Coated paper have certain desired properties imparted by compounds or polymers. It gives the paper strength, smoothness, surface gloss, ink absorbency. Some compounds like Kaolinite, calcium carbonate, Bentonite, talc. are used to get the desired property.
Coated paper are typically used in printing industry particularly offset printing. Coatings may also have chemical coatings which will impart water resistance, wet strength or protection against ultra violet radiation. Art paper belongs to this category and calendars, posters, illustrative books are made out of coated paper