很多人對于印刷的質量問題并不了解，把問題的原因歸咎于印刷設備，其實是錯誤的，紙張的特性對于印刷品來說也是關重要的影響因素。濟南印刷廠為大家詳細介紹紙張含水量對印刷品質量的影響。

Many people do not understand the printing quality problem. It is wrong to blame the printing equipment for the problem. The characteristics of paper are also important factors for printed materials. Jinan Printing Factory introduces the influence of paper moisture content on the quality of printed matter in detail.

對于精細的印刷品，套準要求較高，一般允許誤差在0.05mm內。多色印刷中，引起套印不準的原因很多，但印刷過程中紙張因含水量變化而產生的紙張變形是一個重要因素。

For fine print, the registration requirements are high, and the allowable error is generally within 0.05mm. In multi-color printing, there are many reasons for inaccurate overprint, but the paper deformation caused by the change of water content in the printing process is an important factor.

紙張的含水量是指紙張中所含水分的重量占該紙張重量的百分比。紙張含水量過大時，紙中纖維、填料與膠料之間的結合力就容易降低，由此將降低紙張的硬度和挺度，影響紙張表面強度，導致印刷產品出現脫墨、分層等不良情況發(fā)生，還易增加紙張塑性、產生變形、造成印品套印不準、延長印跡干燥時間、印品背面粘臟，

The water content of paper refers to the percentage of the weight of water contained in the paper to the weight of the paper. When the water content of the paper is too high, the binding force between the fibers, fillers and sizing materials in the paper is easy to reduce, which will reduce the hardness and stiffness of the paper, affect the surface strength of the paper, lead to undesirable situations such as deinking and layering of the printed products, and also increase the plasticity of the paper, produce deformation, cause inaccurate overprinting, prolong the drying time of the print, and make the back of the printed products dirty,

如果紙張含水量過低的話，導致紙張彈性差，紙發(fā)脆，降低撕裂度，印刷時易產生靜電。紙張含水量的變化不僅導致紙張的膨脹或收縮，而且還會因為含水量變化使得紙張局部尺寸變化，從而導致紙張變形，卷曲、打皺、荷葉邊等。紙張變形是引起多色印刷套印不準的重要因素。

If the water content of the paper is too low, it will lead to poor elasticity of the paper, brittle paper, reduced tearing, and easy to generate static electricity during printing. The change of paper moisture content not only leads to the expansion or contraction of the paper, but also changes the local size of the paper due to the change of water content, resulting in paper deformation, curling, wrinkling, ruffles, etc. Paper deformation is an important factor that causes overprint inaccuracy in multi-color printing.

①室溫一定，高濕度時相對濕度變化引起含水量的變化率比中濕度時相對濕度變化引起含水量的變化率大得多;低濕度時也是如此。從這一角度看，印刷在中等濕度條件下進行有利。

① At a certain room temperature, the change rate of water content caused by the change of relative humidity at high humidity is much greater than that at medium humidity; This is also true at low humidity. From this point of view, printing in moderate humidity conditions is advantageous.

②兩者組成一個閉合的滯后回路，這種現象稱為紙張的調濕滯后現象。為了使紙張的含水量在整個紙面上保持均勻一致，對環(huán)境濕度的敏感程度有所降低，提高紙張尺寸的穩(wěn)定性，一般在印刷之前，要進行調濕處理。

② The two constitute a closed hysteresis loop, which is called the hysteresis of paper humidity regulation. In order to keep the moisture content of the paper uniform on the whole paper surface, reduce the sensitivity to environmental humidity, and improve the stability of the paper size, moisture conditioning treatment is generally required before printing.

濟南印刷廠提醒大家，在印刷時我們要選擇質量好的紙張，很多商家為了牟利在印刷用紙上偷工減料，這樣的印刷品十分的影響視覺感受。更多相關注意事項就來我們網站http://buiy.cn咨詢了解吧！

Jinan Printing Factory reminds everyone that we should choose high-quality paper when printing. Many businesses cut corners on printing paper to make profits. Such printing products greatly affect visual perception. More relevant precautions come to our website http://buiy.cn Ask and understand!