JP2002287640A - Specific color sample chart for gravure printing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a specific color sample chart for gravure printing which facilitates selecting of the kinds of inks for rapidly and surely obtaining specific colors and mixing thereof and does not give rise to the dissidence points relating to the color differences, etc., from a printing customer. SOLUTION: This color sample chart 1 for gravure printing is formed by superposing the process ink yellow Y, magenta M and cyan C on one surface of a body 7 to be printed and the specific color ink purple B, green G and red R complementing the color gamuts of these inks respectively in desired combinations on each other. The chart described above consists of batches 3 arrayed in order to 10% units of halftone area rate of 10% and is formed as the specific of color sample chart for two color gravure printing formed by superposing the chart of monochromatic colors consisting of the inks adjacent in a Lab color specification system to these inks on the chart of the monochromatic colors of the inks disposed with the column of the batches 3 of the number of columns equivalent thereto in order of 10% units in the direction orthogonal therewith. The body 7 to be printed is formed approximately the same as a real object.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color sample chart for printing, which is used as a guide for selecting ink types and mixing ratios for reproducing colors other than process colors in a single color or a mixture. The present invention relates to a special color sample chart for gravure printing used in the field.

[0002]

2. Description of the Related Art Conventionally, a printing color sample chart for judging the proportion of ink mixture, particularly a gravure printing color sample chart of a special color in the packaging field, for example, a process color ink for offset (yellow, red, indigo) on a paper base material. And a color sample chart created by overprinting with black ink.

[0003] The above-mentioned special color means a color obtained by printing a color other than a single color of process color ink (yellow, red, indigo) with a single ink (may be mixed but not overprinted). It is used for a single color such as a logo mark, and provides a stable color of a printed color and a clear color which cannot be obtained by mixing process color inks.
The stability of this color means, for example, when obtaining red characters, etc.
The process ink may be obtained by superimposing red and yellow, but if the two colors are misaligned even slightly, the color will appear discolored, or the red and yellow inks will be used to express logo marks etc. in red. If you try to obtain by overprinting by
This means that the color balance is not lost due to a slight change in density or the like during printing. Further, the clear color referred to above means, for example, a case where a purple color between the process ink indigo (C) and the process ink red (M) is to be obtained as shown in the Lab coordinate system (L is omitted) in FIG. When the indigo (C) and red (M) are mixed, the position of the point (A) on the line connecting them (C) and (M) becomes cloudy purple, and the original clear purple (B) shown in FIG. ), It means that a clear purple color (B) can be obtained by using a special color ink consisting of a single purple pigment instead of mixing indigo (C) and red (M) inks. .

A conventional paper base material for obtaining the above-mentioned special colors is applied to an offset process color ink (yellow, red, indigo).
In the color sample chart based on the overprinting of black ink and black ink, the difference in the texture and the like from the film back printing in the package field, and the difference between the offset ink and the gravure ink,
It takes a lot of time to determine the proportion of ink mixture to obtain the desired spot color, or because there is no clear spot color that cannot be expressed only with process color inks (yellow, red, indigo), There is a problem in that a mismatch point regarding a color difference or the like with a print requester occurs due to an incorrect determination of the type selection.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and the object thereof is to consider the back printing of a film by gravure printing.
A print client who can determine the types of inks and their mixing ratios to obtain a special color in a short time and add clear special color inks that cannot be expressed only with process color inks (yellow, red, indigo) It is an object of the present invention to provide a gravure printing special color sample chart which does not generate a mismatch point regarding a color difference or the like.

[0006]

Means for Solving the Problems In order to achieve the above-mentioned object in the present invention, first, in one aspect of the present invention, process ink yellow, red, indigo and the color gamut of these inks are applied to one surface of a printing medium. Supplementary color ink purple, grass, red is a gravure printing color sample chart superimposed in a desired combination and printed in a gravure method, in a horizontal or vertical line,
The patches are arranged in order from 10% to 0% to 100% in halftone dot ratio, and the rows of these patches are arranged vertically or horizontally in the number of rows corresponding to 10% increments in the halftone dot ratio from 0% to 100%. A single color chart consisting of the special color ink red or grass adjacent to the process ink yellow in the ab coordinate system of the Lab color system in the single color chart made of the process ink yellow and having an arrangement opposite to that of the process ink yellow. Are superimposed, similarly to the case of the process ink yellow, a single color chart of the special color ink purple or red is superimposed on the single color chart of the process ink red, and a single color chart of the process ink indigo It is a color sample chart for gravure printing, wherein a single color chart made of a special color ink or purple is superimposed.

