JPH11173917A - Color chart - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a color chart which can display all colors when two selected colors are changed from 0% to 100%, on which the difference caused by fine color changes in real products or the like can be recognized o the color chart and the dot density rate of fine intervals numerically displayed by a computer or the like can be exactly recognized as a color. SOLUTION: Concerning the color chart 100 having color columns 10, in which one of four colors of yellow, magenta, cyan and black changes its dot density in the longitudinal axis direction of a plane and another color changes its dot density in the lateral axis direction, for displaying a color mixing two colors except for the said two colors with the fixed density, in order to recognize the dot % at the specified position of the said color column by successively and continuously increasing/decreasing and steplessly changing the dot density of the said two colors on the longitudinal and lateral axes, these X and Y axes are provided with dot % display parts 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color chart, and in particular, to a designated color of yellow, magenta,
The present invention relates to a color chart used to specify a mixed density of each of cyan and black colors.

[0002]

2. Description of the Related Art Offset color printing is performed using four printing plates using the four color inks of yellow, magenta, cyan, and black. Therefore, when a designer or the like specifies a color for a person in charge of plate making, each halftone dot percentage (the ratio of halftone dots occupying a certain area) of yellow, magenta, cyan, and black is specified. This is usually done by giving instructions. When a designer or the like recognizes an intended color or specifies a color to a third party, a color chart is often used.

[0003] In a conventional color chart 200, as shown in FIG. 4, each of two arbitrary colors that change the dot percentage is expressed by a constant percentage of the dot percentage. And, for example, 5 on the X axis and the Y axis.
It has a large number of color blocks 220 printed in increments of 10%. Then, from the color block 220, for example, yellow color 10%, magenta color 30%, cyan color 40%, and black color 50% are designated.

[0004]

However, in this color chart 200, the halftone dot% of each color in one color block 220 is constant, and the halftone dot change of each color is 5%.
Steps were discontinuous and gradual, represented in 10% steps. Therefore, the specified dot% on the X axis and the Y axis
In other words, colors in the middle of the specified% cannot be expressed, must rely on intuition, and cannot be directly recognized.

[0005] However, with today's improvements in printing technology and printing systems, rapid computerization, especially control of a series of printing processes from a design process to a printing process by a computer, allows printing color designation by a computer. It has come to be. Under such circumstances, today, it has become possible to cope with subtle color changes such as 1 to 2% or less.
Therefore, when specifying a color, it is necessary to specify a subtle color such as 1 to 2%. Conversely, when a computer recognizes colors, it is possible to identify subtle color differences, and it is very likely that subtle color differences will be displayed as halftone dot%. .
In such a case, it is possible to confirm to some extent by the color display, but there is still a limit in correctly recognizing the finished state of printing.

[0006] Further, with the improvement of the printing ability,
With the fact that the color designation of designers and consumers has been subdivided, and today that various colors are flooding, actual products,
It is becoming increasingly important to faithfully reproduce colors from those that have been colored, such as dyeing and painting, rather than coloring by halftone processing in printing such as illustrations.

In order to respond to such social demands, the conventional stepwise and discontinuous color chart 200 cannot sufficiently respond. Despite having such social demands and problems, the drawbacks and solutions of the conventional color chart have not been noticed.

Therefore, the present invention can display all colors when the selected two colors change from 0% to 100%, and also displays the difference due to subtle color changes due to actual products on a color chart. % Of finely-spaced dots that can be recognized by a numerical value displayed by a computer or the like
It is an object of the present invention to provide a color chart which can accurately recognize as a color.

[0009]

In order to solve the above-mentioned problems, the invention described in claim 1 of the present invention employs a method of “four colors of yellow, magenta, cyan, and black”. A color column 10 for displaying a color obtained by mixing two colors by changing halftone dot% of one of the arbitrary two colors in the X-axis direction of the plane and the other one of the two colors in the Y-axis direction. Alternatively, in the color chart 100 having a color section 10 for displaying a color obtained by mixing one or two of the remaining two colors at a constant density with the arbitrary two colors, a halftone dot in the X-axis and Y-axis directions of the two colors is provided. The dot percentage display section 20 is provided on the X axis and the Y axis in order to continuously increase and decrease the percentage sequentially and to change it steplessly, and to recognize the dot percentage at an arbitrary position in the color section. A color chart characterized by the following. " That is, the dot percentage of the color designated on the X-axis and the Y-axis is successively increased and decreased so as to be changed steplessly. And Y axis.

