Patent ID: 8746872

Claim:
A method for an ultraviolet (UV) inkjet printer to generate an irregular transparent matte particle surface, wherein an inkjet module of the UV inkjet printer is disposed above a substrate to move back and forth for pattern printing, and two sides of the inkjet module are respectively disposed with a UV light for curing inks sprayed by the inkjet module; the method comprising: (a) enabling the inkjet module to print a pattern on the substrate; (b) after the pattern is printed, enabling the inkjet module to perform first transparent ink spraying on an entire region of the pattern, and turning on lateral UV lights of the inkjet module during said first transparent ink spraying to immediately cure the transparent ink sprayed on the pattern, thereby forming a first transparent color layer on the pattern; (c) after the first transparent ink spraying, enabling the inkjet module to perform second transparent ink spraying on an entire region of the first transparent color layer with the UV lights off; (d) after the second transparent ink spraying, with inkjet spraying stopped, enabling the inkjet module to move back and forth above the substrate with the lateral UV lights on, so as to cure the transparent ink sprayed on the first transparent color layer, thereby forming a second transparent color layer having irregular transparent matte particles over the entire region of the first transparent color layer.