Evaluation Of Color Ink-Jet Printing Paper Quality Based On Multi-Layer Gray Comprehensive Assessment

Seven kinds of low-gloss ink-jet printing paper,eight kinds of middle-gloss ink-jet printing paper and seven kinds of high-gloss ink-jet printing paper are studied in this paper. Densimeter,spectrophotometer and micro-shooting instrument are used for testing tone reproduction,gamut, color density,color difference, line, dot, text and bleed of printing image.Subjective evaluation of the printing image is also done. A multilevel grey evaluation model is basis for calculating the correlation of low-gloss ink-jet printing papers, middle-gloss ink-jet printing papers and high-gloss ink-jet printing papers.Thereby the comprehensive evaluation system of glossy ink-jet paper’s printing quality is established.The analysis of advantage factor to the glossy ink-jet paper’s printing performance is preceded by gray technology.The relationship among several factors can be distinguished according to the correlation matrix.The result shows that senzhi paper’s correlation is the highest which means its comprehensive printing quality is the best of low-gloss ink-jet printing papers.Yet the yuqingting paper’s integrated printing quality is the worst of low-gloss ink-jet printing papers. Keda paper’s correlation is the highest which means its comprehensive printing quality is the best of middle-gloss ink-jet printing papers.Yet the EPSON3paper’s integrated printing quality is the worst of middle-gloss ink-jet printing papers. FANTAC paper’s correlation is the highest which means its comprehensive printing quality is the best of high-gloss ink-jet printing papers. Yet the meidiya paper’s integrated printing quality is the worst of high-gloss ink-jet printing papers.By analyzing the correlation matrix of low-gloss ink-jet printing papers, the whiteness of paper has a very significant impact to the tone reproduction, color difference and gamut of the printing image,the roughness of paper has a very significant impact to roundness of the printing image. On the contrast,the opacity of paper has obvious effect to the tone reproduction and color difference of the printing image. By analyzing the correlation matrix of middle-gloss ink-jet printing papers,the roughness and whiteness and gloss and opacity of paper have a very significant impact to the color density and width and roundness of the printing image,the roughness of paper has a very significant impact to gamut of the printing image. On the contrast, the opacity of paper has obvious effect to the roundness and color difference of the printing image. By analyzing the correlation matrix of high-gloss ink-jet printing papers,the roughness and gloss and opacity of paper have a very significant impact to the color density and tone reproduction and gamut of the printing image,the roughness of paper has a very significant impact to gamut of the printing image. On the contrast, the opacity of paper has obvious effect to the width and color difference of the printing image. The synthetic evaluation system of glossy ink-jet paper’s printing quality based on entropy weighting method’s gray technology can make a numerical and scientific judgment without person’s subjective sense.It also has some reference for the establishment of ink-jet printing quality standards.Analysis of advantage factor based on entropy weighting method’s gray technology can distinguish the relationship between surface properties and printing performance of paper.lt is helpful to reveal the relationship between the external representation and internal structure or composition of the paper. The method can guide the production of paper more scientifically,particularly to the coating technology.