Electronic paper displays which can be rolled up have been developed by E Ink.
Xerox and E Ink are using different techniques to develop their electronic inks.
To help people understand how E Ink's technology works, the company compares the millions of microcapsules inside the ink to clear beach balls.
He added, "E Ink was done at an early time when a lot of these problems were not understood."
In 1997, this ink became the foundation for a start-up company, E Ink.
These devices are designed to read e-books, and use display technologies such as E Ink.
Two years later, E Ink partnered with Philips to develop and market the technology.
In the case of E Ink, for instance, images are created by microcapsules suspended in a clear liquid plastic.
E Ink has already received financial backing from communications giant Motorola.
The Reader employs a remarkable new display technology from a company called E Ink.