An e-reader looks like paper, so why shouldn’t you be able to print to it? Nishant Joshi got tired of uploading files to his Xteink, so he taught it to speak the same protocol as a network printer. But an uncompressed page can take 8.4 MB and the e-reader has just 400 KB of RAM. So he made it work by decoding, shrinking and converting each row to black and white as it arrived, writing straight into the display’s existing buffer. He got the first print working in an…