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    Process for minimizing toner usage in minimum area coverage patches and minimizing toner churning
    2.
    发明授权
    Process for minimizing toner usage in minimum area coverage patches and minimizing toner churning 失效
    使最小面积覆盖片中的碳粉使用量最小化并减少调色剂搅拌的方法

    公开(公告)号：US06871029B2

    公开(公告)日：2005-03-22

    申请号：US10425104

    申请日：2003-04-28

    申请人： Grace T. Brewington ,  Robert E. Grace

    发明人： Grace T. Brewington ,  Robert E. Grace

    IPC分类号： G03G15/01 ,  G03G15/08

    CPC分类号： G03G15/0121 ,  G03G15/0849 ,  G03G15/5041 ,  G03G2215/00042 ,  G03G2215/0119

    摘要： A method for minimizing toner usage in minimum area coverage patches in a color printer including: reviewing a print job including job images; performing a pixel count for each color plane on a sheet level of the print job; converting the pixel count to a percent area coverage per color plane; in feed-forward mode comparing the area coverage per color plane to a reference value; activating or inactivating a color station depending on the comparison of the area coverage per color plane to the reference value; and printing a MAC patch of variable size with the color station if the area coverage per color plane is substantially less than a reference value.

    摘要翻译： 一种用于使彩色打印机中最小区域覆盖补丁中的调色剂使用最小化的方法，包括：检查包括作业图像的打印作业; 对所述打印作业的纸张层上的每个颜色平面执行像素计数; 将像素数转换为每个颜色平面的百分比面积覆盖率; 在前馈模式中，将每个颜色平面的区域覆盖率与参考值进行比较; 根据每个颜色平面的区域覆盖率与参考值的比较来激活或停用色站; 以及如果每个颜色平面的区域覆盖率基本上小于参考值，则用彩色站打印可变大小的MAC贴片。

    Closed-loop developability control in a xerographic copier or printer
    6.
    发明授权
    Closed-loop developability control in a xerographic copier or printer 失效
    静电复印机或打印机中的闭环显影控制

    公开(公告)号：US5559579A

    公开(公告)日：1996-09-24

    申请号：US315018

    申请日：1994-09-29

    申请人： Mark A. Gwaltney ,  Robert E. Grace

    发明人： Mark A. Gwaltney ,  Robert E. Grace

    IPC分类号： G03G15/00 ,  G03G15/08 ,  G03G21/00

    CPC分类号： G03G15/0855 ,  G03G15/5041 ,  G03G15/556 ,  G03G2215/00042

    摘要： A developer control for enabling the use of developer and toner materials with widely varying At in high quality xerographic copying and printing. Pixel count data is combined with toner test patch reflectance data during a brief toner rundown to determine the rate of change of density per unit change in toner concentration. During toner rundown, dispensing of toner is suspended for a period of time for effecting toner concentration reduction by approximately 0.25%. The change in Toner Concentration (TC) is estimated using pixel counting. Additionally, toner test patches are created and the reflectance thereof is measured for determining the change in toner density. The estimated TC change and the change in toner density are processed using linear regression to find the average change in density sensor output for the estimated change in TC which is referred to as the rundown slope. The rundown slope is then compared to a target value. If it exceeds the target value by more than ? (a noise factor), the dispense setpoint is reduced by one unit. If the rundown slope is less than the target value by more than ?, the dispense point is increased by one unit. The noise factor, ? is attributable to errors in pixel count or reflectance sensor drift. According to the foregoing, the nominal control line and control band in TC-Tribo space is altered to produce a much wider usable At range.

    摘要翻译： 一种显影剂控制，可以在高质量的静电复印和印刷中使用广泛变化的显影剂和调色剂材料。 像素计数数据在短暂的调色剂破碎期间与调色剂测试贴片反射率数据组合，以确定调色剂浓度每单位变化的密度变化率。 在调色剂粉碎过程中，调色剂的分配暂停一段时间，以使调色剂浓度降低约0.25％。 调色剂浓度（TC）的变化使用像素计数进行估计。 此外，产生调色剂测试贴片并测量其反射率以确定调色剂浓度的变化。 使用线性回归来处理估计的TC变化和调色剂浓度的变化，以找出被称为下降斜率的TC的估计变化的密度传感器输出的平均变化。 然后将衰落斜率与目标值进行比较。 如果超过目标值超过？ （噪声因子），分配设定点减少一个单位。 如果破碎斜率小于目标值大于α，则分配点增加一个单位。 噪音因素？ 可归因于像素计数或反射率传感器漂移的误差。 根据上述，TC-Tribo空间中的标称控制线和控制带被改变以产生更广泛的可用At范围。

