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解决油墨与纸张之间矛盾的方法
作者:admin 来源:http://www.sdhzyw.com 发布时间:2017-8-14 16:45:36 浏览次数:592

济南宣传页印刷的过程,从某种意义上讲,是解决油墨与纸张之间矛盾的过程。要将印版上图文处的油墨转移到承印物上,就必需施加一定的力,即所谓的印刷压力。它在印刷中具有重要的作用。

The process of printing, in a sense, is the process of resolving the contradiction between ink and paper. To transfer the ink from the printing plate to the substrate, it is necessary to exert a certain force, that is, the so-called printing pressure. It plays an important role in printing.

印刷压力的控制并非易事。印刷压力过大或过小,都会导致印品质量的降低。尤其是压力过大,所带来的弊病更多,它常会引起图文失真、油墨局部堆积、纸张拉毛、印迹的网点扩大,印品层次不清等故障。相反,印刷压力过小时,也会引起印刷图文的转移不够完整、网点不实、缺陷暴露更加显著等众多故障。因此,在印刷过程中,将印刷压力控制在比较适当的范围内就显得非常枢纽了。

Printing pressure control is not easy. Excessive or excessive printing pressure will lead to lower quality of printed matter. In particular, the pressure is too large, defects caused more, it often graphic distortion, ink, paper szlama, partial accumulation of imprinted dot gain caused by printing, unclear levels of fault. On the contrary, the printing pressure is too small, and it will cause the printing picture and text transfer is not complete, the net is not real, the defect is exposed more obvious and many other faults. Therefore, in the printing process, the printing pressure is controlled in a more appropriate range, it seems to be very pivotal.

济南彩色设计印刷

对湿式叠印效果有很大影响,油墨的黏度大,墨层表现出较大的内聚力,假如先印油墨黏度比后印油墨的黏度低,后印油墨会依靠自身的内聚力,把先印的油墨粘走,产生“逆叠印”造成混色。所以控制好黏度显得至关重要。

Have a great influence on the wet overprint effect, the viscosity of the ink, ink layer shows great cohesive force, if the first printing ink viscosity ratio after printing ink viscosity is low, after printing ink will depend on the cohesive force of its own, the first printed ink stick, "inverse overprint" caused by the mixed color. So it's important to control the viscosity.

改变玄色油墨的黏度,保持其他初始前提不变进行印刷,观察露白情况,并记实数据,通过表中的实验数据,绘制出油墨黏度与叠印关系曲线图。

Change the black ink viscosity, remain unchanged for other initial printing, observe the white, and the record data, through the experimental data in the table, draw the curve of ink viscosity and overprint map.

从印刷机的机能来看,印刷速度可以利便地在较大的范围内调整,而印刷压力却不能跟着速度的变化按照某一函数关系自动地跟随变化。因此实际出产中老是习惯先固定印刷压力,然后调整水墨量来适应印刷速度的变化。

From the point of view of the function of the press, the printing speed can be conveniently adjusted in a wide range, but the printing pressure can not follow the change of speed and follow the change automatically according to a function relation. Therefore, the actual production is always used to fix the printing pressure first, and then adjust the amount of ink and wash to adapt to the change of printing speed.

纸张的弹塑性和平滑度。纸张的弹性是指纸张在印刷压力消失后所能恢复的程度。纸张的塑性是指在印刷压力作用下所产生的变形程度。

The elasticity and smoothness of the paper. Elasticity of paper refers to the degree to which the paper can be recovered after the printing pressure has disappeared. The plasticity of paper refers to the degree of deformation caused by the action of printing pressure.

以上便是济南宣传页印刷是今天的分享,您还满意吗,欢迎关注我们的网站:http://www.sdhzyw.com/并且关注我们的产品,我们将为您提供优良的产品,衷心的愿与您建立合作关系。

The above is the Ji'nan propaganda page printing is to share today, you still satisfied with it, welcome to our website: http://www.sdhzyw.com/ and pay attention to our products, we will provide you with excellent products, sincerely wish to establish business relationship with you.