Xerox manual DocuColor 2000 series design guide, Sheet-fedpress

Sheet-fed press	A printing press, either digital or offset, that prints on cut sheets of
	paper.
Sheets per hour	A term commonly used to describe the speed of binding and folding
	operations.
Short edge feed	The shortest edge of the paper is fed into the printer first.
Short grain	Paper in which the orientation of fibres is parallel to the shortest edge
	of the sheet. For example, in an A4 sheet, the fibres of a short grain
	sheet are parallel to the 210 mm dimension of the page.
Short run	A run length on a printing press typically less than 1,000 copies.
Show-through	Printing on one side of a sheet that can be seen on the other side under
	normal lighting conditions.
Signature	Both sides of a printed sheet that are folded to make up a section of a
	printed piece. A greeting card is a good example – when opened fully,
	the card is divided into quadrants.
Simplex	To print on one side of a sheet and leave the other side blank (digital or
	xerographic printing term).
Spectrophotometer	An instrument for measuring colour in CIE colour spaces.
Spot colour	A colour printed with custom inks rather than process colours. The
	colour is usually specified using the PMS or Pantone numbers.
Spread	A form of trapping. A spread traps a light foreground to a dark
	background. The lighter colour is spread outward slightly into the darker
	colour to maintain the visual edge. See also choke.
Spreads	Printer spreads are pages that appear next to each other so that after
	folding and finishing, they are in the proper order. Reader spreads are
	pages that appear across from one another in the final bound and
	finished publication (ie, what the reader actually sees).
SRA0	Standard ISO cut sheet size of 900 x 1280 mm. The sheet size is slightly
	larger than A0 allowing for bleed.
SRA1	Standard ISO cut sheet size of 640 x 900 mm. The sheet size is slightly
	larger than A1 allowing for bleed.
SRA2	Standard ISO cut sheet size of 450 x 640 mm. The sheet size is slightly
	larger than A2 allowing for bleed.
SRA3	Standard ISO cut sheet size of 320 x 450 mm. The sheet size is slightly
	larger than A3 allowing for bleed.
Stochastic screening	A relatively new method for creating halftones. Stochastic screening
	generates equal size dots that appear to be placed randomly. Advanced
	algorithms are used to determine the optimum placement of dots so as
	not to cause visual artifacts (such as moire patterns). Registration on
	press is slightly more difficult than with lined screens but the colours
	can be very brilliant. The concepts of screen frequency and screen
	angles do not apply with stochastic screening. Also called FM screening.

DocuColor 2000 series design guide

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