Podle tohoto kontextu by to mohla být ostrosť bariev:

Uncoated paper

Plain paper which is not coated. Uncoated paper is typically rougher feeling than any of the coated stocks. This can be used as an effect when considering a print project. Ink lift is not as strong from uncoated papers as any of the coated ones which means images will not appear as defined as when they are printed onto a coated stock. Using uncoated stock is a good idea if you need to write onto the printed item you are producing (e.g. a form, business reply card etc). It is much easier to write on this type of paper.

Lelský papier nevstrebáva atrament tak dobre, ako drsný papier, čím sa atrament neroztečie a výsledkom je vysoká ostrosť (nie len farieb).