数字印刷的质量检测与控制研究毕业论文

摘要

毕业设计（论文）

题 目数字印刷的质量检测与控制研究

I

摘 要

本课题是在如今数字印刷迅猛发展的大背景下，针对目前数字印刷纷繁复杂的质量检测步骤和手段做出一个归纳和整理，建立一个简单而实用的数字印刷质量评价体系,为企业指导生产。并为以后的研究打好基础。

研究方法主要是首先对数字印刷的工艺原理以及质量检测和控制方面做一个初步的论述，通过对以往文献资料进行参考和调查，结合传统胶印，对影响印刷品质量的各个因素进行分析，并收集出最重要的几个作为参数，设计测试版，利用数字印刷机打印出样张。数据测量的过程中采用客观测量和主观评价同时进行的方式，对得到的数据进行分析和归纳。最后得出结论。

通过实验可以了解实地密度的均匀性、网点扩大、相对反差、各级网点再现能力会对印刷品的层次造成影响。而灰平衡、油墨的色域范围以及叠印率会对印刷品颜色再现造成影响。所以只要在印刷过程中加以控制这些因素，就等于掌握了印刷品的层次再现性和颜色再现性，并且与人心理的主观评价相契合，就完全可以得到合乎要求的印刷品。

关键词：轻工技术，数字印刷，质量检测

目录

Abstract

Print quality must meet customers’ requirements, and reasonable quality evaluation should start from each step of the process(pre-press, printing,

post-printed),

analyze

and

evaluate

the

printed

material ,printability, printing processes and parameters, post-press processes and parameters, discover and understand the defects of quality, resolve the question by a right way to meet requirements. The research method is to make a discourse in principles of offset printing technology and quality testing. By researching the past literature reference and investigation, collect the various factors that affect print quality with combination of traditional offset printing. Using the objective measurement and the subjective evaluation method to test paper, ink, plate and image, then the data were collected and analyzed. Finally get the conclusion.

Through experiments people can understand the density uniformity, dot gain, relative contrast; tone reproduction curve will affect the level of print. The gray balance, ink color gamut will affect the printed color reproduction. So long as the control of these factors in the printing process, equal to master print color reproducibility and gradation reproducibility, to get high-quality prints.

KEY WORDS: printing technology; offset printing; quality testing

III

Abstract

目录

前言 ................................................. 1 1.概述 ............................................... 2 1.1研究的背景 ........................................................................... 2 1.2研究的目的和意义 ............................................................... 3 1.3此研究在国内外的发展及趋势 ........................................... 4 1.4研究的内容和方法 ............................................................... 6 2.理论分析 ........................................... 7 2.1喷墨数字印刷机工艺介绍 ................................................... 7 2.2密度测量 ............................................................................... 8 2.3数字印刷品的质量控制要素 ............................................... 9 2.3.1墨区均匀性 ............................................................... 10 2.3.2相对反差 ................................................................... 10 2.3.3 网点扩大 .................................................................. 11 2.3.4 各级网点再现能力 .................................................. 12 2.3.5 油墨显色性的评价 .................................................. 12 2.3.6 灰平衡 ...................................................................... 13 2.3.7叠印率 ....................................................................... 14 2.6.8表观特征 ................................................................... 15 3.实验 .............................................. 17 3.1实验设计 ............................................................................. 17 3.2主观评价部分的数据收集及分析 ..................................... 17 3.3客观测量部分的数据收集及分析 ..................................... 19 3.3.1实地密度的检测 ....................................................... 19 3.3.2相对反差的检测 ....................................................... 20 3.3.3网点扩大的检测 ....................................................... 21 3.3.4各级网点再现能力的检测 ....................................... 22 3.3.5油墨颜色质量的检测 ............................................... 25

目录

3.3.6 灰平衡的检测 .......................................................... 26 3.3.8 叠印率的检测 .......................................................... 27 结论 ................................................ 29 毕业设计小结 ........................................ 30 致谢 ................................................ 31 参考文献 ............................................ 32

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