MXPA97001593A - Method for the obtaining of a tabulation that allows representing a range of colors reproducible with exacti - Google Patents

Abstract

A method is described to obtain a tabulation that allows to represent a range of colors that can be reproduced with exactitude, which is obtained by applying a volume of color, calculated according to the following expression: T = (10V) 1/2 where : T = Is the color tone in percentage (%); V = Is the volume of the color in volumetric units

Description

"METHOD FOR OBTAINING A TABULATION THAT ALLOWS TO REPRESENT A RANGE OF REPRODUCTIVE COLORS WITH ACCURACY" FIELD OF THE INVENTION The present invention refers to the technique for the equalization and selection of colors within the Coloring Industry, and more particularly it is related to a method for obtaining a -diagulation allows to represent a range of colors reproducible with accuracy.

BACKGROUND OF THE INVENTION It is well known that in the current technique, various methods for obtaining and matching colors are known, which allow to obtain color tones that are very similar to the previously specified color tones; however, the color tones obtained during the matching process do not satisfy 100% of the required color tone, since during the final adjustment phase of the color, a subjective comparison is made when comparing the color that is used. is getting, against a color that is taken as reference. The comparison is made using the criteria of a specialist in color matching, or using a computerized color comparison system. On the other hand, in the Graphic Arts Industry, various printing methods are known, among which is the method of printing through piano colors, as well as the method of printing through color process. The method of printing through flat colors requires opaque inks of solid colors, each of which results from a mixture of different pigments, which allows obtaining a great diversity of colors; while the method of printing through color process requires four standard transparent ink pigments, namely yellow, magenta, black and white. In the method of printing through process colors, small dots or half-tone screens are generated, in order to form a printing mesh for each color, which overlap each other. Both in the method of printing through flat colors, and in the method of printing through color process, obtaining and matching color tones is a subjective problem, since both methods are based on a previously printed reference to define the required color, without this being a guarantee that the chosen color will be the color that will be obtained at the end. In the case of printing flat colors, if a slightly lighter color is desired, white pigment is added, while to obtain a darker shade, black pigment or one or more dark pigments is added. When the printing is already in press, you can get more clear shades of solid flat color inks, using a screen of dots or screens on the paper, which allows the whiteness of the paper to be shown a little more. With regard to printing through process colors, the various combinations of standard color process inks (yellow, magenta, cyan and black), when printed in different percentages of dot sizes or screens, allow to create an entire range of colors that make up the scale of colors that can be obtained by using this printing method. During the method of printing through process colors, the press spreads the transparent inks of the colors yellow, magenta, cyan and black on the paper as small dots or half-tone screens, each of which varies in size from 1 to 99 percent. In general, the sequential order of application used during printing is black, cyan, magenta and yellow. It is important to mention that the range of colors that can be achieved by means of the combination of the four standard process colors, is more limited than the range of colors obtained with the solid colors of ink, so when using the process color printing , you will always get colors that do not even come close to many of the solid colors of the inks, which implies that it is only possible to obtain the simulation of many solid colors of inks using the four process colors, which necessarily leads to the dissatisfaction of the end user. Currently, the specialists who print in standard process colors, make the color selection using color samples printed with samples of solid colors, which as already mentioned, leads to the simulation of the required color tone; so the color obtained by printing in process colors, does not adequately satisfy the requirements of the end user. As a consequence of the foregoing, it has been sought to eliminate the drawbacks of the methods of the prior art, and to provide a method for obtaining a tabulation which allows to represent a range of colors that can be reproduced with exactitude, which allows obtaining the necessary tools for make the selection of the color in a simple and practical way, as it can be a catalog or sample of colors, besides allowing said colors to be reproduced faithfully, during the application of any printing method, or, in any application that requires the selection and obtaining of colors that are reproduced with exactitude.

