METHOD AND APPARATUS FOR CONTROLLING FORMATION OF TWO-COLOURBALLS FOR A TWISTING BALL DISPLAY

摘要

An apparatus for fabricating bichromal balls includes a means for fabricating droplets from electrically conductive hardenable liquids. The liquids have different colors. A forward end of the hardenable liquids becomes unstable and breaks up into the droplets. Each droplet includes hemispheres of different colors. An RF signal generator produces electrical pulses which increase the instability of the forward end of the hardenable liquids. A capacitance in the conductive liquids causes current to flow from the signal generator to the hardenable liquids. A diameter of the droplets is reduced to form substantially spherical balls. Each of the balls includes hemispheres of different colors. The bichromal balls are collected.