Color chart and method for the manufacture of such a color chart

Patent metadata

Field	Value
Publication number	US-12532953-B2
Application number	US-202017642888-A
Country	US
Kind code	B2
Filing date	Sep 7, 2020
Priority date	Sep 16, 2019
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

A color chart ( 1 ) for helping in the choice of a cosmetic product chosen within a range of cosmetic products having different respective hues, the color chart ( 1 ) comprising at least one transparent or translucent support ( 2 ) and, for at least one of said hues, at least one non-opaque, white-colored layer ( 5 ) and at least one non-opaque, colored layer ( 6 ), the color of which is close to that of the hue which it is desired to reproduce, superimposed on the white-colored layer ( 5 ), the white-colored ( 5 ) and colored ( 6 ) layers being printed on the transparent or translucent support ( 2 ).

First claim

The invention claimed is:

1 . A color chart for helping in the choice of a cosmetic product chosen within a range of cosmetic products having different respective hues, the color chart comprising at least one transparent or translucent support and, for at least one of said hues, at least one non-opaque, white-colored layer and at least one non-opaque, colored layer superimposed on the white-colored layer such that the difference in colors between the color as it appears on looking at the color chart as a result of the printed layers and a hue of a corresponding cosmetic product of said range of cosmetic products which it is desired to reproduce, expressed as Delta E 2000, is less than 2, the white-colored and colored layers being printed on the transparent or translucent support, the white-colored layer being in contact with the transparent or translucent support, the colored layer being in contact with the white-colored layer and being printed on the white-colored layer.

2 . The color chart as claimed in claim 1 , in which the colored layer and the white-colored layer are such that the difference in level of coverage between the printed color and an applied layer of the cosmetic product of the corresponding hue which it is desired to reproduce, expressed as contrast ratio CR %, is less than or equal to ±15%.

3 . The color chart as claimed in claim 1 , comprising a plurality of transparent supports, which are connected together the transparent supports being printed with respective colored layers of different colors.

4 . The color chart as claimed in claim 1 , in which said at least one transparent or translucent support comprises a flexible polymer film or a rigid or semirigid polymer sheet, said at least one transparent or translucent support comprising at least one polymer chosen from a polyethylene, a polyacrylic, a polyvinyl chloride, a polyester, a polycarbonate or a polyethylene terephthalate (PET).

5 . The color chart as claimed in claim 1 , in which the white-colored and colored layers form at least one pattern or at least one opening on the transparent or translucent support, in order to make it possible to see through the transparent or translucent support, in zones devoid of white-colored and colored layers.

6 . The color chart as claimed in claim 1 , in which the color chart is in a form chosen from the group consisting of a roll, a bracelet, a forehead mask, a retaining ring, a flower with petals, a detachable page, and a portion of a packaging.

7 . The color chart as claimed in claim 1 , comprising a layer of a varnish covering all of the superimposed white-colored and colored layers.

8 . A range of color charts, comprising a plurality of color charts as claimed in claim 1 , each color chart comprising a range of hues.

9 . A method for choosing a cosmetic product within a range of cosmetic products having different respective hues, by using the color chart as claimed in claim 1 , comprising the following stages:
superimposing the color chart on the skin, observing the color chart thus superimposed on the skin, and choosing the hue and thus the corresponding cosmetic product.

10 . The method as claimed in claim 9 , comprising a preliminary stage consisting of choosing a color chart within a range of color charts, each color chart being as claimed in claim 1 and comprising a range of hues.

11 . An assembly of a range of cosmetic products with different respective hues and of at least one color chart as claimed in claim 1 , or of a range of color charts, each color chart as claimed in claim 1 and comprising a range of hues.

12 . The color chart as claimed in claim 1 , in which the colored layer- and the white-colored layer are such that the difference in colors between the color as it appears on looking at the color chart as a result of the printed layers and the hue of the corresponding cosmetic product which it is desired to reproduce, expressed as Delta E 2000, is less than 1.

13 . A method for the manufacture of a color chart for helping in the choice of a cosmetic product chosen within a range of cosmetic products having different respective hues, comprising the following stages, carried out for at least one of said hues:
a) printing, on a transparent or translucent support and in contact with the transparent or translucent support, a non-opaque white-colored layer, and b) printing, on the non-opaque white-colored layer and in contact with the non-opaque white-colored layer, a non-opaque, colored layer, the white-colored layer and the colored layer being printed so as to be superimposed to one another, the color of the colored layer superimposed on the white-colored layer being such that Delta E 2000 between the color of the colored layer superimposed on the white-colored layer and the color of the at least one of said hues is less than 2.

14 . The method as claimed in claim 13 , in which at least one of the thickness of the white-colored layer or the color of the colored layer are chosen so that the difference in level of coverage between the printed non-opaque white-colored and non-opaque colored layers and an applied layer of the cosmetic product of the corresponding hue, expressed as difference in contrast ratio CR %, is less than or equal to ±15%.

15 . The method as claimed in claim 13 , stages a) and b) being carried out in this order so that step b) is carried out after drying the non-opaque white-colored layer.

16 . The method as claimed in claim 13 , further comprising employing, for the printing in stages a) and b), an inkjet printer comprising a white ink.

17 . The method as claimed in claim 13 , comprising the following stages:
(a′) applying a cosmetic product of one of said hues to an evaluation device comprising at least two regions respectively colored white and black, (b′) carrying out at least one measurement on the at least two regions, so to calculate the level of coverage and the color of the hue on the evaluation device, (c′) carrying out at least one printing for the hue, according to steps a) and b) of claim 10 , (d′) positioning the transparent or translucent support comprising the printed layers on at least the region colored white of a virgin evaluation device different from the previous evaluation device and carrying out at least one measurement on the non-opaque colored layer superimposed on the white-colored layer in order to calculate the color and optionally the level of coverage of the colored layer superimposed on the white-colored layer on the transparent or translucent support, (e′) comparing the levels of coverage calculated in stages b′) and d′), so as to calculate the Delta E 2000 or the contrast ratio % CR between the hue of the applied cosmetic product and the printed color, (f′) choosing, for at least said hue or for an assembly of hues, a thickness of the white-colored layer and/or adjusting the printing color of the colored layer so that the Delta E 2000, between the hue applied to the evaluation device and the color of the colored layer superimposed on the white-colored layer, is less than 2 or that the difference in contrast ratio % CR is less than or equal to #15%, in order to produce the color chart.

18 . The method as claimed in claim 13 , further comprising a step of addition of at least one layer of varnish to the colored layer after step b).

Assignees

• Oreal

Inventors

• Bchir Olfa
• Bonnefond Fanny
• Letreulle Anne-Catherine
• Vincent Francoise

Classifications

• G09F5/04 Primary

  Cards of samples; Books of samples (packages comprising articles attached to cards, sheets, or webs for removal therefrom B65D73/00) · CPC title

• B41M3/005

  Colour cards; Painting supports; Latent or hidden images, e.g. for games; Time delayed images · CPC title

• A45D44/005 Primary

  for selecting or displaying personal cosmetic colours or hairstyle · CPC title