Packaging box printing produced by Shandong printing factory is favored by packaging users for its high-grade, exquisite and beautiful appearance. Therefore, customers also attach great importance to the printing quality of the packaging box. So, how does Shandong printing factory control the printing quality of color box? Today, Xiaobian brings you fresh dry goods to share with you!

一、印刷对包装箱印刷质量的影响。在印刷过程中，光源的强度、光源与印版的距离、曝光时间的长短都会影响印刷质量。光源强，距离短，曝光时间相对短；光源弱，距离长，曝光时间相对长。在一定的光源和距离下，随着曝光时间的增加，药膜在极板可见部分的分解增加，直药膜表面完全分解。如果曝光时间持续增加，无光药膜表面边缘受到强光辐射的影响，感光药膜开始逐渐分解，使印刷出来的图像线条变细，甚断裂模糊。。另外，不同的车牌所需的曝光时间也不一样，必须引起人们的注意。

1、 The influence of printing on the printing quality of packing case. In the printing process, the intensity of the light source, the distance between the light source and the plate, and the length of exposure time will affect the printing quality. Strong light source, short distance, relatively short exposure time; weak light source, long distance, relatively long exposure time. Under a certain light source and distance, with the increase of exposure time, the decomposition of the film in the visible part of the plate increased until the film surface completely decomposed. If the exposure time continues to increase, the surface edge of the matte film is affected by strong light radiation, and the photosensitive film begins to decompose gradually, making the printed image lines become thinner, even fracture and blur.. In addition, different brands of license plates need different exposure time, which must be paid attention to.

二、油墨转移对包装箱印刷质量的影响。山东印刷厂的印刷过程实际上就是油墨转移的过程。一般来说，胶印的油墨转移率比较低，约为38%。印版上墨后与毛毯接触，油墨转移率约为50%，毛毯再与纸张接触，油墨转移率约为76%。因此，控制油墨的转移速率是非常重要的。油墨适应性、油墨平衡、印版、橡皮布性能、纸张、印刷机等都会影响油墨的转移。

2、 The influence of ink transfer on the printing quality of packing case. The printing process of Shandong printing factory is actually the process of ink transfer. Generally speaking, offset printing ink transfer rate is relatively low, about 38%. The ink transfer rate is about 50% when the printing plate contacts with the blanket after inking, and the ink transfer rate is about 76% when the blanket contacts with the paper. Therefore, the ink transfer rate is very important. Ink adaptability, ink balance, plate, blanket performance, paper, printing press and so on will affect the transfer of ink.

三、纸张适性对包装箱印刷质量的影响。纸张的适用性主要体现在平滑度、白度、刚度等方面。平滑度高的纸需要较少的墨水；平滑度差的纸需要较多的墨水。在印刷过程中，不同的纸张根据其表面状况需要不同的油墨量。在品种、数量、相同的情况下，平滑度和白度较高的纸张优于平滑度和白度较低的纸张。

3、 The influence of paper suitability on the printing quality of packing case. The applicability of paper is mainly reflected in smoothness, whiteness and stiffness. Paper with high smoothness needs less ink; paper with poor smoothness needs more ink. In the printing process, different paper needs different amount of ink according to its surface condition. In the same variety, quantity and price, the paper with higher smoothness and whiteness is better than that with lower smoothness and whiteness.

四、山东印刷厂印刷压力对包装箱印刷质量的影响。印刷压力是指印版滚筒与橡胶滚筒、橡胶滚筒与冲压滚筒之间的相互作用，是油墨转移的必要条件。印刷压力过小，油墨不易转移，油墨较轻，油墨为假；印刷压力过大，油墨体积向非图形部分膨胀，使网点增大严重，图像失真，也容易降低印版和橡皮布的印刷阻力。因此，必须正确调整机械压力。不同数量的纸张需要不同的印刷压力。只有适当的印刷压力才能保证油墨颜色均匀，厚度一致。

4、 The influence of printing pressure on the printing quality of packing cases in Shandong printing factory. Printing pressure refers to the interaction between plate cylinder and rubber cylinder, rubber cylinder and stamping cylinder, which is the necessary condition for ink transfer. If the printing pressure is too small, the ink is not easy to transfer, the ink is light, and the ink is false; if the printing pressure is too high, the ink volume expands to the non graphic part, which makes the dot increase seriously and the image distortion, and it is easy to reduce the printing resistance of the plate and blanket. Therefore, the mechanical pressure must be adjusted correctly. Different amounts of paper require different printing pressures. Only appropriate printing pressure can ensure the ink color uniformity and thickness.