Type; Rgb; Grayscale; Cmyk - Microtek ArtixScan 4500t Reference Manual

Type

The Type box shows you the image type of the current scan job. ScanWizard Pro
allows direct scanning in the following color spaces described below.

RGB

RGB (Red, Green, and Blue) images use three colors to reproduce up to 68.7
billion colors. Because scanners and monitors are RGB devices, the RGB color
space is the most commonly used space for capturing and displaying images.
ScanWizard Pro offers standard RGB and 48-bit RGB color selection, with the 48-
bit option available for the ScanMaker 5, ScanMaker 2000, the Artix line of
scanners, and other Microtek professional pre-press scanners.

Grayscale

Grayscale images use shades of gray to simulate gradations of color or tonal
values, and contain 8 bits per pixel. The Grayscale 16-bit option is provided in
ScanWizard Pro for professional pre-press scanners.

CMYK

CMYK images are made up of the standard four colors (cyan, magenta, yellow
and black or K) for separated film or digital files used for sheetfed or web offset
printing. CMYK mode instantly converts the scanner' s RGB input to the CMYK
color space. CMYK images are four-channel images, containing 32 bits per pixel.

Lab Color

Lab images are three-channel images containing 24 bits per pixel. Lab mode is
useful for editing a pixel' s luminance but not its color values. Lab mode produces
device-independent color and is recommended for moving images between
systems or printing to a PostScript Level 2 printer.
60 Microtek ScanWizard Pro for Macintosh