Sumitomo Uses New Nano Black Process for Tire Sidewall Lettering

Sumitomo Rubber Industries says it has developed a new design technique called Nano Black, which gives a deeper black coloring to the lettering, logos and patterns imprinted on the sidewalls of tires. The technique involves adding extremely fine ridges to the sidewall surface to inhibit light reflection, thereby producing a deeper shade of black than conventional hues.

Source: Tire Technology International