White is set to print over the entire substrate before the image is printed. Areas with no image will be white and not show the original substrate colour.
White is set to print over the entire substrate after the image is printed in reverse. This is done on transparent substrates so the image can be viewed from the other side, through the substrate. Areas with no image will appear white.
White is set to print either underlayer or overprint. Any areas can be masked out so the original substrate shows through. Images can also be masked so no white prints on or under them for effect.
White can be set to print at various densities. We can control exactly how the white is placed. It can be placed as a solid percentage like 20% (similar to 80% black on a white substrate) allowing the substrate to show through it. We can also print it as a gradient from one
percentage to another, like on photographic images controlling what areas get white ink.
White can be used on its own without the coloured inks at all. If you have a dark substrate we can print a greyscale image using white ink instead of black. Logos can be imaged onto dark or textured surfaces.
The samples to the left show how the different layers are printed in order of colour vs white ink, on the right is how the finished product will look.