lampblack
A finely divided, bulky, black soot, at one time
the most important black pigment used in the
manufacture of printing inks. It is produced by
the imperfect combustion of pitch resin or tung
oil, or fatty substances, such as naphthalene, in
a vessel within a tent made of paper or sheepskin.
The smoke is deposited on the inside of the tent
which is then beaten to cause the soot to fall
off. The soot is then heated several times to a
very high temperature in a metal container having
a small opening in the top, through which the
impurities escape. See also:CARBONACEOUS INKS ;
CHINESE INK . (156 , 235 )
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