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Harman Gloss FB Al + Humidity = Edge Curl & Head Strikes

2009-06-23 by Doug Fisher

I would appreciate any thoughts on methods to remove the slight curl at the
edges of Harman Gloss FB Al before putting it in the printer.  I have been
doing some printing for the first time in a while with my R2400 and one
thing that has changed is that the humidity level is quite a bit higher
(Atlanta finally had a wet spring and the multi-year drought has been
broken).  

The higher humidity (about 45% in the air-conditioned room with the printer)
has caused the Harman paper to curl at the edges on all four sides (both old
stock and freshly opened stock).  The curl along the edge is pretty small in
width but fairly pronounced.  It is just enough that I am getting head
strikes at one of the very top corners at the start of the printed page
(along the side) and sometimes at the very bottom of the page at one corner
(also along the sides).  I left the paper out over night see if it would
flatten any after acclimating to the room but I didn't have any luck.  The
platen is set for thin papers.

Any advice on what to do or not to do to remove the curl without damaging
the coating on the surface of the paper would be appreciated.  If it were a
large gentle curve all the way across the paper, a reverse roll would
probably do the trick.  Since the curl is just at the edges and the coated
surface is pretty delicate, I have been trying to bend it flat just using a
cotton gloved hand.  Hopefully someone has a better method!

Thanks in advance,

Doug
---
BetterScanning.com - Innovative Accessories for Better Film Scanning
http://www.BetterScanning.com/

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