Further, the means adopted by the invention according to claim 2 is that "one of four colors of yellow, magenta, cyan and black is selected in the X-axis direction of the plane. The other one color is changed in halftone dot% in the Y-axis direction to display a color in which the two colors are mixed, or the remaining one color or two in addition to the arbitrary two colors In a color chart 100 having a color column 10 for displaying colors obtained by mixing colors at a constant density, the halftone dot% of the two colors is successively increased and decreased in the X-axis and Y-axis directions, and is changed steplessly. The color chart is characterized in that a plurality of identification marks 80 are provided in the color section corresponding to a specific density in order to recognize the dot percentage at a specific position in the color section. " It is. That is, the dot percentage of the color designated on the X-axis and the Y-axis is successively increased / decreased so as to be changed in a stepless manner. Is provided with an identification mark 80, and the halftone dot% can be specified by the identification mark 80.

Further, the means adopted by the invention according to claim 3 is that “one of two colors of yellow, magenta, cyan and black is selected in the X-axis direction of the plane. The other one color is changed in halftone dot% in the Y-axis direction to display a color in which the two colors are mixed, or the remaining one color or two in addition to the arbitrary two colors In a color chart 100 having a color column 10 for displaying colors obtained by mixing colors at a constant density, the halftone dot% of the two colors is successively increased and decreased in the X-axis and Y-axis directions, and is changed steplessly. In order to recognize the dot percentage at a specific position in the color section, a dot percentage display section 20 is provided on the X axis and the Y axis, and a plurality of identification marks 80 are provided in the color section corresponding to a specific density. The color chart is characterized by the provision of "." And than, in order to facilitate further identify the halftone% is obtained by providing the dot percentages unit 20 both identification label 80.

Further, the means adopted by the invention described in claim 4 is that the identification mark 80 comprises a plurality of substantially square enclosures. . "As its gist. Thereby, the color inside the enclosure is distinguished from the surroundings so as to be easily recognized.

The means adopted by the invention according to claim 5 is that "one of the three colors of yellow, magenta, cyan and black is selected in the X-axis direction of the plane and the other is selected. Is changed in the Y-axis direction, and the remaining one color is changed in the halftone dot% in the Z-axis direction, so that the X-axis and the Y-axis, the Y-axis and the Z-axis and the Z-axis are changed.
Three color columns for displaying colors in which two colors respectively corresponding to the axis and the X-axis direction are mixed, 11, 12, 13 or any one of the three colors is mixed with the remaining one color at a constant density. In a color chart 110 having three color sections 11, 12, and 13 for displaying colors, the halftone dot% is continuously increased and decreased in the X-axis, Y-axis, and Z-axis directions of the three colors in a continuous manner. At the same time, in order to recognize the halftone dot% at an arbitrary position in the color columns 11, 12, and 13, the X axis,
A color chart in which halftone dot display units 21a, 21b, and 21c are provided on a Y axis and a Z axis. The halftone dot% of the color designated on the X-axis, the Y-axis and the Z-axis is successively increased / decreased so as to be changed steplessly, and the mixed density thereof can be specified. Thus, the dot percentage is displayed on the X axis, the Y axis and the Z axis.

