Galley Proof
|
Proof of type from any Source, whether metal type or photo type. Also called checker and slip proof |
Gang
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(1) To halftone or separate more than one image in only one exposure. (2) To reproduce two or more different printed products simultaneously on one sheet of paper during one press run. Also called combination run |
Ganging
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The combining of two or more different printing projects on the same sheet of paper. |
Gate fold
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A three or four panel fold where the two outside panels fold inward to meet in the center. In an open gate fold, there are three panels, the bottom of which is twice the size of the folded panels. In a closed gatefold, there are four panels of roughly equal size where the outer panels are folded inward together. |
Gathered
|
Signatures assembled next to each other in the proper sequence for binding, as compared to nested. Also called stacked |
Gathering
|
Assembling sheets of paper and signatures into their proper sequence. See also collate. |
Ghost Halftone
|
Normal halftone whose density has been reduced to produce a very faint image |
Ghosting
|
Also known as gloss ghosting. A condition occurring during the printing process when vapors from drying ink on one side of a press sheet interact chemically with dry ink or blank paper on sheets in contact with or on the reverse side of the same sheet creating unintended faint images. |
Gilding
|
Mostly in the book arena, gold leafing the edges of a book |
Gloss
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Consider the light reflecting on various objects in the printing industry (e.g., paper, ink, laminates, UV coating, varnish) |
Gloss Ink
|
Ink used and printed on coated stock (mostly litho and letterpress) such as the ink will dry without penetration |
Grade
|
General term used to distinguish between or among printing papers, but whose specific meaning depends on context. Grade can refer to the category, class, rating, finish or brand of paper |
Graduated Screen Tint
|
Screen tint that changes densities gradually and smoothly, not in distinct steps. Also called degrade, gradient, ramped screen and vignette |
Grain
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Paper fibers lie in a similar direction in a sheet of paper. This direction is called the grain. Printing is usually done so that if folding is required, the fold is done parallel to the grain. |
Grain Direction
|
Predominant direction in which fibers in paper become aligned during manufacturing. Also called machine direction |
Grain Long Paper
|
Paper whose fibers run parallel to the long dimension of the sheet. Also called long grain paper and narrow web paper |
Grain Short Paper
|
Paper whose fibers run parallel to the short dimension of the sheet. Also called short grain paper and wide web paper |
Grammage
|
Basis weight of paper in grams per square meter (gsm) |
Graphic Arts
|
The crafts, industries and professions related to designing and printing on paper and other substrates |
Graphic Arts Film
|
Film whose emulsion yields high contrast images suitable for reproduction by a printing press, as compared to continuous-tone film. Also called litho film and repro film |
Graphic Design
|
Arrangement of type and visual elements along with specifications for paper, ink colors and printing processes that, when combined, convey a visual message |
Graphics
|
Visual elements that supplement type to make printed messages more clear or interesting |
Gravure
|
A printing process using recessed areas on a metal cylinder that hold the ink. |
Gray Balance
|
Printed cyan, magenta and yellow halftone dots that accurately, reproduce a neutral gray image |
Gray Component Replacement
|
Technique of replacing gray tones in the yellow, cyan and magenta films, made while color separating, with black ink. Abbreviated GCR. Also called achromatic color removal |
Gray Levels
|
Number of distinct gray tones that can be reproduced by a computer |
Gray Scale
|
Strip of gray values ranging from white to black. Used by process camera and scanner operators to calibrate exposure times for film and plates. Also called step wedge |
Grind Edge
|
Alternate term for binding edge when referring to perfect bound products |
Grindoff
|
Approximately 1/8 inch (3 mm) along the spine that is ground off gathered signatures before perfect binding |
Gripper
|
A series of metal fingers that hold each sheet of paper as it passes through a printing press. |
Gripper edge
|
The side of a piece of paper held by the gripper fingers as it passes through a printing press. Nothing can be printed in this area. |
Groundwood Paper
|
Newsprint and other inexpensive paper made from pulp created when wood chips are ground mechanically rather than refined chemically |
GSM
|
The unit of measurement for paper weight (grams per square meter) |
Gutter
|
A blank space or margin between components on a printed piece or press sheet. |
