GRAFISCHE FOTOAUFZEICHNUNG IN FARBE MIT BELICHTUNGSVORPLANUNG

A method of plotting in color with a photoplotter and color film employs a technique of budgeting the amount of exposure in each of the color sensitive emulsion layers of the film. An optical exposure head in the plotter projects a beam of colored light onto the film and relative movement of the film and head causes a spot of light generated by the projected beam to move to various positions on the film and expose the film in accordance with the color components of the beam. The optical head changes the color components to produce beams of different colors and exposes the film accordingly. The total exposure of each emulsion layer by all of the color components is limited to the exposure capacities of the layers by restricting the colors that are produced by the projected beams.