Cromalin
A type of single sheet proof that is used for verifying the colors, checking register, obvious blemishes and size of images. Cromalin is a trademark of Dupont.

crop mark
Markings (usually thin lines) that show where a page or image has to be trimmed. Don’t forget to use the color ‘registration’ (most applications have such a color) if you create your own crop marks.

cross-coupling
Change in position of axes when position changes in another axis, also known as crosstalk.

crossover
An illustration that covers part of two facing pages in a book or magazine. It gets its name from the fact that it crosses over the binding edge. It is important that both parts of a color illustration line up on both pages when the book is assembled and the colors match on both halves of the reproduction.

CRT
Abbreviation for Cathode Ray Tube: the tube used in computer monitors

CS
Abbreviation for Creative Suite, a family of software products from Adobe

CSM
Abbreviation for Customer Supplied Material

CSMA/CD
Abbreviation for Carrier Sense Multiple Access with Collision Detector

CSR
Abbreviation for Customer Service Representative

CT
Abbreviation for Continuous-Tone

CTP
Abbreviation for Computer To Plate

CTRL
Abbreviation for ConTRoL: refers to both the control character as well as the key on the keyboard.

curl
Paper can curl because of difference in coatings on opposite sides of a sheet, or due to absorption of moisture. The concave side of a sheet is called the curl side.

cursive
Writing style in which the letters of a word are connected

curved plate
A press plate curved to fit the printing press cylinder.

cut and paste
A built-in function in the Macintosh operating system and Windows with which a user can designate a portion of an image in one file, delete(cut) that portion, and copy it exactly (paste) into another file.

cut-off
The cut or print length relating to the circumference of the plate or cylinder on the rotary press

cXML
An standard file format to handle financial transactions. It comes from the business-to-business world, and is one of many standards that have emerged from EDI and similar initiatives over the years. cXML is based on Ariba technology and has some unique aspects that help support interactive synchronous messaging over the web. It has been widely adopted in other industries besides graphic arts.

cyan
Blue-isch color that is part of the CMYK process colors that are used in 4-color printing.

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