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This method provides a measure of diffuse opacity (paper backing) of white and near-white papers, previously known as printing opacity.The method may be employed for colored papers on condition that their reflectance (paper backing) is greater than 20% and their diffuse opacity (paper backing) is greater than 45% (1).The method is not suitable for highly transparent papers such as glassine.This method employs d/0 geometry, illuminant C, and paper backing whereas TAPPI T 425 Opacity of Paper employs 15/d geometry, illuminant A, both 89% reflectance backing and paper backing.

Product Details

Published: 01/01/2002