Blotting Paper
From George Eastman House : Notes On Photographs
There were many uses for absorbent paper in the darkroom. It was important that such paper be manufactured with chemically clean linters and without sizing. Often called bibulous paper in the old manuals, blotting paper was used in great quantities to produce calotype and wax-paper negatives and to dry prints. Blotting paper of unknown quality could be made safe by treating it with boiling water that contained sodium carbonate and then washing it thoroughly.[1]
- ↑ Osterman, Mark. 2007. Blotting Paper. In The Focal Encyclopedia of Photography: Digital Imaging, Theory and Applications, History, and Science, ed. Michael R. Peres, 47, Focal Press.