According to the first aspect of the present invention, the process color ink yellow, red, and indigo and the process color ink yellow,
A special color ink (purple) that complements the color gamut that can not be obtained only with red and indigo. It is possible to select and mix ink types to obtain a special color in a short time, and to add a clear special color ink that cannot be expressed only with process color inks (yellow, red, indigo). A special color sample chart for gravure printing that does not generate a mismatch point regarding a color difference or the like can be provided.

In the invention of claim 2, a desired halftone dot area ratio is provided on the entire surface of the two-color chart on which the process color inks are superimposed or on the entire surface of the two-color chart on which the process color inks are superimposed. 2. A color sample chart for gravure printing according to claim 1, wherein charts made of black ink are superimposed.

According to the second aspect of the present invention, the two-color chart or the two-color chart in which the process color inks yellow, red, and indigo are superimposed on the entire surface of the two-color chart have a relatively small halftone dot area ratio. By overlaying charts made of ink, a special color sample chart for gravure printing that can be applied to a special color grayed with black ink can be obtained.

According to a third aspect of the present invention, there is provided the color sample chart for gravure printing according to the first or second aspect, wherein the printing medium is a transparent film.

According to the third aspect of the present invention, the printed gravure printing special color sample chart is substantially the same as the real one by using a transparent film used for a soft packaging material in the field of packaging. Because it is the same, it is easy to select and mix the types of inks to obtain spot colors reliably in a shorter time, and there is no special point for gravure printing with no inconsistency regarding color differences etc. with the print client It is to be.

According to a fourth aspect of the present invention, there is provided a color sample chart for gravure printing according to the third aspect, wherein a coating film made of white ink is formed on the entire surface of the printed chart. It is.

[0013] In the invention of claim 5, an aluminum foil or an aluminum deposit is laminated on the entire surface of the printed chart or on the entire surface of the coating film made of the white ink. It is a color sample chart for gravure printing according to item 3 or 4.

According to the fourth or fifth aspect of the present invention, in the case of a soft packaging material, a white coating is further applied by film back printing, an aluminum foil having a metallic luster is provided on the film back printing, or a white coating is applied. Even when an aluminum foil that provides barrier properties is provided on the film, the texture, color, etc. are almost the same as the actual product, so the selection of ink types and the mixing of them to ensure a special color in a shorter time are ensured. And a gravure printing special color sample chart having no inconsistency regarding a color difference from the print requester can be obtained.

Further, according to the invention of claim 6, the printed sample is a color sample chart for gravure printing according to claim 1 or 2, wherein the printing medium is a paper base material.

According to the sixth aspect of the present invention, by using a printing medium as a paper base material, it is not limited to a paper container in the field of packaging, and is not limited to the case where a special color is obtained by gravure printing on paper. As the actual product is the same as the actual product, it is easy to select and mix ink types to obtain a special color reliably in a short time, and there is no inconsistency point regarding gravure printing with the color difference from the print client etc. It is to make a chart.

The above-mentioned Lab color system is a method for displaying color objects defined by the CIE (International Commission on Illumination).
Expressed in three dimensions (Lab coordinates), where L is brightness and a
b represents a color gamut.

[0018]

Embodiments of the present invention will be described below. The gravure printing special color sample chart of the present invention is, for example, as shown in FIG. 1, firstly, one side of a printing medium (7) is vertically arranged in a line from top to bottom with a dot area ratio of 0% (substantially nothing). ) 10%, 20%, 40%, 50%, 60%, 70
%, 80%, 90%, 100%
One patch (3) is arranged, and the rows of the patch (3) group are arranged from right to left side in the halftone dot area ratios 0 to 1 as described above.
A Y-color chart printed with the process ink yellow (Y) arranged in the number of rows corresponding to 10% increments up to 00%, that is, 11 rows.

