What about a
PDF that I need to use some distance from my computer,
but is not printable?
In what situation would a PDF not be printable? I don't
get your
point.
I didn't write that, but I did, not so very long ago, run into a PDF
that was not printable. Upon converting to PostScript (my printer
doesn't grok PDF), it included a call to colorimage or whatever the
operator is for rendering colour images, and my printer errored out on
it.
Of course, this didn't make it totally impossible to print. I could
have coaxed ghostscript into rendering it into a ppm file, massaged it
into pgm or pbm, and then printed that. But it certainly did raise the
effort bar far enough that I either abandoned the task or used other
approaches, I can't recall which. (There is very little that is truly
impossible in computers with application of sufficient effort,
ingenuity, and patience....)
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