OBJECTS OF THE INVENTION Taking into account the defects of the prior art, it is an object of the present invention to provide a method for obtaining a tabulation which allows to represent a range of reproducible colors with accuracy, which allows to reach obtain a catalog or color chart to select these colors in a simple and practical way. It is still another object of the present invention to provide a method for obtaining a tabulation that allows to represent a range of colors that can be reproduced with exactitude, which in addition to making it possible to obtain a color sampler, allows said colors to be faithfully reproduced, either using flat colors or using process colors. A further object of the present invention is to provide a method for obtaining a tabulation that allows to represent a range of reproducible colors with accuracy, which allows to clearly show the difference between color * and tone. The above objects, as well as other objects and advantages of the invention, are achieved by a method that basically comprises obtaining a tabulation < It allows us to represent a reproducible color gamut with accuracy, which is obtained by applying a volume of color, calculated according to the following expression: T = (10VJ1 / 2 (i) where: T = Is the color tone in percentage (%) V - Is the volume of color in volumetric units DETAILED DESCRIPTION Referring now in particular to a specific embodiment of the present invention, the method for obtaining a tabulation that allows to represent a range of colors reproducible with accuracy, and that is described below, basically comprises the elaboration of a tabulation to obtain a catalog or color chart that allows us to select, obtain and match colors, from the application of a mathematical expression that we will define forward, which allows us to obtain through arithmetic calculations, a series of values for each of the primary colors used in the method of to present invention, which are transparent pigments of balanced primary colors. In the Jitograf co system, any painting shows 100% of its "tone", only when it is deposited in the form of a uniform "thick" film on a white surface. This thickness or film height is defined as 1 ROC. In the lithographic system, a "screen" has the property of giving to our sight the same tone as a layer of paint of a thickness corresponding to the percentage of the screen. At 100% screen corresponds a layer thickness of 1 ROC; and, 0% screen corresponds to a layer thickness of 0 ROC. The yellow color used in the present invention is the primary yellow color with a density of 75% and a layer thickness of 1 ROC. The magenta color employed in the present invention is the primary magenta color with a density of 50% and a layer thickness of 1 ROC. The color used in the present invention is the primary color with a density of 25% and a layer thickness of 1 ROC. To obtain the color catalog or sampler of the present invention, the mathematical expression defined by: T = (10 V) i / 2 (i) is applied where: T = Is the color tone in percentage (%) with limits from 0 to 100. V = Is the volume of color in volumetric units with limits from 0 to 1000. To obtain the catalog or color chart using the method of the present invention, two primary colors and black are used, obtaining in this way the original bright colors, since they do not incorporate white color; as well as tones of said original colors, using two primary colors, color-black and white.

The mixture of the primary colors is done according to the following sequence: l) .- RED COLORS. The red colors are obtained by mixing the primary yellow and magenta colors. If we define that (a) is the volume of yellow color and (b) is the volume of magenta colorBy varying the quantities of each of them, the following is obtained: If (a) is the same as (b) a maximum binary red color is obtained. If (a) is greater than (b) a ro or yellowish color is obtained. If (b) is greater than (a) a ro ro or agentose color is obtained. 2) .- GREEN COLORS. The green colors are obtained by mixing the yellow and cyan primary colors. Defining that (a) is the volume of yellow color and (b) is the volume of color cían, if we vary the quantities of each of them, the following is obtained. - If (a) is the same as (b) a maximum binary green color is obtained. - If (a) is greater than (b) a green color is obtained. - If (b) is greater than (a) a cyanous green colo is obtained. 3). ~ VIOLET COLORS. The violet colors are obtained by mixing the primary colors magenta and cyan. Defining that (a) is the volume of magenta color and (b) is the volume of color cían, if we vanamos the quantities of each one of them the following is obtained: - If (a) is the same as (b) we obtain a maximum binary violet color. - If (a) is greater than (b) a rich violet color is obtained. - If (b) is greater than (a) a cyanous violet color is obtained. The method for obtaining a tabulation which makes it possible to represent a range of reproducibly accurate colors of the present invention is based initially on the combination of the three primary colors, namely yellow, magenta and cyan, to obtain a color to 100%; to subsequently obtain the same color at 100%, using the method of the present invention, but mixing exclusively two primary colors and the color black. To the color thus obtained, white color is added to scale it and obtain shades of the original color, which at an industrial level results in a considerable economic saving, since in this way only two pigments of two primary colors are used, instead of three pigments of three primary colors.

