December 12, 2016


Abbrevation for gray component replacement. See Gray Component Replacement.
December 12, 2016

Ghost Halftone 

A very light halftone often overprinted with text.
December 12, 2016

Ghost Image 

In screen printing, an ink stain (commonly in the image areas) on the screen fabric, resulting from improper cleaning. More caustic and vigorous cleaning methods are thus necessary.
December 12, 2016


An offset printing defect characterized by the appearance of faint replicas of printed images in undesirable places, produced in one of two ways. Mechanical ghosting is characterized by the appearance of a
December 12, 2016


A device used to measure the amount of gloss possessed by a paper, expressed as the ratio of the amount of the paper sample’s reflected light to the light falling on it
December 12, 2016


A term describing any surface or substance—such as paper or ink—that appears shiny. (See Gloss.)
December 12, 2016


Formed in 1966 Graphic Communications Association (Now IDEAlliance), the General Requirements for Applications in Commercial Offset Lithography (GRACoL) aims to develop an industry specification and reference for color offset lithography.
December 12, 2016


The direction of fibers in a sheet or web of paper, generated during paper formation. As paper moves forward along the forming wire on a papermaking machine, the fibers align themselves in a direction
December 12, 2016

Grain Direction

The direction in which all or most of the paper fibers are oriented in a sheet or web. Since the grain is produced on the forming wire of a papermaking machine in the
December 12, 2016

Graphics Interchange Format

See GIF.

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