papier au trait marron
- Domaine
-
- industrie papetière papier et carton
- Date
Terme :
- papier au trait marron n. m.
Traductions
-
anglais
Date :Définition
Sepia photo-copying papers are prepared by soaking thin translucent paper in a solution containing iron ammonium citrate, citric acid and silver nitrate, and are widely used for making copies from tracings. These copies, in white lines on a sepia background, may be used as negatives for making prints or ferro-prussiate papers, thereby producing copies in blue line on white ground.
Termes :
- sepia photo-copying paper
- brown line paper