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GLOSSARY OF
TERMS
CMYK
Refers to the four colors used in process printing; cyan, magenta,
yellow and black.
Color Gamut
Refers to the range of colors possible to reproduce using a specific
device, ie., a monitor, or printer (inkjet) or process, four-color
process printing.
Color Separation
Dividing a continuous-tone color image into the four process color
components.
Coverage
Extent to which ink covers the surface of a substrate. Ink coverage
is usually expressed as light, medium or heavy.
Cyan
One of the four process colors. Also known as process blue.
Die
Device created for cutting, scoring, stamping, embossing and
debossing.
Die Cut
To cut irregular shapes in paper or paperboard using a die.
Dot Gain
Phenomenon of halftone dots printing larger on paper than they are on
films or plates, reducing detail and lowering contrast. Also called dot
growth, dot spread and press gain.
Dots-per-inch
Measure of resolution of input devices such as scanners, display
devices such as monitors, and output devices such as laser printers,
imagesetters and monitors. Abbreviated DPI. Also called dot pitch.
DPI
Considered as "dots per square inch," a measure of output
resolution in relationship to printers, imagesetters and monitors.
Emboss
To press an image into paper so it lies above the surface. Also
called cameo and tool.
Engraving
Printing method using a plate, also called a die, with an image cut
into its surface.
Foil Emboss
To foil stamp and emboss an image. Also called heat stamp.
Foil Stamp
Method of printing that releases foil from its backing when stamped
with the heated die. Also called block print, hot foil stamp and stamp.
Four-color Process Printing
Technique of printing that uses black, magenta, cyan and yellow to
simulate full-color images. Also called color process printing, full
color printing and process printing.
K
Abbreviation for black in four-color process printing. Hence the 'K'
in CMYK.
Laid Finish
Finish on bond or text paper on which grids of parallel lines
simulate the surface of handmade paper. Laid lines are close together
and run against the grain; chain lines are farther apart and run with
the grain.
Linen Finish
Embossed finish on text paper that simulates the pattern of linen
cloth.
Magenta
One of the four process colors.
Matte Finish
Flat (not glossy) finish on photographic paper or coated printing
paper
Metallic Ink
Ink containing powdered metal or pigments that simulate metal.
Metallic Paper
Paper coated with a thin film of plastic or pigment whose color and
gloss simulate metal.
Overprint
To print one image over a previously printed image, such as printing
type over a screen tint. Also called surprint.
Pica
A unit of measure in the printing industry. A pica is approximately
0.166 in. There are 12 points to a pica.
Pixel
Short for picture element, a dot made by a computer, scanner or other
digital device. Also called pel.
Point
(1) Regarding paper, a unit of thickness equating 1/1000 inch. (2)
Regarding type, a unit of measure equaling 1/12 pica and .013875 inch
(.351mm).
Process Color (Inks)
The colors used for four-color process printing: yellow, magenta,
cyan and black.
Rag Paper
Stationery or other forms of stock having a strong percentage content
of "cotton rags."
Ream
500 sheets of paper.
Register
To place printing properly with regard to the edges of paper and
other printing on the same sheet. Such printing is said to be in
register.
Resolution
Sharpness of an image on film, paper, computer screen, disc, tape or
other medium.
RGB
Abbreviation for red, green, blue, the additive color primaries
Separations
Usually in the four-color process arena, separate film holding
qimages of one specific color per piece of film. Black, Cyan, Magenta
and Yellow. Can also separate specific PMS colors through film.
Subtractive Color
Color produced by light reflected from a surface, as compared to
additive color. Subtractive color includes hues in color photos and
colors created by inks on paper.
Subtractive Primary Color
Yellow, magenta and cyan. In the graphic arts, these are known as
process colors because, along with black, they are the inks colors used
in color-process printing.
Thermography
Method of printing using colorless resin powder that takes on the
color of underlying ink. Also called raised printing.
UV Coating
Liquid applied to a printed sheet, then bonded and cured with
ultraviolet light.
Varnish
Liquid applied as a coating for protection and appearance.
Wove
Paper manufactured without visible wire marks, usually a fine
textured paper.
Glossary from Getting it Printed, copyright © 1993 by Mark Beach. Used by
permission of North Light Books, a division of F&W Publications, Inc.
(800) 289-0963.
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