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Glossary
symbols
8-bit grayscale
Used to represent black-and-white photos accurately. These grayscale
images contain 256 shades of gray.
24-bit color
Color images composed of three 8-bit color channels. When
combined, the red, green, and blue channels provide up to 16 million
colors. This is also referred to as true color.
a
acquire
A command offered by programs that support TWAIN or the HP
Scanjet Plug-in. Selecting Acquire takes you directly to the selected
scanning software, and then returns the scanned image to the
requesting program.
active program
The program you are currently using or that is currently selected. A
program’s title bar changes color to distinguish active from inactive
programs.
ADF
See automatic document feeder.
Active XPA
Or XPA. See transparency adapter.
ADF
See automatic document feeder.
ADF glass
The piece of glass on the scanner bed that the ADF uses to scan
documents from the feeder tray.