It marks the origin of the pen knife. Before 1850, the process for vulcanization of rubber had not been discovered, and the only way to correct a writing mistake was to scratch the ink off the ...

Opt for a pen with the wrong color ink, and you could trigger a fraud alert or nullify the check. Surprisingly, the wrong color ink can be black, says Jim Angleton, president of Aegis, a corporate ...

The Think Ink Pen is designed for people who fidget. It flexes with spring-like resistance, has a magnetic ball for sliding, and a spinner for your thumb to roll around. Think Ink was fully funded ...

Ballpoint pens distribute fast-drying ink without the ink drying in the pen itself. It uses a thick, oil-based ink that is dispersed by a small ball in a socket at the head of the pen. The ...