FotoDave@aol.com
Date: 01/27/01-02:33:20 PM Z
<< A big consideration concerning dots is that the dots will be spaced
further apart in order to print lighter tones. This has been addressed
by the use of quad tone inks and adjusted software driver for the
printer by Cone. >>
That's true, and as I have mentioned in the past, the solution is not a new
one. It is the exact same concept of duotone where one achieve the same
density with more dots but ink with lesser density. The difference is that
the application was in offset printing before but now is in inkjet printing
as well.
But for us, unless the inkjet printed positive is our desired final result,
one does not have to use multitone to print your negative. If your process
has a long tonal range, then it is capable of giving you dark density and
light density. You can create two negatives, one that emphasizes the shadow,
and the other other one emphasized higlights (i.e. more dots and more
separation). Adjust your contrast and exposure so that the highlight will be
printed using light density. This is the single coat, multiple negative /
multiple exposure system that has been discussed.
If the process used has short tonal range (like gum), the control would be
more sensitive to small change. However, one could easily achieve the same
result but using two negatives but print the highlight with a lighter
emulsion. This is the multiple coat, multiple negative approach.
Dave S
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