Xante Accel-a-Graphix CT4, User Manual

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G-6 Glossary bb __________________________________________
Default Settings
The values or settings which are preset on a computer system,
controller, or printer for power up operation. Most default settings
may be changed by the user through applications, utilities, printer
commands, or the front panel. See also Factory Default Settings.
∆
E
(Pronounced Delta-E), a computed value that represents how close
two colors are to being the same. A 1
∆
E is perceptually borderline
visible to the human eye, and in printing situations a 6 to 7
∆
E
usually acceptable.
Densitometer
A device that produces a set light source and then measure an
entity’s (such as a printer’s) ability to transmit or reflect light
compared to a common density standard.
Density
A measurement of the ability to let light through or let light reflect
from a given surface. For example, the thicker (denser) the ink, the
less it lets light reflect back through it.
Dot Gain
The result of media absorbing ink which causes the ink to spread out
rather than forming a crisp, precise pattern.
Download Font
To load a new font into the memory of the Accel-a-Graphix CT4’s
controller.
Drift
The small changes in an instrument’s ability to measure accurately.
For example, over time a monitor can drift in it’s ability to produce a
100% red because of age, environment and other factors. Calibration
brings the instrument back in line with standard color measurements.