Yesterday, September 29, Harvard University Bookstore launched a new invention claimed to be more expected after the coffee machine, it can print a 300P book in 4 minutes, steaming to your hands, ha ha, I say a bit exaggerated, coffee can be steaming, the book may also be steaming, but it is unlikely to be visible. Yeah, it's a book printer. Bookshops print books? It's weird. What if restaurants started growing food? Therefore, sometimes it is correct to not allow association, other bookstores can not have all the books, if customers want to buy books that the bookstore does not have, or want to print books that they have not been published through the publishing channel, have such a book printer will be very popular? The answer, of course, is yes. In fact, the machine, provided by On Demand Books, can print two million Books from Google Books, and it can print other e-books on the Web.