A printing device includes a main body and a plurality of nozzle units on a lower portion of the main body, a plurality of accommodation grooves within the main body and configured to contain a printing material, and a plurality of slits in each nozzle unit and each slit connected to an accommodation groove, so as to coat the printing material onto a printing object. Since the printing device includes a plurality of nozzle units that can individually control the amount of printing material flowing out of the printing device, the amount of printing material can be easily controlled and regulated. A method of using the printing device includes coating a printing roll with the printing material.