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    • 1. 发明授权
    • Lateral and skew registration using closed loop feedback on the paper edge position
    • 在纸张边缘位置使用闭环反馈的横向和偏斜配准
    • US07422211B2
    • 2008-09-09
    • US11040396
    • 2005-01-21
    • Joannes N M DejongLloyd A. WilliamsBarry P. MandelMartin Krucinski
    • Joannes N M DejongLloyd A. WilliamsBarry P. MandelMartin Krucinski
    • B65H9/16
    • B65H9/002B65H9/101B65H2301/331B65H2511/242B65H2511/514B65H2701/1315B65H2220/01
    • A closed loop feedback method that continuously adjusts the lateral and skew position of a sheet includes a first sensor that is used to measure lateral sheet edge position. A second sensor measures the lateral sheet edge position at a certain distance from the first sensor. Sheet skew values can thus be calculated. Lateral and skew controllers provide outputs to lateral and skew actuators, respectively, to adjust the sheet position. A different method of registering sheets laterally and in skew enables active sheet deskew without translating the sheet in the cross-process direction. A sensor carriage position is controlled to find the sheet edge after which deskew control can start. The average value of the carriage position can then be fed in a feedforward manner to move the image location to match the average paper position. This achieves good average lateral registration and active skew control at a reduced cost.
    • 连续地调整片材的横向和偏斜位置的闭环反馈方法包括用于测量侧片边缘位置的第一传感器。 第二传感器测量距离第一传感器一定距离的侧片边缘位置。 因此可以计算纸张偏移值。 横向和偏斜控制器分别为侧向和偏斜执行器提供输出,以调整纸张位置。 在横向和歪斜的情况下对纸张进行登记的不同方法使活动的纸张不会将纸张在交叉过程方向上平移。 控制传感器支架位置以找到可以开始去歪斜控制的纸张边缘。 然后可以以前馈方式馈送托架位置的平均值,以移动图像位置以匹配平均纸张位置。 这以较低的成本实现了良好的平均横向配准和主动偏斜控制。
    • 5. 发明授权
    • Method for calibrating color in a printing device
    • 校准打印设备中颜色的方法
    • US07206008B2
    • 2007-04-17
    • US10975654
    • 2004-10-28
    • Joannes N M DejongLloyd A. WilliamsVittorio Castelli
    • Joannes N M DejongLloyd A. WilliamsVittorio Castelli
    • G03G13/01
    • G03G15/0152G03G15/0163G03G2215/0161G03G2215/017
    • A method for improving color-to-color registration in a printing device. The method includes printing a plurality of multi-color images, measuring the relative locations of a first portion of each multi-color image having a first color of each image and a second portion of each multi-color image having a second color of each image, for each image, comparing at least one difference between the first portion's location and the second portion's location with at least one desired difference between the first portion's location and the second portion's location to generate a list of positional errors, using a least square regression analysis of the list of positional errors to determine shift amounts required for placement of each first portion in subsequently generated images to within a desired degree of accuracy, and adjusting the placement of the first portion of each subsequently generated image by the determined shift amounts.
    • 一种用于改善打印设备中的颜色到颜色配准的方法。 该方法包括打印多个多色图像,测量具有每个图像的第一颜色的每个多色图像的第一部分的相对位置以及具有每个图像的第二颜色的每个多色图像的第二部分 对于每个图像,使用最小二乘回归分析将第一部分的位置和第二部分的位置之间的至少一个差异与第一部分的位置和第二部分的位置之间的至少一个期望的差异进行比较以生成位置错误的列表 确定位置误差列表,以确定将随后生成的图像中的每个第一部分放置在期望的精度范围内所需的移位量,以及将每个后续生成的图像的第一部分的位置调整所确定的移位量。