Subsequently, as shown in the ab coordinate system of the Lab color system in FIG. 2, the process ink yellow (Y) and the ab
A chart of a single color R adjacent to the right side of the coordinates in the special color ink red (R) and arranged in the vertical and horizontal directions opposite to the process ink yellow (Y), that is, as shown in FIG.
0% (substantially nothing) in dot area ratio, 10%, 2
0%, 40%, 50%, 60%, 70%, 80%, 90
11 and 11 patches (3) are arranged in order of 10% from 100% to 100%, and the rows of the patches (3) are arranged vertically from the top to the above 10% from the halftone dot area ratio of 0 to 100%.
The R single color chart printed with the special color ink red (R) arranged in the number of columns corresponding to the step, ie, 11 columns, is superimposed on the Y single color chart obtained above, and the gravure printing special color YR sample chart ( YR1).

Similar to the special color YR sample chart for gravure printing (YR1), the process ink yellow (Y) shown in the ab coordinate system of FIG. 2 and the special color ink grass (G) adjacent to the left side.
And a special color YG sample chart for gravure printing (not shown) composed of a combination of the process ink red (M) and the special color ink red (R) adjacent above. Zu), a special color MB sample chart for gravure printing (not shown) composed of a combination of process ink red (M) and special color ink purple (B) adjacent to the lower side, adjacent to the process ink indigo (C) on the right side Gravure printing special color CB sample chart (not shown) in combination with special color ink purple (B), and gravure printing in combination with process ink indigo (C) and special color ink grass (G) adjacent to the upper left It is possible to obtain a total of six types of special color sample charts for gravure printing, including special color CG sample charts (not shown).

From a practical point of view, a special color YC sample chart for gravure printing (for example, a combination of a process ink yellow (Y) shown in the ab coordinate system of FIG. 2 and a process ink indigo (C) not adjacent thereto) (FIG. (Not shown) can also be used when turbid green is required. If this turbid green is to be obtained using yellow (Y) and grass (G) inks, it must be obtained by a three-color mixture system using the opposite color of the ab coordinate system in FIG. Using the opposite colors of the ab coordinate system of yellow (Y) and indigo (C) as described above to create turbid green,
This is because it is efficient because it can be obtained by two-color mixing. This is why it is better to create the red (M) and yellow (Y) systems and the indigo (C) and red (M) systems in the same meaning as the yellow (Y) and indigo (C) systems. Good.

In the present invention, for example, as shown in FIG. 3, the dot area ratio is 40%, 60%, 8
Four patches (3) consisting of 0% and 100% are arranged, and the rows of these patches (3) are arranged from right to left side in the dot area ratios of 40%, 60%, 80% and 100%. Number of rows up to%, ie process ink red (M) arranged in 4 rows
A two-color gravure printing special color sample chart is obtained by superimposing an M monochromatic chart printed by the above with a Y monochromatic chart whose arrangement is opposite to that of the process ink red (M). A special tone YMBL sample chart for gravure printing (YMBL1) in which a chart consisting of (BL) is superimposed can also be used.

As described above, by overlaying the black ink chart on the two-color chart with another process ink or special color ink, it is possible to obtain various gray tone special color sample charts for gravure printing.

In the present invention, the printing medium (7) shown in FIG. 1 is used as a transparent film, for example, as shown in the side sectional view of FIG. 4, a special color sample chart for gravure printing is provided on the back surface of the transparent film (7a). A special color sample chart for gravure printing (1) on which the printing layer (1a) is formed can be used as a practical special color sample chart for a soft packaging material in the case of film back printing.

In the present invention, as shown in the side sectional view of FIG. 5, for example, a printing layer (1a) of a special color sample chart for gravure printing is formed on the back surface of the transparent film (7a), and a white ink is further formed thereon. Is a gravure printing special color sample chart (1) having a white coating layer (8) formed of the following, which is practical when the film is back-printed and has a white coating to enhance the printed layer. A characteristic sample chart for a soft packaging material can also be used.

