Heidelberger Druckmaschinen AG (Heidelberg) is now offering an optional new neon yellow spot color for its Versafire CV digital printing system. The toner glows under UV light, enabling it to attract more attention and add unexpected touches to printing applications.   The effect can also be used as a security feature, since the toner is almost impossible to copy. This makes it especially interesting for printing admission tickets or wristbands, for example, and other applications in the event...