Inkjet nozzle flushing mechanism
    2.
    发明授权
    Inkjet nozzle flushing mechanism 有权
    喷墨喷嘴冲洗机构

    公开(公告)号:US09061518B2

    公开(公告)日:2015-06-23

    申请号:US14524591

    申请日:2014-10-27

    IPC分类号: B41J2/165 B41J2/21

    摘要: A method is disclosed. The method includes receiving print job data, rasterizing the print job data to generate image data for each page of the print job data to be printed, calculating a coverage per unit area for two or more color planes of each page of the image data and calculating a flushing mask to flush nozzles of the inkjet print head.

    摘要翻译: 公开了一种方法。 该方法包括接收打印作业数据,光栅化打印作业数据以生成要打印的打印作业数据的每一页的图像数据,计算图像数据的每一页的两个或更多个彩色平面的每单位面积的覆盖范围并计算 用于冲洗喷墨打印头的喷嘴的冲洗面罩。

    Hybrid halftone generation mechanism using change in pixel error
    3.
    发明授权
    Hybrid halftone generation mechanism using change in pixel error 有权
    混合半色调产生机制使用像素误差的变化

    公开(公告)号:US08922834B2

    公开(公告)日:2014-12-30

    申请号:US13440820

    申请日:2012-04-05

    CPC分类号: H04N1/4053

    摘要: A method is disclosed. The method includes generating a Continuous Tone Image (CTI) with all pixel values same as a first gray level, generating an initial Half Tone Image (HTI) with all pixel values equal to minimum absorptance level and computing a change in pixel error for a first pixel. The change in pixel error is computed by identifying a first pixel indicated in a valid pixel map, toggling the first pixel with all the possible output states and swapping the first pixel with all neighbor pixels only if the stacking constraint is satisfied, updating the HTI with the maximum error decrease operation and continue to next pixel location till the end criteria is met.

    摘要翻译: 公开了一种方法。 该方法包括产生具有与第一灰度级相同的所有像素值的连续色调图像(CTI),产生具有等于最小吸收水平的所有像素值的初始半色调图像(HTI),并计算第一像素值的像素误差的变化 像素。 通过识别有效像素图中指示的第一像素来计算像素误差的变化,如果满足堆叠约束,则仅切换具有所有可能输出状态的第一像素并且将第一像素与所有相邻像素交换,用H 最大误差减小操作,并继续到下一个像素位置,直到满足结束标准。

    Correction of print engine artifacts using an iterative halftoning search algorithm
    5.
    发明授权
    Correction of print engine artifacts using an iterative halftoning search algorithm 有权
    使用迭代半色调搜索算法校正打印引擎伪影

    公开(公告)号:US08282182B2

    公开(公告)日:2012-10-09

    申请号:US12546445

    申请日:2009-08-24

    IPC分类号: B41J2/205 G06K15/00

    摘要: Methods and systems herein provide for reducing artifacts during printing. One printing system is operable to prepare a continuous tone image (CTI) for printing onto a print medium by generating an initial half tone image (HTI) based on the CTI. The printing system includes a printer and a print controller. The print controller filters the initial HTI and the CTI with a perceptual filter and determines an error between the filtered CTI and the filtered HTI. The print controller prints the HTI via the printer to determine printer artifacts and processes a scanned version of the printed HTI to determine an error between the filtered CTI and the scanned and filtered HTI. This processing updates the initial HTI and reduces the error between the filtered CTI and the filtered HTI.

    摘要翻译: 本文的方法和系统提供了在打印期间减少伪影。 一个打印系统可操作以通过基于CTI生成初始半色调图像(HTI)来准备用于打印到打印介质上的连续色调图像(CTI)。 打印系统包括打印机和打印控制器。 打印控制器用感知过滤器对初始HTI和CTI进行过滤,并确定过滤后的CTI和经过过滤的HTI之间的错误。 打印控制器通过打印机打印HTI以确定打印机工件并处理打印的HTI的扫描版本,以确定过滤后的CTI与扫描和过滤的HTI之间的错误。 该处理更新初始HTI并减少过滤后的CTI与经过滤的HTI之间的误差。

    PRINTER CALIBRATION FOR PRINTERS WITH FIXED PRINT ARRAY STRUCTURES
    6.
    发明申请
    PRINTER CALIBRATION FOR PRINTERS WITH FIXED PRINT ARRAY STRUCTURES 有权
    具有固定打印阵列结构的打印机的打印机校准

    公开(公告)号:US20120050755A1

    公开(公告)日:2012-03-01

    申请号:US12868311

    申请日:2010-08-25

    IPC分类号: H04N1/60

    CPC分类号: H04N1/6033

    摘要: The systems and methods presented herein provide for calibrating a print engine of a printing system. The printing system prints image data on a print medium and scans the printed image data. Color values of the scanned image data are then measured and various tints of color values and their transition locations are identified. A calibration module estimates the original optical densities of the identified color value tints and generates a target optical density for each of the identified color value tints using the estimated original optical densities to determine print irregularities in the color values of the scanned image data. The calibration module then generates a halftone screen based on the mean optical densities and applies the generated halftone screen to the print engine to calibrate the print engine.

