彩色柔性版印刷色彩阶调再现性  

Tones and Color Reproduction of Color Flexography

作　　者：黄蓓青[1] 金杨[1] 王德本[1] 邓普君[1] 梁炯[1] 魏先福[1] 

机构地区：[1]北京印刷学院,北京102600

出　　处：《包装工程》2006年第6期9-11,共3页Packaging Engineering

摘　　要：为提高彩色柔性版印刷的色彩阶调再现性，研究了柔性版印刷网点扩大特性、阶调再现特性和色彩再现特性，并对网纹辊线数与印版网点线数的关系进行了研究。在相同的印刷条件下，通过柔性版印刷机进行印刷实验，建立了柔性版印刷profile文件，从而得到柔性版印刷网点扩大曲线、阶调再现曲线和色彩再现特性。同时，采用不同线数的网纹辊对不同网点线数的印版进行印刷，测量了印刷品的阶调再现曲线和网点扩大曲线。实验结果表明：柔性版印刷网点扩大较大，且在亮调到中间调范固（网点百分比为30％～40％）处的网点扩大最严重，从而使得柔性版印刷的阶调再现范围较窄。网纹辊线数与印版网点线数的比值越大，所得到的印刷品阶调再现性越好，其比值应大于3～4。泰洼版印刷的色域在红绿色范围内较胶印小，而在蓝色范围内较肢印大。为提高彩色柔性版印刷的质量，应利用profile文件对图象进行分色制版。In order to improve the color tones reproduction of multi-color flexographic printing, the characters of dot gain, tones reproduction and color repreduction in flexographic printing was studied. The relations between lines of anilox roller and lines of dots on the plate were determined. Under the same printing conditions, the printing experiment was made using flexographie press and the profile document of flexography was produced, then the curves of dot gain, tones reproduction in flexography and the characters of color reproduction were established. The results showed that flexography has larger dot gain and the range from high light to medium tone （dots percentage 30%～40%） is the worst, result in the narrow scope of tones reproduction in flexography. The larger the ratios of lines of anilox roller and lines of dots, the better the reproduction of tones become. This ratio should more than 3～4. The color gamut of flexography is wider in red and green area but smaller in blue area than lithography. So with the purpose of improving the quality of flexography, profile document should be used to do the color separation process.

关 键 词：柔性版印刷 网点扩大特性 阶调再现特性 色彩再现特性 

分 类 号：TS873[轻工技术与工程]