公开(公告)号：US08145078B2

公开(公告)日：2012-03-27

申请号：US12390568

申请日：2009-02-23

Applicant: Lalit Keshav Mestha ,  Sohail A. Dianat ,  Bharathi Venkitaraman ,  Douglas Kreckel

Inventor： Lalit Keshav Mestha ,  Sohail A. Dianat ,  Bharathi Venkitaraman ,  Douglas Kreckel

IPC: G03G15/08 ,  G03G15/10

CPC classification number: G03G15/0849

Abstract: The present disclosure provides for an imaging machine having an imaging member including a method for maintaining a toner concentration. The method for maintaining the toner concentration comprises: determining a toner concentration (TC) measurement using a sensor; computing a state estimator output from the TC measurement and a pre-stored estimator gain matrix, Ke; computing an estimated target state from the state estimator and a pre-stored controller gain matrix, K; computing a duty cycle from the estimated target state, pixel count data, and pre-stored target decomposer output; and, updating the duty cycle by repeating the above method for the next TC cycle.

Abstract translation: 本公开提供了一种具有成像构件的成像机，其包括用于维持调色剂浓度的方法。 维持调色剂浓度的方法包括：使用传感器确定调色剂浓度（TC）测量; 计算来自TC测量的状态估计器输出和预先存储的估计器增益矩阵Ke; 从状态估计器计算估计的目标状态和预先存储的控制器增益矩阵K; 从估计的目标状态，像素计数数据和预存储的目标分解器输出计算占空比; 并且通过重复上述用于下一个TC循环的方法来更新占空比。

公开(公告)号：US08055166B2

公开(公告)日：2011-11-08

申请号：US12208078

申请日：2008-09-10

Applicant: Lalit Keshav Mestha ,  Palghat Ramesh ,  John G. Shaw ,  Dale R. Mashtare ,  Joel A. Kubby

Inventor： Lalit Keshav Mestha ,  Palghat Ramesh ,  John G. Shaw ,  Dale R. Mashtare ,  Joel A. Kubby

IPC: G03G15/08

CPC classification number: G03G15/0818 ,  G03G2215/00957 ,  G03G2215/0653 ,  G03G2215/1614

Abstract: Exemplary embodiments provide a roll member that includes one or more linear arrays of actuator cells and methods for making and using the roll member. In one embodiment, each linear array of the roll member can be controllably actuated as a group by, e.g., an oscillating voltage, to release toner particles adhered thereto and to form a uniform toner cloud in the development area between the roll member and an image receiving member. The controllable actuation can also aid in the unloading process of the residual toner particles from the roll member. In various embodiments, the uniform toner cloud and/or the controllable unloading process can enable a non-interactive development system for image-on-image full-color printing.

Abstract translation: 示例性实施例提供了包括一个或多个致动器单元的线性阵列的辊构件以及用于制造和使用辊构件的方法。 在一个实施例中，辊构件的每个线性阵列可以通过例如振荡电压作为一组进行可控地致动，以释放附着在其上的调色剂颗粒，并在辊构件和图像之间的显影区域中形成均匀的调色剂云 接收成员。 可控制的致动还可以帮助来自辊构件的剩余调色剂颗粒的卸载过程。 在各种实施例中，均匀调色剂云和/或可控卸载过程可以实现用于图像上全色打印的非交互式显影系统。

公开(公告)号：US08014033B2

公开(公告)日：2011-09-06

申请号：US11890888

申请日：2007-08-08

Applicant: Yao Rong Wang ,  Lalit Keshav Mestha ,  Zhigang Fan ,  Alvaro Enrique Gil

Inventor： Yao Rong Wang ,  Lalit Keshav Mestha ,  Zhigang Fan ,  Alvaro Enrique Gil

IPC: G06K15/00

CPC classification number: H04N1/6033 ,  H04N1/40006

Abstract: Disclosed is an image color management system and method for controlling an image output device. The method for controlling the image output device comprises generating an image output device profile LUT (look-up-table) characterizing the color profile of the image output device for a plurality of drift states associated with the image output device; generating a set of augmented basis vectors representing the LUT, L*a*b* values and multiple GCR/UCRs; storing the set of basis vectors in an image output device controller; and generating an image output device active profile associated with a current drift state of the image output device to convert image color data for display or printing by the image output device, wherein the image output device active profile is generated from the set of basis vectors.