The method for obtaining a tabulation that allows to represent a range of colors reproducible with accuracy of the present invention, basically comprises the following steps: 1) .- Define a color at 100%, formed by the combination of primary colors yellow, magenta and cían, by selecting the percentage of the tones of each color in the combination of primary colors. 2) .- Obtain the equivalent volumes of the three primary colors that form the color tone - required by applying the equation: T2 V = (II) 10 3) .- The color volumes obtained in the previous step are added and obtained the percentage of each of them. A total volume reference value is set, which may be 1, 10, 100, 1000, etc., preferably 1000 being used, and the percentages obtained are applied to it. 4) .- The smaller volume obtained in the previous step becomes reference and equal volumes of the other two primary colors are made. 5) .- The equivalent gray color is determined for the mixture of equal volumes of the three primary colors of the previous step. To carry out the obtaining of the equivalent gray of the mixture of equal volumes of the three primary colors, through experimentation it has surprisingly been found that the color Cyan at 100% of tone to pass 75% of light and retains a 25% light; the color Magenta at 100% of tone lets pass 50% of uz and retains 50% of light; and, the color Yellow to 100% of tone of to pass a 25% of light and retains a 75% of light. With these experimental data, the equivalent black color volume that retains 25% light for the cyan color, the equivalent black volume retaining 50% light for the magenta color, and the color-black volume is calculated. which retains 75% of light for the yellow color, applying equation II. Once the color-black volumes have been obtained for each primary color, each volume of black color is complemented by the volume of white color required to obtain 100% volume. The volumes of black and white color that are found correspond to mixing them with the equivalent gray colors for each primary color. The black volumes and the white-colored volumes, which correspond to each primary color, are grouped and summed so that% is obtained. Black color volume and% White color volume corresponding to gray equivalent color for the mixture of the three primary colors in equal volumes. 6) .- The equal volumes of the three primary colors obtained in the step are added, and multiplied by * the% Volume of black color and% Volume of white color obtained in the previous step, to obtain the equivalent gray volume correspondent. In this way we have reduced the mixture of the three primary colors of step 1, to two primary colors and to the equivalent gray that corresponds to the mixture of equal volumes of the three primary colors obtained in step 4. 7) .- The volume of white color of the equivalent gray is subtracted, in such a way that the volumes of the mixture of the antepor step are reduced to two primary colors and black color. The total volume of the mixture is obtained and the percentage of each color is obtained in it, thus defining the present quantities of the 2 primary colors and the black color in the mixture. The volume values thus obtained correspond to the color at 100% of the selection of the color tones of the three primary colors of step (1), not including the volume of color-white. 8) .- Apply equation I to the volume values found in step 7 to determine the% tone for the two primary colors and p >for the black color. 9) .- Set a% color tone. 10) .- Obtain the volume corresponding to the color tone selected by applying Equation II, taking as a base a total reference volume, which may be 1, 10, 100, 1000, etc., preferably using 1000, such so that the volume of white color present in the mixture is determined by complement. 11) .- Obtain the quantities of the primary colors and the black color present in the mixture of the previous point, using the percentage values for each color-obtained in step 7. 12) .- Add the volume of white color and the volume of primary primary color obtained in the previous point. To the volume thus obtained, the reciprocal is calculated and multiplied by the reference volume, in such a way that a factor q? E will remain constant. 13) .- The volume of white color obtained in stage 10, and the volumes of the two primary colors and the black color obtained in stage 11, are multiplied by the factor-obtained in the previous step, obtaining in this way the final volumes of black, white and the two primary colors. 