公开(公告)号：US20030128401A1

公开(公告)日：2003-07-10

申请号：US10041025

申请日：2002-01-07

Applicant: XEROX CORPORATION

Inventor： Brian R. Conrow ,  David M. Kerxhalli

IPC: H04N001/23 ,  H04N001/29

CPC classification number: H04N1/00015 ,  H04N1/00002 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00087 ,  H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0098 ,  H04N2201/0471 ,  H04N2201/04717 ,  H04N2201/04732 ,  H04N2201/04755

Abstract: A method of correcting output image squareness in a laser printer system having a Raster Output Scanning (ROS) device with a pivotal mounting. The method includes printing a test pattern that includes a plurality of markers printed in a predetermined geometric arrangement and calculating a skew angle based on the measured distances, preferably using the Law of Cosines. The ROS device is then automatically rotated by an amount sufficient to correct the skew angle. The ROS rotation is performed automatically by an adjustment system connected to the ROS. The method optionally includes a scanner for scanning the test pattern image and making the measurements automatically via a program configured to analyze the scanned image.

Abstract translation: 一种在具有具有枢轴安装的光栅输出扫描（ROS）装置的激光打印机系统中校正输出图像矩形度的方法。 该方法包括打印包括以预定几何布置印刷的多个标记的测试图案，并且优选地使用余弦法来计算基于测量距离的斜角。 然后，ROS装置自动旋转足以校正歪斜角度的量。 ROS旋转由连接到ROS的调整系统自动执行。 该方法可选地包括扫描器，用于扫描测试图案图像并通过经配置以分析扫描图像的程序自动进行测量。

公开(公告)号：US20040114025A1

公开(公告)日：2004-06-17

申请号：US10630063

申请日：2003-07-30

Applicant: Xerox Corporation

Inventor： David M. Kerxhalli ,  Keith A. May ,  Brian R. Conrow ,  Michael J. Martin ,  Michael J. Thomas

IPC: B41J002/47 ,  B41J002/435

CPC classification number: G03G15/0152 ,  G03G15/0163 ,  G03G2215/0161

Abstract: A method for repositioning a mark on a belt after an image on paper registration process, which includes printing a test pattern, measuring at least one test pattern parameter, detecting a mark on a belt and detecting at least one imaging error associated therewith, using the at least one test pattern parameter and the at least one imaging error to determine the lateral distance required to shift a particular image to a desired location on the belt and shifting the image to the desired location.

Abstract translation: 一种用于在纸张登记处理之后的图像上重新定位皮带上的标记的方法，其包括打印测试图案，测量至少一个测试图案参数，检测带上的标记并检测与其相关联的至少一个成像错误，使用 至少一个测试图案参数和至少一个成像误差，以确定将特定图像移动到所述带上的期望位置并将图像移动到期望位置所需的横向距离。

公开(公告)号：US20040036847A1

公开(公告)日：2004-02-26

申请号：US10646594

申请日：2003-08-22

Applicant: Xerox Corporation

Inventor： Brian R. Conrow ,  David M. Kerxhalli

IPC: G03B027/32 ,  G03B027/52

CPC classification number: H04N1/4095 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00082 ,  H04N1/00092 ,  H04N1/047 ,  H04N1/12 ,  H04N2201/03108 ,  H04N2201/04717 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04756 ,  H04N2201/04768 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04793

Abstract: The relationship between first and second side images is evaluated to determine how the position of the paper and/or the size and arrangement of an image can be manipulated to compensate for paper shrinkage caused by fusing. Show through is reduced by performing setup to adjust a pixel clock frequency and/or a photoreceptor speed, determining a residual magnification error, determining margin shifts to compensate for the residual magnification error, and applying the margin shifts. Paper shrink effects on registration can be compensated for using determinations made during a typical printer setup. Show through errors can be reduced without using a paper conditioner to pre-shrink or re-wet the paper. In simplex and duplex printing, the show through errors worsen as the image moves away from the registration edge. Using information obtained during setup, a margin shift is determined that results in a significant reduction in the maximum show through for each image.

Abstract translation: 评估第一和第二侧面图像之间的关系，以确定如何操纵纸张的位置和/或图像的尺寸和布置以补偿由熔融引起的纸张收缩。 通过执行设置来调整像素时钟频率和/或感光体速度，确定剩余倍率误差，确定边缘偏移以补偿残余放大误差并应用边缘偏移来减少显示。 可以通过在典型打印机设置期间进行的确定来补偿注册时的纸张收缩效果。 无需使用纸张调节器对纸张进行预收缩或再湿润即可显示错误。 在单面和双面打印中，当图像从注册边缘移开时，显示错误会恶化。 使用在设置期间获得的信息，确定了导致每个图像的最大显示的显着减少的边距偏移。

公开(公告)号：US20030133000A1

公开(公告)日：2003-07-17

申请号：US10046166

申请日：2002-01-16

Applicant: XEROX CORPORATION

Inventor： Brian R. Conrow ,  David M. Kerxhalli

IPC: B41J002/385

CPC classification number: B41J11/008

Abstract: Initial setup of image to sheet (IOS) or image to paper (IOP) registration in a printing device such as, for example, an electrographic printer, is accomplished in a single step that uses an initial set of measurements to determine and correct each of the independent registration errors, including image squareness/ROS skew, image skew/paper skew, lateral magnification, process magnification, lateral direction IOS or IOP position, and process direction IOS or IOP position simultaneously. A set of algorithms is used to perform a series of geometrical transformations to determine each of the six errors affecting IOS or IOP registration.

Abstract translation: 在诸如电印打印机的打印设备中的图像到纸（IOS）或图像到纸（IOP）注册的初始设置在单个步骤中完成，该步骤使用初始测量集来确定和校正每个 独立注册错误，包括图像平方度/ ROS偏移，图像偏斜/纸张偏移，横向放大，过程放大，横向IOS或IOP位置，以及过程方向IOS或IOP位置。 一组算法用于执行一系列几何变换，以确定影响IOS或IOP注册的六个错误中的每一个。

公开(公告)号：US20020070497A1

公开(公告)日：2002-06-13

申请号：US09735320

申请日：2000-12-12

Applicant: Xerox Corporation

Inventor： Elden R. Morrison ,  Brian R. Conrow

IPC: B65H029/00

CPC classification number: G03G15/234 ,  B65H15/00 ,  B65H29/12 ,  B65H2301/33312 ,  Y10S271/902

Abstract: A method and apparatus for inverting sheets traveling through a machine with an inverter having a reversing chute and a reversing nip in the reversing chute. An incoming sheet is receiving into the reversing chute. The reversing nip reverses the direction of travel of the sheet and drives sheet out of the reversing chute. A gap is opened in said reversing nip, while the outgoing sheet still extends through the reversing nip. A subsequent incoming sheet is received into the reversing chute and through the gap in the reversing nip, while the outgoing sheet still extends through the gap. The gap is closed after the outgoing sheet has exited the reversing nip, such the reversing nip reverses the direction of travel of the subsequent incoming sheet and drives the sheet out of the reversing chute. The machine may be a printing or copying machine.