1. See: BLEED . 2.
The removal of color from a paper or paper pulp
due to the action of water or another liquid,
which dissolves the coloring matter. 3.
Discoloration of the surface of a paper due to the
migration of residual oils. 4. The tendency of
colored papers to stain contiguous leaves, usually
due to the presence of water or moisture of some
kind. 5. The diffusion of uncombined materials
from the interior of leather to the grain surface
where they may contaminate other materials or mar
the appearance of the leather. This usually occurs
at elevated temperatures and is commonly
designated as staining. (17 , 72 , 325 , 363 )