Printing device

The present utility model provides a printing device to print on a substrate mounted with a plurality of electronic elements. The printing device includes a metallic plate and a scrapper. The metallic plate includes a first surface and a second surface opposite to the first surface. The first surface used to press close to the substrate is faced to a surface of the substrate, in which a plurality of blind holes are disposed on the first surface. These blind holes are aligned to the electronic elements, and a recess disposed on the second surface is used to contain an adhesive. A scrapped end of the scrapper can extend into the recess and perform a printing process by moving in the recess. The metallic plate further includes at least one through holes, and the adhesive is scrapped to the surface of the substrate by the scrapped end through the through holes.