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    • 3. 发明授权
    • Inter-separation color image processing using error diffusion
    • 使用误差扩散进行分离间彩色图像处理
    • US5748785A
    • 1998-05-05
    • US720257
    • 1996-09-26
    • David A. MantellReiner Eschbach
    • David A. MantellReiner Eschbach
    • B41J2/525G03G15/01G06T1/00G06T5/00H04N1/405H04N1/46H04N1/52H04N1/60
    • H04N1/52
    • A method for processing an input image including a plurality of input pixels each having a first number of possible input levels of optical density to form an output image including a plurality of separations each including a plurality of output pixels each having a second number of possible output levels of optical density. The method includes the steps of generating a first threshold reference signal as a function of the output levels of optical density of a plurality of corresponding pixels each being selected from one of the plurality of separations, modifying a current one of the plurality of input pixels in a current one of the plurality of separations in accordance with an error signal derived by processing previous ones of pixels in the current one of the plurality of separations, generating a second threshold reference signal according to the output levels of optical density of previously processed pixels in the current one of the plurality of separations, and forming one of the output pixels by comparing the modified current one of the plurality of input pixels to the generated first threshold reference signal and the generated second threshold reference signal.
    • 一种用于处理包括多个输入像素的输入图像的方法,每个输入像素具有第一数量的可能的光密度输入电平,以形成包括多个分离的输出图像,每个分离包括多个输出像素,每个输出像素具有第二数量的可能的输出 光密度水平。 该方法包括以下步骤:产生作为多个对应像素的输出电平的函数的第一阈值参考信号,每个相应像素从多个分离中的一个分离中选择,修改多个输入像素中的当前一个输入像素 根据通过处理多个分离中的当前像素中的先前像素而导出的误差信号的多个分离中的当前一个分离,根据先前处理的像素的光密度的输出水平生成第二阈值参考信号 通过将多个输入像素中的修改的电流1与所生成的第一阈值参考信号和所生成的第二阈值参考信号进行比较来形成输出像素之一。
    • 7. 发明授权
    • Systems and methods for detecting print head defects in printing clear ink
    • 用于检测打印透明墨水中的打印头缺陷的系统和方法
    • US07690746B2
    • 2010-04-06
    • US12053206
    • 2008-03-21
    • David A. MantellJason O'NeilKenneth R. Ossman
    • David A. MantellJason O'NeilKenneth R. Ossman
    • B41J29/38
    • B41J29/02B41J2/2114B41J2/2142B41J29/393
    • A method for detecting a defect in an inkjet print head for printing a substantially clear ink includes including an ultraviolet or infrared sensitive material in the substantially clear ink, marking a test image on a substrate by jetting the substantially clear ink through one or more jets of the inkjet print head to be evaluated, exposing the test image to activating radiation having a wavelength to which the included ultraviolet or infrared sensitive material responds. During or following the exposing, the test image is evaluated with an image sensor, and whether the inkjet print head or any one of the one or more jets thereof being evaluated is defective is then determined based on the evaluation. A system for the method is also set forth.
    • 用于检测喷墨打印头中用于打印基本透明墨水的缺陷的方法包括在基本透明的墨水中包括紫外线或红外线敏感材料,通过一个或多个射流喷射基本上透明的墨水, 要评估的喷墨打印头,将测试图像暴露于具有所包含的紫外线或红外敏感材料响应的波长的激活辐射。 在曝光期间或之后,使用图像传感器评估测试图像,并且基于评估来确定喷墨打印头或其评估的一个或多个喷射中的任何一个是否有缺陷。 还阐述了该方法的系统。
    • 8. 发明授权
    • Method and system for printhead alignment to compensate for dimensional changes in a media web in an inkjet printer
    • 用于打印头对准的方法和系统,以补偿喷墨打印机中的介质网中的尺寸变化
    • US08292398B2
    • 2012-10-23
    • US12780645
    • 2010-05-14
    • Howard A. MizesR. Enrique ViturroDavid A. MantellJeffrey J. Folkins
    • Howard A. MizesR. Enrique ViturroDavid A. MantellJeffrey J. Folkins
    • B41J29/393
    • B41J2/2132B41J2/17593B41J2/2146B41J29/393
    • A method enables a controller to align printheads in a printer. The method includes identifying a first cross-process position for each printhead in a plurality of printheads in a printer with reference to image data of a test pattern printed by the plurality of printheads on a media substrate, identifying a second cross-process position for each printhead in the plurality of printheads, calculating a printhead cross-process position error between the identified first cross-process position and the identified second cross-process position for each printhead, comparing a maximum printhead cross-process position error to a predetermined threshold, and operating a plurality of actuators with reference to the calculated printhead cross-process position errors to reposition the printheads in the plurality of printheads in response to the maximum printhead cross-process position error being equal to or less than the predetermined threshold.
