Patent ID: 8415022

Claim:
A coated paper for offset printing comprising at least on one side a top coating layer, said top coating layer comprising a pigment part, the 100 parts in dry weight thereof comprising 5-40 parts in dry weight of a fine particulate ground calcium carbonate with surface and internal structure modification as a result of treatment with one or more medium to strong H 3 O + ion providers and optionally with additional treatment of gaseous carbon dioxide, 30-80 parts in dry weight of a further fine particulate pigment selected from the group consisting of: fine particulate carbonate, kaoline, talcum, gypsum, titanium dioxide, barium sulphate, alumina tri-hydroxide, satin white, plastic pigment, or a mixture thereof, a binder part of 2-20 parts in dry weight of binder, and additives in the range of 0-8 parts in dry weight.