ANSI/TAPPI T 519 OM:2017(R2022)
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Diffuse opacity of paper (d/0 paper backing)
Available format(s)
Hardcopy , PDF
Language(s)
English
Published date
10-20-2022
Diffuse opacity, expressed as a percentage, is given by the ratio of the diffuse luminous reflectance factor of a
single sheet with black backing (Y0) to that with a backing consisting of a pad of the same paper (Y∞), multiplied by 100, i.e., (100 × Y0/ Y∞).
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