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Digital Presses Color Uniformity

机译：数码印刷机颜色均匀度

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This study addressed the color uniformities of digital printing systems. It compared the color uniformities of 28 electrophotographic presses and 9 inkjet presses. The results in this report are coded to protect the identities of the participants. This study is the third in a series by this research team examining the color uniformity of digital presses. The first study, published in the 2013 TAGA Proceedings, examined the color uniformities of six electrophotographic presses compared to the uniformities of a lithographic press and an inkjet proofing device. The second study (2014 TAGA Proceedings) focused on the color uniformities of large solid areas for seven electrophotographic presses, again compared with an inkjet proofing device. A 12-page digital test form was designed for this study. The first page included 6 repeats of a 96-color target at different locations on the page. The remaining 11 pages were dominated by large checkerboard patterns providing significant coverage of a single color. Different colors were chosen for each of the pages. All 12 of the test form pages have a cyan, magenta, yellow, and black (CMYK) color bar imaged across the top of the page, as well as a continuous register track around the perimeter of the page. The analysis for this study included examination of the color bar to evaluate two things: The uniformity of the CMYK colors across the page. • The consistency of the color bar on the 12 pages of the form. The second phase of the analysis was to measure the color uniformity of the 11 checkerboard pages. These results shed light on the capacity of the digital presses to uniformly image large solid areas of color. The third phase of the analysis was to evaluate the color uniformity of the digital presses from the 96-patch color field. This involved reproducing a large number of colors (96) a limited number of times (6) widely spaced across an 11×l7-inch page. The final analysis made in this study was to make subjective comparisons between the register accuracy and the resolution of the digital presses based on photomicrographs taken of sections of the register grid and the Star Targets.
机译：这项研究解决了数字打印系统的颜色均匀性问题。它比较了28台电子照相印刷机和9台喷墨印刷机的颜色均匀性。该报告中的结果经过编码以保护参与者的身份。该研究是该研究小组研究数字印刷机颜色均匀性的系列文章中的第三篇。第一项研究发表在2013年的TAGA会议上，与平版印刷机和喷墨打样设备的均匀性相比，检查了六台电子照相印刷机的颜色均匀性。第二项研究（2014 TAGA会议录）着重于七台电子照相印刷机的大实心区域的颜色均匀性，再次与喷墨打样设备进行了比较。为此研究设计了一个12页的数字测试表格。第一页在页面的不同位置包含6个96色目标的重复。其余的11页以大型棋盘格图案为主，提供了相当大的单色覆盖范围。为每个页面选择了不同的颜色。所有12个测试表单页面的页面顶部都有青色，品红色，黄色和黑色（CMYK）彩条，并在页面周围形成连续的套准轨道。这项研究的分析包括检查色条以评估两件事：•页面上CMYK颜色的均匀性。 •表单12页上的颜色条的一致性。分析的第二阶段是测量11个棋盘格页面的颜色均匀性。这些结果揭示了数字印刷机对大型彩色实心区域进行均匀成像的能力。分析的第三阶段是从96色块色域评估数字印刷机的颜色均匀性。这涉及到在11×17英寸的页面上宽间隔的有限次数（6）再现大量颜色（96）。这项研究的最终分析是基于套准网格和Star Targets的显微照片，对套准精度和数字印刷机的分辨率进行主观比较。

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