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、印刷對(duì)包裝箱印刷質(zhì)量的影響。在印刷過(guò)程中，光源的強(qiáng)度、光源與印版的距離、曝光時(shí)間的長(zhǎng)短都會(huì)影響印刷質(zhì)量。光源強(qiáng)，距離短，曝光時(shí)間相對(duì)短；光源弱，距離長(zhǎng)，曝光時(shí)間相對(duì)長(zhǎng)。在一定的光源和距離下，隨著曝光時(shí)間的增加，藥膜在極板可見(jiàn)部分的分解增加，直至藥膜表面完全分解。如果曝光時(shí)間持續(xù)增加，無(wú)光藥膜表面邊緣受到強(qiáng)光輻射的影響，感光藥膜開(kāi)始逐漸分解，使印刷出來(lái)的圖像線條變細(xì)，甚至斷裂模糊。。另外，不同品牌的車(chē)牌所需的曝光時(shí)間也不一樣，必須引起人們的注意。

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、油墨轉(zhuǎn)移對(duì)包裝箱印刷質(zhì)量的影響。山東印刷廠的印刷過(guò)程實(shí)際上就是油墨轉(zhuǎn)移的過(guò)程。一般來(lái)說(shuō)，膠印的油墨轉(zhuǎn)移率比較低，約為38%。印版上墨后與毛毯接觸，油墨轉(zhuǎn)移率約為50%，毛毯再與紙張接觸，油墨轉(zhuǎn)移率約為76%。因此，控制油墨的轉(zhuǎn)移速率是非常重要的。油墨適應(yīng)性、油墨平衡、印版、橡皮布性能、紙張、印刷機(jī)等都會(huì)影響油墨的轉(zhuǎn)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、紙張適性對(duì)包裝箱印刷質(zhì)量的影響。紙張的適用性主要體現(xiàn)在平滑度、白度、剛度等方面。平滑度高的紙需要較少的墨水；平滑度差的紙需要較多的墨水。在印刷過(guò)程中，不同的紙張根據(jù)其表面狀況需要不同的油墨量。在品種、數(shù)量、價(jià)格相同的情況下，平滑度和白度較高的紙張優(yōu)于平滑度和白度較低的紙張。

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、山東印刷廠印刷壓力對(duì)包裝箱印刷質(zhì)量的影響。印刷壓力是指印版滾筒與橡膠滾筒、橡膠滾筒與沖壓滾筒之間的相互作用，是油墨轉(zhuǎn)移的必要條件。印刷壓力過(guò)小，油墨不易轉(zhuǎn)移，油墨較輕，油墨為假；印刷壓力過(guò)大，油墨體積向非圖形部分膨脹，使網(wǎng)點(diǎn)增大嚴(yán)重，圖像失真，也容易降低印版和橡皮布的印刷阻力。因此，必須正確調(diào)整機(jī)械壓力。不同數(shù)量的紙張需要不同的印刷壓力。只有適當(dāng)?shù)挠∷毫Σ拍鼙ＷC油墨顏色均勻，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.