The means adopted by the invention according to claim 6 is that "one of three colors of yellow, magenta, cyan and black is selected in the X-axis direction of the plane,
The other one color is changed in the Y-axis direction and the remaining one color is changed in the half-tone dot% in the Z-axis direction to correspond to the X-axis and the Y-axis, the Y-axis and the Z-axis, and the Z-axis and the X-axis, respectively. Three color columns for displaying a color in which two colors are mixed, 11, 12, 13 or three color columns for displaying a color obtained by mixing the remaining three colors with a constant density in addition to the arbitrary three colors; In a color chart 110 having 12 and 13, the X axis, Y axis and Z
The halftone dot% is successively increased and decreased in the axial direction, and is changed steplessly. In addition, in order to recognize the halftone dot% at a specific position in the color columns 11, 12, and 13, the color corresponding to a specific density is used. In columns 11, 12, and 13, a plurality of identification marks 80
Color chart characterized by having provided. ”As its gist. That is, by continuously increasing and decreasing the dot percentage of the color designated on the X-axis, the Y-axis, and the Z-axis, it is configured to change steplessly, so that the mixture density can be specified accurately. An identification mark 80 is provided in each of the color columns 11, 12, and 13, and the dot percentage can be specified by the identification mark 80.

Further, the means adopted by the invention according to claim 7 is that "one of four colors of yellow, magenta, cyan and black is selected in the X-axis direction of the plane,
The other one color is changed in the Y-axis direction and the remaining one color is changed in the half-tone dot% in the Z-axis direction to correspond to the X-axis and the Y-axis, the Y-axis and the Z-axis, and the Z-axis and the X-axis, respectively. Three color columns for displaying a color in which two colors are mixed, 11, 12, 13 or three color columns for displaying a color obtained by mixing the remaining three colors with a constant density in addition to the arbitrary three colors; In a color chart 110 having 12 and 13, the X axis, Y axis and Z
The X-axis, the Y-axis and the Z-axis are used in order to continuously increase and decrease the dot percentage of the axis successively and to change the dot percentage in a stepless manner, and to recognize the dot percentage at a specific position in the color sections 11, 12, and 13. A color chart in which halftone dot display portions 21a, 21b, 21c are provided on axes, and a plurality of identification marks 80 are provided in the color columns 11, 12, 13 corresponding to specific densities. In order to further easily specify the dot%, both the display unit 21 for the dot% and the identification mark 80 are provided.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a color chart 100 according to a first embodiment of the present invention.

An area of a color section 10 is provided in the center of the color chart paper so as to form a square, and any two colors for changing the color density among four colors of yellow, magenta, cyan and black are provided. A color for increasing and decreasing the dot percentage along the X-axis direction (hereinafter, referred to as “X-axis increasing / decreasing color”) and a color for increasing / decreasing the dot percentage along the Y-axis direction (hereinafter, “Y-axis increasing / decreasing color”) .). The halftone dot% is successively increased from the right end to the left end so that the rightmost end of the X axis is 0% halftone dot% and the left end is 100% halftone dot%. The X-axis increase / decrease color is changed. Similarly, the halftone dot percentage increases continuously from the upper end to the lower end so that the upper end of the Y axis becomes 0% halftone dot and the lower end becomes 100% halftone dot. Thus, the Y-axis increase / decrease color is changed. Therefore, in the color column 10, there is only one point showing the same color, and if any two different points are selected, at least one of the two colors selected as the increase / decrease color has a different halftone dot%. It becomes.

Further, by having a configuration in which one or two colors other than the two colors selected as the density change on the X axis and the Y axis are mixed at a fixed ratio, yellow, magenta, cyan, and black are obtained. Dot percentages for all four colors
Can be displayed. Therefore, colors other than metallic colors such as gold and silver and fluorescent colors can all be represented by the color chart 100. This makes it possible to objectively recognize the color accurately even when a color in which all four colors of yellow, magenta, cyan, and black are mixed is specified by the dot%, and conversely, Even when a color is specified from a product or the like, it can be more accurately recognized as one dot%.

At this time, it is not always necessary that the change rate of the halftone dot% of the X-axis increase / decrease color and the Y-axis increase / decrease color is the same. For example, when it is desired to observe only the X-axis color change in detail, It is possible to freely increase the width only and lower the change rate of the X-axis increase / decrease color. In addition, the direction of the increase / decrease may be reversed in the left, right, up and down directions.

Although it is possible to represent all colors as described above, if it is desired to produce several tens of color charts, a color chart in which all proportions of four colors are mixed is used. Since it is difficult to produce a color, it is difficult for human eyes to recognize the change in density. Can be dealt with.

