The Paper Reference Guide can be located in one of two places.:
1) If you have installed the Users Guide, the Paper Reference Guide will be located at:
C:\Program Files\Canon\iPFPrinter\[printer model](i.e. iPF650, iPF750, etc.)\Support\paper_reference_guide.html
2) If you download the driver from our website and extracted (decompressed) it, the guide will be located at:
C:\Documents and Settings\[user]\My Documents\[driver name]\WebLink\US\US\paper_reference_guide.html