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公开(公告)号：BRPI0603474A
公开(公告)日：2007-04-27
申请号：BRPI0603474
申请日：2006-08-29
Applicant: XEROX CORP
Inventor： DEJONG JOANNES N M , CASTELLI VITTORIO , PARK DANIEL C , WILLIAMS LLOYD A
Abstract: Embodiments according to the present disclosure provide methods and systems of determining nip velocity profiles in a medium registration system (20), 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 (VA,VB); 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 (²) 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 (10) 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 (NA,NB) 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.
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公开(公告)号：DE60202178D1
公开(公告)日：2005-01-13
申请号：DE60202178
申请日：2002-07-26
Applicant: XEROX CORP
Inventor： WILLIAMS LLOYD A , DE JONG JOANNES N M , DONDIEGO MATTHEW , SAVINO MICHAEL J
Abstract: A sheet registration system, especially for printers, with a lower cost and lower mass-movement system for both sheet deskewing and transverse registration repositioning of the sheets (12) in the same integral system, especially for higher speed printing. Only one main drive motor (11A) can drive both of the two spaced apart sheet feeding nips (17A,17B), together with a much lower power, and lower cost, deskewing differential drive system (112,32) for providing the relative differential angular movement of the two spaced sheet feeding nips (17A,17B) to achieve the desired amount of sheet deskewing movement, without interrupting the forward feeding movement of the sheet (12). Also disclosed are extensive further reductions in the component mass of the lateral translation movement for lateral sheet registration.
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公开(公告)号：DE69616142D1
公开(公告)日：2001-11-29
申请号：DE69616142
申请日：1996-05-01
Applicant: XEROX CORP
Inventor： DOMOTO GERALD A , DEJONG JOANNES N , KNAPP JOHN F , WILLIAMS LLOYD A , CASTELLI VITTORIA
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公开(公告)号：DE102011084739A1
公开(公告)日：2012-04-26
申请号：DE102011084739
申请日：2011-10-19
Applicant: XEROX CORP
Inventor： DEJONG JOANNES N M , MANDEL BARRY P , WILLIAMS LLOYD A , CHOI INJAE , THARAYIL MARINA L , LYSY DUSAN G
Abstract: Die hierin beschriebenen Ausführungsformen umfassen ein Substratmedienausrichtsystem in einem Drucksystem. Das Ausrichtsystem umfasst ein Schräglaufkorrektursystem, ein reflektierendes System und eine Steuerung. Das Schräglaufkorrektursystem ist ausgebildet, Substratmedien im Schräglauf zu korrigieren. Das reflektierende System ist ausgebildet, die laterale Position der Substratmedien und einen vorderen Rand und/oder einen hinteren Rand der Substratmedien zu erfassen, wenn diese in der Prozessrichtung transportiert werden. Die Steuerung ist funen und ausgebildet, das Auswerfen von Tinte aus einem Druckkopfsystem in Reaktion auf das Erkennen der lateralen Position des Substratmediums und des vorderen Randes und/oder des hinteren Randes des Substratmediums zu steuern.
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公开(公告)号：CA2553357A1
公开(公告)日：2007-02-01
申请号：CA2553357
申请日：2006-07-25
Applicant: XEROX CORP
Inventor： MANDEL BARRY P , DEJONG JOANNES N M , WILLIAMS LLOYD A , KRUCINSKI MARTIN
Abstract: Embodiments herein measure current/voltage levels of a drive motor when med ia is in contact with a drive roller so as to determine the drive force imparte d by the drive rollers on the media. Then, embodiments herein can reference the predetermin ed relationship between roller drive force and media/drive roller velocity rati os to determine a difference between the velocity of the drive roller and the velocity the media based on the drive force. Once this velocity difference is determined, embodiments herein can change the current/voltage levels being applied to the drive motor if the actual velocity of the media is different than the intended velocity of the media so as to correct the velocity of the media. Thus, when referencing the predetermined relationship, embodiments herein produce a velocity ratio correction factor. This velocity ratio correction factor can be applied continuously during any velocity profile of the drive motor, or i t can be used to calculate the accumulated error in sheet position and then to apply a correction near the end of the velocity profile. 24
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Patent Agency Ranking
公开(公告)号：BRPI0501774A
公开(公告)日：2006-01-31
申请号：BRPI0501774
申请日：2005-05-19
Applicant: XEROX CORP
Inventor： KNIERIM DAVID L , WILLIAMS LLOYD A , DEJONG JOANNES N M
Abstract: More accurately correcting sheet position and skew in a desired print media sheet trajectory in a printer paper path, with a registration system including sheet drive nips defined by laterally spaced and differentially driven elastomer surfaced frictional sheet drive rollers (15A,15B) and mating undriven idler rollers (16A,16B) have a non-slip rotational sheet engagement. The undriven idler rollers have rotary encoders (110A,110B) producing encoder signals corresponding to their rotation by a sheet in the nip, which encoder signals are provided to a controller for the registration system (100) to control forward and differential drive motor systems (M1,M2) for the sheet drive rollers (15A,15B) so as to substantially correct for errors in the desired trajectory of said sheet by sheet drag forces acting on the elastomer surfaced sheet drive rollers in the sheet drive nips.
