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Screen angles
To prevent a moire pattern (or, more correctly, moiré) in CMYK full colour halftone printing, the line-screen of each printing plate need to be positioned at different angles to each other.
Server
A computer which has been set up specifically to store and 'serve' files to other computer users. In a design studio or prepress environment, this is essential to prevent the duplication of files and so that an effective backup policy can be implemented.
Service bureau
One of the terms for a company that specialises in artwork production, for example high resolution drum scanning, color retouching and color correction, outputting films and preparing files for printed reproduction.
Slug
There are various definitions for the word slug in graphic design, prepress and printing terminology. Including;
- In traditional hot metal typesetting – such as Linotype – a slug is a line of text from a linecasting machine. Blank slugs were also used to apply leading between lines of type. This has now been superceded by electronic desktop publishing.
- In magazine design, the term slug is used for a heading that stays in the same position in each issue of the publication.
Spread
As regards color reproduction, a spread is a trapping reference. A spread is created when the inner, or lighter, graphic is set to spread out to overlap an outer, darker, object to create the trap.
See also: Trapping, Choke
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