The pattern inkjet printing method of pulp molded products uses the principle of charged ink particles deflected by a high-voltage electric field to print pattern characters and numbers on the surface of various pulp molded products. It is a high-tech product integrating mechatronics. .

At present, the more successful digital inkjet printers are UV inkjet printers. UV inkjet printers are also called piezoelectric inkjet printers. On the integrated nozzle, hundreds or more piezoelectric crystals are used to control the nozzle plate. Through the processing of the CPU, a series of electrical signals are output to each piezoelectric crystal through the drive board, and the piezoelectric crystal is deformed, so that the ink is ejected from the nozzle and falls on the surface of the moving object, forming a Dot matrix to form text, numbers or graphics. Then, the piezoelectric crystal returns to its original shape, and new ink enters the nozzle due to the surface tension of the ink. Because the density of ink dots per square centimeter is very high, the application of piezoelectric technology can print high-quality text, complex logos and barcodes and other information, and connect to the database for variable data printing. Adding variable data to the designated position can be printed together with the pattern. While variable data printing can realize variable data, the appearance color of the data can also be changed, and complex rainbow color printing can be realized without repeating colors. print.