at expo 2005, brother industries demonstrated a stationary-type of its imaging display, a projection technology that focuses light, of an intensity harmless to the eyes, onto the retina and then moves the light at high speed to create afterimages that give the user the impression of viewing a 16 square inch screen from a distance of 1 meter. the company developed the system by applying optical system technologies based on their laser printing technology, and piezoelectric technologies based on their ink-jet printing technology. it was developed in order to enable users to read documents such as operation manuals at the narrow spaces, or to be hands-free when they want to use both hands.