead edge, the written lead edge corresponding to the lead edge of the media. The measurements are used to adjust the media registration setup such that the written lead edge corresponds to a given target lead edge.
    Type: Application
    Filed: February 2, 2009
    Publication date: August 5, 2010
    Applicant: Xerox Corporation
    Inventors: Robert A. GROSS, David AHL
  • Publication number: 20070217835
    Abstract: An improved detack corotron reduces the likelihood of a paper jam arising from a curled paper edge getting caught in the corotron. The detack corotron includes an electrically conductive coronode having a plurality of field emitters, each field emitter having a terminating end, the terminating ends of the field emitters being spatially separated from one another, and a paper edge guide having a plurality of generally planar members, the generally planar members being perpendicular to the conductive coronode and the generally planar members having a height that extends above the terminating ends of the field emitters.
    Type: Application
    Filed: March 14, 2006
    Publication date: September 20, 2007
    Inventors: Robert Gross, David Sekovski, Douglas McKeown, David Ahl, Michael Soures
  • Publication number: 20070110460
    Abstract: In a printing machine having at least one transfer device driven in response to an electrical signal and operable to transfer a medium onto a sheet, a method of controlling the magnitude of the electrical signal driving the transfer device comprises assigning a magnitude of the electrical signal for driving the transfer device to each of at least two transfer stress conditions, evaluating at least one operating parameter of the printing machine relative to a corresponding pre-determined threshold value, selecting one of the at least two transfer stress conditions based on the evaluation of the at least one operating parameter, and applying the magnitude of the electrical signal corresponding to the selected stress condition to the electrically-driven transfer device. The operating parameters may include environmental parameters, such as altitude and humidity, sheet properties, such as paper weight, and machine parameters, such as transfer device life.
    Type: Application
    Filed: November 16, 2005
    Publication date: May 17, 2007
    Applicant: Xerox Corporation
    Inventors: David Ahl, Michael Soures, Robert Gross
  • Publication number: 20070104519
    Abstract: An apparatus is provided for reducing transfer deletions in an electrostatographic machine. The apparatus comprises a registration mechanism controller for driving a registration mechanism in the process direction. The apparatus also includes a system controller operably associated with the registration mechanism controller. The system controller monitors at least one operating parameter of an image forming apparatus and generates a control signal in response to the monitored operating parameter(s). The registration mechanism controller is responsive to the control signal and drives the registration mechanism at a velocity that corresponds to the control signal. The apparatus further includes a transfer assist mechanism movably mounted adjacent a photoreceptive member so the transfer assist mechanism may be moved from a non-operative position to an operative position to provide substantially uniform contact between a print substrate supplied from said registration mechanism and said photoreceptive member.
    Type: Application
    Filed: November 7, 2005
    Publication date: May 10, 2007
    Inventors: Michael Soures, Robert Gross, David Ahl
  • Publication number: 20070098446
    Abstract: An improved coronode assembly includes pin guards that are positioned closely spaced from and extending above a coronode in order to provide protection for a user reaching past the coronode to remove a sheet jam, and prevent coronode damage when the coronode is handled during servicing by a field service technician. The closeness of the pin guards to the coronode also serves to produce a more uniform field.
    Type: Application
    Filed: November 2, 2005
    Publication date: May 3, 2007
    Inventors: Robert Gross, David Sekovski, Douglas McKeown, David Ahl, Michael Soures
  • Publication number: 20070065173
    Abstract: In a xerographic printing apparatus, a charge device is used to apply a charge to a photoreceptor. The shuttle includes a wiper that cleans a sidewall of the charge device. A tab is disposed adjacent the sidewall to retain toner or dirt accumulated by the scraper. The tab is electrically insulative, and effectively covers the accumulated toner or dirt, to lower the possibility of arcing within the charge device.
