The cost of the ink required to print into a single print is minimal, but the quality of the printed product is greatly affected.
Just as choosing the right paper and printing method, the choice of ink is equally important. There is no need for strict selection of ink for the printing of general book publications, but the choice of ink is different under special circumstances. For example, good quality ink should be used for printing famous paintings, highly standard documentary pictures (such as maps), expensive product samples, and advertisements.
Good ink should have the following advantages:
1 The pigment particles are smooth and smooth, so that the ink layer will not reduce the concentration of the color when the ink layer is extremely thin.
2 The color of the four-color ink should be correct and have a certain degree of transparency, so that the color printing effect of the printed product is correct and clear.
3 In the air, sunlight and ordinary lighting, there should be no discoloration or discoloration for a certain period of time.
4 can be mixed with other inks of the same type, after printing will not degenerate, discoloration or fading.
Special-purpose prints should use suitable printing inks such as:
For packaging of foods, cosmetics, children's toys, baby products, etc., lead-free ink should be used to avoid poisoning.
Calendars, celebrity portraits, famous wall paintings, wallpapers, etc., should be light-fast, and can be exposed to the air and strong light will not fade or yellow.
When printing cloth or clothes, some inks should be used that still follow the nature of the finished product after printing. For example, when printing fabrics or clothing, most of the ink is used as ink raw materials.
The printing ink for containers or packaging products should have features that are not easy to wear and strongly adhere to the printing surface. Such as glass supplies, plastic supplies.
Printed advertising posters, slogans, and other notable words or patterns can be used to reflect the characteristics of fluorescent ink.
In the packaging of cosmetics, internal clothing, children's patterns or ladies' supplies, the ink should not only contain unpleasant odors, but can even be added to the ink before printing. It is generally called aroma printing.
The characters and digital characters printed on the computer tray are printed with ink containing magnetic powder. This is a special purpose printing ink. The magnetic powder containing the magnetic powder or the number character is matched with the magnetic force in the computer and the computer automatically “checks†it. The data on the form will be processed.