Often when you download .pdfs of books from Archive.org, you find that the printed text has been rendered grey. I am seeking a program runnable on 64-bit Windows 7 Pro that can print such a .pdf with all greys (and colours) going to black. Note that this is not the same as greyscale printing, which renders light colours such as yellow as grey. What I need is basically to increase the contrast by a lot.
As far as I know, this cannot be done either with PDF Xchange Viewer (version 2 build 54) or Adobe Acrobat Pro (2018.11.20058).
When I say "print", I mean that "all colours go to black" is the outcome I ultimately require in the printed hardcopy. So printing to an electronic file using PDF Creator or Adobe PDF would be fine, since I could then print in the usual way from that file. So would altering the .pdf so that it saves as the high-contrast version required. In fact either of these methods would be preferable to a route that prints in high contrast out of the printer but does not leave me with a high-contrast electronic file. But so long as I can get the high-contrast file out of the printer I will be happy.