专色是指在打印时，不是通过打印C、M、Y、K来合成这种颜色，而是使用特定的墨水来打印颜色。专色油墨由印刷厂预调或由油墨厂生产。印刷品的每一种专色，在印刷时都有与之对应的特殊色版。

Spot color refers to that when printing, the color is not synthesized by printing C, m, y and K, but printed with specific ink. Spot color inks are preset by the printing factory or produced by the ink factory. Each spot color of printed matter has a special color plate corresponding to it when printing.

使用专色使颜色更准确。虽然无法在电脑上准确地表示颜色，但可以通过标准配色系统（如Pantone配色系统）的预印色样，在纸张上看到颜色的准确颜色，从而创建一个非常详细的色板卡。

Use spot color to make the color more accurate. Although the color cannot be accurately represented on the computer, the accurate color of the color can be seen on the paper through the pre printed color sample of the standard color matching system (such as Pantone color matching system), so as to create a very detailed color palette card.

对于设计中设置的非标准专色，印刷厂未必调配准确，屏幕上看不到准确的颜色，所以如果不是特殊需要，不要轻易使用定义的专色自己。

For the non-standard spot color set in the design, the printing factory may not allocate accurately, and the accurate color cannot be seen on the screen. Therefore, if it is not for special needs, do not easily use the defined spot color.

专色印刷是一种灵活复杂的彩色印刷工艺，应合理合理地使用。在印刷包装的实际生产过程中，有时会单独使用专色，但在很多情况下，是普通四色中的两种或三种颜色加上一种或两种专色组合使用。是否使用专色取决于是否有利于降低废品率和提高产品质量；

Spot color printing is a flexible and complex color printing process, which should be used reasonably. In the actual production process of printing and packaging, spot colors are sometimes used alone, but in many cases, two or three of the ordinary four colors plus one or two spot colors are used in combination. The use of spot color depends on whether it is conducive to reducing the scrap rate and improving the product quality;

是否有利于节省时间、缩短工期、提高生产效率；是否有利于降低生产成本，增加企业收入？这就需要包装印刷厂家的工艺技术人员在工艺规划中综合考虑工厂的工艺技术水平、操作人员的技能以及机械设备的使用情况，从而制定出合理的生产工艺。

Whether it is conducive to saving time, shortening construction period and improving production efficiency; Is it conducive to reducing production costs and increasing enterprise income? This requires the process technicians of packaging and printing manufacturers to comprehensively consider the process and technical level of the factory, the skills of operators and the use of mechanical equipment in the process planning, so as to formulate a reasonable production process.

专色印刷制备的油墨是根据色料减法原理得到的，其颜色透明度低，饱和度高。墨色均匀的专色块通常印在实底上，墨量应适当增加。当版面墨层厚度较大时，墨层厚度变化对颜色变化的敏感度会降低，因此更容易获得墨色均匀、厚实的印刷效果。

The ink prepared by spot color printing is obtained according to the principle of pigment subtraction. Its color transparency is low and its saturation is high. Spot color blocks with uniform ink color are usually printed on the solid bottom, and the amount of ink should be increased appropriately. When the ink layer thickness of the layout is large, the sensitivity of the ink layer thickness change to the color change will be reduced, so it is easier to obtain the printing effect of uniform and thick ink color.

山东印刷包装提醒大家，由于目前纸张生产厂家技术水平参差不齐，生产出来的同规格纸张表面颜色或多或少会出现偏差，或发蓝或发黄，这对包装印刷来说是个问题制造商。控制产品的颜色会带来麻烦。如果专色块的不透明度能够合理合理的使用，上述问题就可以很好的。

Shandong printing and packaging reminds you that due to the uneven technical level of the current paper manufacturers, the surface color of the paper with the same specification will deviate more or less, or turn blue or yellow, which is a problem for packaging and printing. Controlling the color of the product can cause trouble. If the opacity of spot color blocks can be used reasonably, the above problems can be well solved.