I didn't know this existed until today, when I found the above photo from DGJones on Flickr. Much like the modern digital camera/memory card printer, this was a built in function in special television models that allowed for the user to print off a teletext screen, presumably around photo size.
Can't find much info about this online but it would have been useful for printing out information about holidays or lottery numbers for purposes of archiving. Seems as though the technology never took off, as I have never come across one of these before. I want one though.
If I could somehow get hold of a series of these printouts it would be a good resource point for the print aspect of this project, or at least an idea for a layout.