How the monitor and the printer produce colors ?
The monitor displays images as pixel matrices (e.g. a 17″ monitor can display 1024 X 768 pixels) and each pixel is made up of three tiny points of light, invisible to the naked eye. The color of the first point can range from black (when it is switched off) to a bright red (when lit up at maximum), passing through all the possible shades in between. The second point ranges from black to bright green and the third from black to bright blue. The three points which make up a pixel are called phosphors: the R phosphor, the G phosphor and the B phosphor. By varying the brightness of the three phosphors, each pixel can be made to assume a series of colors ranging from black (all three phosphors switched off) to white (all three phosphors at maximum intensity). The three phosphors are very close to one another; so close that the naked eye cannot distinguish them one from another and their colors are therefore blended together. The blending occurs at the viewer’s retina, since the three phosph
