Coated paper has a mineral or polymer-rich surface applied over its fibre base. That layer fills the natural valleys between fibres, producing a smoother sheet with more controlled ink absorption. The result is usually sharper detail, denser colour and a more even sheen than an equivalent uncoated grade.
How the coating changes print
On coated stock, ink vehicles remain closer to the surface while pigments form a defined image. Fine type, screened photographs and saturated brand colours therefore tend to reproduce cleanly. Gloss coatings emphasise contrast and colour depth; silk and matte finishes reduce reflection while retaining much of the same print definition.
The trade-off is that coated paper can feel less natural, may take longer to dry with some conventional inks and is not always the best surface for writing. Folding heavy coated sheets also requires attention to grain direction and scoring so that the printed surface does not crack.
Where it works well
Coated grades suit catalogues, brochures, premium magazines, presentation folders and cartons where image reproduction matters. Uncoated paper is often preferable for books, stationery, forms and tactile communications. Choose the finish by handling printed drawdowns under the light in which the piece will be used, not from an unprinted swatch alone.
