A laser-class printer that uses solid wax inks that are melted into a liquid before being used. Instead of jetting the ink onto the paper directly as inkjet printers do, solid ink printers jet the ...

$40). The ForeverPen uses a unique solid ink that can write on virtually any surface, including paper, plastic, and even wood. You can even write upside down or underwater without smudging.

An curved arrow pointing right. Traditional Japanese calligraphy ink, referred to as sumi ink, comes in a solid form. It takes at least four years of production before these ink sticks can be sold ...