A printing device and a printer using the same are provided. The printer includes a body and the printing device installed therein. The printing device includes a shaft, an inkjet module disposed on the shaft, and a cleaning module disposed under the shaft. The inkjet module has a nozzle and at least one electromagnet around the nozzle. The cleaning module includes a scraper and a cap disposed aside of the scraper, wherein the cap is magnetic or has at least one magnet disposed therein. Whether the cap attracts the nozzle or the cap repels the nozzle is determined by the current applied to the electromagnet.