This question is one of the most asked in the digital printing world, therefore understanding the white under-base is a vital part of the process. Just as important is also to know how dtg printers work. Both DTG printers we work with must use a white underbase if white ink will be used in the design no matter. It works by shooting white ink and laying down a monochromatic white base, followed by the color round. This makes the images stand out more and have more vibrant hues.
What is white under-base?
With DTG and some large-scale printers, a white under-base is needed to make certain colors stand out on a particular colored garment. For example, if we try and print a blue ball on a red shirt without an under-base the blue will come out dark and brown-like in color, but if I apply a layer of white underneath the ball it will make the color stand out and make it a true blue. Considering we use water-based inks, the white ink is opaque and color inks are transparent making these almost see-through if no under-base is set underneath.
With the under-base also working as a primer it enhances and brings out color intensity. This under-base will be used only when the white color is needed in the design or to intensify the color of the print in some garments of our variety. The base will not be used in items that are white as it is not necessary.
Why is it important?
Once this method is understood and locked it is easier to select settings according to each garment. Knowing that a white under-base is used mainly as a primer it can be very beneficial to the production process and the design process also most importantly is to know when it will be used.