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你知道是什么原因影响彩色印刷品的色彩吗?
作者:admin 来源:本站 发布时间:2018-11-16 10:28:32 浏览次数:141
彩色印刷品的质量好坏决定着这个印刷品是否受欢迎,一般不是很内行的只是看到的表面色彩鲜亮,至于有的印刷品为什么呈现色彩要好,有的质量存在着很大差异,这些都是跟机器有关,有的跟印刷的师傅水平有关,那么印刷品分为许多种,彩色印刷需要有色彩的搭配,那么影响印刷品颜色的主体因素有哪些呢?
The quality of color printing determines whether this print is popular or not. Generally speaking, what is not very professional is that the surface color is bright. As for why some prints present better colors, there are great differences in quality. These are all related to machines, and some to the level of the master of printing, so printing. Brushes are divided into many kinds, color printing needs color matching, so what are the main factors affecting the color of printed matter?
一、压力不适引起的印刷色差
1. Printing chromatic aberration caused by pressure discomfort.
印刷压力是油墨转移的条件之一,由于印版表面不可能绝对平整的,纸张表面也不可避免存在细微的凹凸状及厚薄不均情况,若印刷压力不足或不均匀时,印刷墨层就容易出现浓淡不均现象。理想的印刷工艺是在“三平”的基础上,即要求印版面与承印物和包衬表面都达到比较平的条件, 使印品上获得较均匀的墨色。
Printing pressure is one of the conditions of ink transfer. Because the printing plate surface can not be absolutely flat, the paper surface can not avoid the existence of fine bumps and uneven thickness. If the printing pressure is insufficient or uneven, the printing ink layer will easily appear uneven. The ideal printing process is based on the "three-level", that is to say, the printing plate and the substrate and the coating surface are required to achieve a relatively flat condition, so that a more uniform ink can be obtained on the prints.
当印刷压力不足或不均匀时,包衬体与印版面存有接触不良情况时,则需通过加大输墨量,来满足版面着墨的视觉效果,但是这样不仅会增大油墨的耗用量,又容易产生印刷色差和印品出现粘脏质量问题。所以,防止印刷色差的产生,应把握好印刷“三平”的基本条件,并采用均匀而又恒定的压力进行印刷。
When the printing pressure is insufficient or uneven, the bad contact between the liner and the printing plate needs to be increased to meet the visual effect of the printing plate, but this will not only increase the consumption of ink, but also prone to printing color difference and sticky quality problems. Therefore, in order to prevent printing color difference, we should grasp the basic conditions of printing "three levels" and use uniform and constant pressure to print.
二、墨辊不良引起的印刷色差
Two. Printing chromatic aberration caused by poor ink roller.
平版、凸版等印刷工艺,印品能否获得均匀的墨色,胶辊的质量有着至关紧要的作用。
In lithographic and relief printing processes, the quality of COTS plays an important role in the uniform ink color of printed products.
承印彩色印刷品的机器上,一般装有传墨辊、匀墨辊和着墨辊三种,其中对墨色浓淡影响较大的是传墨胶辊和着墨辊。而墨辊的弹性、粘性、圆心度、硬度和表面光洁度如何,很大程度上决定了印品墨色质量。
Ink transfer rollers, ink leveling rollers and inking rollers are generally installed on the printing machines of color prints. Ink transfer rollers and inking rollers have great influence on the ink color. The elasticity, stickiness, roundness, hardness and surface finish of ink rollers largely determine the ink quality of printing products.
若着墨辊的弹性差、粘性不足、辊体偏心、胶体过硬以及胶体光洁度差等情况存在时,印刷过程中容易造成刷墨不均匀或不稳定现象,使各印张的印刷墨色不一致。所以,印刷彩色产品应采用质量较好的胶辊,才能确保每一印刷周期涂布于版面上的油墨保持基本一致。

If there are some problems such as poor elasticity, insufficient stickiness, eccentricity of rollers, too hard colloid and poor colloid finish, it is easy to cause uneven or unstable brush ink in the printing process, which makes the ink color of each printing sheet inconsistent. Therefore, printing color products should adopt better quality cots to ensure that the ink coated on the plate in each printing cycle remains basically the same.

三、给墨装置不良引起的印刷色差
Three. Printing chromatic aberration caused by poor inking device.
当墨斗铁辊圆心度差或存在磨损变形情况,墨斗钢板也出现磨损变形,以及控制墨斗辊转动的机构存在缺陷,使印刷过程中输墨量不稳定,也会引起印刷色差的产生,墨要全面增大或减少输送量。
When the ink bucket iron roll has poor centricity or wear deformation, the steel plate of the ink bucket also has wear deformation, and the mechanism controlling the rotation of the ink bucket roll has defects, which makes the ink delivery rate unstable in the printing process, and also causes the printing color difference. The ink should be increased or reduced in an all-round way.
有两种调整方式,一是通过调整墨斗钢片与传墨(给墨)铁辊间隙来实现;二是通过调整传墨铁棍的转动弧度的大小来实现。油墨在较稀的情况下,不宜将钢片与铁棍间隙调的过大,以免漏墨造成墨色不均。调整给墨量时,一般应将传墨铁棍的转动弧度控制在其调节范围的一半之间,这样可使印刷过程中的油墨浓度出现变化时,可灵活调整给墨量,以确保印品墨色的均匀一致,防止印刷色差问题的出现。
There are two ways to adjust, one is to adjust the gap between the steel sheet of the ink bucket and the iron roll of the ink transfer (ink feed), the other is to adjust the rotation radian of the ink transfer iron rod. In the case of thinner ink, it is not advisable to adjust the gap between steel sheet and iron rod too large to avoid ink leakage resulting in uneven ink color. When adjusting the ink feeding quantity, the rotation radian of the ink transfer iron bar should be controlled between half of its adjusting range, so that the ink feeding quantity can be adjusted flexibly when the ink concentration changes in the printing process, so as to ensure the uniformity and consistency of the ink color of the printed products and prevent the occurrence of printing color difference problems.
彩色印刷品的色彩决定着很大的问题,所以在印刷前要注意着色彩的搭配和色彩的应用,这样才能制作出精美的印刷品。
The color of color printing determines a lot of problems, so we should pay attention to color matching and color application before printing, so as to produce exquisite printed matter.
上面的信息你了解了吗?今天的信息是由我们济南书刊杂志印刷厂家为您提供的,如果你还想了解更多请点击我们的网站:http://www.sdhzyw.com谢谢!
Do you understand the above information? Today's information is provided for you by our Jinan magazine printing company. If you want to know more, please click on our website: http://www.sdhzyw.com. Thank you!