Xerox CX250, CX240 manual See also Trapping, More dots in a dark area and fewer in a light area

Glossary	253
Frame	A color overlap created intentionally at a color border so as to
	minimize the effects of misregistration. Also known as trap or grip.
	See also Trapping.
Frequency modulated screens	A method of creating halftones where the spots are all the same size,
	but the frequency or number of dot changes in a given area. There are
	more dots in a dark area and fewer in a light area.
Frozen job	A job for which the appropriate paper stock is not available, for
	example, the correct paper type, paper size or paper weight.
GCR	Abbreviation for Gray Component Replacement. Method for
	reducing the CMY amounts that produce the gray component in a
	color, without changing the color hue.
Graduated blend	See Degradé.
Gravure printing	A printing method in which the image is engraved through a screen
	below the surface of a cylinder. The ink is transferred to paper when
	pressed to the cylinder. Gravure is used for very long print runs and
	on many substrates.
Gray component	The amounts of CMY in a color, which result in neutral gray, based on
	the lowest separation value of the color. See also GCR.
Grayscale	A scale of gray tones from white to black. Digitally, grayscale images
	have up to 256 different levels of gray. See also 8 bit/1 byte image.
Halftone	A negative or positive image whereby detail of the image is
	reproduced with dots varying area but of uniform density. Creates the
	illusion of continuous tone when viewed with the naked eye.
Highlights	The whitest portions of the original or reproduction that have no
	color cast. The highlight dot is ranged in the reproduction from the
	smallest printable dot to approximately 25%. See also Midtones and
	Shadows.
HSL	Abbreviation of Hue, Saturation and Lightness. This is a color model,
	which specifies a color by its wavelength (Hue), chroma or purity of
	the color (Saturation) and value of its brightness (Lightness).
Image area	Portion of a negative or plate corresponding to inking on paper. The
	portion of paper on which ink appears.