摘 要：纸作为印刷的主要原材料，它的性能如何，决定印刷墨色的质量。只有性能好的纸张，才能获得较好的印品呈色效果。所以，正确认识纸张性能与印品呈色的关系，根据印刷产品、工艺条件特点，合理选择纸张进行印刷，对提高产品质量具有重要的现实意义。
本课题研究纸张的表面性能与印刷品呈色范围的关系。检测了80g/胶版纸和108g/铜版纸的一些纸张性能，包括白度、平滑度、光泽度吸收性和吸收等参数，用彩色反射密度计测量了两种纸张印样各色实地块处的XYZ三刺激值，根据三色坐标的计算公式，计算得到x、y色度坐标，绘制了两种印样的色域图。实验结果表明，当印刷条件相同时，由于铜版纸具有较高的平滑度、白度、光泽度和较小的吸收性，其所能表现的呈色范围较大；而胶版纸的平滑度、白度、光泽度均低于铜版纸，吸收性较大，其所能表现的呈色范围较铜版纸小。本文实验结果对评价印刷用纸质量及提高印刷品的呈色范围具有一定的参考价值，在实际生产中可以作为指导生产的依据。
关键词：纸张性能 ；XYZ三刺激值；色度坐标；呈色范围
Abstract: As the main raw material for printing , paper`s performance is the key reason to the quality of printing ink .And only paper which has good performance can has better printing quality. So it is necessary to know the relationship between the paper`s performance and color effect .And we can be reasonable to select paper based on the product and printing technology. This is meaningful to improve the product quality.
This issue discusses the relationship between the paper`s performance and the color gamut..The samples of offset paper and chrome paper were chosen and measured ,including whiteness, smoothness gloss and absorbability. And the two samples were printed with the same printing machine. The tristimulus values (X,Y and Z) of solid areas were tested. Chromatic diagram were drawn after data analyzing and processing ,and then the influence of paper performance on gamut of color was analyzed. The result shows that greater color range occurred because of higher smoothness, gloss ,whiteness and lower absorbability to chromatic paper when the printing conditions were definite .
Key Words: Paper performance; XZY tristimulus values; chromatic coordinates；color range
