Digital BW, The Print

13x19 prints, about 13" into the 19 inches, I get big blobs of ink on 
the left hand side of the print. This just started happening today.  
Have been using system for about 3 weeks with no problem.

Does not happen on 8-1/2 x 11 paper

Any ideas?  Can send a scan of what it looks like if need be.

Thanks -- very disappointed at this juncture as I have gotten some 
wonderfull prints out of this system and now feel lost.

Michael