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Article Dans Une Revue Coatings Année : 2021

Impact of a Transparent Coating on the Reflectance of a Line Halftone Pattern

Résumé

Many prints are coated to increase their resistance or to enhance their appearance. Applying a smooth transparent layer on a print darkens and saturates its color, an easily observable effect which can be predicted in order to obtain better color management of coated surfaces and ink saving. A model was thus developed which describes the reflectance of a single-ink line halftone in optical contact with a transparent smooth coating. It is based on the peculiar way light diffuses inside the coating layer, a phenomenon called the “halo effect”. The model was compared to two experiments conducted at different scales where line halftones were coated with different coating thicknesses. The experiments enabled us to identify and measure the darkening effect caused by a coating layer, and validated the model.

Dates et versions

hal-03455687 , version 1 (29-11-2021)

Identifiants

Citer

Fanny Dailliez, Mathieu Hébert, Anne Blayo, Lionel Chagas, Thierry Fournel. Impact of a Transparent Coating on the Reflectance of a Line Halftone Pattern. Coatings, 2021, 11 (12), pp.1465. ⟨10.3390/coatings11121465⟩. ⟨hal-03455687⟩
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