Lithographic process conditions showed the layout of water to ensure the realization of the right size is an important part of the normal offset printing. Ideal printing process performance and product quality, while maintaining the ink-water balance conditions, the amount of water is as small as possible, to achieve a normal printing. Therefore, to identify the exact size of the layout, good ink balance control is to ensure the quality of printing products and effective measures.
Currently we discern the layout of water the size of the printing industry methods are generally visual method, by visual observation plate layout, roller surface brightness of the strength and presence or absence of print ink fade and so on, to identify whether the proper layout of water. In addition, daily production can be from the following aspects to identify the size of the layout of water:
1. Roller surface water retention will be more polished visual sense, and there will be drops of water accumulation phenomena string roller and the transfer roller;
2. The ink on the ink roller to produce supersaturated emulsion amount, with the shovel blade have water leaking ink. When the ink to the ink roller, ink roller surface due the presence of water film, the ink is not easy to stir and lose prone to slippage when the ink roller hem;
3. There is a small fountain water droplets oozing, and can be seen when the fountain water drops, indicating water is too large;
4. Parking around the printing process, due to a temporary state of separation between the roller and the printing plate, the ink transfer water film barrier effect of the change, too much water will make significant changes in printing ink;
5. After embossing the paper after, if absorb too much water, it appears Ruanmian weakness, lack of transportation process on a clear sound;
6. When too much water will hinder the normal coating of the ink, the ink accumulated on the roller, so that even though the ink roller ink is very thick, but the printing ink still seems light hair;
7. Water is too large, the downtime is longer, the layout of water evaporation loss is still difficult;
8. When too much water forum, part of blotting sheets seams and edges of a large blank area imprinting, prone to the phenomenon of wave-empty
All in all, if you still have any questions of offset priting inks, pls connect us by visit our website: http://www.du-shi.cn/eng or email us with sublimationoffset@aliyun.com
