Abstract In the method of producing a color reproduction of an original on a substrate in halftone dots of three different color superimposed layers of transparent material having predetermined thicknesses, in which, D1, D2 and D3 respectively denote the predetermined thicknesses of the first, second and third transparent color material layers, and T11 denotes the transparency for the first primary color of a unit thickness of the first layer, T22 denotes the transparency for the second primary color of a unit thickness of the second layer, and T33 denotes the transparency for the third primary color of a unit thickness of the third layer, X1, X2 and X3 respectively denote the occupancy area of the halftone dots of the first primary color in the unit with respect to said original, the occupancy area of the halftone dots of the second primary color and the occupancy of area of the halftone dots of the third primary color, and d11, d22 and d33 respectively denote the transparency of the first primary color of the halftone dots of the first color with respect to the thickness of each of said areas, the transparency of the second primary color of the halftone dots of the second color and the transparency of the third primary color of the halftone dots of the third color, the area of the halftone dots of every color are determined by the equations, (T11)D 1- X1 + X1. (d11) (T22)D 1 - X2 + X2. (d22) (T33)D 1 - X3 + X3. (d33).
A color reproduction method wherein the colors of an object are reproduced on a substrate in the halftone dot of a transparent color material having a predetermined thickness with respect to each of three colors, comprising the steps of: establishing the thickness (D1) of the first layer, the thickness (D2) of the second layer and the thickness (D3) of the third layer of a transparent color material in said three colors in cases where the colors of said object are reproduced by superimposing three layers of said transparent color material; determining the transparency for the first primary color (T11) of a unit thickness of said first layer, the transparency for the second primary color (T22) of a unit thickness of said second layer and the transparency for the third primary color (T33) of a unit thickness of said third layer; determining the transparency for the first primary color (d11) of the first primary color halftone dot whose thickness is predetermined by a transparent color material in said three colors, the transparency for the second primary color (d22) of the second primary color halftone dot whose thickness is predetermined by said color materials and the transparency for the third primary color (d33) of the third primary color halftone dot whose thickness is predetermined by said color materials; determining the areas of occupancy (X1),(X2) and (X3) of a halftone dot in said three primary colors respectively in said object from the following formula: (T11)D 1-X1 + X1(d11) (T22)D 1-X2 + X2(d22) (T33)D 1-X3 + X3(d33) and forming a halftone dot in said three primary colors whose area corresponds to said occupancy of area on a substrate.
Claim 2
Dependent Claim
274 words
A color reproduction method wherein the colors of an object are reproduced on a substrate in the halftone dot of a transparent color material having a predetermined thickness with respect to each of three colors, comprising the steps of: establishing the thickness (D1) of the first layer, the thickness (D2) of the second layer and the thickness (D3) of the third layer of a transparent color material in said three colors in cases where the colors of said object are reproduced by superimposing three layers of said transparent color material; determining the transparency for the first primary color (T11) of a unit thickness of said first layer, the transparency for the second primary color (T22) of a unit thickness of said second layer and the transparency for the third primary color (T33) of a unit thickness of said third layer; determining the transparency for the first primary color (d11) of the first primary color halftone dot whose thickness is predetermined by a transparent color material in said three colors, the transparency for the second primary color (d22) of the second primary color halftone dot whose thickness is predetermined by said color materials and the transparency for the third primary color (d33) of the third primary color halftone dot whose thickness is predetermined by said color materials; determining the areas of occupancy (X1),(X2) and (X3) of a halftone dot in said three primary colors respectively in said object from the following formula: (T11)D 1-X1 + X1(d11) (T22)D 1-X2 + X2(d22) (T33)D 1-X3 + X3(d33) and forming a halftone dot in said three primary colors whose area corresponds to said occupancy of area on a substrate.