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印刷露白的原因是什么?要如何解决?
作者:admin 来源:http://www.sdhzyw.com 发布时间:2019-7-25 15:40:48 浏览次数:44
印刷露白在生产中经常发生,耗时又耗力还影响生产效率。当出现露白,很多工厂都把注意力集中在如何解决露白,却忘了其实只需要在操作前做一些细微的调整,完全可以避免。下面济南书刊杂志印刷厂家就给大家讲一讲吧!
Printing dew often occurs in production, which is time-consuming and labor-intensive and also affects production efficiency. When exposed, many factories focus on how to solve exposed, but forget that only a few minor adjustments before operation can be avoided. Now Jinan magazines and books printing manufacturers to tell you about it!
首先,印前的准备不可避免。
First, prepress preparation is inevitable.
1、油墨上机前检查油墨粘度,是否正常
1. Check the ink viscosity before putting it on the machine, whether it is normal or not.
印刷露白其中常见的问题就是油墨粘度过低,使用多次后更容易产生。因为在生产过程中,印刷人员经常会向油墨桶内加水,导致油墨粘度下降。从而引发印刷露白,所以上机前一定要对油墨进行检测。
One of the common problems of printing dew is that the ink viscosity is too low, which is easier to produce after many times of use. Because in the production process, the printer often adds water to the ink barrel, which leads to the decrease of ink viscosity. Therefore, it is necessary to test the ink before going to the computer.
2、检查印刷版是否良好
2. Check whether the printing plate is in good condition.
印刷版使用久了或印刷版面油墨污垢过多,就会降低印刷版的油墨转移量,当油墨转移量降低后,印刷露白现象就会经常发生。
If the printing plate is used for a long time or the ink dirt on the printing plate is too much, the ink transfer amount of the printing plate will be reduced. When the ink transfer amount is reduced, the phenomenon of printing bleaching will occur frequently.
3、网纹辊
3. Screen Roller
网纹辊的清洁是直接影响印刷情况的,很大一部分就是网纹辊堵塞没有得到清理,这样网纹辊的载墨量就小,从而导致印刷露白现象。

The cleaning of the screen roller directly affects the printing situation, a large part of which is that the blockage of the screen roller has not been cleaned up, so that the ink load of the screen roller is small, which leads to the phenomenon of printing bleaching.

济南书刊杂志印刷

二、学会印刷露白排除方法
2. Learn how to eliminate the exposure of printing
1、先检测未印刷的纸板厚度值,再检查纸板从送纸单元出来后的纸板厚度值,看纸板是否有被送纸轮压溃。如果压溃了先解决纸板压溃的问题,送纸间隙是纸板厚度-0.3mm。
1. First check the thickness of unprinted cardboard, and then check the thickness of cardboard after it comes out of the feeding unit to see if the cardboard is crushed by the feeding wheel. If crushing first solves the crushing problem of cardboard, the paper feeding gap is cardboard thickness - 0.3mm.
2、检查印刷版压是否正常,可以查看印刷版面是否有足够的油墨量。印刷版硬度实地版适合在34-36度。
2. Check whether the printing press is normal, you can check whether the printing plate has enough ink. The hardness of the printing plate is suitable for the field version at 34-36 degrees.
3、以上都无误再增加印刷压力值,压力值不应过大,过大容易产生印刷糊,印刷慢磨损加快。
3. Above all, the printing pressure value should not be too high. It is easy to produce printing paste when the pressure value is too large, and the slow wear and tear of printing will be accelerated.
当然,如果印刷油墨粘度正确,印刷版、网纹辊良好还是出现印刷露白现象,主要调整方向以油墨工艺为主导,印刷压力切勿一直加大,可以继续提高油墨粘度,及油墨的渗透性。也可以将印刷机调整为隔张送纸状态进行印刷。
Of course, if the viscosity of printing ink is correct, printing plate and screen roller are good or there is a phenomenon of printing bleaching. The main direction of adjustment is to take ink technology as the dominant factor. Printing pressure should not always increase, and ink viscosity and ink permeability can continue to be improved. The printing press can also be adjusted to separate sheet feeding for printing.
今天的精彩内容就暂且和大家介绍到这里了,如果大家有其他想要补充的地方,欢迎大家到济南书刊杂志印刷的官网给我们留言评论:http://www.sdhzyw.com,或者直接拨打我们的咨询热线,我们将给您一个满意的答复!
Today's wonderful content will be introduced here for the time being. If you have anything else to add, you are welcome to leave a message and comment on the official website of Jinan Books and Magazines Printing: http://www.sdhzyw.com, or call our hotline directly. We will give you a satisfactory answer!