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首页> 外文会议>TAPPI(Technical Association of the Pulp and Paper Industry) Coating and Graphic Arts Conference; 20070422-25; Miami,FL(US) >Evaluation of print-through with color theory
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Evaluation of print-through with color theory

机译：使用颜色理论评估直印

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摘要

The perceived color of an object depends on lightness, hue and saturation. Most optical standards of the paper industry ignore this, and they take into account only lightness. In practice this means that they are adequate only for analyzing black print and white paper. Recently it was found, that unlike standard definitions of opacity, a color difference model is able to predict perceived hiding power of a sheet of paper satisfactory regardless of the color of the paper or the print. The color difference model is also applicable for analyzing print-through. The method is not only able to predict how disturbingly print is seen from the reverse side of the sheet, but it is also possible to separate effect of the penetration of the ink or its components from the imperfect hiding power (opacity) of the sheet. In addition, at least for some printing methods it is possible to calculate a rough estimation for the penetration depth of the ink. In principle similar color difference method could be used for analyzing how well coating layer is covering the base paper, or in case of double coated papers, how well the topcoating is covering the precoating.
机译：物体的感知颜色取决于亮度，色相和饱和度。造纸行业的大多数光学标准都忽略了这一点，并且仅考虑了亮度。实际上，这意味着它们仅适用于分析黑白打印纸。最近发现，与不透明度的标准定义不同，色差模型能够预测令人满意的纸张感知遮盖力，而与纸张或印刷品的颜色无关。色差模型也可用于分析直印。该方法不仅能够预测如何从纸张的背面看到令人不安的打印，而且还可以将墨水或其成分的渗透效果与不完美的纸张遮盖力（不透明度）分开。另外，至少对于某些印刷方法，可以计算出墨水的渗透深度的粗略估计。原则上，可以使用类似的色差方法来分析涂层覆盖基纸的程度，或者在双涂层纸的情况下，分析面漆覆盖预涂层的程度。

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