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| 基于网点透射机理的印刷网线尺评价研究 |
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郭凌华1,2, 郭新华3, 谢雨林4, 胡吉龙1,2
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1. 陕西科技大学,西安 710021;2. 陕西省造纸技术及特种纸品开发重点实验室, 西安 710021;3.暨南大学,珠海 519070;4.北京北大方正电子有限公司, 北京 100085
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| 摘要: |
| 印刷行业目前还主要依靠经验进行印刷品加网线数和加网角度的识别。 根据莫尔条纹原理,通过设置合理的印刷加网线数、加网角度、激光照排机输出点数,设计了评价图像质量的印刷网线尺。 主要对前期设计的网线尺进行数学公式的推导,对印刷品加网线数和加网角度测试提供充分理论依据。 |
| 关键词: 印刷网线尺 余弦光栅 直光栅 莫尔条纹 |
| DOI： |
| 分类号:TS807 |
| 基金项目:陕西省教育厅省级重点实验室科研计划项目(11JS018);陕西科技大学科研启动基金项目(BJ13-01); 2012 国家级大学生创新创业训练计划项目(201210708001) |
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| Screen Scale Based on Dot Optical Transmission Mechanism |
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GUO Ling-hua1,2, GUO Xin-hua3, XIE Yu-lin4, HU Ji-long1,2
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1. Shaanxi University of Science and Technology, Xian 710021, China;2. Shaanxi Province Key Laboratories of Papermaking Technology and Special Paper Development, Xian 710021, China;3.Jinan University, Zhuhai 519070,China;4.Founder Technology Group Corp, Beijing 100085, China
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| Abstract: |
| At present, identification of screen line and angle is mainly depended on experience in printing industry. Screen scale for evaluation of print quality was designed through setting of suitable screen number, screen angle and output points of laser phototypesetter according to Moire fringe principle in earlier study. Mathematical formula for the screen scale was deduced. The purpose was to provide theoretical foundation for testing of screen number and screen angle of printing material. |
| Key words: screen scale cosine grating straight grating Moire fringe |
