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    EDGE SENSOR GAIN CALIBRATION FOR PRINTMAKING DEVICES
    1.
    发明申请
    EDGE SENSOR GAIN CALIBRATION FOR PRINTMAKING DEVICES 有权
    边缘传感器增益校准用于打印设备

    公开(公告)号：US20110049793A1

    公开(公告)日：2011-03-03

    申请号：US12547762

    申请日：2009-08-26

    申请人： Joannes N.M. deJong ,  Lloyd A. Williams

    发明人： Joannes N.M. deJong ,  Lloyd A. Williams

    IPC分类号： B65H7/02

    CPC分类号： B65H9/002 ,  B65H9/106 ,  B65H2404/1424 ,  B65H2553/412 ,  B65H2557/20 ,  B65H2557/2423 ,  B65H2557/61

    摘要： According to aspects illustrated herein, there is provided a method, a system, and a printmaking device for calibrating sensors. The method begins by transporting a media sheet along a media path, the sheet having a lead edge, a trail edge and a measurement edge. Next, the method halts the forward motion of the sheet after the lead edge of the sheet passes a fixed reference. After that, the method moves the sheet laterally relative to the media path across the at least one edge sensor using a sheet actuator. Then, the method records an actual position of the sheet actuator and an output of at least one edge sensor. Finally, the method calculates a calibration factor based on the actual position of the sheet actuator and the output of the at least one edge sensor.

    摘要翻译： 根据本文所示的方面，提供了一种用于校准传感器的方法，系统和版权制作装置。 该方法开始于沿着介质路径传送介质片，片材具有前缘，轨迹边缘和测量边缘。 接下来，该方法在片材的引导边缘通过固定的基准之后停止片材的向前运动。 之后，该方法使用片材致动器使片材横向移动穿过至少一个边缘传感器的介质路径。 然后，该方法记录片材致动器的实际位置和至少一个边缘传感器的输出。 最后，该方法基于片材致动器的实际位置和至少一个边缘传感器的输出来计算校准因子。

    Calibration of the fundamental and harmonic once-around velocity variations of encoded wheels
    2.
    发明授权
    Calibration of the fundamental and harmonic once-around velocity variations of encoded wheels 失效
    校准编码轮的基本和谐波一次速度变化

    公开(公告)号：US07502703B2

    公开(公告)日：2009-03-10

    申请号：US11775015

    申请日：2007-07-09

    申请人： Joannes N. M. DeJong ,  Lloyd A. Williams

    发明人： Joannes N. M. DeJong ,  Lloyd A. Williams

    IPC分类号： G01P21/00 ,  G06F19/00

    CPC分类号： G01P3/00 ,  B65H5/062 ,  B65H7/06 ,  B65H9/002 ,  B65H2404/143 ,  B65H2511/20 ,  B65H2511/529 ,  B65H2513/106 ,  B65H2513/11 ,  B65H2553/51 ,  B65H2557/23 ,  B65H2557/2423 ,  B65H2557/61 ,  G01P21/02 ,  B65H2220/01 ,  B65H2220/02 ,  B65H2220/09 ,  B65H2220/03

    摘要： A method of calibrating once-around and harmonic errors of encoded nips is provided. An encoder with an index pulse is used to measure the velocity and rotation of the driven wheel or idler. The geometry of the drive train and wheel and idler is chosen so that their once around and harmonic frequencies are unique such that no other drive errors will generate these frequencies. The method includes running the idler or wheel at substantially constant velocity for N revolutions. Each index triggers the collection of velocity data, which is averaged for N revolutions. This process detects drive train motion errors that are periodic with respect to the timing of the index pulse (i.e., once per revolution of the wheel or idler). Once the velocity errors have been measured, corrections are made. This method may be incorporated in xerographic machines as part of a setup or calibration procedure.

