The fundamental of plane color model for dot image of clor printing was introduced. Color data L~* a~* b~* was transformed to CMY and the exactness was verified with data offered by FORGA and myself. Plane color model was established and verified.

• 介绍彩色印刷网点图像平面呈色模型的基本?热?用FORCA及笔者自测的数据；采用回归及曲线拟合算法；建立IT8.；7/3标准色谱中三色胶印色块的平面方程；列出具体的平面方程系数和曲线系数；并做了详细的误差分析；验证了平面模型的正确性；并对此呈色模型的进一步研究与应用前景做了初步探索。