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4. Opacity - The property of a substrate to resist passage of light. It is measured as the percentage of light absorbed by a sheet of paper.

5. Whiteness - The extent that paper diffusely reflects light of all wavelengths throughout the visible spectrum.

Please, answer the questions:

Please write how we can measure the guality of paper

What is the difference between printability and print guality?

Coated paper

Paper which is covered with a susoension of chi na ciav, pigment and adhesiyę. Various blades and rollers ensure the removal of surplus coating and impart a smooth surface.

Types of coated paper:

Cast coated gives the highest gloss surface of all coated papers and boards. Where do we use the cast coated paper?

Gloss coated is usually referred to as gloss art paper. Where do we use the gloss coated paper?

Matt coated is a coated paper with a matt finish. It has not passed through the supercalender and therefore the surface is not polished.

Where do we use the matt coated paper?

Niniejszy skrypt jest własnością intelektualną firmy The Challenge Group A. J. Molscy sp. j.oraz stanowi utwór w rozumieniu Ustawy o prawie autorskim i prawach pokrewnych (Dz.U.24/1994 poz 83 z późn.zm). Jakiekolwiek zastosowanie niniejszego utworu bez uprzedniej jednoznacznej i nie domniemanej pisemnej zgody The Challenge jest kradzieżą własności intelektualnej i stanowi czyn nieuczciwej konkurencji.