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21.发明申请公开(公告)号：US20120148322A1
公开(公告)日：2012-06-14
申请号：US12963002
申请日：2010-12-08
CPC分类号： B65H7/14 , B65H2511/17 , B65H2553/416 , B65H2701/1311 , B65H2801/06 , G01B11/255 , G03G15/6576 , G03G2215/00662 , G03G2215/00704 , B65H2220/03 , B65H2220/01
摘要： A method and system for accurately measuring a lead edge and a trail edge media curl utilizing an angled array sensor. One or more curled media sheets can be propelled in a process direction via a set of rollers/nips associated with a curler from a leading edge and/or trailing edge towards the angled array sensor. The angled array sensor having a rotation vector in the cross-process direction can be placed upstream or downstream of a media-propelling device and at an angle relative to the media sheet exiting the curler in order to calculate a function of sheet curl. The function of sheet curl can be obtained by measuring a point at which the propelled media sheet touches an array associated with the angled array sensor. Such a curl measurement approach enhances accuracy and robustness to environmental induced errors.
摘要翻译： 一种利用倾斜阵列传感器精确测量前缘和尾缘介质卷曲的方法和系统。 一个或多个卷曲的介质片可以通过与卷发器相关联的一组辊/片，从前缘和/或后缘向成角度的阵列传感器在加工方向上推进。 具有交叉处理方向的旋转矢量的倾斜阵列传感器可以放置在介质推进装置的上游或下游并且相对于离开卷发器的介质片成一定角度，以计算片卷曲的功能。 可以通过测量推进的介质片接触与倾斜的阵列传感器相关联的阵列的点来获得片材卷曲的功能。 这种卷曲测量方法提高了对环境引起的误差的准确性和鲁棒性。
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公开(公告)号：US5287162A
公开(公告)日：1994-02-15
申请号：US899187
申请日：1992-06-16
IPC分类号： B41J2/525 , B65H23/032 , B65H43/08 , G03B27/14 , G03G15/00 , G03G15/01 , G03G15/36 , G03G21/00 , H04N1/46 , H04N1/50
CPC分类号： H04N1/506 , G03G15/0194 , G03G2215/0119
摘要： A detection system includes a marking device for applying to a process medium a first chevron from a first printer, a second chevron from a second printer and a third chevron from both the first printer and the second printer, the third chevron having a first element applied from the first printer and a second element applied from the second printer. The detection system further includes a detection device for detecting a matrix of times including three pluralities of times, each of the three pluralities of times corresponding to a respective time of passage of the first, second and third chevrons by the detection device. The detection system further includes a determining device for determining the alignment error based on a function of the three pluralities of times. A control system includes a marking device for applying to a process medium a first chevron from a first printer, a second chevron from a second printer and a third chevron from both the first printer and the second printer. The control system further includes a detection device for detecting a matrix of times including three pluralities of times, each of the three pluralities of times corresponding to a time of passage of a respective one of the first, second and third chevrons by the detection device, a determining device for determining an alignment error based on a function of the matrix of times, and a control device for minimizing the alignment error.
