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Glossary Page 85
default
A set of values used when no other selections have been made. These
are sometimes called factory defaults if the original values have not been
changed since the scanner has left the factory.
dithering
A process in which software or an output device simulates continuous
tones with groups of dots.
document
The item, such as a sheet of paper or a book, that is placed on the
document table for the scanner to read.
dpi
Dots per inch. A unit of measurement for resolution. The higher the value,
the higher the resolution.
grayscale
Images represented with various shades of gray in addition to black and
white.
halftoning
A method of using dot patterns to represent an image.
home position
The position at the rear (nearest the cover hinge position) of the scanner
where the carriage rests before a scanning operation. Also, the position at
the rear of the TPU where the TPU’s lamp assembly rests before a
scanning operation.
interface
A piece of hardware, a method, or a standard used for connection
between or among computer devices.
line sequence
A type of color scanning that separates primary colors line by line. The
carriage makes only one pass.
monochrome
Black and white images, or images represented only by the intensity of
luminosity.