Patents by Inventor Wolfgang Luxem

Wolfgang Luxem 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: 20050117929
    Abstract: To regulate the gloss on a print material, and avoid excess release oil, the properties of the fusing medium are measured, and the gloss on the print material is determined on the basis of the measured properties of the fusing medium.
    Type: Application
    Filed: November 20, 2003
    Publication date: June 2, 2005
    Inventors: Eggert Jung, Wolfgang Luxem, Holger Runkowske, Johann Weigert, Thomas Zelenka
  • Publication number: 20050011385
    Abstract: Controlling a sensor mechanism for a printing machine, in which the sensor mechanism in a printing machine detects, in an initial operational mode, at least one mark and the detection of the mark initiates a second operational mode in which the optical density and the color of the mark are detected by the sensor mechanism.
    Type: Application
    Filed: July 9, 2004
    Publication date: January 20, 2005
    Inventors: Wolfgang Luxem, Ralph Petersen
  • Patent number: 6611345
    Abstract: Determining the position of a sheet pile (1, 12) having faces (2) and edges (3) is achieved by at least one defined illumination zone (5, 5′, 5″) produced on the sheet pile (1, 12) by diverging beams (4), and at least two boundaries (6, 6′, 6″, 6′″, 6″″, 6′″″) of at least one illumination zone (5, 5′, 5″) are detected and used to determine the position of the sheet pile (1, 12). A device is correspondingly configured with at least one illumination system (9, 9′) and at least one receiver (7, 7′). A positioning system (10) is additionally fitted with a controller (11) in order to bring the sheet pile (1, 12) from the determined actual position (20) into its desired position (21).
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: August 26, 2003
    Assignee: NexPress Solutions LLC
    Inventor: Wolfgang Luxem
  • Patent number: 6587653
    Abstract: Applying a toner print to a substrate, in particular to a substrate (3). At least one print (7) is applied to the substrate. Then, the amount of toner applied to the substrate is measured by a measuring device (21). Finally, the difference between the actual amount of toner and a desired amount of toner in the print (7) applied to the substrate is determined, the printing process being influenced on the basis of the deviation in such a way that the difference in the amounts of toner is reduced or at least remains the same during subsequent prints.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: July 1, 2003
    Assignee: NexPress Solutions LLC
    Inventor: Wolfgang Luxem
  • Patent number: 6521905
    Abstract: A method and device for detecting the position of a transparent conveyor belt including directing light beams (2) onto the region of an edge (3) of the conveyor belt, detecting a jump in intensity of the light beam (2, 2′) as a consequence of the partial insertion of the conveyor belt into the beam path (2) and evaluating the detected jump in intensity in order to determine the position of the conveyor belt, wherein the light beams (2) are linear polarized light and the beam path (2) is directed at an angle or irradiation (&agr;) between 40° and 80° of the light (2) onto the bounding surface (7) in such a way that a high degree of reflection is achieved and reflected light and non-reflected light is detected.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: February 18, 2003
    Assignee: NexPress Solutions LLC
    Inventors: Wolfgang Luxem, Karlheinz Peter, Rolf Spitz
  • Patent number: 6505826
    Abstract: A device for separating or singling sheets, which have been piled up to form a stack, in a feeder of a sheet-processing machine, having a transport element with a guide edge, includes a device for matching the shape of the guide edge to the contour of the topmost sheet at a front side of the stack, as viewed in a sheet transport direction.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: January 14, 2003
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Markus Gerstenberger, Andreas Henn, Wolfgang Luxem, Tobias Müller, Thomas Wolf
  • Publication number: 20020044785
    Abstract: A method is proposed for applying a toner print to a printable surface, in particular to a substrate (3), preferably paper or board, or to a transport surface for a substrate (3), as are a printing machine (1) and a measuring device (21) for implementing the method. Firstly, at least one print (7) is applied to the printable surface. Then, the amount of toner applied to the printable surface is measured by means of a measuring device (21). Finally, the difference between the actual amount of toner and a desired amount of toner in the print (7) applied to the printable surface is determined, the printing process being influenced on the basis of the deviation in such a way that the difference in the amounts of toner is reduced or at least remains the same during subsequent prints.
    Type: Application
    Filed: August 14, 2001
    Publication date: April 18, 2002
    Applicant: NexPress Solutions LLC
    Inventor: Wolfgang Luxem
  • Publication number: 20010022424
    Abstract: A device for separating or singling sheets, which have been piled up to form a stack, in a feeder of a sheet-processing machine, having a transport element with a guide edge, includes a device for matching the shape of the guide edge to the contour of the topmost sheet at a front side of the stack, as viewed in a sheet transport direction.
    Type: Application
    Filed: February 16, 2001
    Publication date: September 20, 2001
    Inventors: Markus Gerstenberger, Andreas Henn, Wolfgang Luxem, Tobias Muller, Thomas Wolf
  • Patent number: 6019041
    Abstract: A method of controlling a level of printing ink in an ink fountain, including, by the use of an ink metering device, topping off printing ink along an ink fountain roller that dips into the printing ink; by a level sensor, determining signals relating to the actual level along the ink fountain roller, feeding the signals relating to the actual level to a control device; in the control device, comparing the signals fed thereto with signals relating to a desired level; forming actuating signals from the derived comparative signals, for an actuating element in the ink metering device, so that printing ink is topped off along the ink fountain roller in accordance with ink acceptance from the ink fountain; from a container with a limited supply of printing ink, dispensing the printing ink for topping off and, if necessary or desirable, renewing the supply of ink in accordance with ink demand, which further includes, for each measurement location of the level sensor, determining the change in the actual level per u
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: February 1, 2000
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Holger Leonhardt, Wolfgang Luxem