Glossary
additive primary colors
Primary colors which produce white when mixed in a certain proportion. These are red, green, and blue
bi-level data
Image data that is composed of 1 bit per pixel. A pixel is represented by a single bit of digital data that can express only 1 (light) or 0 (dark).
bit
Short for binary digit. The smallest unit of data in computer processing. A bit can represent two values: on and off, or 1 and 0.
bit / pixel
The unit that indicates the number of bits allocated for a pixel. The larger the bit value, the more detail of a pixel will be reproduced.
brightness
A scanner function to lighten or darken the output image data.
byte
A unit of information consisting of eight bits. A byte can represent a control code or character.
carriage
A component of the scanner that contains the optical sensor and light source for scanning.
color correction
A method of adjusting the color image data for a particular type of device so that the reproduction results are as close as possible to the original colors.
color separation
A process to convert
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.