3D网点制版参数与金属易拉罐网点扩大关系的研究  

Relationship between 3D Dot Plate Making Parameters and Dot Gain of Metal Cans

作　　者：肖颖[1] 麻祥才 金琳[1] 李贤峰 刘骏 王晓红[4] XIAO Ying;MA Xiang-cai;JIN Lin;LI Xian-feng;LIU Jun;WANG Xiao-hong(Shanghai Publishing and Printing College,Shanghai 200093,China;Shanghai T.C.Industrial Co.,Ltd.,Shanghai 201802,China;Hand Graphic Equipment Co.,Ltd.,Beijing 102600,China;University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海出版印刷高等专科学校,上海200093 [2]上海致彩实业有限公司,上海201802 [3]北京汉德图像设备有限公司,北京102600 [4]上海理工大学,上海200093

出　　处：《包装工程》2023年第5期203-210,共8页Packaging Engineering

基　　金：新闻出版署智能与绿色柔版印刷重点实验室和招标课题(KLIGFP-03,ZBKT202001);国家新闻出版署2019年度优秀重点实验室资助项目(Z6E-0404-20-01-01y)。

摘　　要：目的采用激光直接雕刻3D网点制版方式实现金属易拉罐网点扩大的控制。方法以铝质易拉罐为承印材料,改变3D网点的形状、戴帽、雕刻侧峰角度等参数后进行制版和印刷,对印品的网点扩大进行测量和分析,以确定最佳的制版参数。结果圆方形网点在50%中间调的表现优于圆形网点的,“戴帽”网点的还原效果优于“无戴帽”网点的,雕刻侧峰角度80°的网点比雕刻侧峰角度50°的网点扩大值小。结论在实际生产中,当加网线数和加网角度确定后,选择圆方形“戴帽”网点和较大雕刻侧峰角度有利于改善金属易拉罐的网点扩大。The work aims to realize the control on dot gain of metal cans by laser direct engraving 3D dot plate making.With aluminum can as the printing material,plate making and printing were carried out by changing the parameters such as the shape of 3D dot,capping and engraving side peak angle.The dot gain of printed products was measured and analyzed to determine the best plate making parameters.The performance of rounded square dot in the middle tone was better than that of round dot,and the reduction effect of"capped"dot was better than that of"un-capped"dot.The dot gain value of dot with engraving side peak angle of 80°was smaller than that of dot with engraving side peak angle of 50°.When the number of screening lines and screening angle are determined,it is suggested to select rounded square"capped"dots with large engraving side peak angle,which is conducive to improving the dot gain of metal cans in actual production.

关 键 词：激光直雕 3D网点 制版参数 网点扩大 

分 类 号：TS813[轻工技术与工程]