creating target for litho prints
creating target for litho prints
- Subject: creating target for litho prints
- From: Stefan Ohlsson <email@hidden>
- Date: Sun, 17 Jan 2010 11:06:41 +0100
I'm trying to create a scanner profile for use in a large format
scanner. They will use it to scan old maps and big litho prints. I
have used a Hutch chart to make this profile. When I check this
profile the result is OK. But when we scan the maps they get a magenta
cast.
I've checked the scanner light's spectral distribution and it is quite
spiky. The scanner maker says that they use these fluorescent tubes
because of the high light output and that we have to slow down the
scanner if we would change the tubes to those with a more even
spectral distribution. As my customer will scan thousands of maps,
longer scanner times aren't acceptable.
I'm thinking of creating a scanner target with colour patches from
some discarded prints. Any ideas how to do this? How many patches do I
have to use to create an acceptable scanner profile?
Best
Stefan Ohlsson
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