Halftones
Halftones are dots of a specific shape, such as an ellipse or a circle. Halftones dictate how much of each color goes on the material at press time. Varying how large or small the dots are determines the actual color printed ...
In conventional printing, halftones are created by photographing an image through a screen. The screen frequency, measured in lines per inch, determines how many dots are used to make each spot of gray.
Measure of resolution for halftones.
Luminance: One of the components of an HSL (hue, saturation, luminance) RGB (red, green, blue) image on a video monitor. It is the highest of the RGB values plus the lowest of the RGB values, dived by two.
When generating screens or dots for halftones, each dot is created from the smaller dots that are determined by the dpi resolution. Imagesetters come in many different sizes and formats.
The stages of the reproduction process that precede printing, when halftones, color separations, and printing plates are created.
Process color. The four color pigments used in color printing: cyan, magenta, yellow, and black (CMYK).
levy screen (crossline or contact screen
a glass or plastic screen with very fine cross hatching rulings used for translating continuous tones into halftones.
LIFO
acroynm for last in, first out.
Screen RulingThis refers to the number of lines or dots per inch in both directions on a contact screen used to make halftones or separations. Screen rulings are available from 65 lines per inch to 200 lines per inch.
 See also: Print, Camera, Type, Halftone, Pixel
  
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