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Gang: Group of frames or impositions of different jobs arranged and positioned to be printed together.
Ganging: The bundling of two or more different printing projects on the same sheet of paper.
Gather: To assemble or collect sections into single copies of complete books for binding.
Gathering: Assembling sheets of paper and signatures into their proper sequence; collating.
Ghosting: Image which appears as a lighter area on a subsequent print due to local blanket depressions from previous image areas on a letterpress rotary machine as well as on an offset. Also marring a print by the placement of an image printed on the reverse side which has interfered with its drying so that differences in the trapping frame colors are apparent.
GIGO: Garbage In, Garbage Out.
Gilding: Sticking gold leaf onto edges of books with a liquid agent and made permanent with burnishing tools.
Glassine: A strong transparent paper.
Gloss Ink: Quick drying oil based inks with low penetration qualities, used on coated stock.
Glyphic: A carved as opposed to scripted typeface.
Goldenrod: An orange colored paper with gridlines, used to assemble materials for exposure in platemaking.
Graduated Screen: An area of image where halftone dots range continuously from one density to another.
Grain: Direction of fibers in a sheet of paper governing paper properties such as increased size changes with relative humidity across the grain and better folding properties along the grain.
Grained Paper: A paper embossed to resemble various textures, such as leather, alligator, wood, etc.
Gravure: An intaglio or recessed printing process. The recessed areas are like wells that form the image as paper passes through.
Gray Balance: The dot values or densities of cyan, magenta and yellow that produce a neutral gray.
Gary Scale: A strip of standard gray tones, ranging from white to black, placed at the side of original copy during photography to measure tonal range and contrast (gamma) obtained.
Gripper: A series of metal fingers that hold each sheet of paper as it passes through the various stages of the printing process.
Gripper Edge: The grippers of the printing press move the paper through the press by holding onto the leading edge of the sheet; this edge is the gripper edge.
Gripper Margin: Uprintable blank edge of paper on which grippers bear, usually 1/2" or less.
Groundwood: Low cost papers such as newsprint made by the mechanical pulping process as opposed to chemical pulping and refining.(see Newsprint)
Gum Arabic: In offset lithography, used in platemaking and on press to desensitize the non-printing areas of plates.
Gumming: The application of gum arabic to the non-printing areas of a plate.
Gutter: Space between pages in the printing frame of a book, or inside margin towards the back or binding edge. The blank space or margin between the type page and the binding of a book.
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