us
Ce
(e
Behaviors of faded colors in the CIE v-w chromaticity
diagram were indicated in Figs. 21 - 23. Red color became
to magenta, blue to cyannish blue, and green to cyan, because
of the lackness of yellow dye.
5-2 Results
In color prints for the preservation, the decreases of the
spatial infomation can not be avoided, but their effects on the
visual photo-intapretation are almostly ignored, even if they
are reproduced either from the aerial negative color film or
from the reversal aerial color film,
From a stand point of utility value, the preservation of
the color film in the color negative state, is more economical
and operative than the positive film state. The color separa-
tion method which separates the color to red, green, and blue.
Black/white negatijve film is the most excellent for the long
time preservarion, but the highest color composite technique
is needed and the cost is very expensive.
The humidity is a very destructive factor for the color
fading of the film, so it is recommended for the long time
preservation that the humidity is less than 20%, the temperature
less than 10%, if possible less than 0°C.
ACKNOWLEDGEMENT
The authors wish to thank Prof. Dr. Yasufumi Emori of Chiba
University for helpful comments in preparing this paper.
11