An electrochromic molecular colorant and a plurality of uses as an erasably writeable medium. Multitudinous types of substrates, such as paper, are adaptable for receiving a coating of the colorant. Electrical fringe field or through fields are used to transform targeted pixel molecules between a first,...http://www.google.se/patents/US6876570?utm_source=gb-gplus-sharePatent US6876570 - Field addressable rewritable media
