Raster
To render an image, pixel by pixel, vertically and horizontally
Raster image
See bitmap image
Raster Image Processor (RIP)
A device that translates data into dots or pixels
Ream
A quantity of paper equivalent to 500 sheets
Resolution
Refers to the number of pixels an image expressed in pixels per inch (ppi) or dots per inch (dpi); the higher the number, the sharper the image
RGB
Refers to red, green, blue - the additive primary colors used for color video display as on a computer screen
Rich Black
A darker and deeper black color created by combining other ink colors with black ink. The values to create Rich Black is usually 40% Cyan, 30% Magenta, 30% Yellow, 100% Black
Ruleup
A map or drawing showing how a printing job must be imposed with a specific press and sheet size; also called Press Layout