It uses a thick, oil-based ink that is dispersed by a small ball in a socket at the head of the pen. The cartridge uses gravity to force ink down the reservoir. A fountain pen uses a nib in the ...

A muffler, spectacles, untucked half-shirt and a blue-cap ball pen sticking out of the pocket completed the educated aam aadmi look of Arvind Kejriwal. The pen was one of the highlights of his ...

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 ...