Xerox CX250, CX240 Darkest part of an image original and reproduction having, Creep, Publication

Glossary	259
Screen rulings	The number of rows of printing dots per inch on a halftone film. A
	150lpi-screen ruling provides much better quality than 65lpi.
SEF	A printer page orientation, where pages are delivered short end first.
Shadows	The darkest part of an image (original and reproduction) having
	densities near to maximum density. In the reproduction, shadows are
	printed with dot areas between 80% and 100% See also Highlights
	and Midtones.
Shingling	A procedure that moves the image area of a page toward the direction
	specified, usually towards the binding, in order to compensate for
	creep.
Signature	Sheet of printed pages which when folded becomes part of the
	publication.
Solid	The point in the picture printed with a dot area of 100%. See also
	Highlights, Midtones and Shadows.
Spectrophotometer	Spectrophotometer (X-Rite DTP41), which is a 24 band color
	measurement instrument that reports densitometric, colorimetric
	and spectral data.
Spot color	An additional separation (fifth, or more) that is used with special inks
	to achieve difficult color combinations, such as gold, or chocolate
	brown. Spot color is sometimes used by graphic artists to define
	special corporate colors, for example, for company logos. On the
	Spire CXP Color Server, spot colors are tanslated into CMYK values
	using a dictionary, that can be edited to adjust CMYK values.
Step and repeat	The procedure of copying the same image by stepping it in position
	both horizontally and vertically according to a predetermined layout.
Stochastic screening	A method of creating frequency-modulated halftones that depends
	on the number of laser dots in a given area rather than the size of the
	laser dots in a given area. The dots are randomly placed and very
	small. Areas with a higher dot percent have more spots exposed in
	that area and those with a low dot percent have fewer spots. Stochastic
	screening is used to eliminate moiré and improve picture detail and
	sharpness in high-end color printing.