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    • 2. 发明授权
    • Print proofing with color and screen matching
    • 打印打样与颜色和屏幕匹配
    • US07375857B1
    • 2008-05-20
    • US09667900
    • 2000-09-22
    • Adam I. PinardJames M. Enge
    • Adam I. PinardJames M. Enge
    • G06K15/00H04N1/40
    • H04N1/6033H04N1/52
    • A proof generation method is disclosed for proof printers. The method includes receiving halftoned primary color print data to be printed on a target halftone printing press. This halftoned primary color print data has been produced by a first halftoning technique, and is at least comparable to a target halftoning technique used by the target halftone printing press. A second, different halftoning technique is also applied to the print data. The two halftoning techniques are selected to cause a dot size in data provided to the proofing printer to more closely match a dot size for the halftone printing press, and cause a proof produced by the proofing printer to substantially match the color of a print produced by the target halftone printing press.
    • 公开了用于证明打印机的证明生成方法。 该方法包括接收要打印在目标半色调印刷机上的半色调原色印刷数据。 这种半色调原色印刷数据已经通过第一半色调技术产生,并且至少与目标半色调印刷机使用的目标半色调技术相当。 第二种不同的半色调技术也适用于打印数据。 选择两种半色调技术以使得提供给校样打印机的数据中的点大小更匹配于半色调印刷机的点大小,并且使由校样打印机产生的证明基本匹配由 目标半色调印刷机。
    • 6. 发明授权
    • Flat field and density correction in printing systems
    • 打印系统中的平场和密度校正
    • US08833899B2
    • 2014-09-16
    • US13537240
    • 2012-06-29
    • Samuel ChenMark C. RzadcaJames M. Enge
    • Samuel ChenMark C. RzadcaJames M. Enge
    • B41J29/393B41J2/21B41J2/045B41J2/155B41J11/00
    • B41J2/2146B41J2/04508B41J2/155B41J11/002B41J2202/21
    • A printing system includes at least one linehead that jets ink onto a print media and an integrated imaging system that captures images of the content printed on the print media. Each linehead includes one or more printheads. A flat field correction method for the printing system includes one or more printheads printing a test block having a known print density on the print media and producing a density variation trace for each of the one or more printheads by capturing an image of each printed test block and averaging pixel data in a transport direction. A negative print mask is then produced for each printhead in the one or more printheads by inverting each density variation trace. Each negative print mask is added to, or subtracted from, respective print data values transmitted to each respective printhead in the one or more printheads.
    • 打印系统包括将墨水喷射到打印介质上的至少一个线头和捕获打印在打印介质上的内容的图像的集成成像系统。 每个线头包括一个或多个打印头。 用于打印系统的平场校正方法包括一个或多个打印头,其在打印介质上打印具有已知打印浓度的测试块,并通过捕获每个打印测试块的图像来产生用于该一个或多个打印头中的每一个的浓度变化轨迹 并且在传送方向上平均像素数据。 然后通过反转每个浓度变化迹线,为一个或多个打印头中的每个打印头产生负打印面罩。 每个负打印掩模被添加到或从相应的打印数据值中减去,该值被传送到一个或多个打印头中的每个相应的打印头。
    • 9. 发明授权
    • Flat field and density correction in printing systems
    • 打印系统中的平场和密度校正
    • US08801136B2
    • 2014-08-12
    • US13537247
    • 2012-06-29
    • Samuel ChenMark C. RzadcaJames M. Enge
    • Samuel ChenMark C. RzadcaJames M. Enge
    • B41J2/205B41J29/393B41J2/155B41J2/045
    • B41J2/2056B41J2/04558B41J2/2146B41J2202/20B41J2202/21H04N1/407H04N1/4078
    • A density variation correction method for a printing system includes printheads in at least one linehead printing a test block pattern on a print media. A density variation trace is produced for each printed test block in the test block patterns by capturing an image of each test block and averaging pixel data in a transport direction. The density variation traces associated with a known print density represented in the test block pattern are compared with a respective reference density value. A determination is made as to whether there is a difference between each density variation trace and the respective reference density value. If there is a difference, the density variation trace is adjusted to match the reference density value. The method can be repeated for all of the known print densities represented in the test block pattern and for all of the lineheads in the printing system.
    • 用于打印系统的密度变化校正方法包括在打印介质上打印测试块图案的至少一个线头中的打印头。 通过捕获每个测试块的图像并在传输方向上对像素数据进行平均,为测试块图案中的每个印刷的测试块产生密度变化轨迹。 将与测试块图案中表示的已知印刷密度相关联的浓度变化迹线与相应的参考密度值进行比较。 确定每个浓度变化迹线和各个参考密度值之间是否存在差异。 如果存在差异,则调整浓度变化曲线以匹配参考密度值。 对于在测试块图案中表示的所有已知打印浓度以及打印系统中的所有线头,可以重复该方法。