Newsprint was She first secondary-fibre based paper grade on the market RC papers - office and printing - were developed next, but they entailed two main problems from the very beginning: 1. brightness & chromaticity co-ordinates and 2. stickies. If deinked stock is to be used in higher-grade graphic papers, high technological standards of pulp and water treatment must be achieved. For this purpose, water treatment is an absolute necessity in closed circuits - if an opening of the circuit for contraries removal is rejected as a technological setback by decades.