Abstract translation: 公开了一种用于控制图像输出装置的图像颜色管理系统和方法。 用于控制图像输出装置的方法包括：生成表征与图像输出装置相关联的多个漂移状态的图像输出装置的颜色特征图像​​的图像输出装置简档LUT（查找表）; 生成表示LUT，L * a * b *值和多个GCR / UCR的增强基向量集合; 将所述一组基矢量存储在图像输出装置控制器中; 以及生成与所述图像输出设备的当前漂移状态相关联的图像输出设备活动轮廓，以转换由图像输出设备显示或打印的图像颜色数据，其中从所述一组基矢量生成所述图像输出设备活动简档。

公开(公告)号：US07911623B2

公开(公告)日：2011-03-22

申请号：US11890575

申请日：2007-08-07

Applicant: Pinyen Lin ,  Peter M. Gulvin ,  Yao Rong Wang ,  Lalit Keshav Mestha

Inventor： Pinyen Lin ,  Peter M. Gulvin ,  Yao Rong Wang ,  Lalit Keshav Mestha

IPC: G01B9/02

CPC classification number: G02B26/001 ,  G01J3/02 ,  G01J3/0256 ,  G01J3/26 ,  G01J3/2803 ,  G03G2215/00616

Abstract: Disclosed is a microelectromechanically tunable Fabry-Perot device and method of manufacturing tunable Fabry-Perot device and method of manufacturing. The F-P device comprises a first and second substrate which has partially reflective planar surfaces, and the partially reflective planar surfaces are separated by a predetermined separation distance and aligned to provide a F-P cavity, where one or more piezoelectric members are adapted to displace the first and second substrates when an electric field is applied.

Abstract translation: 公开了一种微机电可调法布里 - 珀罗器件和制造可调谐法布里 - 珀罗器件的方法和制造方法。 FP器件包括第一和第二衬底，其具有部分反射的平面表面，并且部分反射的平面表面被隔开预定的间隔距离并对齐以提供FP腔，其中一个或多个压电元件适于使第一和 施加电场时的第二基板。

公开(公告)号：US20110013206A1

公开(公告)日：2011-01-20

申请号：US12504332

申请日：2009-07-16

Applicant: Lalit Keshav Mestha ,  Yao Rong Wang ,  Alvaro Gil

Inventor： Lalit Keshav Mestha ,  Yao Rong Wang ,  Alvaro Gil

IPC: H04N1/60

CPC classification number: H04N1/60

Abstract: A methodology is disclosed to achieve adaptive illumination independent matching of spot colors. In one embodiment, the methodology includes an iterative process to determine a variety device specific recipes for spot colors across different illumination spectra, and then automatically choosing and/or recommending the optimal recipe that provides the lowest color dispersion across a variety of illuminants under consideration. This approach may be used with a variety of gamut mapping techniques. According to a further embodiment, the methodology may be used with a ray-based gamut mapping method.

Abstract translation: 公开了一种实现专色自适应照明独立匹配的方法。 在一个实施例中，该方法包括迭代过程以确定不同照明光谱上的专色的特定配方，然后自动选择和/或推荐在所考虑的各种发光体下提供最低色散的最佳配方。 该方法可以与各种色域映射技术一起使用。 根据另一实施例，该方法可以与基于射线的色域映射方法一起使用。

公开(公告)号：US07873309B2

公开(公告)日：2011-01-18

申请号：US12208103

申请日：2008-09-10

Applicant: Lalit Keshav Mestha ,  John G. Shaw ,  Palghat Ramesh ,  Allen Ted Retzlaff, Jr. ,  Peter Michael Gulvin

Inventor： Lalit Keshav Mestha ,  John G. Shaw ,  Palghat Ramesh ,  Allen Ted Retzlaff, Jr. ,  Peter Michael Gulvin

IPC: G03G15/08

CPC classification number: G03G15/0818 ,  G03G2215/00957 ,  G03G2215/0653 ,  G03G2215/1614

Abstract: Exemplary embodiments provide a digital development system and methods for making and using the system. Specifically, the digital development system can utilize a roll member that includes a plurality of actuator cells arranged in a 2-dimensional array with each actuator cell having an actuator membrane individually addressable to eject one or more toner particles adhered thereto. In addition, the digital development system can utilize an imager architecture that includes an addressing logic circuit connected to each cell to selectively control the ejection of the one or more toner particles onto an image receiving member that is closely spaced from each actuator membrane. The disclosed digital development system can be used for non-interactive development systems for image-on-image full-color printing similar to HSD (Hybrid Scavengeless Development) technology with the donor roll becoming a high quality silent imager.

Abstract translation: 示例性实施例提供了用于制造和使用该系统的数字开发系统和方法。 具体地，数字显影系统可以利用包括以二维阵列布置的多个致动器单元的滚动构件，每个致动器单元具有可独立寻址的致动器膜，以喷射粘附到其上的一个或多个调色剂颗粒。 此外，数字开发系统可以利用成像器架构，其包括连接到每个单元的寻址逻辑电路，以选择性地控制一个或多个调色剂颗粒到与每个致动器膜紧密间隔的图像接收构件上的喷射。 所公开的数字开发系统可以用于类似于HSD（混合扫描开发）技术的图像全彩打印的非交互式开发系统，其中捐赠者卷成为高质量的无声成像器。

公开(公告)号：US07847976B2

公开(公告)日：2010-12-07

申请号：US11961492

申请日：2007-12-20

Applicant: Stuart Alan Schweid ,  Lalit Keshav Mestha

Inventor： Stuart Alan Schweid ,  Lalit Keshav Mestha

IPC: G03F3/08 ,  H04N1/46

CPC classification number: H04N1/6033

Abstract: Disclosed is an image output device color management system. The color management system includes a 2 dimensional principle component analysis (PCA) compensation method for reducing the number of measurement required for re-profiling a device, such as a printer.