14) Obtain the equivalent tones of the two volumes of primary colors and the volume of black color of the previous stage, applying formula I. 15) Finally, tabulate the result obtained in the previous step, and repeat the method as many times as necessary. The method of the present invention is applied to different initial combinations of the three primary colors Yellow (A), Magenta (M) and Cyan (C), reducing at the end the combination of said primary colors, to a combination of two primary colors and Color Black (N), according to the following: COMBINATION FINAL INITIAL COMBINATION (1) fi + M + CA + M + N (2) M + A + CM + A + N (3) A + C + MA + C + N (4) C + A + MC + A + N (5) M + C + AM + C * • N (6) C + M + AC + M + N Table 1 shows an example of the different tabulations obtained following the procedure described above, using the three primary colors (A + M + O of the first combination, reducing at the end the combination of colors to two primary colors and black (A «• M • * N). Primary color combinations (2) to (b), tabulations similar to those shown in Table 1 are performed, applying the method of the present invention. 100 TO 80 70 60 50 40 30 20 10 MÍO ÍO MY OWN MY OWN MÍO Mi * AIO MS. NO AIO. MS. NO AIO. M5.N0 A 10. M5.N0 AtO. MS. NO AIO. MS.NO AIO. MS.N5 AIO. MO.NS - » AIO MO.NS A 10. MO.NS 100 00 80 70 ßo SO 40 30 20 10 , X 111 (1. M 441.16 A 100. MtO.NS 05.MM.N5 A7S.M45.NS AIS.Mtt.NS AH.M ~ t.MI A4S.M2S.Nt AIS.MM.NO A25.MI5. N0 AIS.MIO.NO A 10. Mli NO AMt »MM» CI2 AIM. MM.NIt AM.M5O.N40 A 71. M 45. N M A05.M40.Nt tt.MM.NI A4S.M7S.NS AM.M20.Nt AM.MIt.NI AIÍ. MY OWN. NI «MlHIMltlI AIM. MM.NII Att. MM.NM Afl < M4I.NII AM.M3S.Nlt A5t.MM.NI0 «4t.M2t. I0 35.M20.NS A7S.Mlt.Nf Ali. MY OWN. Ni AI0.M5.N0 t IM »II M 4«. • 24 AIM. M5S.NI3 AIS.MM.NM A7S.M45.N II AtS.MIS. IS I5.MM.NI0 4S.M2i.NI0 AIS. MM. NIO TS. IS. S AIS.MIO.NS Alt.MI.Nt A Mt4M »CJO AIM. Mtt.NM AIS.M4t.NM A7i.M40.N2t t9.MJ5.N2t ASS.MM.NIS A4S.M2S.NIS A 15. MM.NIt A2S.Mlt.NI0 A II • M 10 • NS Alt «MI« NEITHER Wtt Mll.'M AIM. MM.NM AIS < M4S, NM A7S.MM.N2S AtS.M15.N2S ASS.MM.NM A4S.M25.NI5 AIS.MtO.NIS AtS.MI5.NI0 AIS.MI0.N5 Alt.Mt.NS 4Mt »» IM4l ~ 41 AIM . M45.H4S A tS. M.NM A7i.MlS.NM tS.M10.NM ~ -A55.M2S.NtS- A4S.MM.Ntt 19 i M IS • N II A25.MII.NI0 1S.MI0.N5 AIO.MI.NS AM » MM * C4 «AIM. MM.NM TO 15. MIS. N 45 AX.MM. 4t AIS.MI5.NM • UiMNiNH A4I.M7I.N70 A3S. I5.NM A2S.MI0.Nlf li.MS.NIO Alt.Mi.NS IMIMMNiCN AIM. MM.NM IS.MH.NM A7t.MM.N4l AtS.M70.N4t A St. Mtt.NM A4S.MIS.N75 AH.MIO.NM A75.MI0.NI5 Atl.MS.Ntt AIO.MS.NS. UMIMHU'H TO 100. MO. N / 0 AIS. MO.N M A 71. M 0, H 50 A OS. M O N 15 AM. MO. N JS A 45. M O. N .10 A 35. M O. N? 2S.M0.N 15 A 15. MO.N 10 A 10. MO.NS. M 711, N 5 A0S.MM.N5 A 75. M 50. N 5 A OS. M 45. N i A50.M3S.NS A4S.MM. NS A3S.M2S.N0 A25. IS. NO TO 15. MIÓ. NO A 10. M5.N0 t Wt 4 M M »C 14 IM. .MTß.NIt A I *. MM.NM A7l.M5t. lt A05, MM.NM AM.M3S.NS A4S.MM.NS Alt.Mti.NS Ati.MII.NI AII.MIO.NI A 10. MI. NI Mt + MTttlll AIM. ro.Ntt AtS.MM.NII II.MM.NII AM.M4S.Nlf AM. M.NM A45.MM. IO A3S.MtS.NS Att. One thousand. Nt AtS.MI0.N5 A 10. My .NI »MW» ti * • 4 V 2 * IMi Mtf. Nt5 AtS.MS5.N75 A7I.MM. 71 AM.M40.Nli AM.MlS. lS A4I.MM.N It A35. M20.N It A 25. IS. NS A II. M 10. N 5 AII.MI.Nt 4 MO t M rt »C H IM. Mt.NTS AIS.M55.NM A79.M4S.N2I AM.MM.N2t AM.MlS.N2t A4t.M2S.N IS AIS. MM.N A 25. M 15. N 10 A II. M 10. N S AII.MI.NS A IM 4 M ít »42 IM. MM.N4Í AtS.MSS.N15 AltlM4S, NM AM.MM.N2S AM.MM.NM AM.M2S.N20 A15.M20.NlS A 25. Thousand. NIO A IS < M 10 > NI Alt «MI .NI A m 4 ti" t 4 C 4f IM. M55.NS5 AIS.MM.N45 Alt. MM.NM AM.MSS.NM AM.MM.Ntf A4t.MtS.N20 A1S.M70.NI5 AtS.MIt.NII A IS.M 10. N 10 Alt. MI .Ni tMt »» | 1t4 M AIM MM. N 15 AI5.M4S 55 Alt.M15.N4t AM. MM.NM AM.M2S.NM AM.MM.N75 A 15. MIS N20 Atf.Mlf .NIS A IS M 10. NM AII.Mf .Ni 4 Wtt 'KCS! AIM. • • .til AI5.Mli.NM A70.MM.N55 AM .M7S.N4S AM.MM.NM 4t.MII .NM AM.M 10. NM A7S.Mlt.NM lt.MS.N 10 Att.Mf .NS A Wß «AMO» C 7 * A IM., MO. NUO A 70. MO. N 05 A «O. M o.N 55 A .MO N N AM.MO. 15 A 30, MO NM ATS MO. N20 A 15. MO.N 15 A5, MU. Neither IIHK MU.I «A 100. MM.NIO AIS. M70. S A 70. MM. 5 TO HIS M 50. N 5 AM.M40.NS AM.M1S.N5 AM.M2i.N0 A2S.M70.N0 AIS .MIS. NO AI0.M5.N0 ANM »MM» lt AIM. MM.NIt AM.MM.NM A7t.MM.NM AM.MM.NM AM.MM.NM A4t.MM.NS AM.MIS.NI A II. Mil .Ni Alt.MI.NI 4IM «MM« 14 AIM. MM.Ntl AIS. MM.NM Alf.MiS.NIS AM.M4t.NM AM.MM.NM AM. M.NIt AM.M2S.NS Atl.Mtt.NI AII.MIttNS Alt.MI.Nt AMf «MN» C ~ l AIM. M 71 < N M AIS.Mt5.N2S A70.MSt.N7S AM.M45.N2t AM.MM.NII