Then, in the designated color display sections 40 and 50, the colors obtained by changing the dot percentages of the X axis and the Y axis can be seen at a glance.
In addition to displaying the selected two colors,
The halftone dot percentage of the color or two colors is displayed together with the halftone dot percentage on the designated color display sections 60 and 70.

Then, the halftone dot percentage display section 20a on the X axis and the Y
Numbers from 0 to 100 are displayed on the axis halftone dot display section 20b so as to correspond to the halftone dot percentages of the respective axes. This number represents the halftone dot% of the color change, and the step size may be any%, and can be selected according to the use. In the present embodiment, the information is entered in units of 10%. Then, the color column 10 corresponding to this number
Represents the dot%.

By the way, the color chart 100 constructed as described above has the density change of 0 to 100% of the density change of two colors arbitrarily selected from the above four colors of yellow, magenta, cyan and black. A mixed color state can be displayed. Therefore, in the conventional color chart 200, when a color such as 13% increase / decrease color in the X axis and 22% increase / decrease color in the Y axis is specified by a computer or the like for the colors between the color blocks 220, for example. Since the colors are between the color blocks 220, it is necessary to rely on the sensitivity of a skilled person. However, it is necessary to associate the specified dot% with the dot% display section 20 described on the X axis and the Y axis. Thus, the intended color can be accurately recognized, and can be objectively transmitted to a third party, for example, a worker. Conversely, even when recognizing colors reproduced on products, etc., all color changes occur in a stepless manner, so even subtle changes can be accurately identified. The dot% can be specified by the corresponding dot% display section 20 of the corresponding X-axis and Y-axis.

Next, the second embodiment of the present invention will be described with reference to FIG. 2. In order to directly specify the dot percentage from the color column 10 representing a continuous color change, the identification mark 80 is used.
Is provided. This identification mark 80 is a certain dot%
By providing an enclosing area (for example, X-axis increasing / decreasing color 10% increments, Y-axis increasing / decreasing color 10% increments), a halftone dot% at a specific position is picked up and specified. Point% is also easily recognized. Another example of the identification mark 80 is shown in FIGS. FIG.
5. The method according to claim 4, wherein the identification mark 80 is located at a certain concentration on the X-axis and the Y-axis (for example, every 5% or 10%).
% Increment) with a square enclosure. Note that this enclosure is outlined, and the length of one side of the enclosure corresponds to about 3% in this embodiment. Therefore, since the center of the box indicates a certain density, the halftone dot% can be easily specified even when a certain point on the front, rear, left and right of the box is specified. FIG. 3 is a diagram in which X marks are provided on four sides of a part having a certain density. In this way, the center of the four-sided X mark indicates a certain density, and the part with the certain density also on the X mark makes it easier to specify the halftone dot% at the specific position. FIG. 4 is a diagram in which straight lines are provided in parallel with the X axis and the Y axis at a certain concentration.
This straight line represents a constant density. In FIG. 5, the straight line near the intersection of the straight lines is deleted. In addition, the shape, size,
The color, quantity, interval, and the like are not limited to the present embodiment, and can be arbitrarily selected from the visibility, the ease of recognition, and the like.

According to the third aspect of the present invention, by adopting both the dot percentage display section 20 and the identification mark 80, the dot percentage is further specified from each viewpoint or by using both of them. It was made easier.

The invention described in claim 4 has been described above, and will not be described.

The invention described in the fifth, sixth, and seventh aspects will be described with reference to FIG. 6 showing the invention according to the seventh aspect. The X-axis, the Y-axis, and the Z-axis from the center point of the color chart paper 110 And three color sections 11, 12, and 13 having a parallelogram shape including the X axis and the Y axis, the Y axis and the Z axis, and the Z axis and the X axis. Then, of the four colors of yellow, magenta, cyan, and black, any three colors that change the dot percentage are selected, and designated as X-axis increase / decrease colors, Y-axis increase / decrease colors, and Z-axis increase / decrease colors, respectively. . And
The center point is set to 0%, and the X-axis, Y-axis, and Z-axis increase / decrease colors are respectively increased so that the halftone dot percentage continuously increases in the X-axis, Y-axis, and Z-axis directions from 0% to 100%. It changes continuously and steplessly. Accordingly, when all combinations of two of the selected three colors, for example, yellow, magenta, and cyan are selected as shown in FIG. 6, the combination of yellow, magenta, and magenta is selected. The color mixture state of cyan and all combinations of cyan and yellow can be represented by one plane. Further, by mixing the remaining one color in the color columns 11, 12, and 13 at a fixed halftone dot percentage (black color is 20% in FIG. 6), a mixed color state of all four colors can be expressed. It is. In order to easily recognize which color is mixed, a designated color display 41 is provided for each axis, and two colors that increase and decrease are displayed in each color column. It is desirable that the color 14 is also displayed.

