Ask this question of the various members of a coated mill's staff and you'll be surprised at the variety of answers. Suppose you were sitting in the mill's conference room the day after a major customer rejected his last shipment because the printed gloss was so poor. The printing pressman had changed to a high varnish content ink but still the gloss wasn't what the final customer expected. The paper was felt to be at fault and was being rejected. Now what? How do you pinpoint the cause of the problem?
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