In a long time not so far away from ours, printers would print things by dropping small dots of ink on a surface. As such, the more Dots Per Inch (DPI) you had, the better you would see an image's details. But be careful, if you use too many Dots Per Inch on a surface that cannot absorb as much as others could, anything you print will lose its fidelity and eventually smear. It is recommended to use 72 DPI for Screens, 150 DPI for low absorbing surfaces and 300 DPI for print to achieve the ideal image resolution.