Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
2002-03-07
2004-05-25
Bella, Matthew C. (Department: 2676)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S593000, C345S597000, C345S591000, C345S604000
Reexamination Certificate
active
06741260
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a computer toning apparatus and a toning method of a paint having brilliant feeling using micro brilliant-feeling sample-color tags.
BACKGROUND ART
A color matching system using a computer is publicly known as described in the specification of U.S. Pat. No. 3,601,589. The above U.S. Patent discloses a method in which all spectral reflectances of an unknown color panel are decided by a scanning spectrophotometer and sent to a computer, and the computer mathematically processes previously stored data showing K-value (indicating “light absorption factor”) and S-value (indicating “light scattering factor”) to perform logical color matching.
The disclosed contents of the above U.S. Patent basically relate to a series of computing procedures. That is, according to the computing procedures, it is possible to compute K-value and S-value for each of spectral wavelengths and moreover decide K- and S-values of a combination of a pair of pigments so that the values become equal to K- and S-values of an unknown color for each of the above spectral wavelengths. This is a basic color-matching algorithm used for other spectral-light-intensity-based color matching systems.
The system according to the above U.S. Patent has the following two problems: the first problem is that the system is very expensive and the maintenance of the system is difficult and the second problem is that logical color matching is performed by using the data of an unknown color obtained for a known pigment. That is, a color finally obtained by mixing pigments in accordance with a color value obtained by computation may become a color different from the above unknown color. Therefore, because the above color-matching formula is a primary mathematical approximation method, it is normally necessary to correct and adjust the system.
To improve the system, the official gazette of Japanese Patent Laid-Open No. 153677/1989 discloses a method and an apparatus of analyzing a selected color by a portable color meter, storing the color data showing the hue, chroma, and lightness of the selected color, connecting the color data in the color meter to a computer, storing a plurality of usable color formulas (paint blending) in the computer, storing the data showing hues, chromas, and lightnesses of paints designated by the stored usable color formulas in the computer, finding the most approximate matching by comparing the data of the selected color received from the color meter with the stored color data showing the stored usable color formulas, selecting a stored color formula shown by the color data found as the most approximate matching, and thereby performing color matching for the selected color.
Moreover, as paint colors of automobiles, the number of paint colors having brilliant feeling is recently increased in which aluminum powder or brilliant mica is blended from the viewpoints of diversification of personal tastes and improvement of beauty. When performing color matching to repair-paint the paint colors having brilliant feeling, the color-matching accuracy of the color-matching method disclosed in the official gazette of Japanese Patent Laid-Open No. 153677/1988 is not sufficient yet and a color-matching method for paint colors having brilliant feeling by a computer has not been proposed so far. Moreover, there is a problem that toning of a paint color having brilliant feeling is difficult for an immature toning person.
Furthermore, because a marketed calorimeter cannot perform measurement separate from brilliant feeling, micro brilliant feeling e.g. graininess of aluminum) may not be frequently adjusted though a color is toned.
It is an object of the present invention to provide a computer toning method capable of accurately toning a paint color having brilliant feeling and allowing an immature toning person to easily perform toning.
BRIEF SUMMARY OF THE INVENTION
The present inventor found that the above object can be achieved by using a computer toning apparatus constituted by a calorimeter, micro brilliant-feeling sample-color tags, and a computer to which various paint blendings and paint-color data values are input and in which a color-matching computation logic works and finished the present invention.
That is, the present invention provides a toning method of a paint having brilliant feeling (hereafter may be referred to as a first toning method), characterized by executing the following steps (1) to (3) by a computer toning apparatus constituted by (A) a calorimeter, (B) micro brilliant-feeling sample-color tags, and (C) a computer in which a plurality of paint blendings, color data and micro brilliant-feeling data, and color characteristic data of a plurality of primary colors and micro brilliant-feeling characteristic data are entered and a color-matching computation logic using the paint blendings and the data values works. That is, the present invention comprises:
(1) a step of measuring a reference color to which a paint color should be adjusted through toning by a colorimeter and obtaining the data of the reference color;
(2) a step of comparing the reference color with micro brilliant-feeling sample-color tags and deciding the micro brilliant feeling of the reference color; and
(3) a step of comparing the color data and micro brilliant feeling of the reference color with the color data and micro brilliant-feeling data corresponding to paint blendings previously entered in a computer, indexing matching degrees between colors and micro brilliant feelings of the entered paint blendings, and selecting a prospective paint blending.
Moreover, the present invention provides the above toning method characterized by executing (4) a step of correcting the selected prospective paint blending by using a color-matching computation logic and obtaining a corrected blending closer to a reference color after the above step (3).
Furthermore, the present invention provides the above toning method characterized by transferring the prospective corrective paint blending obtained in the step (3) or the corrected blending obtained in the step (4) to an electronic balance.
Furthermore, the present invention provides a toning method of a paint having brilliant feeling (hereafter may be referred to as second toning method) characterized by executing the following steps (5) to (7) by a computer toning apparatus constituted by (A) a colorimeter, (B) micro brilliant-feeling sample-color tags, and (C) a computer in which a plurality of color numbers, paint blendings correspond to the color numbers, color data and micro brilliant-feeling data corresponding to the paint blendings, and color characteristic data and micro brilliant-feeling data of a plurality of primary-color paints are entered and a color-matching computation logic using the paint blendings and the data values works. That is, the present invention comprises:
(5) a step of measuring a reference color to which the color of a paint should be adjusted by a colorimeter through toning and obtaining the data of the reference color;
(6) a step of comparing the reference color with micro brilliant-feeling sample-color tags and deciding the micro brilliant feeling of the reference color; and
(7) a step of selecting the color data and micro brilliant-feeling data of at least one paint blending having the color number same as the preset color number of the reference color, comparing the color data and micro brilliant-feeling data of the selected paint blending with the color data and micro brilliant feeling of the reference color, indexing the matching degree between the color and the micro brilliant feeling of the selected paint blending, and selecting a prospective paint blending.
Furthermore, the present invention provides the above toning method characterized by executing (8) a step of correcting the selected prospective paint blending by a color-matching logic and obtaining a corrected blending closer to a reference color after the above step (7).
Furthermore, the present invention further provides the above toning method characte
Gamou Shinichi
Hirayama Tohru
Bella Matthew C.
Kansai Paint Co. Ltd.
Tran Tam
Wenderoth , Lind & Ponack, L.L.P.
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