    Type: Application
    Filed: September 16, 2005
    Publication date: March 22, 2007
    Inventors: David Sekovski, Robert Gross, John McCaffrey, Michael Soures, David Ahl, Douglas McKeown, Michael Petranto
  • Publication number: 20070065172
    Abstract: In a xerographic printing apparatus, a charge device is used to apply a charge to a photoreceptor. The charge device includes a wire. A shuttle moves along the charge device, and includes a brush wherein the sides of the bristles contact the wire. When the brush moves along the wire, an accumulation of stray particles on the wire is made relatively smooth.
    Type: Application
    Filed: September 16, 2005
    Publication date: March 22, 2007
    Inventors: David Sekovski, Robert Gross, John McCaffrey, Michael Soures, David Ahl, Douglas McKeown, Michael Petranto
  • Publication number: 20070048034
    Abstract: An apparatus for assisting in the transfer of an image from an image bearing member onto a copy substrate, comprises an image bearing member carrying an image to be transferred, a feed mechanism for feeding a copy substrate to the image bearing member, and a transfer assist mechanism movable to an activated position bearing on the substrate to maintain the substrate in contact with the image bearing member to assist in transferring the image thereto, and to a de-activated position. A sensor generates a signal in response to passage of the leading edge and the trailing edge of the substrate to ascertain an actual length of the substrate as it moves to the image bearing member. A controller is operable to direct the transfer assist mechanism to move to the activated position and then to direct the transfer assist mechanism to move to the de-activated position after a de-activation dwell time.
    Type: Application
    Filed: August 23, 2005
    Publication date: March 1, 2007
    Inventors: Michael Soures, David Ahl, Robert Gross, Michael Schab
  • Publication number: 20060285881
    Abstract: A photoreceptor module located within a housing. The photoreceptor module includes a photoreceptor belt, a belt support to maintain the belt in a desired configuration, and a transfer assembly. The transfer assembly is operably positioned in close proximity to the belt, and may be moved away from the belt while both are within the housing to ease clearance of paper jams.
    Type: Application
    Filed: August 25, 2006
    Publication date: December 21, 2006
    Inventors: David Ahl, Douglas McKeown, Robert Gross, Michael Petranto, Youti Kuo, Mark Stevens
  • Publication number: 20060104678
    Abstract: An electrostatographic printing apparatus comprises a charge receptor, and a transfer station for transferring a toner image from the charge receptor to a sheet. The sheet passes through a nip formed between the charge receptor and a moving transfer belt. Upstream of the nip, the belt forms a shallow angle relative to the charge receptor; downstream of the nip, the belt forms a steep angle relative to the charge receptor. This configuration enables self-stripping of the sheet from the transfer belt at the exit of the nip.
    Type: Application
    Filed: November 15, 2004
    Publication date: May 18, 2006
    Inventors: Youti Kuo, Robert Gross, David Ahl, Douglas McKeown, Mark Stevens, Gerald Fletcher, Christopher DiRubio
  • Publication number: 20060024087
    Abstract: A photoreceptor module located within a housing. The photoreceptor module includes a photoreceptor belt, a belt support to maintain the belt in a desired configuration, and a transfer assembly. The transfer assembly is operably positioned in close proximity to the belt, and may be moved away from the belt while both are within the housing to ease clearance of paper jams.
    Type: Application
    Filed: July 28, 2004
    Publication date: February 2, 2006
    Inventors: David Ahl, Douglas McKeown, Robert Gross, Michael Petranto, Youti Kuo, Mark Stevens
  • Publication number: 20050025536
    Abstract: An apparatus and method for automatically adjusting the timing of a transfer assist blade in an electrostatographic imaging system. The apparatus and method operate by partially toning an area of the photoreceptor and then actuating the transfer assist blade such that it smears at least a portion of the partially toned area. Using an electronic toner area cover sensor system, the amount of smearing can be determined, From this, the timing of engagement of the transfer assist blade with the photoreceptor can be determined and, if necessary, adjusted.
    Type: Application
    Filed: July 30, 2003
    Publication date: February 3, 2005
    Inventors: Robert Gross, Youti Kuo, David Ahl