That's a fair use case... as long as the exact DPI is adhered to along with all the appropriate colour hinting.
The alternative is to just embed the font in the document. This has been a standard capability of PDFs for quote some time now.
I've been on the receiving of tender responses rendered as images (instant very high negative scoring) as well as non-scanned manuals (largely unusable when one cannot search the text).
Biting the hand that feeds IT
