Paper opacity

Opacity This characteristic refers to the absence of show-through when printed text or images appear on one side of the paper while text or images are printed on the other side. High-quality paper exhibits excellent opacity, enabling readers to focus solely on the content within the page without experiencing eye strain caused by faintly visible images from the opposite side. Factors affecting opacity include: i. Paper thickness; ii. Coating presence; iii. Surface smoothness or roughness; iv. Plant fiber content. Testing involves measuring light transmission through the paper, expressed as a percentage.