probably one of two things...
either the paper is bending inwards towards the coating (and that can happen in dry environments) - and is catching the print head.
go for the paper first as it's easy to gently roll back the four corners and edges (don't dog ear the paper of course...) - just try to get it to lay flat. see if that makes a difference.
or the capping station or wiper blade is leaving gunk behind on the print head. had you been running a lot of cleanings on this printer?