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印刷时考验细心程度的四个注意事项!
作者:admin 来源:http://www.sdhzyw.com 发布时间:2019-6-27 14:12:36 浏览次数:206
印刷是非常需要我们细心的的一件事,只有足够细心,才可以印刷出完美的印刷品,下面济南彩色设计印刷公司来给我们总结几点印刷时特别看眼我们细心程度的四点注意事项,希望对大家有所帮助!
Printing is a very important thing for us to be careful. Only if we are careful enough, can we print the perfect printed matter. Now Jinan Color Design Printing Company will summarize some points for us to pay special attention to when printing. I hope it will be helpful to you all! 
一、注意观察样张
I. Pay attention to the observation sample
①印刷中抽样检查。进入正式印刷后不久,在开印时确定的供墨量、上水量多少会有些变化,应频繁抽样检查,进行再调整。在印刷速度保持不变,供墨量和上水量等都处于稳定的状态时,按每印500~1000张/次的比例进行抽样检查。
Sampling inspection in printing. Shortly after entering the formal printing, there will be some changes in the amount of ink supply and water supply determined at the time of printing. Frequent sampling inspection and readjustment should be carried out. When the printing speed remains unchanged, ink supply and water supply are in a stable state, the sampling inspection is carried out according to the ratio of 500 to 1000 sheets per printing.
②夹入警示纸条。正式印刷中,对于发生故障的地方,作为一种记号,应夹入细长的警示纸条,以方便于在后工序中进行检查。
(2) Insert warning note. In formal printing, as a sign, a long warning note should be inserted to facilitate the inspection in the later process.
二、注意上水的变化
2. Pay attention to the change of water supply
①注意正式印刷初期上水的变化。试印时的上水量和进入正式印刷后的上水量,多少都会有些变化,一定要一边注意观察样张有无重影、水扛子,一边注意调解印版的给水量。
Attention should be paid to the change of water supply in the initial stage of formal printing. The amount of water used in trial printing and after entering the formal printing will change somewhat. We must pay attention to the observation of duplication of sample sheets and water carriers, and adjust the amount of water supplied to the printing plate at the same time.
②注意正式印刷过程中上水的变化。要密切注意机器主体发热和车间内的通风状况给上水带来的影响,酒精润版要注意润湿系统冷却装置,控制好润湿液的温度,上水过少,会使印版起脏;上水过多将引起油墨乳化,会带来一系列问题。比如印品无光泽,纸张伸缩而套印不准,延缓油墨的干燥等。

(2) Pay attention to the change of water supply in the process of formal printing. It is necessary to pay close attention to the influence of the heating of the main body of the machine and the ventilation condition in the workshop on the water supply. Alcohol wetting plate should pay attention to the cooling device of the wetting system, control the temperature of the wetting liquid, and too little water will make the printing plate dirty; too much water will cause ink emulsification, which will bring a series of problems. For example, the gloss of printing products, paper flexibility and improper overprinting, delaying the drying of ink and so on.

济南彩色设计印刷

三、注意油墨的变化
3. Pay attention to the change of ink
①注意墨斗的油墨。墨斗的油墨从墨斗辊和墨斗刮刀之间的缝隙传出,是由油墨的自重而自然被挤压出来的。因此,墨斗中油墨量的多少,直接影响油墨的输出量。所以,要注意让墨斗中保持一定量的油墨。另外,印刷油墨具有触变性质。放置在墨斗中较久,流动性会逐渐变差,因而,要经常用墨刀在墨斗中搅拌,或者安装油墨搅拌器。
Pay attention to the ink in the ink bucket. Ink from the bucket roller and the bucket scraper gap between the ink, is the weight of the ink and is naturally squeezed out. Therefore, the amount of ink in ink bucket directly affects the output of ink. Therefore, attention should be paid to keeping a certain amount of ink in the ink bucket. In addition, printing ink has thixotropic properties. If placed in ink bucket for a long time, the fluidity will gradually deteriorate. Therefore, it is necessary to mix in ink bucket with ink knife or install ink mixer.
②防止油墨在机器上干燥。长时间停机如吃饭、休息时,墨辊上的油墨和墨斗中的油墨表面就会干燥。可使用干燥抑制剂喷在需要防止干燥处。
Prevent ink from drying on the machine. When the machine is shut down for a long time, such as eating and resting, the ink on the roller and the ink surface in the ink bucket will dry. Drying inhibitors can be sprayed at places where drying needs to be prevented.
③注意油墨均匀,印刷品的密度视上水量、室温、机器速度不同而发生变化。应经常与标准样张进行对比检查。注意防止出现墨色不均匀现象。
(3) Pay attention to the uniformity of ink, the density of printed matter changes depending on the amount of water, room temperature and machine speed. It should be checked regularly in comparison with the standard sample sheet. Attention should be paid to prevent the uneven ink color.
④保持润湿液的pH值,油墨中添加了辅助剂后,容易影响润湿液的pH值,如pH值增大则易造成印版起脏,因此要特别注意。
(4) Maintaining the pH value of the wetting solution, the addition of auxiliary agent in the ink can easily affect the pH value of the wetting solution. If the pH value increases, the printing plate will be dirty, so special attention should be paid to it.
四、注意背面蹭脏
4. Pay attention to dirty rubbing on the back
背面蹭脏是由于油墨干燥缓慢、图文墨层过厚、纸张平滑度高等原因,使印张表面的油墨粘到上一张印张的背面的现象。
The dirty back is due to the slow drying of ink, thick ink layer and high smoothness of paper, which makes the ink on the surface of the sheet stick to the back of the previous sheet.
今天的精彩内容就暂且和大家介绍到这里了,如果大家还有其他想要了解的地方,欢迎大家到我们济南彩色设计印刷公司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 other places you want to know, please leave a message and comment on our website of Jinan Color Design and Printing Company: http://www.sdhzyw.com, or call our hotline directly. We will give you a satisfactory answer!