Redesign of Magnetostrictive Inkjet PrintHead

摘要

This paper presents the redesign of the first magnetostrictive inkjet printhead (MagJet). The redesign includes the structural redesign and operational redesign. After compleing the process successfully, the redesigned MagJet is subjected to testing. The effect of backpressure from a commercial syringe pump is evident. The operating frequncy with backpressure reaches up to 1.5 kHz, although that without backpressure is 650 Hz. The droplet size at a frequncy of 800 Hz is about 53 sm, less than half of the nozzle size. It can be concluded that various drplets can be made by combining frequncy with a proper flow rate. Backpressure prevents the MagJet from air inclusion in the nozzle, so continuous ejection of the dropets are possible.