How can I rasterize all of the text in a PDF?

You know when you have a pdf, which is a scan of a document and it's a really huge file, because it just stores the picture of the scanned document? And there are OCR tools which can help you to make a proper document which just stores the text? Well, I need the reverse of that! Let's say I have a perfect pdf document generated with pdflatex and I need to turn it into such a "huge" pdf, which looks exactly the same when printed on paper (with a certain dpi value), but is just a picture of the original. My initial idea is to turn the pdf into a series of JPGs and then back into a PDF, but perhaps there is some canonical way for that? --- In case you wonder why I would want to do such a thing: I'm currently stuck with a network printer, which is not maintained by me, and which randomly drops characters in printed files! So until someone figures out what's wrong there, I want this as workaround.