Then, X of the color chart 110
Dot percentage display portion 21 on or near the axis, Y axis and Z axis
The invention according to claim 5, wherein a, 21b, and 21c are provided and numbers from 0 to 100 are displayed so as to correspond to the respective axes, and the identification marks 80 are provided in the color columns 11, 12, and 13. The invention according to claim 6 is the invention according to claim 7, in which both the dot percentage display section 21 and the identification mark 80 are provided.

The color chart 11 configured as described above
0 has all the effects of the color chart 110 described in claims 1 to 4, that is, makes sure that the halftone dot% of the intended color is accurately recognized for a specified color, Although it is obvious that it is possible to make a distinction, it is also possible to express all combinations of two colors selected from arbitrary three colors on one sheet of paper, so that three types of mixed color states can be expressed on one sheet of paper (claim) Not only can three color charts 100 described in items 1 to 4 be represented by one sheet), but also in the case of actually producing the color chart 110, a large number of mixed colors can be represented with a small number of pages. In addition, the number of paper sheets can be reduced as a whole, and the production cost of the color chart 110 can be reduced, and a compact color chart 110 that is convenient to carry can be provided. Further, color recognition and discrimination can be facilitated because the number of papers is small.

[0030]

As described above, the color charts according to the first to fourth aspects of the present invention can change the halftone dot percentage in a stepless manner, compared with the conventional color chart which can only express colors mixed at a certain fixed ratio. All halftone dot percentages from 0 to 100%
Can be displayed, and the dot% can be easily specified. Therefore, a color that has been particularly required in recent years can be recognized as an objective color in correspondence with a computer that displays or recognizes the value in halftone dot%. Can be recognized and communicated. In addition, by displaying a color in which all four colors of yellow, magenta, cyan, and black are mixed, colors that are not halftone-processed, such as actual products, can be accurately selected, The present invention has an excellent effect that it is possible to recognize the color and to accurately and objectively recognize the color even when a delicate ratio of the four colors is displayed by a computer or the like. Furthermore, since the color charts according to claims 5 to 7 can express a mixed color state of two colors composed of all combinations of three colors arbitrarily selected on one sheet, the number of color chart paper combinations themselves is reduced. This makes it easier to recognize the designated color, and has an excellent effect of reducing the cost of producing a color chart.

[0031]

[Brief description of the drawings]

FIG. 1 is a front view showing a color chart according to a first embodiment of the present invention.

FIG. 2 is a front view showing a color chart according to a second embodiment of the present invention.

FIG. 3 is a front view showing a color chart according to a third embodiment of the present invention.

FIG. 4 is a front view showing a color chart according to a fourth embodiment of the present invention.

FIG. 5 is a front view showing a color chart according to a fifth embodiment of the present invention.

FIG. 6 is a front view showing a color chart according to a sixth embodiment of the present invention.

FIG. 7 is a front view showing a conventional color chart.

