印刷看样是印刷操作过程中用于检查和控制印刷质量的常用方法，无论是单色印刷还是彩色印刷，印刷过程中，操作者都必须经常利用自己的双眼将印品与样张反复比较，以找出将印品与样张的差别，及时校正，确保印刷产品质量。下面
济南彩色设计印刷厂家为你讲解一个问题：印刷看样时需要关注什么地方？
Printing sample checking is a common method used to check and control the printing quality during the printing operation. Whether it is monochrome printing or color printing, the operator must often use his eyes to repeatedly compare the print with the sample in order to find out the difference between the print and the sample, and correct it in time to ensure the quality of the printed product. Next, Jinan Color Design and Printing Factory will explain a question to you: What should we pay attention to when printing samples?
光的强弱
Intensity of light
光的强弱直接影响到对印品样张颜色的判断，光的强弱不仅对色彩的明暗有影响，还会改变颜色的相貌。平时我们观察一个受光的圆柱，迎光的一面为明调，背光的面为暗调。明暗的结合部分为是中间调。
The intensity of light directly affects the judgment of the color of the printed sample. The intensity of light not only affects the brightness of the color, but also changes the appearance of the color. Usually we observe a light-receiving cylinder. The light facing side is bright and the backlight side is dark. The combination of light and dark is the middle tone.
同一物体，在标准光源下是正色，若光线逐渐变强，其色调也随之向明亮的色相转变，光亮增强到一定程度，任何颜色都可以变为白色。黑色的瓷器其反光点也是白色的，因反光点处光集中，并强烈地反射。同理，光线逐渐减，各种色彩向明度低的色相转变，光减弱到一定程度，任何颜色都会变成黑色，因物体不反射任何光就是黑色的。
The same object is a positive color under the standard light source. If the light becomes stronger gradually, its hue will also change to the bright hue. If the light is enhanced to a certain extent, any color can become white. The reflective point of black porcelain is also white, because the light at the reflective point is concentrated and strongly reflected. In the same way, the light gradually decreases, and various colors change to low lightness. When the light weakens to a certain extent, any color will become black, because the object does not reflect any light is black.
印刷车间的看样台必须符合要求，一般要求照度达到100lx左右，才能正确识别颜色。
The sample viewing platform in the printing workshop must meet the requirements. Generally, the illumination must reach about 100lx to correctly identify the color.
不同的色光
Different color light
色光下看样与日光下看样是有差异的，在生产实际中，多数是在电源的照射下工作，而每种光源均带有一定颜色。这就给正确判断原稿或产品颜色带来一定困难，色光下观色，色彩变化一般是相同色变浅，补色变暗，在印刷车间，一般都选择色温较高（3500~4100k），显色系数较好的日光灯作为看样光源，但要注意日光灯略偏蓝紫色。
There are differences between looking at samples under colored light and looking at samples under sunlight. In production practice, most of them work under the illumination of power supply, and each light source has a certain color. This makes it difficult to correctly judge the color of the original or the product. When viewing the color under the color light, the color change is generally the same color becoming lighter and the complementary color becoming darker. In the printing workshop, the fluorescent lamp with high color temperature (3500~4100k) and good color rendering coefficient is generally selected as the sample light source, but it should be noted that the fluorescent lamp is slightly blue-purple.
先后颜色对比
Sequential color contrast
先看样张再看印品和先看印品再看样张，其结果会略有不同，分两次看一种色时感觉不一样。这种现象叫做先后颜色对比反应。先看的颜色使该色的色神经纤维兴奋，马上再看别的颜色，其它色神经很快兴奋引起色感，而先看色的色神经处于兴奋后的抑制状态，再兴奋较慢，引起了负色相反应。
The results will be slightly different when you look at the sample first and then the print and then the sample. When you look at the same color twice, you will feel different. This phenomenon is called sequential color contrast reaction. The color you see first excites the color nerve fibers of that color, and then look at another color immediately. The other color nerves are excited quickly and cause color sensation, while the color nerve you see first is in the inhibition state after being excited, and then excited slowly, causing negative color reaction.
这种反应加上新看色的色相，形成新的色，所以改变了后看颜色。而且改变的色相还是有规律，是向先看颜色的补色方面改变。
This reaction, coupled with the hue of the new color, forms a new color, so it changes the color after looking. Moreover, the change of hue is still regular. It is to change the complementary color of the color first.
We should pay attention to the above three problems and grasp their changing rules when we actually look at the samples, so as to ensure the stability and improvement of the quality of printed products. Are there any other relevant questions? Welcome to our website https://www.sdhzyw.com Consulting!