摘要翻译： 检测系统包括：标记装置，用于从第一打印机向处理介质施加第一人字纹，来自第二打印机的第二人字纹和来自第一打印机和第二打印机的第三人字纹，第三人字形具有应用的第一元件 从第一打印机和从第二打印机应用的第二元件。 检测系统还包括检测装置，用于检测包括三次次数的矩阵矩阵，三次中的每一个对应于由检测装置通过第一，第二和第三人字形的相应时间。 该检测系统还包括一个确定装置，用于基于三个多次的功能确定对准误差。 控制系统包括用于从第一打印机向处理介质施加第一人字纹的标记装置，来自第二打印机的第二人字纹和来自第一打印机和第二打印机的第三人字纹。 该控制系统还包括检测装置，用于检测包括三次的时间矩阵，其中三个时间段中的每一个对应于由检测装置的第一，第二和第三人字形中的相应一个通过的时间， 用于基于时间矩阵的函数确定对准误差的确定装置，以及用于最小化对准误差的控制装置。
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23.发明授权公开(公告)号：US08840241B2
公开(公告)日：2014-09-23
申请号：US13589356
申请日：2012-08-20
IPC分类号： B41J2/01
CPC分类号： B41J11/0085 , B41J11/007
摘要： A system and method for adjusting an electrostatic field in a print zone of an inkjet printer. The printer includes an electrostatic tacking device to hold a sheet of recording media to a transport belt moving through the print zone for imaging with one or more inkjet printheads. A sensor determines the electrostatic field before the print zone and adjusts the electrostatic field with a corotron disposed after the tacking device and before the print zone. Reduction of the electrostatic field in the print zone can reduce imaging errors resulting from electrostatic fields.
摘要翻译： 一种用于调节喷墨打印机的打印区域中的静电场的系统和方法。 打印机包括静电贴装装置，用于将一张记录介质保持在移动通过打印区域的传送带上，用于与一个或多个喷墨打印头进行成像。 传感器确定打印区域之前的静电场，并使用放置在定位装置之后和打印区域之前的corotron调节静电场。 减少打印区域中的静电场可以减少由静电场引起的成像误差。
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公开(公告)号：US08840214B2
公开(公告)日：2014-09-23
申请号：US13431695
申请日：2012-03-27
IPC分类号： B41J29/38 , B41J29/393 , B41J2/01
CPC分类号： B41J11/0095 , B41J25/304
摘要： A substrate media height detector for a printing system having a print head including a media transport having a surface for moving a sheet of substrate media along a media path in a process direction. An elongate detection member includes a portion extending across the media path in a cross-process direction and is spaced from the media transport surface a predetermined distance. The detection member is movably attached to a support structure and is deflectable upon engagement with a sheet of substrate media. A deflection sensor senses the deflection of the detection member by the substrate media.
摘要翻译： 一种用于打印系统的基板介质高度检测器，其具有包括介质输送器的打印头，所述介质传送器具有用于沿着处理方向沿介质路径移动基板介质片的表面。 细长的检测构件包括在交叉处理方向上跨越介质路径延伸的部分，并且与介质输送表面间隔预定距离。 检测构件可移动地附接到支撑结构，并且在与基片介质接合时可偏转。 偏转传感器通过基板介质感测检测部件的偏转。
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公开(公告)号：US5138564A
公开(公告)日：1992-08-11
申请号：US560813
申请日：1990-07-31
申请人： Joannes N. M. de Jong , Barry Wolf
发明人： Joannes N. M. de Jong , Barry Wolf
CPC分类号： H03M1/1047 , G01D18/002 , G01P21/02 , H03M1/308
摘要： A method and apparatus provides on-line calibration of low cost encoders by interfacing an encoder with a microprocessor and driving a shaft to which the encoder is attached at a slow constant speed and at a fast constant speed. Data is collected by the microprocessor for the slow and fast speeds and a mathematical analysis is performed which determines the torque disturbances occurring at each point in the rotational cycle of the shaft and which further determines the actual location of each encoder line on the encoder in the rotational cycle of the shaft. By knowing the actual location of each encoder line and the number of counts between encoder lines for a given speed, a high accuracy encoder can be realized at a minimal cost.
摘要翻译： 一种方法和装置通过将编码器与微处理器接口并且以慢速恒定的速度和以恒定的速度驱动编码器附接的轴来提供低成本编码器的在线校准。 数据由微处理器收集用于缓慢和快速的速度，并且执行数学分析，其确定在轴的旋转周期中的每个点处发生的扭矩扰动，并进一步确定编码器中每个编码器线的实际位置 轴的旋转周期。 通过知道每个编码器线的实际位置和给定速度下编码器线之间的计数，可以以最小的成本实现高精度编码器。
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