Thanks for sharing this. I just set this up and tried it out on a couple documents, and the documents I got back looked to be the OCR layer only (i.e., the visible appearance of the document was changed). Do you know if there is a way to get a “normal” OCR’d document via Prizmo and Automator, with the visible part of the PDF appearing unchanged, but containing the invisible OCR layer?
EDIT: serves me right for not digging into this more before posting. There is a setting in the Automator workflow to use "PDF (Image + Searchable Text)