    摘要翻译： 提供了一次校准和编码压区的谐波误差的方法。 具有索引脉冲的编码器用于测量从动轮或惰轮的速度和转速。 选择传动系和轮和惰轮的几何形状，使得它们的一次和谐频率是唯一的，使得没有其他驱动误差将产生这些频率。 该方法包括以大致恒定的速度运行惰轮或轮子进行N转。 每个索引触发速度数据的采集，这是N转的平均值。 该过程检测相对于索引脉冲的定时周期性的驱动系运动误差（即，轮或惰轮每转一次）。 一旦测量出速度误差，就进行校正。 该方法可以作为设置或校准过程的一部分并入静电印刷机中。

    Method and apparatus for detecting the profile and feeding state of paper sheets
    3.
    发明授权
    Method and apparatus for detecting the profile and feeding state of paper sheets 失效
    用于检测纸张的轮廓和进给状态的方法和装置

    公开(公告)号：US4623975A

    公开(公告)日：1986-11-18

    申请号：US442413

    申请日：1982-11-17

    申请人： Tomio Kagami

    发明人： Tomio Kagami

    IPC分类号： G07D7/12 ,  G07D7/16 ,  G07D7/18 ,  G01B11/04 ,  G06F15/36

    CPC分类号： G07D7/12 ,  B65H7/08 ,  B65H7/14 ,  G07D7/162 ,  G07D7/185 ,  B65H2511/12 ,  B65H2511/242 ,  B65H2511/522 ,  B65H2513/50 ,  B65H2553/416 ,  B65H2553/822 ,  B65H2557/24 ,  B65H2557/2423 ,  B65H2557/2426 ,  B65H2557/31 ,  B65H2557/35 ,  B65H2701/1311 ,  B65H2701/1912

    摘要： At least one sheet of paper is conveyed in a feeding direction along a conveyance path. A line perpendicular to the feeding direction of the conveyed sheet includes at least first and second distinct view field regions (lengths) separated from one another by the center of the path. The light directed toward the sheet which passes across the path along the perpendicular line is optically scanned, and a value of the dimension a conveyed sheet projects into each of the first and second view field regions is produced for each scan. The sheet is repetitively scanned a plurality of times as it is conveyed along the path, and the values obtained, for each scan, for at least for the first and second regions are summed with a predetermined constant value to produce a sequence of width values representing the widths of the conveyed paper sheet at a corresponding plurality of longitudinal positions along the sheet. The width values from the sequence which fall within a range about a predetermined nominal width value of the sheet (the range being this nominal width value plus or minus a preset allowable deviation) are selected and used for computing the average width value of the sheet. The average width value is compared with a reference width value. Document skew, dog-ear, puncture and other parameters may also be determined from the measured width values.

    摘要翻译： 至少一张纸沿输送路径沿输送方向输送。 垂直于所输送的纸的进给方向的线包括通过路径的中心彼此分开的至少第一和第二不同的视野区域（长度）。 对沿着垂直线穿过路径的纸张进行光学扫描，并且为每个扫描产生传送的纸张突出到每个第一和第二视场区域中的尺寸的值。 片材沿着路径被传送多次被重复地扫描，并且对于每个扫描获得的至少对于第一和第二区域获得的值与预定的常数值相加以产生表示 所输送的纸张在沿纸张的相应多个纵向位置的宽度。 选择落入在纸张的预定标称宽度值范围内的顺序的宽度值（这个标称宽度值的范围加上或减去预设的允许偏差），并用于计算纸张的平均宽度值。 将平均宽度值与参考宽度值进行比较。 文件偏斜，狗耳，穿刺等参数也可以根据测量的宽度值来确定。

    Conveying device
    6.
    发明授权
    Conveying device 有权
    输送装置

    公开(公告)号：US08888094B2

    公开(公告)日：2014-11-18

    申请号：US14185105

    申请日：2014-02-20

    申请人： Riso Kagaku Corporation

    发明人： Eiji Hori

    IPC分类号： B65H7/02 ,  B65H7/12

    CPC分类号： B65H9/006 ,  B65H7/125 ,  B65H2301/44735 ,  B65H2301/4474 ,  B65H2301/51212 ,  B65H2511/22 ,  B65H2511/524 ,  B65H2515/60 ,  B65H2553/412 ,  B65H2553/51 ,  B65H2557/23 ,  B65H2557/2423 ,  B65H2220/01 ,  B65H2220/02 ,  B65H2220/03

    摘要： There is provided a conveying device including a controller that makes a conveying speed of a printing medium conveyed by a first conveyor unit be higher than a conveying speed of a printing medium conveyed by a second conveyor unit and makes the printing medium be conveyed while forming sagging on the printing medium between the first and second conveyor units. The controller makes a sheet sensor acquire the amount of light, which passes through the printing medium conveyed between a light emitting part and a light receiving part, as the amount of received light and determines whether or not the double-feed of the printing media has occurred only when this amount of received light is smaller than the double-feed criterion amount of received light at substantially the same conveying distance of the printing medium conveyed by the first conveyor unit.

