基于CTP调幅加网工艺下不同纸张对网点扩大的影响研究  

Research on Dot Gain of Different Papers Based on AM Screening by CTP

作　　者：钟泽辉[1] 刘倩[1] 

机构地区：[1]湖南工业大学,株洲412008

出　　处：《包装工程》2010年第1期79-81,共3页Packaging Engineering

基　　金：湖南省科技厅资助科研项目(2008FJ3031);印刷工程国家特色专业(TS10433)

摘　　要：在采用CTP圆形网点调幅加网工艺条件下，研究铜版纸、胶版纸、新闻纸3种纸张对网点扩大的影响。通过测量灰梯尺色块的网点面积率，得到网点扩大数据并绘出网点面积率与网点扩大的关系曲线图，计算出各色版的网点扩大一元三次回归曲线。结果表明，3种纸张在网点面积率0～30％的位置网点扩大缓慢，70％～75％的位置出现增大峰值。Dot gain of coated art paper, offset paper and newsprint paper was studied under the condition of circle dot AM screening by CTP. The data of the dot gain were collected through measuring the area of each color square by densitometer. The relation curves between the areas of each color square and their dot gain were plotted and regression univariate cubic equation of dot gain of the three kinds of paper were calculated. The results showed that, when choosing the circle dot screening, the dot gain rate in dot area of 0%-30% is lower, and there is a peek of dot gain in the dot area of 70-75%.

关 键 词：计算机直接制版 调幅加网 网点扩大 纸张印刷适性 

分 类 号：TS801.3[轻工技术与工程] TS807