
48-1
48.1 Introduction
Imagine how dull a world without color would be. Until the 1960s, many products were available in only
a li
mited
va
riety
of co
lors
. Co
nsumers
de
mand
a va
riety
of co
lors,
an
d
th
e
ma
terials
av
ailable
tod
ay
al
low
m
anufacturers
to m
eet
t
hose
d
emands
.
For many centuries, color was controlled by master color matchers adjusting the color of their products
vi
sually
in na
tural
da
ylight
. It wa
s
ab
out
th
e
19
50s
wh
en
co
lor-measuring
in
struments
be
gan
to ma
ke
a
si
gnicant
im
pact
in th
e
ma
nufacturing
pr
ocess,
an
d
by th
e
19
70s
th
ey
we
re
co
mmonly
us
ed
in mo
st
in
dus-
tries
. Co
lor-measuring
in
struments
ar
e
us
ed
mo
stly
fo
r
qu
ality
co
ntrol ...