Can't print PDF: ERROR: undefined OFFENDING COMMAND: Pro-Italic-380

Hi, I scanned in a book and then used Adobe Acrobat Pro to OCR everything.  When I try to print out the resulting PDF, a single page emerges from our Sharp MX-6071 copier that reads

ERROR: undefined OFFENDING COMMAND: Pro-Italic-380

I get the same error printing to an HP M554.  From my limited understanding, I'm guessing that the OCR conversion used a font that isn't available on either printer.  I am not sure how to remedy this problem.  I tried exporting to encapsulated postscript, but that created a separate file for each page, which is rather unwieldy.

Thank you for your input.