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Graphic Communications Terms Glossary
Comprehensive Creep
A detailed dummy or sketch of a design, intended to give a clear sense The shifting position of the page in a saddle-stitched bind. Creep
of how the finished piece should look. moves the inside pages or signatures away from the spine.
Compression Crop
Reducing the size of a file for storage purposes or to enhance the To opaque, mask, mark, cut, or trim an illustration or other
speed of data transfer by eliminating the redundancies and other reproduction to fit a designated area.
unnecessary elements from the original. See also: data compression. Crop Marks
Computer-to-plate (C2P) Symbols placed in the margin outside the image area that indicate to
Describes a system in which the use of desktop publishing software, the printer and bindery the area to be printed and/or trimmed from
electronic prepress workstations and platesetters allows the imaging of the image.
metal plates for any format of press without the use of film, stripping Cropping
or traditional platemaking. This process results in lower costs while (1) Indicating what portion of the copy is to be included in the final
shortening the amount of time needed to get a job on the press. reproduction. (2) Trimming unwanted areas of a photograph film or
Sometimes also called C2P to distinguish it from CTP. print.
Computer-to-plate (metal) Cross Direction
Producing metal plates directly from digital files without producing a In paper, the direction across the grain. Paper is weaker and more
set of film negatives. sensitive to humidity in its cross direction.
Computer-to-plate (polyester) Crossover
Producing polyester plates directly from digital files without producing A reproduction that extends across two facing pages in a book or
a set of film negatives. magazine and crosses over the binding.
Computer-to-press (CTP) Cure
A printing system that includes desktop publishing software, To dry inks, varnishes or other coatings after printing to ensure good
electronic prepress workstations and a type of press which is capable adhesion and prevent set-off.
of rapidly changing the images it is printing without the use of Curl
removable plates. Called CTP, to distinguish it from C2P. The distortion of paper due to differences in structure or coatings
Condition from one side to the other or from absorption of moisture on the
To keep paper in the pressroom for a few hours or days before printing press.
so that its moisture level and temperature equal that in the pressroom. Cutoff
Content Proof Circumference of the impression cylinder of a web press, therefore,
A proof that shows the customer the correct text and position of image the length of the printed sheet on roll to sheet presses or the length of
elements but does not necessarily show accurate color reproduction. the repeat pattern on roll to roll presses.
Continuous Tones Cyan
Commonly identified as the film for the four colors of a separation One of the three subtractive primary colors used in process printing.
before it is broken into dots. It is commonly known as “process blue.”
Continuous-Tone Digital Proofing
Producing a proof with reliable color but no halftone pattern D
(photorealistic) directly from a digital file, usually by inkjet or dye
sublimination process, without producing a set of film negatives. Dampening
Contrast Moistening non-image areas of lithographic plates with water-covered
The amount of difference between the lightest and the darkest areas rollers.
in a photo or artwork. Dampening System
Conventional Dot The mechanism on a press for transferring fountain solution to the
A halftone dot with the classic square format: middle tone dots are plate.
square, while the extremely small black dots or white openings are Data Compression
round. A software or hardware process that reduces the size of images so
Conversion that they occupy less storage space and can be transmitted faster and
The process of preparing documents, capturing, and indexing current easier. This process is accomplished by removing the bits that define
files for use on an imaging system. blank spaces and other redundant data, and replacing them with a
Cookie smaller algorithm that represents the removed bits. Data must be
A collection of information, usually including a username and the decompressed before it can be used. See also: compression.
current date and time, stored on the local computer of a person using Data Conversion
the World Wide Web, used chiefly by web sites to identify users who Technique of changing digital information from its original code so
have previously registered or visited the site. that it can be recorded by an electronic device using a different code.
Copyfitting Data created in one software format may be converted to another
Adjusting copy to the allotted space by editing the text or changing before printing. Data must also be converted for various output
the type size and leading. devices, such as when RGB colors are converted to CMYK.
Coverage Data Processing
The amount of ink on a page or sheet, usually given in percentages. (1) Changing raw data or information into a usable format by using
a computer. (2) The systematic manipulation of information; for
example, handling, merging, sorting, computing.
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