    Control of halftone and solid area image quality by way of a halftone discharge ratio
    8.
    发明授权
    Control of halftone and solid area image quality by way of a halftone discharge ratio 有权
    通过半色调放电比例控制半色调和实心图像质量

    公开(公告)号：US06321043B1

    公开(公告)日：2001-11-20

    申请号：US09735326

    申请日：2000-12-12

    申请人： Robert E. Grace

    发明人： Robert E. Grace

    IPC分类号： G03G1500

    CPC分类号： G03G15/5041 ,  G03G15/5037 ,  G03G2215/00042 ,  G03G2215/00054 ,  H04N1/4005

    摘要： In an electrostatic and development control in a printing apparatus, unwanted variation in dot size and shape may be stabilized and the DMA variability under halftone control may be decreased, by use of a novel halftone discharge ratio (HTDRmidtone) along with the conventional actuators of development potential, cleaning potential, and exposure level. A three-input, three-output MIMO control system may be constructed to deliver superior regulation of halftone and solid area image quality with use of control algorithms that are based on the halftone discharge ratio and with use of as few as two developed halftone test patches.

    摘要翻译： 在印刷装置的静电和显影控制中，点尺寸和形状的不期望的变化可以被稳定，并且可以通过使用新型的半色调放电比（HTDRmidtone）以及常规的发展致动器来减少半色调控制下的DMA变异性 潜力，清洁潜力和暴露程度。 可以构造三输入三输出MIMO控制系统，通过使用基于半色调放电比率的控制算法和使用少至两个显影的半色调测试片来提供半色调和实体区域图像质量的优越调节 。

    Adaptive feed forward compensation for time varying toner cohesivity
    9.
    发明授权
    Adaptive feed forward compensation for time varying toner cohesivity 失效
    适应性前馈补偿，适用于时变调色剂内聚力

    公开(公告)号：US5749023A

    公开(公告)日：1998-05-05

    申请号：US832927

    申请日：1997-04-04

    申请人： Robert E. Grace ,  Guru B. Raj ,  James M. Pacer

    发明人： Robert E. Grace ,  Guru B. Raj ,  James M. Pacer

    IPC分类号： G03G15/00 ,  G03G15/06 ,  G03G15/08 ,  H04N1/29 ,  G03G15/10

    CPC分类号： G03G15/065 ,  G03G15/0849 ,  G03G15/5041 ,  G03G15/556 ,  G03G2215/00037

    摘要： A method of compensating for toner cohesivity within a repository in a developer system by recording toner consumption rate and toner dispense rate over a given time within the developer system. A control responds to the toner consumption and dispense rates over the given time period to compute toner residence time in the repository and estimate a degree of toner cohesiveness. The control then projects an adjustment to the development voltage to suppress the effects of toner cohesivity.

    摘要翻译： 通过在显影剂系统内的给定时间记录调色剂消耗速率和调色剂分配速率来补偿显影剂系统中储存库内的调色剂内聚性的方法。 控制器响应于给定时间段内的调色剂消耗和分配速率以计算储存器中的调色剂停留时间并估计调色剂的内聚度。 然后控制器调整显影电压以抑制调色剂内聚性的影响。

    Image on image process color with two black development steps
    10.
    发明授权
    Image on image process color with two black development steps 失效
    图像处理颜色与两个黑色开发步骤

    公开(公告)号：US5613176A

    公开(公告)日：1997-03-18

    申请号：US618054

    申请日：1996-03-25

    申请人： Robert E. Grace

    发明人： Robert E. Grace

    IPC分类号： G03G15/01

    CPC分类号： G03G15/0126 ,  G03G15/0152 ,  G03G15/0163 ,  G03G2215/017 ,  G03G2215/0174

    摘要： A printing system using a recharge, expose and development image on image process color system is disclosed in which there is an optional extra black development step. The printing system may be a single pass system where all of the colors are developed in a single pass or a multi-pass system where each color is developed in a separate pass. The additional black development step results in optimal color quality with black toner being developed in a first and/or last sequence. Having more than one black development station allows low gloss and high gloss black toner to be applied to the same image, enabling the very desirable combination of low gloss text and high gloss pictorials on the same page.

    摘要翻译： 公开了一种在图像处理颜色系统上使用再充电，曝光和显影图像的打印系统，其中存在可选的额外的黑色显影步骤。 打印系统可以是单通道系统，其中所有的颜色都是以单程或多遍系统显影，其中每种颜色以单独的通过形式显影。 另外的黑色显影步骤在黑色调色剂在第一和/或最后一个顺序中产生最佳的颜色质量。 拥有多个黑色显影工位，可将低光泽和高光泽的黑色调色剂应用于同一图像，从而在同一页上实现了低光泽文字和高光泽图案的非常理想的组合。