Dot Gain; Error Diffusion; Hsb Model - Oki C 9400 User Manual

A technique where pixels of different colors are placed in close proximity to give the illusion of
another color as perceived by the human visual system.

Dot Gain

During the printing process, toners may spread causing dots on a page to print larger than
intended. This results in darker tones and colors. The problem can be compensated for by
careful adjustment.

Error Diffusion

This is usually associated with halftoning, but can also be used with dither. The error between a
pixel and its intended value is propagated to adjacent pixels to produce a balanced overall
effect. Results may sometimes appear grainy.
Grayscale
Differing shades of gray ranging from black to white. Eight bits of data will produce 256 shades
of gray.
Halftoning
A printed image is composed of dots (or pixels). The spacing of these pixels can give the illusion
of shades or tone. Increasing the spacing of dots lightens the shade so that it tends towards
white (color of the page).
Highlight
This is the lightest part of an image. In the extreme, this would be white.

HSB Model

Colors are defined by hue, saturation and brightness. The dimensions are similar to the HSL
model but the HSB model is related to the RGB system.
HSL Model
Colors are defined by hue, saturation and lightness.
Hue
330