Tone Value Increase Target Derivation for Uncoated Papers
Deriving uncoated paper TVI targets demands separating optical light scattering from capillary ink absorption using M1 spectral data to set inverse RIP curves.
Ink Mileage Economics
Coverage Yield
Material consumption tracking calculates print area produced per mass unit of ink formulation. Liquid and paste ink formulations yield varying surface area coverages based on pigment concentration and vehicle fluid transfer efficiency. Calculating ink mileage economics allows packaging converters to estimate job costs and optimize ink film thickness targets.
Pressroom managers monitor ink consumption across high-volume packaging runs to control unit material costs.
Pigment Efficiency
Substrate porosity directly influences ink absorption rates and volume required to reach specified optical density. Highly porous uncoated paper absorbs liquid vehicle quickly, requiring higher ink film thickness to achieve target color saturation. Smooth coated paperboard holds ink pigments on the surface, reducing total ink volume needed per square metre.
Pigment strength and particle dispersion quality determine color strength per dry film gram. Ink mileage economics depends on maintaining precise wet film thickness without exceeding minimum density specifications. Gravure and flexographic processes measure ink consumption in grams per square metre of printed substrate area.
Optimizing cell volumes in anilox rollers maximizes color density while minimizing liquid ink consumption.
Substrate Limit
Rough recycled board stocks absorb excessive ink vehicle, sharply reducing calculated mileage yields. Highly absorbent substrates require sealant primers to prevent color sinking and unpredictable ink consumption spikes. Extraneous ink vehicle absorption distorts cost projections on long packaging runs.