Jean-Claude Mougin (pdf) - Picto Benelux

7.2.6. Fine-tuning for contrast
The print contrast is controlled by adapting the proportions of #1 and #2
solutions according to following formulae:
very contrasty negative: density range 1.8
solution #1 .............................. 24 drops
solution #2 .............................. 0 drops
solution #3 .............................. 24 drops
contrasty negative: density range 1.5
solution #1 .............................. 20 drops
solution #2 .............................. 4 drops
solution #3 .............................. 24 drops
medium contrast negative: density range 1.35
solution #1 .............................. 16 drops
solution #2 .............................. 8 drops
solution #3 .............................. 24 drops
moderate contrast negative: density range 1.2
solution #1 .............................. 12 drops
solution #2 .............................. 12 drops
solution #3 .............................. 24 drops
low contrast negative: density range 1.05
solution #1 .............................. 0 drops
solution #2 .............................. 24 drops
solution #3 .............................. 24 drops
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