[PrintOwners] Work and Turn

[Jeff Daghir]

Depends on your press, ink, fountain solution, operator skill, etc.
We do work & turns all the time, frequently with with no time in
between running the front and running the back. But we have a hot air
dryer and I think the infeed roller configuration on our Hamada is
just the opposite of that on your Ryobi - we have a steel roller on
bottom and a rubber roller on top. I suspect having a rubber roller
run against wet ink would be more prone to problems with offset &
smearing. I know we do often have a problem with multi-pass work. The
first pass has to be pretty dry before we can run it through again for
the second pass. But if we have have a heavy coverage 2 sided job and
we're concerned about smearing on a work & turn we would normally run
it sheetwise and not bother with trying to save a few plates & setup
time with a work & turn.


-- 
Jeff Daghir
MPS Printing, Inc.
"The Ink & Paper People"
Madison, IN
www.mpsprinting.com
jeff_daghir at mpsprinting.com




Borzou:
> On a simple two color job (very light coverage, business cards), how long do
> you have to wait to turn and re-run a work and turn job?  Our pressmans
> waits up to an hour, and then still usually has some smudging and stuff and
> says he backed it up too soon.  We have a Ryobi 3302 w/crestline dampening
> system, use poly plates, and are printing on 100# cougar.  Should he be
> waiting longer?  Doesn't that kill the efficiency of the work and turn if
> the press is sitting idle?