Printing Terms Glossary
Gang-Run
– To reproduce two or more different printed products simultaneously
on one sheet of paper during one press run. Also called combination run.
Gate Fold – A bindery term describing a sheet that folds where
both sides fold toward the gutter.
Gather – To assemble printed signatures next to each other in
the proper sequence for binding, as opposed to nesting. Also referred to as
stacking.
GCR – Gray Component Replacement. The technique of replacing gray tones in the yellow, cyan and magenta films, made while color separating, with black ink. Also referred to as achromatic color removal.
Ghosted
Halftone – A halftone image for which the density has been reduced
to produce a very faint image.
Ghosting – (1) Phenomenon of a faint image appearing on a printed
sheet where it was not intended to appear. Gas ghosting refers to the transfer
of the faint image from the front of one sheet to the back of another sheet.
Mechanical ghosting refers to the faint image appearing as a repeat of an
image on the same side of the sheet. (2) Phenomenon of printed image appearing
too light because of ink starvation.
Gilding – A bindery term referring to the process of gold leafing
the edges of a book.
Gloss – A general term referring to light reflectivity in realtion
to paper, ink, varnish, laminants or coating.
Grade – A general paper term used to distinguish between or among
printing papers, of which the specific meaning depends on the context used.
Grade can refer to the category, class, rating, finish or brand of paper.
Graduated Screen Tint – A screen tint that changes densities gradually
and smoothly, not in distinct steps. Also referred to as gradient,
ramped screen and vignette.
Grain Direction – A paper term referring to the predominant direction
in which fibers in paper become aligned during manufacturing. Also referred
to as machine direction.
Grain Long Paper – A paper term referring to the orientation of
fibers which run parallel to the long dimension of the sheet.
Grain Short Paper – A paper term referring to the orientation
of fibers which run parallel to the short dimension of the sheet.
Grammage – A paper term referring to the basis weight of paper
in grams per square meter (gsm).
Graphics – Visual elements that supplement type to make printed
messages more clear or interesting.
Gravure – A method of printing using metal cylinders etched with
millions of tiny wells that hold ink.
Gray Balance – Printed cyan, magenta and yellow halftone dots
that accurately reproduce a neutral gray image.
Gray Scale – A digital prepress term referring to an image which
has a tonal range comprised entirely of shades of black, gray and white. ALSO
– A strip of gray values ranging from white to black. Used by process
camera and scanner operators to calibrate exposure times for film and plates.
Also called step wedge.
Grind Edge – An alternate bindery term for binding edge when referring
to perfect bound products.
Grindoff – A bindery term referring to a portion, approximately
1/8 inch (3 mm), along the spine that is ground off of gathered signatures
before perfect binding.
Gripper Edge – The edge of a sheet held by grippers on a sheetfed
press, thus going first through the press. Also referred to as feeding
edge and leading edge.
Groundwood Paper – A paper term referring to newsprint and other
inexpensive papers made from pulp created when wood chips are ground mechanically
rather than refined chemically.
Gutter – A bindery term referring to the inside margins toward
the back or the binding edges of a multi-page booklet
[ return to top ] . [ Main Menu ]
.
[
Home ]
[ About AGI ]
[ Prepress ]
[ Press Room ]
[ Finishing ]
[ Contact Us ]
[ Printing Terms ]
[ Directions ]
[ A ] . [ B ] . [ C ] . [ D ] . [ E ] . [ F ] . [ G ] . [ H ] . [ I ] . [ J ] . [ K ] . [ L ] . [ M ]
[ N ] . [ O ] . [ P ] . [ Q ] . [ R ] . [ S ] . [ T ] . [ U ] . [ V ] . [ W ] . [ X ] . [ Y ] . [ Z ]
4795 Oakland Street • Denver, Colorado 80239 • (303) 371-2345 • Fax (303) 371-2444
.
