Printing and Color terms Flashcards
Litography
A print process based on the principle that grease and water do not mix. A stone or plate is drawn onto using a grease pencil the stone/plate is chemically processed to make the image area attract ink. When printed, the stone/plate must be kept wet with water while being printed so it does not attract ink on any area but the image area. A litograph is planer, meaning that the image area is not raised or lovered. In offset litography, the inked plate is offset onto a rubber blanket before being printed onto the paper.
intaglio
A print process in which a design is engraved onto the surface of a plate so that when the ink is applied and excess wiped off, ink remains in the groves and is transferred to paper.
silkscreen
A print process in which mesh cloth is stretched over a heavy wooden frame and the design, painted on the screen in touche, affixed by stencil, or exposed onto the screen photographically, is printed by having a squeegee force the color ink through the pores of the material in areas not blocked out by the glue sizing.
Pantone Matching System
A color-matching system of printers ink colours used in the United States .
Pantone process color
A color created from mixtures of CMYK that seek to match the Pantone color pallet as closely as possible.
spot color
the use of a specific color of ink (usually Pantone color) vs.a color that has been created through a series of dots of various colors.
halftone
A screen is used to reduce a continuous tone image into a series of dots.
duotone
A screen is used to reduce a continuous tone image to two series of dots.
overprintinting/ surprinting
Printing over already printed areas.
dropout
Portions of originals that do not reproduce, especially colored lines or background areas. (example- if you wish to have yellow type on a blue shape, the yellow type must dropout of the blue shape. In other words, there must be a hole in the blued shape which is the shape of the yellow text. That way, the yellow text prints onto the white paper and looks yellow, vs. printing on top of the blue, which would make it look green.)
tint
A color to which white has been added.
shade
A color to which black has been added.
tone
A color to which grey has been added.
RGB
The primary colors of the light. The color mode used if your image is to remain on the monitor (usually for web).
CMYK
the primary colors of the subtractive process. the colors used for printing in the 4 color process. Black (K) is added to this mix because there is not a total purity of inks.