AM.MM.NIS AM.M25.NI0 A 2S. TO.NS Alf.MII.NS AIO.MI.Nt AtMtMMtCAt AIM. M 75 • N M AIS.MtS.NM A7t.Mf5.NM AM.M4i.N2l AM »M3i» NM AM.MM.NIS AM.M2S.Nlt A2S.M2t.NW AI5.MI0.NS A 10. Mi. NI AMtt MtCtl AIM. MIS.NM AIS.MM.N4S AIO.MSO.NM AM.M4S.NM «MiHD.NH AM.MM.N20 AM.MtS.NII A2S.MIS.NM A 15. M 10. N 10 AS.Mi.NS AMt4 »IM« M AIM. M70.NIS AI5.M5S.NSS A7t.MM.N4S I0.M40.N1S S0.M1S.NM AM? M2t.N2S AM.MM.N7t AtO.MII.NIi A II i M It. NM AI.Mi.NI (M »HH <I.IM AIM MM.NM AIS.MSttNtS A7I.M4S.N5S A55.M15.N41 A4S + MM.NM A .M2S.HM AM.Mtl.Ntt AM »Mll? NM A II • MM • NM AI.MI.NI NM4KIM4i: ll AIM MM.NM AM.MM.NM Att.MlS.NIS ASO.MM.NSS 4S.MtS.N4l AM. MM.NM AM. MIf .NH AM.MIO.NM A II «Mi. NI * AI.Mf .NI \ HM < MWItl'M A UN I D A 71. MO NIS AOO. MO. N 70 A Sil. MO. A40.M0.N5O AIS, MO.N 40 A2S.M0.NM AM.MO. N7S AIS, MO.N 15 AS. MO.NIO ? 100 »M« NI * f * A 100. u ßo • NIO 15. M 76. N 5 ATO. M05 NS AM. M55.NS A M • M «S. N S A 40. MIS. N5 AMtMM.NS A2S.MM.Nt AIS.MIS.NO AI.MS.NO AIM »MM» C | I AIM.MM. Nlt AM.M7I.NM A Tt. M.NM AM.M5t.NM AM.MM.NM AM.M3S.NS AM.M3t.NI AM.MM.NI AII.MIi.Nt Ai.MI.Nt AHM »MM» t: i ~ > AIM.MM, Ntl AIS.M7I.NM ATI.MM > N20 AM.MM.NN AM »M4t» N »A40.M3S.N M AM.MM.NM AM.MM.Ni A II • M II. N I AI.MI.Nt A IM 4 M M «Jt AIM.MM • Nli AIS. TS.N ATt.MM.NtS AM.MM.N70 A M. M M • N II A40.M15.NIS AM.MtS.NM A20.M20.NM A II. Thousand «NI Ai. My. I IMl * t »i.'4f AIM .MIS. N45 AIS.M7t.N40 ATI.MM.N »AS5.M50.N7S Ali, MM.NM A t M 15 • N tt AM.MtS.NII A7I.MM.NM A IS • M II. N i Al. I. Neither "WiMNU'll AIM" MIS • NM AM.M7l? NS0 A7I.MIO. 40 A SS. M St • N JS A 4S. M.NM AK.MM.NM AM.M1S.NIS Atl.MM.NII A It. M It. N 10 AI.Mi.NI A IM »» l M «11 AIM • MIS • 7S AM.MIS.NM AIS.MSS.NM A SS • M 411 N tt A4S» MJSiM * ß A15.MM.N7S AM.Mtl .NM «NiHIliNII A II. Mtt.NM AI.MI.NI IM4 M4C I AIOO.MM • NOS AM.MM.N73 AtS. MM.NM AM.MM.NM A4i »MM» N l AM.MMtNM AH.MM.NM AMtMII.NM A II. One thousand. M AI.MI.NI AMM4MM4CII AIM.MM .. NH »AI5.M4S.NtS A Yes. MIS. NTO TO 45. MM.NM AM + MM.NM AM.MM.N40 A2i.MII.NM Alt.MM.N »AM.MM.NM AI.MI.NI A ln «M *» »?: *« AM.MO IM A4S.M0.NM A 0. MO.N 75 A35.Mt.N0S AM.MO. NSI ATS. MO.N 15 A20.M0.N3t Al5.MI.N7f A M.Mt.NTt A5.M0. lt To IIHI, To IIMI. I '| «A 100 • M IM • N 10 A M • M M. N 10 TO TO. M 70. N 5 A 55 • M 55. N 5 A 45. M 45. N S AM.MM.Ni AM.MM.Nt AM.MM.Nt lt. It.Nt At.Mt.NI IM MU 4I. '»AIM.MIM.NM AM. MM. It A7t.M7t.NM ASS.MM.NM A4t.M4l.NM AM.MM.Nt AM.MM.Nt AM »MM» MI AII + MII.NI AI.MI.Nt A IM M loa »i: M AIM.MIM.NM AM.MM.N7t Arl + MIt.NM Ail.MSS.NM AIS.M4t. H A3t.M3t.NM AM.MM.NM AM.MM.Nt II + MII.NI A | .MI > Nt IM »MIM» '«IM.MIM.N40 AM.MM.N1S Ali.MIS.NtS ASS.M55.N7S Atl.MlliNlt AM.Mli.Nli AM.MM.NM AM.MM.NM A II • M II • NI Ai. i. I 4 IM • II II »4 C M AIM.MIM.NS5 AM.MM.N45 AIS. MIS. NM A SS < M SS. N * t A4l.M4i.N2l AM.MSS.NM AM.MM.NM AN. MM.NM A M • M IS. N I AI.MI.NI 'M) UWtl.? A IM • M IM. N 70 AM.MM.N5S Ali.MH.N45 SS.MSS.N »A4S.M4i.NM A3SiM3S.NI * To you. MM.NM AM. MM.NIt A tf. M It. NM IM.MI.NI A IM «II | M 4 VM IOP.MIOO.NM A7i.M7l.N7t AM.MM.NM AM.MM.N4t AM.MM.NM AM.MM.NM Ati.Mtl.NM AM .MM.NIt A It < M M • N M Al. I. I AM «MlM» t-.M AM.MM.NIOO To you. MIS. NM AM.MM.NM A4S.M4S.NSt Ati.MMtNM AM + MM.NM AH.Mtt.NM AII.MII.NM Alt.MW.NII Al. I. NI A IW.IIIWtCM AM.MM.NMO A4i.M4S.NM AM.M40.NTS Alt. MM.NM A 21. MM.NM AM.MtO.N40 All.Mli.N3S AII.MIS.NtS A 10. M 10. N IS A5.MS.NH > ion »c ion AO.MO.NIOO At.MO.NM Af.Mt.NtO AI.M0.N70 At.MI.NM AO.MI.NSO AI.M0.N40 Af. MI.N30 AO.M0.N7O AO.MO.Nlt In the first column of Table 1, the different combinations of the required color tones are shown, represented by the letter "fl" for the yellow color, the letter "M" for the magenta color and the letter "0" for the color color In the second column, the values obtained with the procedure already described are shown, indicating at 100% of tone, one of the two primary colors, which will be the main primary color, indicating in addition the values obtained for the other primary color, thus as for the color black repreened with the letter "N". In the third column, the values obtained with the method of the present invention are shown, indicating the values obtained at 90% of the color tone of the main prirnapo, indicating also the values obtained for the other primary color, as well as for the black color. In the quad + column, the values obtained with the procedure of the present invention are shown, indicating the values obtained at 80% of the primary primary color tone, indicating in addition the values obtained for the other primary color, as