If you are consistently needing to pad the roller tracks, it sounds as if
there may be a problem with the relative sizes of your rollers and your
trucks. There are two schools of thought on this: some people advocate
rollers and trucks of exactly the same diameter, other prefer trucks which
are just slightly (1/16") smaller than the rollers. The Morgan adjustable
trucks can solve this problem as long as they will fit on your press. (They
won't on my Curtiss and Mitchell.)
If you are having problems with roller pressure, let me suggest that you try
roller bearers. These are wide strips of metal or wood rule locked into
your chase along each side. The rollers will move on these instead of the
trucks on the tracks. I find that I get better inking with roller bearers
than relying on the trucks.
Roller pressure adjustments should result in consistent over or under
inking. Irregularities sound like problems with your rollers. If you have
two rollers that have flat spots you can get light spots that move around or
disappear because the flat spots on the rollers will not always be in synch
and the light spot will appear only when both rollers have a flat spot in
the same place in that inking cycle.
Keep us posted as you work toward a solution. I for one would be happy
learn anything there is to know about a subject that has been a continual
source of frustration.
From: Carole Aldrich [mailto:carolealdrich@...
Sent: Friday, October 10, 2003 12:03 PM
Subject: [PPLetterpress] Building up roller tracks
I was having some difficulty getting a good impression on my C&P Pilot
Kyle of Boxcar press suggested that I needed to build up the roller tracks.
improved printing. However, it seems that using tape to do this would
constant fiddling as the tape compresses over time. Does anyone have a more
I also had a problem with uneven inking. I would be printing successfully
start to experience lighter areas. Either left, right or center of my plate.
It was not
consistent. I took that as I sign that I needed to add more ink. In spite of
thought was careful reinking, I would get another light spot which would not
to any adjustments. I kept using makeready sheets during these adjustments
from using my "good" paper. If I raised the plate with a tiny piece of thin
would ink too much. If I took the paper away, too little. Ditto for
adjustments to my
tape on the roller tracks. Adding a piece was too much, without it, too
like there was constant fiddling throughout the print run.
Is this usual, or do I need to be doing something differently.
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