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          印刷品的工序
          作者︰admin 來源︰本站 發布時間︰2018-11-2 10:12:07 瀏覽次數︰147
          許多老板反映現在印刷職業是一個比一個難做,也是優勝劣汰的職業,要做個好的印刷品是有許多工序的,要是有哪部工序出了問題,後邊就會影響到印刷品的質量,印刷分為印前、印刷、印後。
          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這個概念,是因為印刷品中的顏色都是由CYMK四種顏色所構成的。一般我們所接觸的印刷品,是按照四色疊印而成的。

          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.

          印前原稿質量和用色水平是限制印刷質量的重要要素。在五顏六色原稿的選用和用色、配色上,是否滿足制版印刷要求,已成為影響整體印刷質量的首要要素。特別是相片,忽視印刷制版要求,直接影響印刷整體質量。圖像是畫龍點楮之筆,顏色鮮艷、層次豐盛、清楚逼真的圖片,給讀者以美的享受。
          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.
          很難夢想,一組偏色嚴峻、缺少階調層次、發虛變形的原稿,會引出夸姣的效果。質量差的原稿,雖然可以處理,但要清楚一點的是,圖片信息只能在原稿的基礎上去拾取信息,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.
          每一次調整都會丟失許多層次、顏色信息。這項作業的基本原則是︰忠實于原稿,高于原稿並力求風格共同。在圖片處理過程中首要要掌握以下幾點︰
          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、圖片層次的調整。
          A, image level adjustment.
          b、校色,校色在于再現原稿所反映的(而非原稿本身)顏色。
          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格式的變換,印刷出片所用的圖片格式有必要為CMYK格式。
          The transformation of C and RGB to CMYK format is necessary for CMYK format.
          d、銳化,銳化是前進圖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,一張CMYK的圖片(一般我們遇到的圖片RGB格式的居多,可變換後才華CMYK格式再看),在通道面板里,可以看到有四個通道分別表明晰一直顏色。出片是用照排機的,有專門的軟件,操作相對來說並不難。菲林出來了。
          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.
          制版是很簡略了解的作業。印刷,印刷分平板印刷、凹版印刷、凸版印刷、絲網印刷等不同的類型,因為印刷原理的不同,其分色出片的時分也會有必定差異。
          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︰分色是一個印刷專業名詞,指的就是將原稿上的各種顏色分解為黃、品紅、青、黑四種原色顏色,在電腦印刷規劃或平面規劃圖像類軟件中,分色作業就是將掃描圖像或其它來歷的圖像的顏色方式變換為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,分色操作其實非常簡略︰只需要把圖像顏色方式從RGB方式或Lab方式變換為CMYK方式即可。這樣該圖像的顏色就是由色料(油墨)來表明晰,具有4個顏色的通道,圖像在輸出菲林時就會按顏色的通道數據生成網點,並分紅黃、品紅、青、黑四張分色菲林片。
          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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