VDT | Variable Dot Technology
VDT is a functionality of the piezo print head that enables the creation of ink drops of different sizes, allowing smoother gradations and higher detail. The larger drops are a combination of small drops jetted with different speeds; when reaching the media, they have merged into one larger drop.
The advantage of VDT explained
With different dot sizes, a much smoother gradation of colour tones is achieved, improving the overall image quality. In addition, smaller details can be printed further increasing the image quality.
The production of gradations with a single dot size will result in a less smooth and more grainy effect.