Multi-gray output
Epson's unique VSDT (Variable Ink Drop Technology), smallest ink drop is 2.5PL (Note: PL means picoliter, unit of volume measurement, equivalent to "10 minus 15 times" cubic meter, that is, 1000 cubic microns), free control ejected ink droplet size, thereby reducing graininess of picture, presenting more picture details, smooth color transition, and high saturation.