Nowadays, quality of graphic reproduction is developing very fast and with quality grows a need for sofisticated demand quality controling in different fases of graphic production. In this labour it is described spectrophotometric method of measurment reflection visible part of spectre on different types and grammage of paper. We processed influence of visible part of spectre because visible part is most relevant for our experience of making picture after interaction of light with a ground. With reflection we can connect opacity, Y values and brightness. All of them are parameters which we are connecting in sense of surface characteristic printing grounds and influence of different additions in grounds. In labour it is described measuring and comparing of this stated optical dimensions throught one paper sheet and throught few paper sheets, and then we observed effect in dependence of characteristic of paper and amount of paper sheets. We made laboratory examination of reflection on two basic types of paper, Garda gloss and Garda matt. We were measuring with X-rite spectrophotometer which measures in visible part of spectre. We measured on different grammage of paper stating with 300, 250, 200, 170, 150, 135, 100 and 90 grammes/m2. For each type and grammage of paper we were doing measurment separatly on black and white ground. In the end we stored and recorded all datas in tables and draw graphics so we could easier visualy see differences between reflections which are very small and difficle to see.