新闻资讯

当前位置:首页 / 新闻资讯 /

彩色印刷的彩色分色工艺特点介绍

彩色印刷是用彩色方式复制图像或文字的复制方式(与此相对应的是只有黑白的印刷方式,或称单色印刷)。它包括了许多步骤,或称转换过程,才能产生高质量的彩色复制品。

Color printing is a way of copying images or text in color. (correspondingly, it is only black and white printing, or monochrome printing). It involves many steps, or transformation processes, to produce high-quality color reproductions.

彩色分色工艺用于对原稿进行数字式扫描,将原稿分成红色、绿色和蓝色的成分。在数字式成像开发出来以前,彩色分色的传统方法是对图像照相3次,每次都用相对应颜色的滤色片过滤不同的光线。不过分色以后,所需的结果是3个灰色图像,其分别代表原稿的红色、绿色和蓝色的成份:下一步是转换每一色分色片。在生成红色成分的阴图图像时,生成的图像代表图像青的成分。同样,也生成绿色成份、蓝色成份的阴图片,以便相应地生成品红色和黄色的分色片。

The color separation process is used for digital scanning of the manuscript, and the manuscript is divided into red, green and blue components. Before the development of digital imaging, the traditional method of color color separation was to take 3 images of the image, and each time a different color filter was used to filter different light. But after the color separation, the result is 3 gray images, which represent the red, green, and blue components of the manuscript, and the next step is to convert each color. When generating the red component of the negative image, the generated image represents the green component of the image. In the same way, the green components and blue components of the negative images are also generated, so as to produce the finished red and yellow dichroic films accordingly.

QQ截图20170929174654.jpg

青、品红和黄色是减色法原色,因为每种颜色代表的是从白光中减去一种加色法原色所剩的两种加色法原色。青色、品红色和黄色是颜色复制中三种主要的颜料。在这三种颜色在印刷中组合在一起,可以对原稿进行合理的复制,但实际情况下并非如此。由于油墨颜料的限制,所产生的较暗的颜色比较脏,发污。为了解决这个问题,还要制作一张黑版,以改善暗部的颜色,提高图像的反差。已经有多种技术可以从原稿图像制作这块黑版;这些技术包括灰色成份替换、底色去除和底色增加。

Green, magenta and yellow are subtractive primary colors, because each color represents the two primary additive colors from a white light. Cyan, magenta and yellow are the three main pigments in color reproduction. When these three colors are combined in printing, they can reproduce the original manuscript reasonably, but in fact, this is not the case. Because of the limitation of ink pigment, the darker colors are dirty and dirty. In order to solve this problem, we need to create a black plate to improve the color of the dark part and enhance the contrast of the image. There are many technologies that can produce this black plate from the original image. These technologies include gray composition replacement, background removal and background color increase.

更多的关于济南印刷包装的问题或者详细的内容,请进入我们公司的网站:http://www.sdyszb.com 网站中会有很多的内容仅供参考。

More about Ji'nan's printing and packaging issues or detailed content, please enter our company's website: http://www.sdyszb.com website will have a lot of content for reference only.


 
QQ在线咨询
售前咨询热线
0531-87788878
售后咨询热线
15863799919