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US 5,806,426 AGranted
Printing method, a machine for implementing the method, and medium thus printed
AssigneeL'oreal
InventorLuc Choulet
Life of this patent
Estimating the term…
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AssigneeL'oreal
InventorLuc Choulet
Estimating the term…
A method of printing a color image on a medium, the method comprising the following steps: separating the image to be reproduced into a composition of colored unit areas, said unit areas being disposed in a predetermined distribution, the color of each unit area being selected from a predetermined set of base colors and a predetermined set of tones of said base colors, the number of tones for at least one of the base colors being greater than or equal to three, the base color and the tone allocated to each of said unit areas being selected so that said composition of colored unit areas visually reconstitutes the image to be reproduced; and printing said composition of colored unit areas on said medium by means of inks whose hues are selected, taking into account the color of said support, so as to be capable of reproducing said base colors and the tones thereof during printing, the tone of a base color allocated to a given unit area being obtained during printing by acting on the proportion of each ink within the corresponding unit area on the medium.
A method of printing a color image on a medium, the method comprising the following steps:
A printing machine including ink application surfaces respectively inked by ink dots respectively situated within unit area disposed in a predetermined distribution so as to reconstitute visually, when printing on a medium, an image that is to be reproduced, the color of each ink dot being selected from a predetermined set of base colors, at least one of said base colors is a non-primary color other than black, each given unit area being covered in ink to a proportion that is selected as a function of the tone to be reproduced, the number of tones being at least three for at least one of the base colors.
A dry offset printing machine including at least one blanket and applicator rollers carrying relief disposed in such a manner as to deposit on said blanket a set of ink dots situated respectively within unit areas disposed in a predetermined distribution so as to reconstitute visually, on printing on a medium, an image that is to be reproduced, the color of each ink dot being selected from a predetermined set of base colors, at least one of said base colors is a non-primary color other than black, each given unit area being covered in ink to a proportion that is selected as a function of the tone to be reproduced, the number of tones being at least three for at least one of the base colors.
A print medium having an outside surface on which an image has been printed that is constituted by a set of ink dots each respectively situated within a unit area disposed in a predetermined distribution, the colors of said ink dots being selected from a predetermined set of base colors, at least one of said base colors is a non-primary color other than black, each ink dot of a given base color filling the corresponding unit area to a greater or lesser proportion, depending on the tone of the base color to be reproduced, the number of tones being at least three, for at least one of the base colors.
Dependencies are inferred from the claim text.