1. Modern printing equipment is developing in the direction of a multi-color inline printing, and thus the need for ink with rapid drying characteristics, that is, the ink in the transfer to the substrate material soon after the solid dry to meet the equipment to achieve high-speed multi-color continuous printing requirements.
2, modern printing requirements in the printer ink hopper and rubber rollers will not quickly dry solid crust, so as not to bring obstacles to normal printing, so as to better ensure the quality of printing and work efficiency.
3, the requirements of the ink can not be chemically reactive with the printing plate, can not have a corrosive effect on the printing plate, not to reduce the printing power of the printing plate.
4, the requirements of the ink color to maintain consistent, each batch of the same type of ink color correspondingly the same, firm film, after printing does not fade, after overprinting can produce light. In addition to transparent ink, each color ink should have a certain degree of covering power, and after overprinting, the overprinted ink should maintain the original basic color characteristics.
5. Printing ink must adapt to different types of printing methods and printing equipment, such as offset printing ink should have water-resistant, acid-resistant properties, gravure ink must be easy to volatilize, etc..
6. Printing ink must also have good anti-sticky characteristics, that is, the ink printed on top of the substrate, the instant is not easy to print over the bottom of the phenomenon, in order to ensure printing efficiency and quality.
7, modern printing requirements of ink fineness to be good, that is, the size of the pigment in the ink (including filler) particles and pigment particles distributed in the link material to maintain fine and uniform, so as to better prevent the production of printing defects such as paste plate.
In addition to the above-mentioned good characteristics, modern printing technology also requires ink with heat, light, acid, alkali and other properties, when the ink is transferred to the substrate, the ink layer should be bright and eye-catching, to achieve no discoloration, not fade and impervious to printing and other good use characteristics. And packaging printing products also require ink printed on the substrate, should have good friction resistance characteristics. These characteristics of the above requirements, is an important way to improve the efficiency of printing and product quality, is worth further research and development of ink development manufacturers, but also the printing plant is looking forward to solving the production problems.
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