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    System and method for controlling the lower power bound for a raster output scanner in a color xerographic printer
    1.
    发明授权
    System and method for controlling the lower power bound for a raster output scanner in a color xerographic printer 失效
    用于控制彩色静电印刷机中光栅输出扫描仪的较低功率限制的系统和方法

    公开(公告)号：US07688340B2

    公开(公告)日：2010-03-30

    申请号：US10916301

    申请日：2004-08-11

    申请人： Patricia J. Donaldson ,  Mark A. Scheuer ,  Daniel W. MacDonald

    发明人： Patricia J. Donaldson ,  Mark A. Scheuer ,  Daniel W. MacDonald

    IPC分类号： B41J2/47 ,  B41J2/435 ,  G03G15/00 ,  G03G15/02

    CPC分类号： G06K15/1209

    摘要： A method and system for a color xerographic machine determines a lower bound for the ROS power levels so that color defects are not produced by light attenuation from one or more layers of toner particles on a latent image. The method computes a minimum ROS power level for the photoreceptor at its maximum and minimum charge levels. The minimum ROS power level is the level at which the discharge voltage does not drop beyond a maximum discharge voltage difference. The difference is related to a toner particle density that affects color reproduction. The minimum ROS power levels for the minimum and maximum photoreceptor charge levels are used to compute a functional relationship for minimum ROS power levels at other photoreceptor charge levels. Thereafter, the minimum ROS power level function may be used to compute minimum ROS power levels for other photoreceptor charge levels. The computed minimum ROS power levels may be used to control the power levels used during color reproduction performed by the machine.

    摘要翻译： 用于彩色静电复印机的方法和系统确定ROS功率电平的下限，使得颜色缺陷不是由潜像上的一层或多层调色剂颗粒的光衰减产生的。 该方法计算感光体在其最大和最小电荷水平下的最小ROS功率电平。 最小ROS功率电平是放电电压不会超过最大放电电压差的电平。 该差异与影响颜色再现的调色剂颗粒密度有关。 最小和最大光感受器电荷水平的最小ROS功率电平用于计算其他光感受器电荷水平下最小ROS功率电平的功能关系。 此后，可以使用最小ROS功率电平功能来计算其他光感受器电荷电平的最小ROS功率电平。 所计算的最小ROS功率电平可以用于控制在由机器执行的色彩再现期间使用的功率电平。

    System for controlling electrostatic voltmeters in a tri-level highlight color xerographic printer
    3.
    发明授权
    System for controlling electrostatic voltmeters in a tri-level highlight color xerographic printer 失效
    用于控制三级高亮彩色静电印刷机中的静电电压表的系统

    公开(公告)号：US5541721A

    公开(公告)日：1996-07-30

    申请号：US355745

    申请日：1994-12-14

    申请人： Mark A. Scheuer ,  Daniel W. MacDonald

    发明人： Mark A. Scheuer ,  Daniel W. MacDonald

    IPC分类号： G03G15/00 ,  G03G15/01 ,  G03G21/00

    CPC分类号： G03G15/5037 ,  G03G15/5041 ,  G03G2215/017

    摘要： In a xerographic printer for tri-level highlight color imaging, two electrostatic voltmeters (ESVs) are used to interpolate the electrostatic potential at a particular location along the path of the photoreceptor belt. Anomalous ESV readings, such as would be caused by dirt interfering with the ESV itself as opposed to systemic changes in the whole apparatus, are detected by having the printer enter a "test mode" in which test patches having minimal charge are monitored by the ESVs. The low-charge test patches enable noise related directly to the ESVs to be isolated from other possible sources of noise. The noise which results from ESV malfunctioning is compensated for when the printer returns to operation.