[Explanation of symbols]

100, 110 Color chart 10, 11, 12, 13 Color column 20, 21 Halftone dot display part 20a, 21a Halftone dot percentage display part of X axis 20b 21b Halftone dot% display part of Y axis 21c Halftone dot percentage of Z axis Display unit 40, 50, 60, 70 Designated color display unit 80 Identification mark 200 Conventional color chart

Claims (7)

[Claims] 1. One of two arbitrary colors of yellow, magenta, cyan, and black, one of which is a halftone dot percentage in the X-axis direction of the plane, and the other one is a halftone dot percentage in the Y-axis direction. And a color section for displaying a color in which the two colors are mixed, or a color section for displaying a color obtained by mixing the remaining one or two colors at a certain density with the arbitrary two colors. In the color chart, the halftone dot% of the two colors is sequentially increased and decreased in the X-axis and Y-axis directions, and is changed steplessly. A color chart, wherein a halftone dot display section is provided on the X axis and the Y axis. 2. A halftone dot percentage of one of two arbitrary colors of yellow, magenta, cyan and black in the X-axis direction of the plane and the other half in the Y-axis direction of the other color. And a color section for displaying a color in which the two colors are mixed, or a color section for displaying a color obtained by mixing the remaining one or two colors at a certain density with the arbitrary two colors. In the color chart, the halftone dot% in the X-axis and Y-axis directions of the two colors is sequentially increased and decreased to change steplessly, and to recognize the halftone dot% at a specific position in the color column, A color chart, wherein a plurality of identification marks are provided in the color section corresponding to a specific density. 3. The halftone dot percentage of one of two arbitrary colors of yellow, magenta, cyan, and black in the X-axis direction of the plane and the other color in the Y-axis direction of the other one. And a color section for displaying a color in which the two colors are mixed, or a color section for displaying a color obtained by mixing the remaining one or two colors at a certain density with the arbitrary two colors. In the color chart, the halftone dot% in the X-axis and Y-axis directions of the two colors is sequentially increased and decreased to change steplessly, and to recognize the halftone dot% at a specific position in the color column, A color chart, wherein a halftone dot% display section is provided on the X axis and the Y axis, and a plurality of identification marks are provided in the color section corresponding to a specific density. 4. The color chart according to claim 2, wherein said identification mark comprises a plurality of substantially square enclosures. 5. One of three colors of yellow, magenta, cyan, and black, one color in the X-axis direction of the plane, the other color in the Y-axis direction, and the other one color By changing each halftone dot% in the Z-axis direction to display a color obtained by mixing two colors corresponding to the X-axis and the Y-axis, the Y-axis and the Z-axis, and the two colors corresponding to the Z-axis and the X-axis, respectively. Or a color chart having three color sections for displaying a color obtained by mixing the remaining three colors at a constant density with the arbitrary three colors, wherein the three colors are screened in the X-axis, Y-axis, and Z-axis directions. In order to continuously increase and decrease the dot% and change it steplessly, and to recognize the dot% at an arbitrary position in the color section, a dot% display section is provided on the X axis, Y axis and Z axis. A color chart characterized by being provided. 6. One of three colors of yellow, magenta, cyan, and black, one color in the X-axis direction of the plane, the other color in the Y-axis direction, and the remaining one color By changing each halftone dot% in the Z-axis direction to display a color obtained by mixing two colors corresponding to the X-axis and the Y-axis, the Y-axis and the Z-axis, and the two colors corresponding to the Z-axis and the X-axis, respectively. Or a color chart having three color sections for displaying a color obtained by mixing the remaining three colors at a constant density with the arbitrary three colors, wherein the three colors are screened in the X-axis, Y-axis, and Z-axis directions. A plurality of identification marks are provided in the color column corresponding to a specific density in order to continuously increase and decrease the dot% and change it steplessly and to recognize the dot% at a specific position in the color column. A color chart, characterized in that: 7. One of three colors of yellow, magenta, cyan, and black, one color in the X-axis direction of the plane, the other color in the Y-axis direction, and the remaining one color By changing each halftone dot% in the Z-axis direction to display a color obtained by mixing two colors corresponding to the X-axis and the Y-axis, the Y-axis and the Z-axis, and the two colors corresponding to the Z-axis and the X-axis, respectively. Or a color chart having three color sections for displaying a color obtained by mixing the remaining three colors at a constant density with the arbitrary three colors, wherein the three colors are screened in the X-axis, Y-axis, and Z-axis directions. In order to continuously increase and decrease the dot% and change it steplessly, in order to recognize the dot% at a specific position in the color section, a dot% display section is provided on the X axis, Y axis and Z axis. A plurality of identification marks provided in the color column corresponding to a specific density. G.