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造成宣传页“花版”现象的原因
作者:admin 来源:http://www.sdhzyw.com 发布时间:2018-1-17 17:06:37 浏览次数:546
  润版液的pH值应控制在4.5~5.5,若润版液的pH值控制不当,会影响印迹的干燥速度和印刷质量。如果润版液酸性过强,对版面空白部分的砂眼和图文部分的亲油基腐蚀性就会加大,易造成“花版”现象,使印版耐印力下降。
The pH value of the wetting solution should be controlled from 4.5 to 5.5, and the improper control of the pH value of the wetting solution will affect the drying speed and printing quality of the imprinting. If the fountain solution of acid too strong, increase the layout of the blank part of the sand and the graphic part of the lipophilic corrosion will cause "flower version" phenomenon, make the printing plate down.
同时,其还易导致油墨乳化、墨辊脱墨等现象,使更终印刷品灰暗无光。如果润版液酸性过弱,会使印版空白部分亲水斥油性能减弱,版面易起脏,也易因印刷品网点增大而造成糊版现象。
At the same time, it also causes the ink emulsification, roller stripping phenomenon, so that the final printed dark. If the dampening fluid is too weak, it will make the blank part of the printing plate weaken the performance of hydrophilic and oil repellent, and the layout is easy to get dirty. It will also cause paste phenomenon because of the increase of printed dot.

正常印刷过程中,要勤擦橡皮布,以减少纸粉、油墨的堆积,避免影响橡皮布的还原性。由于新橡皮布弹性好、伸展性好,上机绷紧应逐渐进行。日常操作时,每绷紧一次,待胶印机合压后停下再绷紧一次,这样反复绷紧几次,从而达到使橡皮布绷紧的要求。

济南宣传页印刷

In the process of normal printing, it is necessary to clean the rubber cloth to reduce the accumulation of paper powder and ink, so as to avoid the reduction of the rubber cloth. Due to the good elasticity and extensibility of the new rubber cloth, the tightening up of the machine should be carried out gradually. Every operation is tightened once a day until the offset press is stopped and then tightened once again, so that it repeatedly tightens several times, so as to make the rubber cloth tighten.
晒版时,在PS版靠身、靠外、拖梢三部位添加色标,这样,在检查印刷成品时,易发现套印不准、纸张颠倒、双张造成的整版漏印和不同印版混合使用的问题。
When you print, the PS version, the outer body, drag and shoot three parts add color, so, in the inspection of printed product, easy to find, the paper misregister upside down, double sheet caused by the full page and mixed use of different plate printing problems.
晒版人员必须认真检查PS版和胶片的质量,印版上机前也要检查一下,避免因印版质量问题而影响生产。同时,校版时要熟练准确,尽量减少校版次数;拉版时要力道均匀,避免印版因人为拉长变形而造成套印不准。
The printing staff must carefully check the quality of the PS and film, and check it before the plate is on the machine, so as to avoid the impact on the production due to the quality problems of the plate. At the same time, the school edition should be skillful and accurate, as far as possible to reduce the number of school editions; when the plate is drawn, it should be uniform in order to avoid the printing of the plate because of the lengthening deformation.
在多色印刷过程中,选用施胶度较好、适应性较强的纸张,避免纸张产生拉毛、掉粉等现象。印刷前,应把分切好的纸张进行打包,防止其因受潮变形而影响印刷走纸。
In the printing process, the degree of sizing, better adaptability of paper, paper production to avoid napping, off powder phenomenon. Before printing, the cut paper should be packed to prevent it from affecting the printing of paper because of the damp deformation.
亮光快干型油墨是渗透干燥型油墨,适用于胶版纸的印刷,能够避免树脂型油墨产生的粉化无光泽和粘脏、拉毛等现象,干燥速度较快。但在使用过程中,要勤搅墨斗,以防油墨干燥、结皮。
Light and quick drying inks penetration drying inks, suitable for offset printing, can avoid resin inks produced by powder matte and dirt, hair and other phenomena, fast drying. But in use, frequently stir ink, to prevent ink drying and crusting.
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