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公开(公告)号：BR0202867A
公开(公告)日：2003-06-03
申请号：BR0202867
申请日：2002-07-24
Applicant: XEROX CORP
Inventor： WILLIAMS LLOYD A , DEJONG JOANNES N M , DONDIEGO MATTHEW , SAVINO MICHAEL J
Abstract: A sheet registration system, especially for printers, with a lower cost and lower mass system for sheets deskewing, and optionally also compatibly providing transverse registration repositioning of the sheets. Mechanisms are disclosed which need only one main drive motor to drive both of the two spaced apart sheet feeding nips, together with a much lower power, and lower cost, deskewing differential drive system for providing the relative differential angular movement of the two spaced sheet feeding nips to achieve the desired amount of sheet deskewing movement, without interrupting the forward feeding movement of the sheet.
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公开(公告)号：CA2394427A1
公开(公告)日：2003-01-27
申请号：CA2394427
申请日：2002-07-22
Applicant: XEROX CORP
Inventor： DEJONG JOANNES N , DONDIEGO MATTHEW , WILLIAMS LLOYD A , SAVINO MICHAEL J
Abstract: A sheet registration system, especially for printers, with a lower cost a nd lower mass-movement system for both sheet deskewing and transverse registration repositioning of the sheets in the same integral system, especially for higher speed printing. Only one main drive motor can drive both of the two spaced apart sheet feeding nips, together with a much lower power, and lower cost, deskewing differential drive system for providing the relative differential angular movement of the two spaced sheet feeding nips to achieve the desired amount of sheet deskewing movement, without interrupting the forward feeding movement of the sheet. Also disclosed are extensive further reductions in the component mass of the lateral translation movement for lateral sheet registration.
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公开(公告)号：DE69616142T2
公开(公告)日：2002-06-06
申请号：DE69616142
申请日：1996-05-01
Applicant: XEROX CORP
Inventor： DOMOTO GERALD A , DEJONG JOANNES N , KNAPP JOHN F , WILLIAMS LLOYD A , CASTELLI VITTORIA
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公开(公告)号：MX9707494A
公开(公告)日：1998-04-30
申请号：MX9707494
申请日：1997-09-30
Applicant: XEROX CORP
Inventor： WILLIAMS LLOYD A , DEJONG JOANNES N M , WOLF BARRY M
Abstract: La presente invencion se refiere a un sistema de calibracion para un dispositivo de alineado y registro para una máquina de impresion electrofotográfica. El método incluye a) mover una hoja desde una primer posicion a una segunda posicion sobre una trayectoria de papel; b) detectar la posicion de la hoja en la primer posicion y la segunda posicion; c) elegir un valor de correccion, para provocar que la hoja cambie una posicion lateral desde la primer posicion a la segunda posicion; d) repartir las etapas de movimiento, deteccion y seleccion hasta que se realiza un ajuste predeterminado cuando se mueve la hoja desde la primer posicion a la segunda posicion para determinar un valor de calibracion adecuado. Un sistema de calibracion para un dispositivo de alineado y registro para una máquina de impresion electrofotográfica.
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