Model-Free Feedforward Control of Inkjet Printhead’

Inkjet printers are non-impact printers which print text and images by spraying tiny droplets of liquid ink onto paper. Besides the well known small inkjet printers for home and office, there is a market for professional inkjet printers. Inkjet printers are used to form conductive traces for cir cuits, and color filters in LCD and plasma displays. That makes the printing quality is an important issue. Currently, most inkjet printers use either thermal inkjet or piezoelectric inkjet technology. Most commercial and industrial inkjet printers use a piezoelectric material in an ink-filled chamber behind each nozzle instead of a heating element. When a voltage is applied, the piezoelectric material changes shape or size, which generates a pressure pulse in the fluid forcing a droplet of ink from the nozzle. In my project the piezo electric inkjet printer is considered.