Xerox Disappearing Ink Paper

Xerox's disappearing ink via cnet

The paper is coated with photosensitive chemicals that turn dark when hit with UV light.

Users don't have to wait for the paper to fade- by running it through the special printer made for this paper, the printer will erase the old image before putting the new one on. The special paper can be run through the printer roughly 100 times.

Xerox says that 44.5 percent of documents are printed for one-time use and 25 percent of all documents printed get recycled the same day.

It takes about 204,000 joules to make a sheet of paper, Shrader said. That's about the same amount of power required to run a 60-watt light bulb for an hour, he added. Recycling that same sheet of paper takes about 114,000 joules.
Printing a conventional 8x11.5 sheet of paper takes about 2,000 joules, he said.
Reusable paper takes a lot less effort. It only takes 1,000 joules to print an image on one of Xerox's reusable sheets of paper, and that's if you use the printer to erase the image. If you let the image fade naturally, it only takes about 100 joules to print.

After you've used it 100 times, I don't know if this special paper can be recycled or not.