The maximum number of bits that are used to define a pixel. A measure of the defined brightness range. The fourth color in four-color printing. In the practical sense, any color which is close to this ideal in a relative viewing situation, i.e. a color of very low saturation and of low luminance. A region of a view area of the scan used for areas with only black and white lines or shapes.
Photos show depth, while drawings are flat.
A drawing region is also used to capture text that includes graphical elements. A region of a view area of the scan used for areas that include an image with shades of gray in addition to black and white. Photos show depth, while drawings are flat. The addition of black ink to the other process colors when separating an RGB color image into CMYK colors. See also white point.