ABSTRACT
Ink-jet printing refers to any system in which droplets of ink are ejected onto a printing surface to form characters, codes, or other graphic patterns. The ink-jet concept dates from the 1860s, when Lord Kelvin developed the first practical jet for pattern generation. Early commercialization was in the oscillographic recorder area in the 1950s. Since the 1960s, ink-jet developments have focused on computer output, with major contributions made by such scientists as Hellmuth Hertz in Europe (Lund Institute, Sweden) and Richard Sweet (Stanford University) and Steven Zoltan (Brush Instruments) in the United States.
