公开(公告)号：DE69122058T2

公开(公告)日：1997-02-20

申请号：DE69122058

申请日：1991-12-12

Applicant: XEROX CORP

Inventor： DEJONG JOANNES N M ,  RICCIARDELLI JOHN J ,  LEAN MENG H ,  SCHWEID STUART A ,  WOLF BARRY ,  LOFTHUS ROBERT M

IPC: G01D5/245 ,  H03M1/64 ,  H03M1/24 ,  G01D5/244

Abstract: An inductive-type rotary encoder (2) capable of generating an output signal indicative of the angular position of a rotor (4) to a stator (6) is disclosed. The rotary encoder (2) includes a stator (6) having at least one conductive pattern on one side thereof, and a rotor (4) having another conductive pattern on one side thereof which faces the at least one conductive pattern of the stator (6). The conductive patterns are inductively coupled to one another so as to generate an output signal indicative of the angular position of the rotor (4) relative to the stator (6). In order to reduce the overall size and number of parts required, the circuitry for energizing the stator conductive pattern(s) and for generating the output signal can be provided on a printed circuit board, the opposite side of which contains the at least one stator conductive pattern. In order to reduce noise as well as to reduce the first harmonic error, lead lines for attaching the stator and rotor conductive patterns to the controlling circuitry and a return line which extends along substantially the entire length of the rotor or stator conductive patterns and attaches to one of the lead lines are provided and specially located relative to undulations of the conductive patterns. Additionally, the length of spokes which define undulations of the respective rotor and stator conductive patterns can be controlled to improve the performance of the rotary encoder. A rotary encoder (2) including inductively coupled rotor and stator conductive patterns for generating a relative angular position (or rotary speed) of the rotor (4) relative to the stator (6), as well as stator and rotor index pulse patterns inductively coupled for generating an index pulse once per revolution of the rotor relative to the stator is also provided.

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

IPC: B41J13/26 ,  B41J2/07

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.

公开(公告)号：DE60220195D1

公开(公告)日：2007-07-05

申请号：DE60220195

申请日：2002-01-16

Applicant: XEROX CORP

Inventor： CASTELLI VITTORIO ,  DEJONG JOANNES N M ,  WILLIAMS LLLOYD A ,  ANDERSON HAROLD M

IPC: B41J11/46 ,  B41J19/18

Abstract: An apparatus and method are provided for the use of an optical sensor to determine the position of a printing device relative to a piece of paper or a paper-handling surface. The optical sensor reads marks to detect movement and/or direction of movement or spacing of imprints on the paper. Benefits include swath stitching calibration, color to color registration, producing printing device alignment data and generating information for printing device firing signals. The present invention is applicable to a wide field of printing technologies, including, but not limited to, acoustic ink printing, thermal ink jet printing, piezo ink jet printing, ionographic printing and a variety of other printing technologies involving the need for positioning a printing device relative to a piece of paper.

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

IPC: B41F21/00 ,  B41F33/00 ,  B41J11/24 ,  B65H9/00 ,  H02P31/00

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

公开(公告)号：DE60214445T2

公开(公告)日：2006-12-21

申请号：DE60214445

申请日：2002-01-16

Applicant: XEROX CORP

Inventor： CASTELLI VITTORIO ,  DEJONG JOANNES N M ,  WILLIAMS LLLOYD A ,  ANDERSON HAROLD M

IPC: B41J13/10 ,  B41J13/14 ,  B65H5/04 ,  B65H5/06

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

IPC: B65H9/00 ,  B65H9/10 ,  B65H7/00

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.

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

IPC: B65H7/10 ,  B65H9/16 ,  G03G15/00

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.

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

IPC: B65H9/10 ,  B41J13/00 ,  G03G15/00 ,  G03G13/00

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.

公开(公告)号：DE69122058D1

公开(公告)日：1996-10-17

申请号：DE69122058

申请日：1991-12-12

Applicant: XEROX CORP

Inventor： DEJONG JOANNES N M ,  RICCIARDELLI JOHN J ,  LEAN MENG H ,  SCHWEID STUART A ,  WOLF BARRY ,  LOFTHUS ROBERT M

IPC: G01D5/245 ,  H03M1/64 ,  H03M1/24 ,  G01D5/244

Abstract: An inductive-type rotary encoder (2) capable of generating an output signal indicative of the angular position of a rotor (4) to a stator (6) is disclosed. The rotary encoder (2) includes a stator (6) having at least one conductive pattern on one side thereof, and a rotor (4) having another conductive pattern on one side thereof which faces the at least one conductive pattern of the stator (6). The conductive patterns are inductively coupled to one another so as to generate an output signal indicative of the angular position of the rotor (4) relative to the stator (6). In order to reduce the overall size and number of parts required, the circuitry for energizing the stator conductive pattern(s) and for generating the output signal can be provided on a printed circuit board, the opposite side of which contains the at least one stator conductive pattern. In order to reduce noise as well as to reduce the first harmonic error, lead lines for attaching the stator and rotor conductive patterns to the controlling circuitry and a return line which extends along substantially the entire length of the rotor or stator conductive patterns and attaches to one of the lead lines are provided and specially located relative to undulations of the conductive patterns. Additionally, the length of spokes which define undulations of the respective rotor and stator conductive patterns can be controlled to improve the performance of the rotary encoder. A rotary encoder (2) including inductively coupled rotor and stator conductive patterns for generating a relative angular position (or rotary speed) of the rotor (4) relative to the stator (6), as well as stator and rotor index pulse patterns inductively coupled for generating an index pulse once per revolution of the rotor relative to the stator is also provided.

公开(公告)号：JP2011057448A

公开(公告)日：2011-03-24

申请号：JP2010198900

申请日：2010-09-06

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： WILLIAMS LLOYD A ,  CASTILLO RUDDY ,  DEJONG JOANNES N M

IPC: B65H29/70

CPC classification number: B65H5/062 ,  B65H2301/44334 ,  B65H2301/44336 ,  B65H2301/51214 ,  B65H2701/1315 ,  B65H2801/06

Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for holding a sheet which form a side edge curl. SOLUTION: The device has: a first shape element having an outside part of turning in the first direction; a second shape element having an outside part of turning in the opposite second direction of the first direction; a first sandwiching element adjacent to the first shape element and forming a first passage between the first shape element and itself; and a second sandwiching element adjacent to the second shape element and forming a second passage between the second shape element and itself. The first passage is for forming an edge curl on the first side edge of a medium sheet. The second passage is for forming the edge curl on the second side edge of the medium sheet. The second side edge is parallel to the first side edge. The first and second side edges are parallel to the process direction for supplying the medium sheet to the device. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于保持形成侧边缘卷曲的片材的方法和装置。 解决方案：该装置具有：具有沿第一方向转动的外侧部分的第一形状元件; 第二形状元件，其具有在第一方向的相反的第二方向上转动的外侧部分; 邻近所述第一形状元件的第一夹层元件，并且在所述第一形状元件与其本身之间形成第一通道; 以及与所述第二形状元件相邻并且在所述第二形状元件和其本身之间形成第二通道的第二夹持元件。 第一通道用于在介质片材的第一侧边缘上形成边缘卷曲。 第二通道用于在中间片的第二侧边缘上形成边缘卷曲。 第二侧边缘平行于第一侧边缘。 第一侧边缘和第二侧边缘平行于用于将介质片材供应到设备的处理方向。 版权所有（C）2011，JPO＆INPIT