喷墨打印墨点的保真度通常通过墨点的圆度、面积变化率及打印位置的准确度来衡量.研究了墨点的保真度分析原理,设计了基于图像分析法的打印质量显微图像分析系统.利用显微图像分析系统对HP、Canon和Epson喷墨打印机分别在三种涂布纸上打印墨点效果进行了分析.实验表明,该方法可用于涂布和印刷图像质量的评价. The fidelity of inkjet printing ink dot is usually measured by the roundness of ink dot, the rate of change of area and the accuracy of printing position. The fidelity analysis principle of ink dot is studied, and the print quality based on image analysis is designed The micro image analysis system was used to analyze the effect of ink dot printing on three kinds of coated paper by HP, Canon and Epson inkjet printers respectively.Experiments show that this method can be used for coating and printing image quality Evaluation.