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    1.
    发明专利
    未知

    公开(公告)号：BRPI0603541A

    公开(公告)日：2007-04-27

    申请号：BRPI0603541

    申请日：2006-08-30

    Applicant: XEROX CORP

    Inventor： DEJONG JOANNES N M ,  CASTELLI VITTORIO ,  PARK DANIEL C ,  WILLIAMS LLOYD A

    IPC: B65H9/10 ,  G03G15/00

    Abstract: Embodiments according to the present disclosure provide methods and systems of determining nip velocity profiles in a medium registration system, including parameterizing a set of equations into a set of standard parameters, the set of equations representing an analytic form of the nip velocity profiles; determining values of the parameters through an iteration process; and determining the nip velocity profiles based on the determined values of the parameters. The embodiments separately provide systems and methods of simulating a medium registration process, including inputting an error parameter to a velocity nominal profile of a nip in a medium registration system; determining an output value of the velocity nominal profile; and using the output value in a regression algorithm to obtain a simulated relationship, the simulated relationship indicative of a manner in which the error parameter influences the output value. The embodiments separately provide systems and methods of determining an angular velocity of a medium relative to a nip in a medium registration system, including determining a path of the nip on the medium; and determining the angular velocity as a function of a position of the nip in the path. The embodiments separately provide systems and methods of controlling nips of a medium registration system, including wagging a medium relative to a center line of two nips of the medium registration system; and then unwagging the medium relative to the center line of the two nips.

    2.
    发明专利
    未知

    公开(公告)号：BRPI0503194A

    公开(公告)日：2006-03-21

    申请号：BRPI0503194

    申请日：2005-07-29

    Applicant: XEROX CORP

    Inventor： CASTELLI VITTORIO ,  DEJONG JOANNES N M ,  WILLIAMS LLOYD A ,  DONDIEGO MATTHEW ,  NOWAK WILLIAM J

    IPC: G03G15/00

    Abstract: An imaging device for producing multicolor images from image data containing data representing an image of a first color and an image of a second color to be registered relative to the image of the first color onto a substrate by transferring toner of the first and second colors to the substrate is provided. The imaging device includes a first imager, a second imager, a photoreceptor belt, a plurality of rollers mounted to a frame of the imaging device, an angular position sensor, an image data source and a controller. The plurality of rollers define a process path along which the photoreceptor belt is driven past the first and second imagers in a process direction. The plurality of rollers includes a drive roller that exhibits an eccentricity for which a formula relating angular position as a function of the phase angle of the drive roller to eccentricity is known. The angular position sensor detects the phase angle of the drive roller. The image data source generates image data that includes a line to be printed in the first color and in the second color. The controller is coupled to receive signals from the angular position sensor, ROS imager and image data source and is configured to drive the second imager to generate an optical output. The controller includes memory and a processor. The memory stores the formula relating angular position as a function of the phase angle of the drive roller to eccentricity. The processor calculates an appropriate time delay for starting the generation of the optical output of the second imager for printing the line to be printed in the first color and in the second color based on the time of the starting of the optical output by the ROS imager to print to print that line, the signal received from the angular position sensor, and the formula relating angular position as a function of the phase angle of the drive roller to eccentricity.

    CALIBRATION METHOD AND SYSTEM FOR SHEET REGISTRATION AND DESKEWING
    3.
    发明专利
    CALIBRATION METHOD AND SYSTEM FOR SHEET REGISTRATION AND DESKEWING 未知

    公开(公告)号：CA2215431C

    公开(公告)日：2000-12-26

    申请号：CA2215431

    申请日：1997-09-12

    Applicant: XEROX CORP

    Inventor： WILLIAMS LLOYD A ,  WOLF BARRY M ,  DEJONG JOANNES N M

    IPC: B41J13/00 ,  B65H9/10 ,  G03G15/00 ,  G03G21/00

    Abstract: There is provided a calibration system for a deskewing and registering device for an electrophotographic printing machine. The method includes a.)moving a sheet from a first position to a second position along a paper path; b.)sensing the position of the sheet at the first position and the second position; c.)choosing a correction value to cause the sheet to change a lateral position from the first position to the second position; d.)repeating the moving, sensing, and choosing steps until a predetermined adjustment is made when moving the sheet from the first position to the second position to determine a proper calibration value. A calibration system for a deskewing and registering device for an electrophotographic printing machine.

    4.
    发明专利
    未知

    公开(公告)号：BR9703721A

    公开(公告)日：1998-07-07

    申请号：BR9703721

    申请日：1997-06-25

    Applicant: XEROX CORP

    Inventor： WOLF BARRY M ,  WILLIAMS LIOYD A ,  DEJONG JOANNES N M

    IPC: B65H9/10 ,  G03G15/00 ,  G03G21/00

    Abstract: A deskewing and registering device for an electrophotographic printing machine. A single set of sensors determine the position and skew of a sheet in a paper path and generate signals indicative thereof. A pair of independently driven nips forward the sheet to a registration position in skew and at the proper time based on signals from a controller which interprets the position signals and generates the motor control signals. An additional set of sensors can be used at the registration position to provide feedback for updating the control signals as rolls wear or different substrates having different coefficients of friction are used.

    CALIBRATION METHOD AND SYSTEM FOR SHEET REGISTRATION AND DESKEWING
    5.
    发明专利
    CALIBRATION METHOD AND SYSTEM FOR SHEET REGISTRATION AND DESKEWING 未知

    公开(公告)号：CA2215431A1

    公开(公告)日：1998-04-02

    申请号：CA2215431

    申请日：1997-09-12

    Applicant: XEROX CORP

    Inventor： WOLF BARRY M ,  DEJONG JOANNES N M ,  WILLIAMS LLOYD A

    IPC: B41J13/00 ,  B65H9/10 ,  G03G15/00 ,  G03G21/00

    Abstract: There is provided a calibration system for a deskewing and registering device for an electrophotographic printing machine. The method includes a.) moving a sheet from a first position to a second position along a paper path; b.) sensing the position of the sheet at the first position and the second position; c.) choosing a correction value to cause the sheet to change a lateral position from the first position to the second position; d.) repeating the moving, sensing, and choosing steps until a predetermined adjustment is made when moving the sheet from the first position to the second position to determine a proper calibration value.

    Reflexdrucken
    6.
    发明专利
    Reflexdrucken 未知

    公开(公告)号：DE102011082395A1

    公开(公告)日：2012-03-15

    申请号：DE102011082395

    申请日：2011-09-09

    Applicant: XEROX CORP

    Inventor： DEJONG JOANNES N M ,  WILLIAMS LLOYD A

    IPC: G03G15/01 ,  B41J15/00 ,  G03G15/00

    Abstract: Es werden ein Verfahren und ein System bereitgestellt, in denen bei einem Druckvorgang die Geschwindigkeit an einer ersten Position und die Spannung eines Trägermaterials an einer zweiten Position für eine Bildaufnahmeoberfläche ermittelt werden. Diese an den beiden Positionen ermittelten Informationen werden verwendet, um das Aufbringen von Bildern an der ersten und/oder der zweiten Position geeignet zu steuern.

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