Four color printing is a kind of common color printing, but some of the four-color printing with higher requirements can not meet the demand, and spot color printing appears. Then what are the characteristics and differences between four-color printing and spot color printing? Jinan printing factory will make an in-depth analysis for you.

　　這四種顏色是混合色，分別是綠、綠、黃、黑四種顏色，即C、M、Y、K，這四種顏色在PS中很常見，它們以不同的比例來(lái)分配想要的顏色和圖像。因此，在我們常見的彩色印刷機(jī)中間有四組，這就是原因。對(duì)于一些的印刷公司來(lái)說(shuō)，在各種印刷生產(chǎn)中，可以更好的掌握印刷色彩處理的原理和方法。一般來(lái)說(shuō)，在印刷三原色時(shí)，C、M、Y、K這四種顏色都有自己的彩版，在彩版上記錄著這四種顏色的網(wǎng)點(diǎn)，這些網(wǎng)點(diǎn)是由網(wǎng)版上的網(wǎng)版產(chǎn)生的，這四種彩版合在一起就形成了三原色的定義。北京印刷廠專色印刷底色但四色印刷的缺點(diǎn)是通過(guò)圖像網(wǎng)點(diǎn)的密度來(lái)調(diào)整比例，這樣的方法在重印色塊時(shí)有些色塊肉眼就能看到網(wǎng)點(diǎn)，造成色塊紋理不強(qiáng)。

　　These four colors are mixed colors, which are green, green, yellow and black, i.e. C, m, y and K. These four colors are very common in PS, and they distribute the desired colors and images in different proportions. Therefore, there are four groups in the middle of our common color printing machines, which is the reason. For some professional printing companies, in a variety of printing production, can better grasp the principle and method of printing color processing. Generally speaking, when printing three primary colors, C, m, y and K all have their own color plates. The dots of these four colors are recorded on the color plates. These dots are generated by the screen plates on the screen plates. The combination of these four color plates forms the definition of three primary colors. The disadvantage of spot color printing in Beijing printing factory is to adjust the proportion through the density of image dot. In this way, when reprinting the color block, some color blocks can see the dot with naked eyes, resulting in the weak texture of the color block.

　　在這種情況下專色出現(xiàn),來(lái)彌補(bǔ)這種不足,專色是由的色譜法,根據(jù)色譜的比例分配所需的油墨顏色直接印刷,顏色不需要點(diǎn)密度來(lái)控制,所以整個(gè)顏色是固體,看起來(lái)更紋理。專色是金色和銀色，但實(shí)際上潘通光譜中有成千上萬(wàn)種專色。如果所需要的顏色不在色譜上，也可以根據(jù)色彩大師的經(jīng)驗(yàn)來(lái)調(diào)整所需要的顏色，來(lái)找到油墨的比例。北京印刷廠四色印刷圖片專版彩印一般在高檔書刊中起點(diǎn)綴作用，但多用于包裝，使印刷色彩更有質(zhì)感，視覺沖擊力更強(qiáng)，如香煙包裝等。

　　In this case, spot color appears to make up for this deficiency. Spot color is directly printed by professional chromatography, according to the proportion of chromatography, the ink color required for distribution is directly printed, and the color does not need point density to control, so the whole color is solid and looks more textured. Spot colors are gold and silver, but actually there are thousands of spot colors in Pantone spectrum. If the required color is not on the chromatogram, you can also adjust the required color according to the experience of the color master to find the proportion of ink. The special color printing of four-color printing pictures in Beijing printing factory is generally used in high-end books and periodicals, but it is mostly used for packaging, making the printing color more texture and visual impact stronger, such as cigarette packaging, etc.

　　辨別四色和專色的方法很簡(jiǎn)單，那就是用放大鏡去看印刷的網(wǎng)點(diǎn)，專色就是不看網(wǎng)點(diǎn)。濟(jì)南印刷廠的人員不用放大鏡就能用肉眼分辨四種顏色和專色。本文來(lái)源：http://www.seven2000.com，轉(zhuǎn)載請(qǐng)注明出處。

　　The way to distinguish four colors and spot color is very simple, that is to use a magnifying glass to see the printing dot, spot color is not to see the dot. The professionals of Jinan printing factory can distinguish four kinds of colors and spot colors with naked eyes without magnifying glass. Source: http://www.jingyinshua.com, reprint please indicate the source.