Maybe it's just a Banner that's printed out each time (I've no experience with it, so I don't know if it's possible to get empty banners)...
Open PCC => Hardware => Printers (I've updated to the last config-center)
Then right-click your printer, select Properties >> Policies >> Banner
See if you selected one of that options??
Hmmm... I ran all the updates because there was no right-click. Nice change in PCC.
I don't have any banners selected.