设为首页 | 加入收藏 | 联系我们
产品分类
当前位置:首页 - 新闻动态-行业动态
新闻动态
联系我们
济南华政印务有限公司
地址:济南市历城区工业北路161-1号华政印务
电话:0531-88771456
手机:13698644688
邮箱:371162023@qq.com
传真:0531-80992585
联系人:万经理
印刷行业掌握水量控制的必要性!
作者:admin 来源:http://www.sdhzyw.com 发布时间:2019-4-25 14:01:34 浏览次数:230
在济南彩色设计印刷中,诸多印刷故障都与水有关,所以水墨平衡显得尤为重要。而只有了解和掌握印版水膜形成过程,才能更好地控制水墨平衡,减少印刷故障的发生。
In Jinan color design printing, many printing faults are related to water, so ink balance is particularly important. Only by understanding and mastering the formation process of water film can we better control the balance of ink and water and reduce the occurrence of printing faults.
在彩色印刷时,一开始调整墨色和水膜控制非常重要。水膜控制好,墨膜自然就定形;水膜控制不好,调整墨色时虽然墨膜定形,但这是一种假水墨平衡,在印刷开始时容易出现墨色变色现象,加上墨辊表面出现结晶物,更容易造成墨色变色严重,直接影响成品质量。所以,印刷开始时要重点控制好印版水膜厚度。
In color printing, it is very important to adjust ink color and water film control at the beginning. When the ink film is well controlled, the ink film will be fixed naturally; if the water film is not well controlled, although the ink film is fixed when adjusting the ink color, it is a false ink balance, which is prone to discoloration at the beginning of printing, and the crystals on the surface of the ink roll, it is easier to cause serious discoloration of the ink color and directly affect the quality of the finished product. Therefore, at the beginning of printing, we should focus on controlling the thickness of water film.
正常情况下计量辊与水斗辊间压力大,会造成水膜薄,属于挤压状态。计量辊与水斗辊间压力小,造成水膜厚,属于滚压状态,运转方式为转速慢而供水水膜薄而不均匀。
Normally, the pressure between measuring roll and bucket roll is large, which will cause thin water film and belong to extrusion state. The pressure between measuring roll and bucket roll is small, which results in thick water film and belongs to rolling state. The running mode is slow speed and thin and uneven water film.

这两种情况的水膜在新机器开始时效果不明显,随着机器使用一段时间后,两种水膜印出的同一种印品颜色不一致。这是因为新机器的水、墨辊都处于较理想状态,水、墨辊平衡速度快。

济南彩色设计印刷

In both cases, the effect of the water film is not obvious at the beginning of the new machine. With the use of the machine for a period of time, the color of the same print printed by the two kinds of water film is inconsistent. This is because the water and ink rollers of the new machine are in an ideal state, and the balance speed of the water and ink rollers is fast.
随着机器使用一段时间后,胶辊表面的绒面被糊死形成一层结晶物,胶辊表面不容易回到原始状态,在开始印刷时由于用水量大,油墨在墨辊上严重乳化,造成其黏性迅速下降,并发生色变,尤其是品红、青叠印时非常明显,叠印不上,从而造成花版现象,调整品红、青色序也没有效果。在这种情况下需要调整水斗辊与计量辊间的压力,使两边先上脏,两辊之间挤压,使水膜变得薄而均匀,并与预润版转速相对接近,以便更好地调整墨色控制水膜。
With the machine being used for a period of time, the suede on the surface of COTS is pasted to form a layer of crystals, and the surface of COTS is not easy to return to its original state. In the beginning of printing, because of the large amount of water, ink is seriously emulsified on the ink rolls, resulting in a rapid decline in its viscosity and color change, especially when magenta and blue are overlapped, it is very obvious that the overlapping can not be printed, thus causing printing plate phenomenon and adjustments. The order of red and blue has no effect. In this case, it is necessary to adjust the pressure between the bucket roll and the measuring roll so that the two sides are dirty first and squeezed between the two rolls to make the water film thinner and more uniform, which is relatively close to the speed of the pre-wetting plate, so as to better adjust the ink color to control the water film.
好了,以上由济南彩色设计印刷整理提供的精彩内容就到这里了,更多相关的业务问题可以咨询我们官网的客服人员:http://www.sdhzyw.com!谢谢支持!
Okay, that's all for the wonderful content provided by Jinan color design and printing. More business related questions can be consulted with our customer service staff on our official website: http://www.sdhzyw.com! Thank you for your support.