Epson GT-7000 - Manual (Page 112)

4 Glossary
PapU-U
Rev. C
A5 size GLOSSARY.FM
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subtractive primary colors
The colors of cyan, magenta, and yellow (CMY) - which produce black when
mixed in certain amounts. In printing, black is often added to give more definition
as mixing of actual inks cannot produce pure black.
terminator
A device that stops electronic signals, and prevents them from proceeding or
returning to other devices. This is necessary to stop a signal from continuously
bouncing between devices.
threshold
A reference point that is used to determine whether data will be processed as
“on” or “off”. In the case of color image data, “on” means that a certain color will
appear in a pixel or dot, and “off” means that color will not appear there.
tone correction
A method of adjusting the tone curve so that the reproduction results on different
types of output devices have gradations similar to the original image.
tone curve
The graph that shows the contrast ratio between the input (original image) and
output (image data) in image processing.
USB
A Universal Serial Bus. A hardware interface for connecting low-speed
peripherals such as a keyboard, mouse, scanner, or printer to the computer.
USB hub
A device that normally provides four TYPE A sockets to increase the number of
USB ports on a PC.