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Glossary of Printing Terminology

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Java
An object-oriented programming language developed by Sun Microsystems in the early 1990s. Unlike conventional languages which are generally either designed to be compiled to native (machine) code, or interpreted from source code at runtime, Java is complied to a bytecode which is then run by a Java virtual machine.

JDF (Job Definition Format)
A digital job ticketing specification, based on XML, developed by members of the CIP4 organisation.

JPEG (or JPG) Joint Photographic Experts Group
The organisation which gave its name to an image file format with built-in compression. JPEG compression is lossy in that the higher the compression level, the more detail is lost in the image. An improved version of the JPEG format, JPEG 2000, is now becoming more widely available. See: www.jpeg.org

Job Ticket
Specifies the print job and gives all pre-press requirements, technical information, and finishing required and administrative data.

Just In Time Printing
Documents can be stored digitally and then produced at a given time. This type of process allows for only the number of copies needed to be printed.