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403Re: [PPLetterpress] Re: Printing troubles?

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  • Katie Harper
    Mar 2, 2002
      Gerald: Thanks for your tips. I did in fact try moistening the paper and got
      a bit better blacks, but the results were not enough of an improvement to
      justify the hassle.

      This brings up a point: some say that humidity in the shop (or lack thereof)
      is important; others say it makes no difference. Does anyone out there have
      an opinion on that? On the day I was printing the above job, there was low
      humidity (22%). The temp I can keep about 68-70°, but have not yet found a
      way to control humidity, other than buying one of those small room
      humidifiers. Is it worth it?

      Katie Harper
      Ars Brevis Press
      Cincinnati, OH

      > From: "bielerpr" <bieler@...>
      > Reply-To: PPLetterpress@yahoogroups.com
      > Date: Sat, 02 Mar 2002 02:26:19 -0000
      > To: PPLetterpress@yahoogroups.com
      > Subject: [PPLetterpress] Re: Printing troubles?
      >> I have been using a newly acquired Hostmann-Steinberg black from NA
      >> Graphics. So far, results have been good, but on the C&P, I have noticed
      >> that blacks are not always completely as solid as they should be, as though
      >> the ink is not flowing well into the paper fibers. Would the setswell
      >> compound help? Someone else recommended plate oil, and I think stand oil was
      >> also mentioned. Anyone have experience with any of these additives? Do they
      >> tend to dilute the color at all?
      >> Katie
      > Dear Katie
      > I would not use the Setswell compound for anything other than large
      > solids that are giving you trouble. You would not want to use it for
      > type. It will muck up the works.
      > If the blacks are not as "solid" as you would like would dampening
      > the paper or increasing the impression a bit help? If it is just that
      > they are not of the color that you want, maybe you could add a tad of
      > red to the black? To get a really deep black on say a large initial,
      > I will sometimes print first in red and then print over this in
      > black. Yes, a double run. But I use Vandercooks and they are quite
      > precise in register.
      > Best not to put any additive in an ink, though having said that, it
      > seems that you always find you have to. To loosen an ink I find that
      > better than the traditional cutting varnish, is to find another black
      > of the same manufacture and similar brand but one that has less
      > viscosity, and use that as a mix. You can alter the resultant color
      > with a bit of red or blue to get nearer the finished black that
      > appeals to you.
      > All best
      > Gerald
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