JPS6063429A - Correction of color matching recipe in blending of color material - Google Patents

Abstract

PURPOSE:To enable not only the effective expansion of the usefulness of a CCM method but also the effective utilization of the existing foundamental data by offsetting substantially the difference between the conditions for making fundamental data and the conditions in the stage of reproducing color materials by the calculated recipe based on said conditions in simple calculation procedure. CONSTITUTION:The 1st recipe for blending color materials (A1-C1) is determined by CCM calculation for the tristimuls values (X1-Z1) of the intended color and the tristimuls values (X2-Z2) of the colored material obtd. by executing trial coloring by using said recipe are measured. Two ways of methods are adoped in order to offset the difference between X1-Z1 and X2-Z2 for the same A1-C1. The correction by the density of the coloring materials by one of said methods is accomplished by executing again the CCM calculation by X2- Z2, determining the 2nd recipe for blending the color materials (A2-C2) and preparing the 3rd recipe for blending the color materials by calculation from A1-C1 and A2-C2. The result of coloring executed by A3-C3 is corrected by using coeffts. The other method is the correction method by tristimuls values.

Description

[Detailed Description of the Invention] The present invention relates to a correction method for obtaining a highly accurate color matching prescription in color matching using a careful blend of coloring materials in various industries and crafts; These are four innovative products that can be widely used in various fields.

For dyeing and painting industries that apply coloring materials and for the production of crafts that require coloring, it is necessary to decide on a prescription that specifies the blending ratio and concentration of coloring materials to express the target color. Until now, the ability to meet the four extremely important technical requirements has relied primarily on the skill of experienced technicians.

Recently, with the spread of COM, which applies color mixing theory in color theory and speeds up calculations by computers, the dependence on skilled workers will decrease.cch
Although it can be argued that the accuracy of color matching prescriptions using t has reached a level of 4 on average, when it comes to tI and close color matching, *COM
Research on correction methods to improve the color matching accuracy of calculation prescriptions and make them practically effective is an important issue.

There are many reasons why CCM's calculation formula does not necessarily have sufficient matching accuracy, but the color matching accuracy is evaluated using so-called color difference values. In addition, since the basic data of a huge number of personnel used for color matching calculations is created in the laboratory, we can guarantee the reproducibility of the actual production and conditions at the moment. There are two points with C.

In the present invention, in order to solve the above-mentioned difficulties in OOM, for the evaluation of one color matching accuracy, the luminous color difference index NOt is used instead of the color difference value, and a strict quasi-evaluation that matches the visual acuity is used. Do it.

In addition, regarding poor reproducibility of basic data used in calculations, a simple n correction calculation is prepared by performing trial coloring only 7t4 times, and l! We have developed a more accurate method for correcting color matching prescriptions by adding correction based on nine color density levels.

In particular, the difference between the conditions for creating basic data prepared for calculations using the coloring results obtained by carrying out only one trial J*1!3 and the conditions for putting this into practice. The discovery that the problem regarding the difference between the laboratory and the production site can be solved by substantially canceling out the difference in the corrected calculation method is based on basic data that is created with appropriate accuracy. If possible, I would like to be able to use the IVS@ of myself, even if it was created by a hero, and use it effectively, so I would like to use it to create a huge amount of basic data according to my own conditions. I'm glad that it can completely save you time and effort.

The gist of the present invention is as follows q).

The first time (jL
f 11″″ [lKmMeasure 1ll (XYZ) of the colored object obtained by carrying out the sensuality = stimulus. Mu.

2-2&2 B, CFi is a coloring material used for color matching formulation.

Same eA1. For 1.01tc - [, X YB 1・
1. What causes the difference between Zi and x2- 2- z2?

Conditions for creating basic data for 00M calculation.

1- 1- The conditions for reproduction by CI are II & M
Since the cause can be found in the fact that B.

Correction method using color material concentration (CCC= CoJorant 0oneentratiOn (3
oraction) XY 2- 2- z2 So calculate 00M again 9! alms,
Second coloring material formulation (A])2&2-C2)Me-AI-1-CI and Mu2-'2.

From C2, the third coloring material formulation 8-8-CB is prepared by the following calculation.

Mu a = fn A ln mu 2 B 8 = m B, -n B 2 08=　m　O, -n　Cj　2 However, Lm In, nd is a positive number.

The coloring results carried out by Mu B 8-8-08 are as follows:
If a good color matching accuracy is achieved, but the color density level is low, the color density calculated from xllY t and Zl is I\C1゛8°.

2- Color density value c 2 Y calculated from 2-22 Using this, g and several m are corrected as follows.

l-body・*・.

m - mX (Ct / C2 Correction method using tristimulus values (TVC = Tristimulus Values 0orreati
on ) @ Three stimuli of color marking @ x y 1m 1. Z1! -, tIS/ Colored product
From Y 2 " 2.22, obtain the modified tristimulus QX Y Z by the first-order calculation.