well as for the black color In the fifth column, the values obtained with the method of the present invention are shown, indicating the values obtained at 70% of the tone of the primary primary color, indicating in addition the values obtained for the other primary color, as well as for the black color. In the sixth column, the values obtained with the method of the present invention are shown, indicating the values obtained at 60% of the tone of the main primary color, indicating also the values obtained for the other primary color, as well as for the black color. In the seventh column, the values obtained with the method of the present invention are shown, indicating the values obtained at 50% of the color tone of the main color, indicating also the values obtained for the other primary color, as well as for the black color . In the eighth column, the values obtained with the method of the present invention are shown, indicating the values obtained at 40% of the tone of the main prirnapo color, indicating also the values obtained for the other primary color, as well as for the black color. In the ninth column, the values obtained with the method of the present invention are shown, indicating the values obtained at 30% of the primary primary color tone, indicating also the values obtained for the other primary color, as well as for the black color . In the tenth column, the values obtained with the method of the present invention are shown, indicating the values obtained at 20% of the tone of the main prirnapo color, indicating in addition the values obtained for the other primary color, as well as for the black color. In the top column, the values obtained with the method of the present invention are shown, mdicating the values obtained at 10% of the color tone of the main color, indicating in addition the values obtained for the other primary color, as well as for the color black. With the tabulations thus obtained, we proceed to prepare the catalog or color chart in matrix form, which comprises ten rows and ten columns of rectangles, as shown in the catalog that is attached as an appendix and that accompanies the present detailed description. At the base of each rectangle, the values corresponding to each color tone calculated according to Table 1 are included, as well as the identification of the colors that intervened to form said color tone. The rows are identified from top to bottom with the letters fl, B, C, D, E, F, G, H, I and 3 respectively; the columns are identified from left to right with the numbers 100, 90, 80, 70, 60, 50, 40, 30, 20 and 10 respectively; and, the colors are arranged according to the following sequence: RED COLORS (FMARILLO, MAGENTA Y NEGRO) Reds Amarillentos (Pages 1 to 10). In the first column of pages 10 to 10, rectangles of 100 colors are shown at 100% yellow tone (10 per page and per column). From the second column to the tenth row of said pages 1 to 10, rectangles of 900 shades of color are shown? (90 per page, 10 per column). Each column corresponds to a different yellow tone, namely: 90% tone, 80% tone, 70% tone, 60% tone, 50% off - * ono, 40% tone, 30% tone , 20% tone and 10% tone, respectively. Reds Ilagentosos (Pages 11 to 20). In the first column of said pages 11 to 20, rectangles of 100 colors are shown at 100% color-magenta tone (10 colors per page and per column). From the second column to the tenth column of said pages 11 to 20, rectangles of 900 color tones are shown (90 color tones per page and 10 per column). Each column corresponds to a different magenta color tone, namely: 90% tone, 80% tone, 60% tone, 50% tone, 40% tone, 30% tone, 20% tone and 10 % tone respectively. GREEN COLORS (YELLOW, CILAN AND BLACK) Yellowish greens (Pages 21 to 30). In the first column of pages 21 to 30, rectangles of 100 colors are shown at 100% yellow tone (10 colors per page and per column). From the second column to the tenth column of said pages 21 to 30, rectangles of 900 color tones are shown (90 color tones per page and 10 per column). Each column corresponds to a different yellow tone, namely: 90% tone, 80% tone, 60% tone, 50% tone, 40% tone, 30% tone, 20% tone and 10 % tone respectively.

