Nikon Scanners, Software Reference Manual

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four-color process the use of four subtractive pigment-based primaries, Yellow, Magenta
Cyan, and blacK, to reproduce the full spectrum in print. Can also be
achieved with three color process, Yellow, Magenta, and Cyan, which
are the compliment (opposite) to the three additive primaries, Blue,
Green, and Red.
exposure shift a change in a lighter or darker direction.
GCR gray component replacement is the use of black ink to substitute for
common quantities of colored inks. In other words, when the print
has a large gray area that is being reproduced using approximately
equal quantities of cyan, magenta, and yellow ink, the common com-
ponent of the three colors can be replaced with a similar density of
black ink. Also called ‘achromatic’ reproduction.
gray balance the relative proportion of primary colors, additive or subtractive,
needed to produce a neutral tone from dark to light intensities.
HEX or (h) a number system which uses a base of 16. Where we use the first ten
numbers in the arabic system and continue on with letters: 0, 1, 2, 3,
4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
hue a discrete, fully saturated color, is given a name. This name is its
“hue”. The same hue is referred to by different descriptors depending
on the color model being used.
handshaking the process of acknowledging transmission and reception of data
through hardware or software.
interleaved refers to a color pixel storage structure where the RGB elements of
the pixel are all present in consecutive order at one memory location
for that pixel. Non-interleaved or planar means that the red, green
and blue pixels are stored in different planes or files. See band sequen-
tial, byte sequential, line sequential, full chunky, chunky planar, and
full planar.
irradiation photons entering a light sensitive film emulsion tend to ‘bounce
Page 184 Software Reference for Scanners
Glossary of Computer Imaging Terms