    摘要翻译: 本文提出的系统和方法用于校准打印系统的打印引擎。 打印系统在打印介质上打印图像数据并扫描打印的图像数据。 然后测量扫描图像数据的颜色值,并且识别颜色值及其转变位置的各种色调。 校准模块估计所识别的颜色值色调的原始光密度,并且使用估计的原始光密度来生成每个识别色值色调的目标光密度,以确定扫描图像数据的颜色值中的印刷不规则性。 校准模块然后基于平均光密度生成半色调屏幕,并将生成的半色调屏幕应用于打印引擎以校准打印引擎。

    AUTOMATIC PAPER MANAGEMENT AND COLOR PROFILE UTILIZATION
    7.
    发明申请
    AUTOMATIC PAPER MANAGEMENT AND COLOR PROFILE UTILIZATION 有权
    自动文件管理和颜色配置文件的使用

    公开(公告)号:US20110280589A1

    公开(公告)日:2011-11-17

    申请号:US12780526

    申请日:2010-05-14

    IPC分类号: G03G15/00

    摘要: Methods and systems herein provide for calibration of a production printing system that accommodates a plurality of different print paper types, including new paper types with no ICC profiles or optical density curves on file. One exemplary method includes printing test patches of primary colors on a first print medium, measuring colors of the test patches printed on the first print medium to determine an optical density of the first print medium, and comparing the optical density of the first print medium to a plurality of optical density curves to identify a comparable optical density curve of a different print medium. The comparable optical density curve is one of a plurality of optical density curves installed on the production printing system. The method further includes automatically selecting the comparable optical density curve to calibrate the production printing system to the different print medium for use in printing to the first print medium.

    摘要翻译: 这里的方法和系统提供了适应多种不同打印纸类型的生产打印系统的校准,包括没有ICC简档的新纸类型或文件上的光密度曲线。 一种示例性方法包括在第一打印介质上打印原色测试贴片,测量打印在第一打印介质上的测试贴片的颜色,以确定第一打印介质的光密度,并将第一打印介质的光密度与 多个光密度曲线以识别不同打印介质的可比较的光密度曲线。 可比较的光密度曲线是安装在生产打印系统上的多个光密度曲线之一。 该方法还包括自动选择可比较的光密度曲线以将生产打印系统校准到用于打印到第一打印介质的不同打印介质。

    High speed dual pass ink jet printer
    8.
    发明申请
    High speed dual pass ink jet printer 有权
    高速双通喷墨打印机

    公开(公告)号:US20100053245A1

    公开(公告)日:2010-03-04

    申请号:US12231578

    申请日:2008-09-02

    IPC分类号: B41J29/38

    CPC分类号: B41J2/2139

    摘要: A method is disclosed. The method includes performing a first print pass to print a first data point on a medium using a first set of ink jet nozzles and performing a second print pass to print the first data point on the medium with a second set of ink jet nozzles.

    摘要翻译: 公开了一种方法。 该方法包括执行第一打印通过,以使用第一组喷墨喷嘴在介质上打印第一数据点,并执行第二打印通过,以用第二组喷墨喷嘴在介质上打印第一数据点。

    Halftone screen generation mechanism
    9.
    发明授权
    Halftone screen generation mechanism 有权
    半色调屏幕生成机制

    公开(公告)号:US09036212B2

    公开(公告)日:2015-05-19

    申请号:US13345466

    申请日:2012-01-06

    IPC分类号: H04N1/405 H04N1/40 G06K15/00

    CPC分类号: H04N1/4051 H04N1/40087

    摘要: A method is disclosed. The method includes generating a Continuous Tone Image (CTI) with all pixel values same as the first gray level and an initial Half Tone Image (HTI) with all pixel values equal to minimum absorptance level, computing a change in pixel error by toggling with all the possible output states and swapping with all neighbor pixels only if the stacking constraint is satisfied, updating the HTI with the maximum error decrease operation and continue to next pixel location till the end criteria is met. Once the end criteria is met, the updated HTI is saved as a final halftone screen for that gray level and copied as the initial HTI for the next gray level along with CTI pixel values updated to the next gray level till the final gray value is reached.

    摘要翻译: 公开了一种方法。 该方法包括产生具有与第一灰度级相同的所有像素值的连续色调图像(CTI)和具有等于最小吸收水平的所有像素值的初始半色调图像(HTI),通过全部切换来计算像素误差的变化 可能的输出状态和所有相邻像素的交换只有在满足堆叠约束的情况下,用最大误差减少操作更新HTI并继续到下一个像素位置,直到满足结束标准。 一旦满足结束标准,更新的HTI被保存为该灰度级的最终半色调屏幕,并被复制为用于下一个灰度级的初始HTI,以及更新到下一个灰度级的CTI像素值,直到达到最终灰度值 。