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印刷品的工序
作者:admin 来源:本站 发布时间:2018-11-2 10:12:07 浏览次数:350
许多老板反映现在印刷职业是一个比一个难做,也是优胜劣汰的职业,要做个好的印刷品是有许多工序的,要是有哪部工序出了问题,后边就会影响到印刷品的质量,印刷分为印前、印刷、印后。
Many bosses reflect that the printing profession is now more difficult to do, but also the survival of the fittest. There are many processes to make a good print. If there are any problems in the process, the quality of the printed matter will be affected. Printing is divided into pre-press, post-press and post-press.
印刷一般提到四色印刷这个概念,是因为印刷品中的颜色都是由CYMK四种颜色所构成的。一般我们所接触的印刷品,是按照四色叠印而成的。

Printing generally refers to the concept of four-color printing, because the color of printed matter is composed of four CYMK colors. In general, the printed matter we touch is made of four colors.

印前原稿质量和用色水平是限制印刷质量的重要要素。在五颜六色原稿的选用和用色、配色上,是否满足制版印刷要求,已成为影响整体印刷质量的首要要素。特别是相片,忽视印刷制版要求,直接影响印刷整体质量。图像是画龙点睛之笔,颜色鲜艳、层次丰盛、清楚逼真的图片,给读者以美的享受。
The quality and color level of the original manuscript are the important factors limiting the quality of printing. Whether the selection and color matching of colorful manuscripts meet the requirements of plate-making and printing has become the primary factor affecting the overall printing quality. In particular, photographs, ignoring printing and plate making requirements, directly affect the overall quality of printing. The image is the finishing touch. It has bright colors, rich layers, clear and realistic pictures, giving readers the enjoyment of beauty.
很难梦想,一组偏色严峻、缺少阶调层次、发虚变形的原稿,会引出夸姣的效果。质量差的原稿,虽然可以处理,但要清楚一点的是,图片信息只能在原稿的基础上去拾取信息,而不能再造信息。
It's hard to dream. A group of manuscripts with severe color bias, lack of gradation and distorted falsehood will bring about brilliant effect. Although poor quality manuscripts can be processed, it should be clear that the picture information can only be picked up on the basis of the original, but not re-created information.
每一次调整都会丢失许多层次、颜色信息。这项作业的基本原则是:忠实于原稿,高于原稿并力求风格共同。在图片处理过程中首要要掌握以下几点:
Each adjustment will lose many levels of color information. The basic principle of this work is: fidelity to the manuscript, higher than the manuscript and the same style. In the process of image processing, we should first grasp the following points:
a、图片层次的调整。
A, image level adjustment.
b、校色,校色在于再现原稿所反映的(而非原稿本身)颜色。
B, color correction and color correction are to reproduce the color (rather than the manuscript itself) reflected in the original manuscript.
c、RGB至CMYK格式的变换,印刷出片所用的图片格式有必要为CMYK格式。
The transformation of C and RGB to CMYK format is necessary for CMYK format.
d、锐化,锐化是前进图像清楚度的有用方法。
D, sharpening and sharpening are useful ways to advance the clarity of images.
在photoshop里可以看到,一张CMYK的图片(一般我们遇到的图片RGB格式的居多,可变换后才华CMYK格式再看),在通道面板里,可以看到有四个通道分别表明晰一直颜色。出片是用照排机的,有专门的软件,操作相对来说并不难。菲林出来了。
In photoshop, you can see a CMYK image (most of the pictures we encounter are in RGB format, which can be changed before viewing in CMYK format). In the channel panel, you can see four channels showing clear color. Out of the film is phototypesetting machine, with specialized software, the operation is relatively difficult. Here comes the film.
制版是很简略了解的作业。印刷,印刷分平板印刷、凹版印刷、凸版印刷、丝网印刷等不同的类型,因为印刷原理的不同,其分色出片的时分也会有必定差异。
Plate making is a very simple operation. Printing, printing is divided into flat printing, gravure printing, relief printing, screen printing and other different types, because of the different principles of printing, its color separation time will have certain differences.
分色:分色是一个印刷专业名词,指的就是将原稿上的各种颜色分解为黄、品红、青、黑四种原色颜色,在电脑印刷规划或平面规划图像类软件中,分色作业就是将扫描图像或其它来历的图像的颜色方式变换为CMYK方式。
Colour separation: Colour separation is a professional term for printing. It refers to the decomposition of the original colours into four primary colours: yellow, magenta, blue and black. In computer printing planning or graphic planning image software, color separation operation is to transform the color mode of scanned images or other originated images into CMYK mode.
在photoshop中,分色操作其实非常简略:只需要把图像颜色方式从RGB方式或Lab方式变换为CMYK方式即可。这样该图像的颜色就是由色料(油墨)来表明晰,具有4个颜色的通道,图像在输出菲林时就会按颜色的通道数据生成网点,并分红黄、品红、青、黑四张分色菲林片。
In photoshop, the operation of color separation is very simple: just change the image color mode from RGB mode or Lab mode to CMYK mode. In this way, the color of the image is clearly expressed by the color material (ink), which has four color channels. When the image outputs the film, it generates dots according to the color channel data, and divides them into four color separation films: red, yellow, magenta, blue and black.
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