I marked when print same calendar in korganizer with winkde 4.10 and with kde 4.10 (OpenSuse 12.3) the results are significantly different. In OpenSuse the size of the event font is bigger then under with winkde. But there no GUI (or other ways) to define font family or font size of events (task) for printing calendar. Reproducible: Always
*** This bug has been marked as a duplicate of bug 217225 ***
I interpret this as a wish for a way to configure print-out fonts, not a bug report about fonts used in the situation described in bug 217225.