Some items that must be noted in the beginning of color printing:

Printing plant in the selected color must consider its color characteristics, such as light, penetration, such as lead, so as to avoid economic losses.

1, line color and white mix pink, such as 10% - 20% red and 90%-80% white, first pay attention to red light, because of printing ink manufacturers specify the color characteristics of a of the original ink lightfastness, but users will be two different color color, will reduce the red light.

2, in the printing market, common to many prints are purple ink, such as printing is not need to worry, such as some packaging to double-sided printing, special attention to purple penetration, because the average purple is a long time, printed on the back of the purple will penetrate into the other colors, so the user must consider the color of the color, the use of non penetration purple, to avoid loss, with 1 purple other colors are also permeable.

Two, printing before the purchase of film and printing after adhesion.

1, the purchase of film must be selected after film electronic processing, the surface tension of the film must reach 38 dynes (refer to table India), the best use of corona test pen test, due to the film in the production (the printing film) although the electronic processing, but the film processing effect will be extended with time exponentially fading the speed and storage, extinction of the environmental temperature, raw material, film thickness, storage environment of high temperature, dissipated fast, thin film containing additives such as lubricants, plasticizers, antistatic agents fade faster than that without additives, now many printing factories can self blowing, and electronic processing, but due to the failure to grasp the processing procedures, processing gap (between 1-2mm), voltage (1-1.5 kV), the printing is not easy to appear after exposing the decolorization, penetration, adhesion, cutting and difficult to use Open the phenomenon, this situation usually test stroke can be analyzed, so attention must be paid to the purchase of film or film at.

2, the printing factory test and inspection of printed matter, the adhesive force used in the machine, that is, while the printing side with adhesive tape measure, in fact, this is not scientific, because the ink is not completely dry, adhesion test is best done in 8 hours after printing.

Three, the printing process and printing should pay special attention to the environment temperature, humidity, etc., in order to avoid increasing costs and cause waste.

1, in the printing, ink solvent evaporation, air moisture infiltrated the printing ink, and ink containing a certain amount of alcohol solvent, having an affinity for water, such as printing plate area of small, less ink consumption, long time printing is very easy to cause the ink gel (incense paste) if not completely glue, can increase new Moline recovery, as soon as the run out of. Some users accustomed to printing, the ink in the ink tank, leaving the next day printing, so that it can easily absorb moisture, especially red ink, in order not to waste ink should be used to install and tighten the jar, a year in 3-6 months most prone to gelling and print without light Ze, in this period had better install dehumidifiers, exhaust fan, improve the printing environment.

2, after the printing of finished products on the stacking environment temperature, humidity is particularly sensitive, such as printed matter to customers hands, the early packaging has not been a problem, to the latter part of the anti sticky phenomenon, mainly due to the storage point of the product is high temperature, two is wet, the formation of ink in the resin softening, film additives in the oil ink.