INKJET PRINTING DEVICE AND NOZZLE FORMING METHOD

摘要

PURPOSE: An inkjet printing device and a nozzle forming method are provided to form a micro nozzle of a tapered form whose cross sectional area becomes smaller near an outlet. CONSTITUTION: An inkjet printing device comprises a flow path-forming board, a nozzle board(111), and an actuator. A pressure chamber is formed on the flow path forming board. The nozzle board is arranged under the flow path forming board and includes a nozzle(128) for discharging ink. The actuator provides a driving power for discharging the ink inside the pressure chamber through the nozzle. The nozzle board includes a first nozzle board(10) and a second nozzle board(20). A first nozzle unit(30) of a tapered form which is connected to the pressure chamber is formed on the first nozzle board. A second nozzle unit(40) of a tapered form which is connected to the first nozzle unit is formed on the second nozzle board.