Random ink jet technology in the micro piezoelectric
The control of ink droplets in the inkjet process is divided into three stages: before inkjet operation, the piezoelectric element firstly shrinks slightly under the control of the signal; The element then generates a large extension, pushing the ink droplets out of the nozzle; As soon as the ink drops leave the nozzle, the element contracts again, cleanly pulling the ink surface away from the nozzle. In this way, the droplet level is precisely controlled, and each spray has the perfect shape and the right direction of flight.
The micro-piezoelectric inkjet system uses a transducer on a nozzle containing ink, which is controlled by a printed signal to control the ink jet. According to the working principle and arrangement structure of the transducer of micro-piezoelectric inkjet system, it can be divided into piezoelectric tube type, piezoelectric film type, piezoelectric thin section type and so on. Using the change of micro voltage to control the ink jet, not only avoids the shortcomings of hot bubble ink jet technology, but also can accurately control the direction and shape of ink jet.
The piezoelectric inkjet printer uses a piezoelectric crystal at the back of the tiny ink reservoir. Applying an electric current to a crystal causes it to spring inward. When the current is cut off, the crystal bounces back to its original position, shooting a tiny drop of ink through the nozzle. When the current is restored, the crystal stretches back, ready to spray the next drop of ink.