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Glossary

(Printing Industry Terminology)

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C1S and C2S
Abbreviations for Coated One Side and Coated Two Sides paper.
Carton
The sell units of paper. A carton can contain anywhere from 500 to 5,000 sheets depending on the size and weight of the sheets.
Case Bind
Binding using glue to hold the signatures to a case made of binder board covered with fabric or leather. Also called hard bind or hard cover.
Choke
Slightly reducing the size of an image or colored object to create a trap with the adjoining image or color.
Clipping Path or Mask
A vector-based outline used to clip an image from it's background so only the desired part of the image appears.
CMYK
Acronym for ink colors used in 4-color process printing. Cyan, Magenta, Yellow, Black. Also called "process" colors.
Coarse Screen
Low halftone screen rulings, usually 65, 85 or 100 lines per inch.
Collate
Organizing printed materials into a specific order.
Color Build
Overlapping two or more screen tints to create a desired color. Also called a build or tint build.
Color Cast
An unwanted color affecting an image.
Color Correct
Adjusting the relationship between colors of an image to achieve desirable results.
Color Curve
Used to change or correct colors or color balances in an image. Color curves can be saved and re-applied to other images to achieve consistent color. These are especially useful when a known anomaly is present in a monitor or scanner.
Color Shift
Changes in color resulting from changes in registration, dot gain or ink densities during 4-color process printing.
Comb Bind
Binding by inserting a flexible plastic "comb" through holes punched along the edge of a book.
Commercial Printer
A printer producing a wide range of products such as books, stationery, business forms, announcements, brochures, magazines, business cards and posters., etc. etc.
Concentric
See Concentric Screening
Concentric Screen
See Concentric Screening
Concentric Screening
Concentric Screening™ is AM screening in which the round AM dots are divided into thin concentric rings. The purpose of Concentric Screening in offset printing is to achieve the benefits of stochastic screening with the smoothness of AM screening. AM screening contains dots of equal spacing which vary in size. Stochastic screening contains small spots of equal sizes which are randomly distributed. While the benefits of stochastic are real, they are related to the small spot size, not the random distribution. The small spot size of the stochastic screen limits the ink film thickness on the offset plate. However, the random distribution can cause a grainy appearance. By dividing the AM dot into thin concentric rings, the AM dot has similar ink film limiting characteristics on the offset plate. The result is a dramatic increase in quality, color saturation and press stability- resulting in the ability to print much higher screen rulings.
Continuous Tone
An image or illustration having a range of shades not made up of dots. Also called Contone.
Contone
Continuous tone, as opposed to half-tone screen.
Coverage
The extent to which ink covers the surface of a printed sheet. Usually identified as light, medium or heavy.
Crash
Coarse cloth embedded in the adhesive along the spine of a book to increase it's strength.
Creep
The occurrence of the middle pages of a signature extending beyond the outside pages when folded.
Crop
Blocking or cutting out unwanted portions of an image.
Crossover
An image or type that spreads across facing pages of a printed book, brochure or magazine.
Cure
Drying ink, varnish or other coatings after printing to prevent setoff and ensure good adhesion to the sheet.
Cyan
One of the four process printing colors. Also known as process blue.