Cyanosos greens (Pages 31 to 40). In the first column of said pages 31 to 40, rectangles of 100 colors are shown at 100% color tone (10 colors per page and per column). From the second column to the tenth column of these pages 31 to 40, rectangles of 900 color tones are shown (90 color tones per page and 10 per column). Each column corresponds to a different color tone, namely: 90% tone, 80% tone, 60% tone, 50% tone, 40% tone, 30% tone, 20% tone and 10% tone respectively. VIOLET COLORS (MAGENTA, CÍAN AND NEGRO) Magentic Violets (Pages 41 to 50). In the first column on pages 41 to 50, rectangles of 100 colors are shown at 100% color-magenta tone (10 colors per page and per column). From the second column to the tenth column of said pages 41 to 50, rectangles of 900 color tones are shown (90 color tones per page and 10 per column). Each column corresponds to a different magenta color tone, to fit: 90% tone, 80% tone, 60% tone, 50% tone, 40% tone, 30% tone, 20% tone and 10 % tone respectively. Cyanosos Violets (Pages 51 to 60). In the first column of said pages 51 to 60, rectangles of 100 colors are shown at 100% cyan tone (10 colors per page and per column). "* 9 From the second column to the tenth column of said pages 51 to 60, rectangles of 900 color tones are shown (90 color tones per page and 10 per column). Each column corresponds to a different color tone, namely: 90% tone, 80% tone, 60% tone, 50% tone, 40% tone, 30% tone, 20% tone and 10 % tone respectively. In accordance with the foregoing description, it can be seen that with the catalog or color chart q? E obtained using the method of the present invention, a clear difference can be shown between what is COLOR and what is ICON, since for the first time it has been possible to obtain a color chart that follows an exact and mathematically defined pattern, for which a method basically comprising obtaining the required color tone by applying a volume of color is applied., calculated according to the mathemal expression (I), previously defined, which guarantees the following: a) .- If any user of any color printing by means of screens, comes with the designer or the printer with a sample of a "COLOR" any, that color will be contained and defined exactly on some page of the sample, which includes at least 6000 different colors. b) .- Said "color" is identified by a system of coordinates that personalize it and identify it fully; for example: Page 46, Row "G", Column "60". Under the. rectangle corresponding to these coordinates, are the values (M55 + C25 + N25), which means that inside the. normal printing process, the chosen "color" can be achieved by using a 55% screen with the Magenta color, a 25% screen with the Cyan color and a 25% screen with the color Black. c) .- If for some reason it is required to reproduce the aforementioned color in a "flat" manner, the conversion to quantities of corresponding pigments that will be mixed to give the required color, is carried out in a very simple way using the corresponding conversion factors, or, using a sliding rule of equivalent factors previously calculated, in such a way that for the example of subsection (b) the following is obtained: Magenta 121 Cyan Parties 25 Black Parts 25 Parties White T. 279 Parts (Complement) Because the specific weights between the primary colors are practically the same, the parts indicated in the previous mixture can be expressed in kilograms, grams, decigrams, liters, gallons, etc. d) .- When the colors are obtained mathematically, it is possible to obtain the intermediate colors between each color-shown in the sample, with which you get control over 6000 additional "colors". e) .- The sample that is obtained by applying the method of the present invention, allows to have control over 12000 colors (6000 colors of the original sample and 6000 additional intermediate colors), besides obtaining the printing of said colors by means of of "screens", or, by means of "mixtures", if it is in flat form. As can be seen, the present invention is distinguished by its simple, practical and economical application, as well as being very simple and easy to use, since for the first time it has been possible to obtain a color chart that follows a pattern Exact and mathematically defined, using a method that basically comprises obtaining the required color tone by applying a volume of color, calculated according to the mathematical expression (I). Although certain specific embodiments of the present invention have been illustrated and described, it should be emphasized that numerous modifications to them are possible. The present invention, therefore, should not be considered as restricted, except for what is required by the prior art and by the spirit of the appended claims.