8-8-3 This is used for the second COMWf'f1. 1. Add color material formulation formular 2-2-02.

X, = m X l-n X 2 Y = mY nY 8 l -2 Z-mZ-nZ2 -1 However, Ill and n are positive numbers.

2-2-02 carried out by 9 coloring B. The fruit reaches strength and good color matching viscosity, if necessary, x5. Color density WIC1” calculated from Y, %z1
The coefficient m is corrected as follows using the color density lIC2 calculated from 't, X2, '2, and z2.

Table 1 for each example tCCC in the case of m' = m show.

The present invention claims that it is effective to perform one color matching accuracy using the visual color difference index NC.

Color matching accuracy within the same lot of colored products ii.

Na≧ge・θ It's hard to force if you use it, but if it's 0 or R11, it's H.

Since it is known that Nc ≧3.0 is sufficient, it is considered that the color material color matching prescription correction method according to the present invention has sufficient practicality as seen in the examples.

[The entire range of L colors! The improvement trend in color matching speed when the method of the present invention is implemented is shown in FIG.

This can be seen in the example of staining, or the first (3 (3
In the M calculation prescription, any value exceeding 3.0 is due to the exit of the present invention.

Na [Niburu rating is L (I'm sure it can be improved.)

In the examples shown in the 11th meeting and the 7th edition, there are several formulation examples in which a total of n-t of COM are effectively converged, so excluding them, tf, color matching according to the X invention Accuracy exceeding No. 3.0 is approximately 60% for the CCC method and approximately 7% for the TVC method.
It is thought that it will reach about 1%.

In addition, Figure 2 shows the effect of improving color matching accuracy by the present invention.
Regarding the case of unmodified 00M method and TVC method t Ne
1. By applying the present invention, 1.
The color difference value is 1, the mail is increasing, but 2 the color difference value is 1, which is the convergence target of the normal 00M calculation, 4 or less
Regarding t'11 Ha@, it is widely distributed,
It is clear that the evaluation of precision four-color matching accuracy g/I4#It- is valid and strong.

As described above, the present invention was achieved by modifying the calculation formula for 30M in an extremely simple manner.

I think there's a way to get a highly accurate coloring material formulation.

The difference between the conditions for creating basic data and the conditions for reproducing color materials with p using the IF-base calculation prescription is substantially offset by τ in the simple 4 calculation procedure, expanding the usefulness of the 00M method. However, since the basic data can also be effectively utilized, it is economically useful as well.

(Margin below)

[Brief explanation of drawings]

Fig. 1 is an explanatory chart showing the trend of several times the color matching viscosity when the method of the present invention is applied. FIG. 2 is an explanatory chart showing the relationship between NC negative and Adams-Nitzkerson color difference pile for the case of the method. Patent applicant Naigai Tokushu Senko Co., Ltd. Representative Patent Attorney Shimizu Kuwa Shige (. (・1,71 2 (2) 口△E (AN) Procedural amendment is a formula) % formula % 2. Name of the invention Color material Relationship with the case of the person who corrects the method of amending the color matching prescription in compounding Patent Applicant address (residence) Shimizu Patent Office 6. Subject of amendment Drawings. Column 7 for a brief explanation of the drawings in the specification, Contents of amendment Purification τ5・ritenai h′! Zr4z,
Lt. (1) Correct the drawing as shown in the attached sheet. (2) Based on the amendments to the drawings, the following is the following in the shelf rC or explanation of the drawings in the clear fit document 4. In the third line, next to "Explanatory Chart J", "I is for 00M uncensored, mouth is for CCC correction, ha (d
What about TV corrections? "I will show you," he added. Next to "Figures and Tables" on the 7th line, add "1 A: Indicates staining with OCM uncorrected prescription; 1 #: Indicates staining with LTVC corrected prescription." 8 Attached documents amended drawings

Claims (1)

[Claims] 1. Ordinary computer color matching (hereinafter referred to as “(
! It is abbreviated as OMJ. ) A one-time trial was conducted according to the coloring material formulation prescribed by the authors. Using the five stimulus values of the colored material or the coloring material combination prescription obtained as a result, a color matching prescription that is several times more accurate can be determined, and if necessary, it can be adjusted according to the concentration level of one color, making it practical. Is it possible to obtain a color matching prescription with sufficient precision? A method for correcting color matching prescriptions in color material formulations. 2 #i1C in evaluation of color matching accuracy of color material formulation
The coloring material according to claim 1, which has been commonly used until now, uses the so-called color difference value (or luminous color difference [Nc) to test the color matching accuracy more precisely in accordance with visual perception. A method for correcting a color matching prescription in a formulation. 8. The coloring material formulation according to claim 1, which is characterized by higher accuracy by adjusting the color matching prescription that has completed color matching for hue by color density m c body'. 2. How to correct the color matching prescription.