Epson EXPRESSION 1640XL User Manual page 158

ColorSync
Color management system for Macintosh that is designed to help you get
WYSIWYG (what you see is what you get) color output. This software displays
colors on your screen as they are on the scanned documents, or prints colors as
you see them on your screen.
daisy chain
A SCSI bus arrangement that allows several devices to be connected
simultaneously in a line to a single computer. See SCSI.
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
Short for dots per inch. A unit of measurement for resolution. The higher the
value, the higher the resolution.
dropout color
A color the scanner does not recognize and ignores. You can select and deselect
dropout colors in the scanner software.
ESC/I
Abbreviation for EPSON Standard Code for Image scanners. A system of
commands that allows you to control image scanners from your software.
ESC/P
Abbreviation for EPSON Standard Code for Printers. A system of commands that
allows you to control printers from your software.
exposure
A scanner function that lightens or darkens the scanned image data.
grayscale
Images represented with various shades of gray in addition to black and white.
halftoning
A method of reproducing images with patterns of dots to improve the quality of
the output.
2
Glossary