The ink jet mechanism is formed on a thin silicon chip (17.6
16mm) using silicon micro machining technology. It is provided with piezo elements.
With voltage applied to the piezo elements, the shape of the elements changes as shown in the diagram, and ink particles are ejected from the tip of the nozzle.
These particles are very small and fast, and draw a series of very small dots of about 0.3mm diameter on the chart paper. These small dots are combined together to form characters and trace lines for clear visible recording.