Quality Testing And Control Technology Of Digital Printing

On the basis of analyzing ink-jet printing technology we found researching the method of ink-jet printing quality testing and control is necessary. For the purpose of finding how the factors effect the printing quality and how to control the factors.We got experimental data by image analysis to evaluate ink-jet printing quality. We evaluated dot fidelity by dot roundness, dot area and roughness. Dot fidelity theory was studied.We analyzed paper performance parameters (brightness, smoothness, opacity and absorbent) and dot fidelity; We applied analytical grey incidence to confirm the relationship between paper performance parameters and dot fidelity; Combining printing proof and quality analysis we developed the method quality testing and control technology of digital printing on paper.Analytical grey incidence was applied to the advantage influencing factors analysis of inkjet paper's image printing quality. The results showed that the absorbent has significant influence on the dot quality. However, the influence of the smoothness on the dot quality is not very clear. Advantage order is absorbent, brightness, opacity, smoothness. We should know that advantage influencing factors obtained by analytical grey incidence have significant influence on the whole result. However we can't improve the final printing quality by improving one of these factors. We got that we can apply the method to the coating and printing quality's analysis. The method is good for improving digital printing quality.