    • 一种方法使控制器可以将打印头对准打印机。 该方法包括:参照由介质基板上的多个打印头印刷的测试图案的图像数据,识别打印机中多个打印头中的每个打印头的第一交叉处理位置,识别每个打印头的第二交叉处理位置 打印头在多个打印头中计算每个打印头的识别的第一交叉处理位置和所识别的第二交叉处理位置之间的打印头交叉过程位置误差,将最大打印头交叉过程位置误差与预定阈值进行比较,以及 响应于最大打印头交叉处理位置误差等于或小于预定阈值,参考所计算的打印头交叉处理位置误差来操作多个致动器,以重新定位多个打印头中的打印头。
    • 9. 发明授权
    • Method for achieving uniform media temperature and size throughout the pre-heat zone
    • 在整个预热区域内实现均匀的介质温度和尺寸的方法
    • US08162469B2
    • 2012-04-24
    • US12561413
    • 2009-09-17
    • Jennifer Joyce ReaJason Matthew LeFevreRoger G. LeightonDavid A. Mantell
    • Jennifer Joyce ReaJason Matthew LeFevreRoger G. LeightonDavid A. Mantell
    • B41J2/01
    • B41J2/155B41J11/002
    • An imaging device includes a source of a substantially continuous web of media, and a web transport system configured to transport the continuous web from the source along a web path having a print zone. At least one printhead arranged along the web path in the print zone and configured to deposit ink onto the web to form images. A preheating system is positioned along the web path between the source and the print zone. The preheating system includes a first heating stage and a second heating stage. The first heating stage has at least one heater configured to heat the web to an initial preheat temperature prior to reaching the second stage. The second stage includes at least one heater configured to reduce a temperature of the web from the initial preheat temperature to a target temperature for the preheating system.
    • 成像设备包括基本上连续的介质幅材源,以及纸张传送系统,其被配置为沿着具有打印区域的卷筒纸路径从所述源传送所述连续卷材。 至少一个打印头沿打印区域中的纸幅路径布置并且被配置为将油墨沉积到纸幅上以形成图像。 预热系统沿着源和打印区之间的纸幅路径定位。 预热系统包括第一加热阶段和第二加热阶段。 第一加热台具有至少一个加热器,其构造成在达到第二阶段之前将幅材加热到初始预热温度。 第二阶段包括至少一个加热器,该加热器被配置为将卷材的温度从初始预热温度降低到预热系统的目标温度。
    • 10. 发明申请
    • Method And System For Printhead Alignment To Compensate For Dimensional Changes In A Media Web In An Inkjet Printer
    • 用于打印头对准的方法和系统以补偿喷墨打印机中的介质网中的尺寸变化
    • US20110279513A1
    • 2011-11-17
    • US12780645
    • 2010-05-14
    • Howard A. MizesR. Enrique ViturroDavid A. MantellJeffrey J. Folkins
    • Howard A. MizesR. Enrique ViturroDavid A. MantellJeffrey J. Folkins
    • B41J29/393
    • B41J2/2132B41J2/17593B41J2/2146B41J29/393
    • A method enables a controller to align printheads in a printer. The method includes identifying a first cross-process position for each printhead in a plurality of printheads in a printer with reference to image data of a test pattern printed by the plurality of printheads on a media substrate, identifying a second cross-process position for each printhead in the plurality of printheads, calculating a printhead cross-process position error between the identified first cross-process position and the identified second cross-process position for each printhead, comparing a maximum printhead cross-process position error to a predetermined threshold, and operating a plurality of actuators with reference to the calculated printhead cross-process position errors to reposition the printheads in the plurality of printheads in response to the maximum printhead cross-process position error being equal to or less than the predetermined threshold.
    • 一种方法使控制器可以将打印头对准打印机。 该方法包括:参考由介质基板上的多个打印头印刷的测试图案的图像数据,识别打印机中的多个打印头中的每个打印头的第一交叉处理位置,识别每个打印头的第二交叉处理位置 打印头在多个打印头中计算每个打印头的识别的第一交叉处理位置和所识别的第二交叉处理位置之间的打印头交叉过程位置误差,将最大打印头交叉过程位置误差与预定阈值进行比较,以及 响应于最大打印头交叉处理位置误差等于或小于预定阈值,参考所计算的打印头交叉处理位置误差来操作多个致动器,以重新定位多个打印头中的打印头。