Coated paper
Coated paper has a smoother surface that keeps ink nearer the top of the sheet.
It usually gives sharper images, stronger colour and a cleaner finish, making it ideal for brochures, leaflets, menus and photographic work.
Uncoated paper
Uncoated paper absorbs more ink and has a softer, more natural feel.
It is often preferred for stationery, books, forms, notepads, invitations and anything that needs to be written on.
Which is better?
Neither is better in every situation. They simply create different results.
The best choice depends on the purpose of the item and the character you want it to have.
Colour changes with the sheet
The same ink can appear brighter on coated paper and softer on uncoated paper. This is why Pantone publish separate coated and uncoated guides.