纸张吸墨性不仅与纸张的疏松程度及毛细孔状态有关，还跟纸张纤维的表面性质，填料、颜料、胶料的含量，油墨的组成和特性，印刷方式，印刷压力等因素有关。在实际印刷中，纸张对油墨的吸收可分为两个阶段。 阶段是印刷机压印瞬间，依靠印刷压力的作用把转移到纸张表面的部分油墨压入纸张较大的孔隙，即油墨整体(包括油墨中的颜料)进入纸张孔隙，这个过程一般称为加压渗透阶段。

The ink absorption of paper is not only related to the degree of looseness and pore state of paper, but also related to the surface properties of paper fiber, the content of filler, pigment and rubber, the composition and characteristics of ink, printing mode, printing pressure and other factors. In actual printing, the absorption of ink by paper can be divided into two stages. The first stage is the moment when the printing press presses. Depending on the printing pressure, part of the ink transferred to the surface of the paper is pressed into the larger pores of the paper, that is, the whole ink (including the pigment in the ink) enters the pores of the paper. This process is generally called the pressure infiltration stage.

在这一阶段，纸张对油墨的吸收主要取决于印刷压力的大小、纸张的结构和油墨黏度等因素。如印刷压力较大或纸张的结构疏松，纸张对油墨的吸收能力也会较强。一般来说，印刷结构疏松的纸张，如新闻纸、凸版纸等非涂料纸，印刷压力应小一些，油墨黏度也应低一些。而印刷结构紧密的纸张，如涂料纸，印刷压力可适当大一些，油墨黏度也可稍高一些。 第二阶段是从纸张离开压印区，直到油墨完全干燥为止，这一阶段主要是依靠纸张的毛细管作用吸收油墨，称为自由渗透阶段。

At this stage, the absorption of ink by paper mainly depends on factors such as printing pressure, paper structure and ink viscosity. If the printing pressure is large or the structure of the paper is loose, the absorption capacity of the paper to the ink will also be strong. Generally speaking, for paper with loose printing structure, such as newsprint, relief paper and other non coating paper, the printing pressure should be lower and the ink viscosity should be lower. For paper with compact printing structure, such as coated paper, the printing pressure can be appropriately higher, and the ink viscosity can also be slightly higher. The second stage is to leave the embossing area from the paper until the ink is completely dry. This stage mainly depends on the capillary action of the paper to absorb the ink, which is called the free penetration stage.

在这个阶段，连结料从油墨整体中分离出来，通过小孔隙和纸张纤维粗糙的表面，以相当慢的速度进入纸张内部。因而这个过程实际是连结料从油墨向纸张孔隙迁移的过程，因为连结料从油墨整体中分离出来，将会改变保留在纸面墨膜的结膜性质，墨迹的固着与干燥也要在这个过程中完成。

At this stage, the binder is separated from the ink as a whole and enters the interior of the paper at a rather slow speed through small pores and the rough surface of the paper fiber. Therefore, this process is actually the migration of the binder from the ink to the paper pores, because the separation of the binder from the ink as a whole will change the conjunctival properties of the ink film retained on the paper, and the fixation and drying of the ink should also be completed in this process.

在这个阶段，纸张对油墨的吸收速率决定着印刷品的光泽度，以及是否会发生透印、粉化等现象。当油墨转移到纸张上时，随着时间的延长，低分子的连结料(溶剂)将开始向纸层内渗透，这样纸面上油墨层中的溶剂含量就会下降，油墨黏性增大，墨层产生凝结。 纸张的吸墨性取决于纸张毛细管的数量和毛细管直径的大小。纸张是一种多孔材料，纸张内部的纤维与纤维之间、纤维与填料之间以及颜料粒子之间都存在着许多大小不等的间隙，这些间隙就相当于许许多多的毛细管。

At this stage, the absorption rate of the paper to the ink determines the gloss of the printed matter, and whether there will be through printing, pulverization and so on. When the ink is transferred to the paper, with the extension of time, the low molecular binder (solvent) will begin to penetrate into the paper layer, so that the solvent content in the ink layer on the paper will decrease, the ink viscosity will increase, and the ink layer will condense. The ink absorption of paper depends on the number of paper capillaries and the diameter of capillaries. Paper is a porous material. There are many gaps of different sizes between fibers, between fibers and fillers and between pigment particles in the paper. These gaps are equivalent to many capillaries.

在这些毛细管的作用下，可以吸收油墨中的连结料，而且毛细管的直径越粗，对油墨的吸收速度就越快，因此，纸张的孔隙结构决定了其对油墨的吸收性。 纸张越疏松，孔隙越大，吸墨性也越强。比如新闻纸比较疏松，具有较强的吸墨性，因此转移在新闻纸上的油墨固着很快，有利于印刷速度的提高。

Under the action of these capillaries, the binder in the ink can be absorbed, and the thicker the diameter of the capillaries, the faster the absorption of the ink. Therefore, the pore structure of the paper determines its absorption of the ink. The looser the paper, the larger the pore, and the stronger the ink absorption. For example, newsprint is relatively loose and has strong ink absorption, so the ink transferred on newsprint is fixed quickly, which is conducive to the improvement of printing speed.