Claims (4)

1. NOVELTY OF THE INVENTION CLAIMS l.- A method for obtaining a tabulation that allows to represent a range of reproduced colors with accuracy, characterized because it comprises: a). ~ Selecting a percentage of color tones in the color combination primary yellow, magenta and cyan, to define a 100% color formed by the combination of said primary colors; b) .- obtain the volumes equivalent to the percentages of the selected color tones, applying the equation: T2 V = (II) 10 where: T = Is the color tone in percentage (%); y, V = Is the volume of the color in volumetric units; c) .- Add the volumes of color obtained in the antepor step and obtain the percentage of each of them, setting a reference value of total volume, which will apply the percentages obtained; d) .- take as reference the smaller volume obtained in the previous step and take volumes equal to the reference of the other two primary colors; e) .- determine the equivalent gray color for the mixture of equal volumes of the three primary colors of the previous step; f) .- add equal volumes of the three primary colors obtained in step (d), and multiply the result by% Black color volume and% White color volume obtained in the previous step, to obtain the volume of corresponding equivalent gray, thereby reducing the mixture of the three primary colors of step (a), to two primary colors and to the equivalent gray corresponding to the mixture of Lgual volumes of the three primary colors obtained in step (d); g) - subtract the volume of white color from the equivalent gray, in such a way that the volumes of the mixture of the previous step are reduced to two primary colors and black color, obtaining the total volume of the mixture and obtaining the percentage of each color in it, defining in this way the present quantities of the two primary colors and the black color in the mixture, the volume values thus obtained correspond to the color at 100% of the selection of the color tones of the three colors Primary of paeo (a), not including white volume; h) .- apply equation (I): T = (10 V) i / 2y to the volume values found in step (g) to determine the% tone for the two primary colors and for the black col or; ?) .- Set a% color tone; j) .- obtain the volume corresponding to the color tone selected by applying equation (II), to or co or base a total reference volume, such that by complement the volume of white color present in the mixture is determined; 1 -) .- obtain the quantities of the two primary colors and the black color present in the mixture of the previous point, using the percentage values for each color obtained in step (g); L) .- Add the volume of white color and the volume of primary primary color obtained in the previous point, to the volume thus obtained, the reciprocal is calculated and multiplied by the reference volume, in such a way that an factor that will remain constant; n) .- multiply the volume of white color obtained in stage () and the volumes of the two primary colors and the black color obtained in stage (k), by the factor obtained in the previous step -, obtaining in this way the final volumes of black, white and the two primary colors; n) .- obtain the equivalent tones of the two volumes of primary colors and the volume of black color of the previous stage, applying equation (T); and, ñ). ~ tabulate the results.
2. 2. A method for obtaining a tabulation that allows to represent a range of colors that can be reproduced with exactitude, according to claim 1, characterized in that the reference volume is selected between 1, 10, 100 or 1000, preferably being used 1000.
3. 3.- A method for obtaining a tabulation that allows to represent a range of reproducible colors with accuracy, according to claim 1, further characterized in that in order to carry out the obtaining of the equivalent gray of the mixture of equal volumes of the three primary colors, in a first stage the volume of equivalent black color which retains 25% of light for the color, the equivalent black volume that retains 50% light for the magenta color, and the equivalent black-color volume that retains 75% light for the color, applying equation (II) V = T2 / 10, so that once the volumes of black color have been obtained for each primary color, each volume of black color is complemented with the volume of white color required to obtain 100% volume, the volumes of black color and of white color thus found, they correspond when mixing them to the equivalent gray colors for each primary color; and, in a second stage, the volumes of black color and volumes of white color, corresponding to each primary color, are grouped and summed so that the% Vol of black color and the corresponding% Volurnen of white color are obtained. to the equivalent gray color for the mixture of the three primary colors in equal volumes.
4. 4. A method for obtaining a tabulation that allows to represent a range of colors that can be reproduced accurately, according to claim 1, characterized in that the method is repeated by varying the values of step (a) times q? E it is necessary, until obtaining the values required to form a tabulation that will serve as a reference to obtain a catalog or color chart.