ROKET288 According to the company, a single sheet of paper can be reused 1,000 times before it needs to be replaced. Each sheet of paper comes embedded with leuco dyes, which change color with temperature -- colored when cool and clear when hot. The PrePeat printer, then, heats and cools the paper to first erase an image and then create a new image in its place. Once the USPTO decides that a technology is no longer a threat, it can publish the patent and pave the way for commercialization. Up to eight individually controlled cars can be used at the same time with the digital slot racing system. Rajasthan - president of the C.P. This so-called "black budget" has grown tremendously since the Sept.|Sony Alpha A99