    摘要翻译： 在用于三级高亮度彩色成像的静电印刷机中，使用两个静电电压表（ESV）来沿着感光带的路径在特定位置处插入静电电位。 通过使打印机进入“测试模式”来检测异常的ESV读数，例如由于污染物与ESV本身的干扰而与整个设备的系统变化相反，ESV中的ESV检测具有最小电荷的测试贴片 。 低电荷测试贴片可使与ESV直接相关的噪声与其他可能的噪声源隔离。 当打印机返回到操作时，会补偿由ESV故障引起的噪音。

    ESV readings of toner test patches for adjusting IRD readings of developed test patches
    8.
    发明授权
    ESV readings of toner test patches for adjusting IRD readings of developed test patches 失效
    用于调整发展中测试表的IRD读数的调色板测试表的ESV读数

    公开(公告)号：US5227270A

    公开(公告)日：1993-07-13

    申请号：US755234

    申请日：1991-09-05

    申请人： Mark A. Scheuer ,  Daniel W. MacDonald

    发明人： Mark A. Scheuer ,  Daniel W. MacDonald

    IPC分类号： G01N21/35 ,  G01N21/47 ,  G01R29/12 ,  G03G15/00 ,  G03G15/01 ,  G03G15/08 ,  H04N1/00

    CPC分类号： G03G15/5041 ,  G03G15/01 ,  G03G2215/00042

    摘要： In a single pass tri-level imaging apparatus, a pair of Electrostatic Voltmeters (ESV) are utilized to monitor various control patch voltages to allow for feedback control of Infra-Red Densitometer (IRD) readings.The ESV readings are used to adjust the IRD readings of each toner patch. For the black toner patch, readings of an ESV positioned between two developer housing structures are used to monitor the patch voltage. If the voltage is above target (high development field) the IRD reading is increased by an amount proportional to the voltage error. For the color toner patch, readings using an ESV positioned upstream of the developer housing structures and the dark decay projection to the color housing are used to make a similar correction to the color toner patch IRD readings (but opposite in sign because, for color, a lower voltage results in a higher development field).

    Toner concentration control for an imaging system
    10.
    发明授权
    Toner concentration control for an imaging system 有权
    成像系统的调色剂浓度控制

    公开(公告)号：US06175698B1

    公开(公告)日：2001-01-16

    申请号：US09428615

    申请日：1999-10-27

    申请人： Mark A. Scheuer ,  John Buranicz ,  Patricia J. Donaldson ,  Paul A. Garsin ,  Eric M. Gross ,  Eric S. Hamby ,  Daniel W. MacDonald ,  Prasad Padmanabhan ,  Edward W. Smith, Jr. ,  Joseph W. Ward

    发明人： Mark A. Scheuer ,  John Buranicz ,  Patricia J. Donaldson ,  Paul A. Garsin ,  Eric M. Gross ,  Eric S. Hamby ,  Daniel W. MacDonald ,  Prasad Padmanabhan ,  Edward W. Smith, Jr. ,  Joseph W. Ward

    IPC分类号： G03G1508

    CPC分类号： G03G15/0849 ,  G03G15/0853 ,  G03G2215/017

    摘要： The present invention generally relates to an imaging system, and more specifically, a method and apparatus for accurately predicting toner usage and hence toner dispensing requirements in an imaging system. The toner concentration control system maintains toner concentration in a developer structure, which is connected to a dispenser containing toner. The toner concentration control system includes a toner mass estimator providing a toner mass estimate of the toner mass in the developer structure to be applied to the photoreceptor; a feed forward dispense unit receiving the toner mass estimate and transmitting a feed forward dispense command based on the toner mass estimate; a toner concentration target adjusted by toner age, toner break-in and temperature in the developer structure; a feed back dispense unit receiving the adjusted toner concentration target and transmitting a feedback dispense command; and a total dispense unit receiving the feed forward dispense command and the feedback dispense command, and outputting total dispense command to the dispenser, which dispenses the toner to the developer structure in accordance with the total dispense command.

    摘要翻译： 本发明一般涉及一种成像系统，更具体地说，涉及用于准确地预测成像系统中的调色剂使用情况以及因此调色剂分配需求的方法和装置。 调色剂浓度控制系统保持显影剂结构中的调色剂浓度，其连接到包含调色剂的分配器。 调色剂浓度控制系统包括调色剂质量估计器，其提供将要施加到感光体的显影剂结构中的调色剂质量的调色剂质量估计; 接收调色剂质量估计的前馈分配单元和基于调色剂质量估计传送前馈分配命令; 通过调色剂老化，调色剂破碎和显影剂结构中的温度调节的调色剂浓度目标; 接收经调节的调色剂浓度目标并发送反馈分配命令的反馈分配单元; 以及总分配单元，其接收前馈分配指令和反馈分配命令，并且将总分配命令输出到分配器，分配器根据总分配命令将调色剂分配给显影剂结构。