🚀 go-pugleaf

I have encountered a problem with the ImageWriterIIs in our MacLabs on
campus...smudged printouts.  Our first thought was the reinked ribbons
that we are using were causing the problem but the ribbons work fine in
our new ImageWriterIIs (platnum - 3 months old, the others that smudge
are beige - 18 months old).  We replaced all the old aluminum foil type
printhead shields with the new printhead sheild, we clean the printhead
and the printhead sheild to get all the crud of them and of course we
adjust the distance of the printhead from the paper (the smudging stops
when the pins no longer meet the paper - no smudging , no printout).
Our last thought is physical wear on the printer but what part is
wearing out?  If you have any suggestions or comments, please let me
know.

Thanks in advance,
Mike McCann