    摘要翻译： 提供了一种输送装置，其包括使由第一输送单元输送的打印介质的输送速度高于由第二输送单元输送的打印介质的输送速度的控制器，并使打印介质在形成下垂时被输送 在第一和第二输送单元之间的打印介质上。 控制器使纸张传感器获取通过在发光部分和光接收部分之间传送的打印介质的光量作为接收光量，并确定打印介质的双重进给是否具有 仅当该接收光量比由第一传送单元输送的打印介质基本相同的传送距离处的接收光的双重进给标准量小时才发生。

    Method for optimizing feeder module feeder tray capacity
    7.
    发明授权
    Method for optimizing feeder module feeder tray capacity 有权
    优化进料器模块进料器托盘容量的方法

    公开(公告)号：US08820739B1

    公开(公告)日：2014-09-02

    申请号：US13856462

    申请日：2013-04-04

    申请人： Xerox Corporation

    发明人： Michael J Linder ,  Benjamin Paulson

    IPC分类号： B65H5/00 ,  B65H7/02

    CPC分类号： B65H1/14 ,  B65H7/04 ,  B65H2405/15 ,  B65H2405/332 ,  B65H2511/152 ,  B65H2511/22 ,  B65H2511/30 ,  B65H2511/414 ,  B65H2557/2423 ,  G03G15/553 ,  G03G15/6508 ,  B65H2220/01 ,  B65H2220/02

    摘要： A method and apparatus that adjusts the step count at which a tray low paper condition is declared based on the number of outstanding feed commitments and the average number of feeds between tray increments. After a first tray increment has occurred, feeder software will wait a pre-determined number of additional tray increments, and will then calculate the average number of feeds between increments. Using this average and the number of outstanding feed commitments a low paper condition is declared when a predetermined logical test is true.

    摘要翻译： 一种方法和装置，其基于未完成的馈送承诺的数目和平台托盘增量之间的平均进给次数来调整托盘低纸张条件的步进计数。 在发生第一个纸盘增量之后，进纸器软件将等待预定数量的附加纸盘增量，然后计算增量之间的平均送料次数。 使用该平均值和未完成的饲料承诺数量，当预定的逻辑测试为真时，声明低纸张条件。

    IMAGE FORMING APPARATUS
    8.
    发明申请
    IMAGE FORMING APPARATUS 失效
    图像形成装置

    公开(公告)号：US20110249052A1

    公开(公告)日：2011-10-13

    申请号：US13051947

    申请日：2011-03-18

    申请人： Fumihiro Ueno

    发明人： Fumihiro Ueno

    IPC分类号： B41J29/38

    CPC分类号： B65H43/06 ,  B65H7/18 ,  B65H2511/152 ,  B65H2511/22 ,  B65H2511/514 ,  B65H2513/10 ,  B65H2513/50 ,  B65H2513/511 ,  B65H2513/512 ,  B65H2513/53 ,  B65H2557/2423 ,  B65H2701/1311 ,  B65H2701/1313 ,  B65H2801/06 ,  B65H2220/01 ,  B65H2220/02 ,  B65H2220/03

    摘要： An image forming apparatus includes an image forming unit, a stacking unit, a first detection unit, a second detection unit, and a control unit. The image forming unit forms an image on a recording medium. The stacking unit stacks recording media on which images are formed. The first detection unit detects a conveyance interval between a trailing edge of a first recording medium and a leading edge of a second recording medium conveyed subsequent to the first recording medium conveyance. The second detection unit is disposed downstream of the first detection unit and detects the conveyance interval and detects whether an amount of recording media stacked on the stacking unit exceeds a predetermined amount. The control unit changes, according to a result of comparing detected conveyance intervals, conveyance timing of the second recording medium to widen the conveyance interval detected by the first detection unit.

    摘要翻译： 图像形成装置包括图像形成单元，堆叠单元，第一检测单元，第二检测单元和控制单元。 图像形成单元在记录介质上形成图像。 堆叠单元堆叠形成图像的记录介质。 第一检测单元检测第一记录介质的后缘与在第一记录介质传送之后传送的第二记录介质的前缘之间的传送间隔。 第二检测单元设置在第一检测单元的下游，并且检测输送间隔，并且检测堆叠在堆叠单元上的记录介质的量是否超过预定量。 控制单元根据检测到的输送间隔的比较结果，改变第二记录介质的传送定时，以扩大由第一检测单元检测的传送间隔。