Learn about the issues in color control and proofing that
printers face when producing ceramic decals with process-color
separations. While the peak temperature of the kiln is
important, it is also important that the pigments themselves
reach a particular temperature. With heavy pieces of ware,
longer exposure to peak kiln temperatures may be necessary for
the ware and pigments to reach the correct temperature. If the
ware is not exposed to peak temperature for a sufficient amount
of time, the pigments in the decal may not mature, resulting in
a decal that is underfired. The color of an underfired decal
will tend to be dull and muddy, and the surface finish may lack
gloss. Conversely, if a decal is overfired (exposed to an
excessively high temperature), colors may burn out and lose
vibrancy. Differences of just 20-30°F (approximately 10-15°C)
from the optimal firing temperature recommended by the color
supplier can degrade final image quality. The atmosphere in the
kiln can also influence color, especially wi