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    • 8. 发明授权
    • Pitch to pitch online gray balance calibration
    • 在线灰度平衡校准的间距
    • US07483186B2
    • 2009-01-27
    • US11428489
    • 2006-07-03
    • R. Enrique ViturroLalit Keshav MesthaJoseph D. HancockTonya L. Love
    • R. Enrique ViturroLalit Keshav MesthaJoseph D. HancockTonya L. Love
    • H04N1/46H04N1/23G03F3/08
    • H04N1/46
    • A printer or other marking engine includes a marking material transfer device, such as a photoreceptor drum or belt, that includes a plurality of pitches. Each pitch receives an individual color of marking material and conveys the marking material to a substrate. The marking engine forms a desired image in a main image area of the substrate using marking material from one or more of the pitches, and produces a target patch pattern for each of the pitches in a margin area located outside the main image area. A measuring device such as a spectrophotometer is used to measure each target patch pattern, and based on the measured values, an individual color calibration is performed for each pitch for use in a subsequent marking operation. The color calibration may include generating or modifying a tone reproduction curve for each pitch based on the measured values. The margin area may be later trimmed off, thereby removing the portion of the substrate on which the target patch pattern is formed.
    • 打印机或其他标记引擎包括包括多个间距的标记材料传送装置,例如感光鼓或皮带。 每个音调接收标记材料的单独颜色,并将标记材料传送到基底。 标记引擎使用来自一个或多个间距的标记材料在基板的主图像区域中形成期望的图像,并且在位于主图像区域外部的边缘区域中产生用于每个间距的目标贴片图案。 使用诸如分光光度计的测量装置来测量每个目标贴片图案,并且基于测量值,对于每个间距执行单独的颜色校准以用于随后的标记操作。 颜色校准可以包括基于测量值产生或修改每个音高的色调再现曲线。 可以稍后修剪边缘区域,从而去除其上形成有目标贴片图案的基板的部分。
    • 9. 发明授权
    • Systems and methods for printing images outside a normal color gamut in image forming devices
    • 用于在图像形成装置中打印普通色域之外的图像的系统和方法
    • US08711429B2
    • 2014-04-29
    • US11099589
    • 2005-04-06
    • Lalit K. MesthaTonya L. LoveTa-Chen HsuPatricia J. Donaldson
    • Lalit K. MesthaTonya L. LoveTa-Chen HsuPatricia J. Donaldson
    • G03F3/08H04N1/60
    • H04N1/6058G03G13/01
    • A user of an image forming device selects from among a plurality of pre-stored color rendition dictionaries (CRDs) in order that a set of system process parameter setpoints associated with that CRD may be referenced to bias and/or skew an available color gamut in the direction of a particular nominally out-of-gamut color which the user wishes to produce in a color image output by the image forming device. A capability is included in a color image forming device store and/or update multiple sets of special process parameter setpoints defining a plurality of CRDs each of which may be identified and associated with a specific color in order that requests to print out-of-gamut colors may be satisfied routinely as exceptions to a nominal gamut based on a nominal set of stored setpoints when a CRD is selected and the setpoints associated with that CRD are input for reference by the color image forming device on a temporary basis.
    • 图像形成装置的用户从多个预先存储的色彩再现字典(CRD)中进行选择,以便可以参考与该CRD相关联的一组系统处理参数设定点来偏置和/或偏斜可用色域 在图像形成装置输出的彩色图像中,用户希望产生的特定名义上的色域外颜色的方向。 彩色图像形成装置中包括能力存储和/或更新定义多个CRD的多组特殊过程参数设定点,每个CRD可以被识别并与特定颜色相关联,以便请求打印出色域 当选择CRD并且与该CRD相关联的设定点被输入以供彩色图像形成装置临时参考时,可以常规地将颜色作为基于标称集合存储的设定值的标称色域的异常来满足。