Inverse-based feedforward control for an inkjet printhead

Inkjet is an important technology in document printing and many new industrial applications. As inkjet developments are moving towards higher productivity and quality, it is required to achieve droplets which are small and fired at a high jetting frequency. Inkjet printers are now widely used to form conductive traces for circuits, as well as color filters in LCD and plasma displays. This makes the printing quality an important issue. In this paper, a model-based and data-based inverse feedforward control method is proposed to improve the printing quality of the piezoelectric inkjet printer. The proposed inverse input is applied to the inkjet printhead and the system performance is investigated.