Abstract translation: 公开了一种图像输出设备颜色管理系统。 颜色管理系统包括用于减少诸如打印机的设备重新分析所需的测量次数的二维主成分分析（PCA）补偿方法。

公开(公告)号：US07684082B2

公开(公告)日：2010-03-23

申请号：US11737576

申请日：2007-04-19

Applicant: Lalit Keshav Mestha ,  Tonya L. Love ,  Dennis M. Diehl ,  Daniel A. Robbins

Inventor： Lalit Keshav Mestha ,  Tonya L. Love ,  Dennis M. Diehl ,  Daniel A. Robbins

IPC: G06F15/00

CPC classification number: G01J3/46 ,  G01J3/463 ,  H04N1/6033

Abstract: An algorithmic method is identified for compensating for thermochromaticity errors in insitu spectral color measurements of a color printing device. A difference is mapped between spectral measurements of a printed color generated by the color printing device measured at a first or hot temperature and at a second or cool ambient temperature where the mapping comprises a referenceable characteristic of the color printing device. The spectrophotometric measurement of a hot color is compared with colors obtained with thermochromaticity compensation matrix to assess if the measured color corresponds to the desired color which will result when cooled to ambient temperature.

Abstract translation: 识别用于补偿彩色印刷装置的本色谱色彩测量中的热色差误差的算法方法。 在由第一或热温度下测量的彩色打印装置产生的打印颜色的光谱测量值和第二或者较低的环境温度之间映射差异，其中映射包括彩色打印装置的可参考特性。 将热色的分光光度测量与用热色调补偿基质获得的颜色进行比较，以评估测量的颜色是否对应于当冷却至环境温度时将产生的所需颜色。

公开(公告)号：US20090296171A1

公开(公告)日：2009-12-03

申请号：US12428799

申请日：2009-04-23

Applicant: Lalit Keshav Mestha ,  Alvaro Enrique Gil

Inventor： Lalit Keshav Mestha ,  Alvaro Enrique Gil

IPC: H04N1/46

CPC classification number: H04N1/6019

Abstract: A method and system of color management for an image marking device. A sensor measures printed hardcopy colors. A first gain, computed by a linear controller based on a linear model, is scheduled for each color node of a sampled color space. For each node where a convergence error exceeds a threshold, a second gain is scheduled by a nonlinear controller. The second gain scheduling includes initializing operational parameters, and performing an iterative procedure. The iterative procedure includes computing gain matrices over a defined projection horizon, evaluating a cost function for each gain matrix, determining the cost function, scheduling a new gain based on selecting a gain matrix having the minimum value of the cost function, and computing new CMYK values based on the new gain. A multidimensional LUT based on the scheduled gain matrices is generated and stored in memory, and a hardcopy output image is generated based on the stored multidimensional LUT.

Abstract translation: 图像标记装置的颜色管理方法和系统。 传感器测量打印的硬拷贝颜色。 由线性控制器基于线性模型计算的第一增益被调度到采样色空间的每个颜色节点。 对于收敛误差超过阈值的每个节点，第二增益由非线性控制器调度。 第二增益调度包括初始化操作参数，以及执行迭代过程。 迭代过程包括在定义的投影水平上计算增益矩阵，评估每个增益矩阵的成本函数，确定成本函数，基于选择具有成本函数的最小值的增益矩阵来调度新增益，以及计算新的CMYK 基于新增益的价值。 基于调度增益矩阵的多维LUT被生成并存储在存储器中，并且基于存储的多维LUT生成硬拷贝输出图像。

公开(公告)号：US20090296159A1

公开(公告)日：2009-12-03

申请号：US12390748

申请日：2009-02-23

Applicant: Lalit Keshav Mestha ,  Martin S. Maltz

Inventor： Lalit Keshav Mestha ,  Martin S. Maltz

IPC: H04N1/407 ,  H04N1/60

CPC classification number: H04N1/6022 ,  H04N1/603

Abstract: A computerized system, method, and software apparatus is presented which reduces the black level of the printing process in order to substantially remove stray black dots from the finished product of a printing output. Black levels are reduced by updating the print engine regions for the colors W, C, M, Y, MY, CM, CY, and neutral and by assigning a weights each color. The values are used to compute CMKY values. These values are then placed in a gain matrix and stored in a computer memory.

Abstract translation: 提出了一种计算机化系统，方法和软件设备，其减少了印刷过程的黑色水平，以便从打印输出的成品中基本上去除杂散黑点。 通过更新颜色W，C，M，Y，MY，CM，CY和中性的打印引擎区域，并通过为每种颜色分配权重来减少黑色等级。 这些值用于计算CMKY值。 然后将这些值放置在增益矩阵中并存储在计算机存储器中。