In the present invention, as shown in the side sectional view of FIG. 6, for example, a printing layer (1a) of a special color sample chart for gravure printing is formed on the back surface of the transparent film (7a), and an aluminum foil is further formed thereon. A special color sample chart (1) for gravure printing obtained by laminating (9) with a laminate. An aluminum foil for film back printing and for obtaining a printed layer having a metallic luster or for imparting a barrier property is used. It can also be used as a practical sample chart for a flexible packaging material when it is provided.

Further, in the present invention, as shown in the side sectional view of FIG. 7, for example, a printing layer (1a) of a special color sample chart for gravure printing is formed on the back surface of the transparent film (7a), and a white layer is further formed thereon. White coating layer made of ink (8)
And a gravure printing special color sample chart (1) in which an aluminum foil (9) is laminated by laminating thereon, and a white coating film for back printing of the film and for enhancing the printing layer is provided. A practical sample chart for a soft packaging material having an aluminum foil for imparting a barrier property can also be provided.

As the transparent film (7a), for example, a polyethylene terephthalate film, a polyethylene film, a nylon film or the like having a thickness of about 12 μm is used. As the white coating layer (8), a gravure white ink is used. It can be obtained with a thickness of about 5 μm by a printing method.

Further, in the present invention, the printing medium (7) shown in FIG. 1 is used as a paper base, and is used for practical gravure printing in the case of, for example, a paper container or a general printed matter (for example, a calendar). It can be a characteristic sample chart.

As described above, the inks actually used (process color inks yellow, red, indigo, special color inks purple, red,
Grass and further black ink), and the printed material (7) is also made to be a laminated body of the material actually used, so that it becomes almost the same as the real thing including the texture, so that the desired characteristic can be surely obtained in a shorter time. It is an object of the present invention to provide a gravure printing special color sample chart which enables selection of ink types to be obtained and their mixture, and which has no inconsistency regarding a color difference with a print client.

As the gravure printing special color sample chart (1) of the present invention, for example, a two-color gravure printing special color sample chart (1) as shown in FIG. The chart may be used as a booklet to provide a special color sample chart for gravure printing that is easy to carry and view.

The method of using the special color sample chart for gravure printing (1) of the present invention can be selected from the special color sample chart for gravure printing (1), which is a printing medium used in a meeting with a print client. The patch (3) is selected and instructed to the printer. The printer specifies the special color patch (3)
Formulate the ink based on the formula. For example, the special color patch (3) is composed of 80% yellow (Y) and red (Y) of the gravure printing special color YR sample chart (YR1) of the process ink yellow (Y) and the special color ink red (R) as shown in FIG. R) When the color of the special color patch (3a) of 60% is designated, the process ink yellow (Y) is 80% by weight and the special color ink red (R) weight is 6
By mixing 0% as a guide, almost any desired special color ink can be immediately obtained.

[0033]

As described above, the present invention has the following effects. That is, the process color inks yellow, red, and indigo and the process color inks yellow, red, and indigo complement the color gamut that cannot be obtained with only one side of the printing medium (purple without turbidity). By making a gravure printing color sample chart superimposed in a desired combination and printed by a gravure method, it is possible to select and mix ink types for obtaining a special color in a short time, and Color ink (yellow,
Since a clear special color ink that cannot be expressed only by red and blue) is added, a special color sample chart for gravure printing can be obtained in which a mismatch point does not occur with respect to a color difference from a print requester.

In addition, a chart made of black ink having a relatively small dot area ratio is superimposed on the above-mentioned two-color chart or the two-color chart in which the process inks yellow, red and indigo are superimposed. Thus, a special color sample chart for gravure printing that can be applied to a special color grayed with black ink can be obtained.

In addition, since the printed material is a transparent film used for a soft wrapping material in the field of packaging, the texture and the like become substantially the same as those of the actual product. It is an object of the present invention to provide a special color sample chart for gravure printing that can facilitate selection and mixing thereof and has no inconsistency regarding a color difference with a print client.

Further, when a white coating is further applied by film back printing in the case of a soft packaging material, an aluminum foil having a metallic luster or imparting a barrier property to the film back printing is provided, Even when this aluminum foil is provided on the top, the texture and color are almost the same as the real ones, so it is easy to select the type of ink and mix it to obtain a special color in a shorter time and surely And a special color sample chart for gravure printing without any inconsistency regarding color differences from the print client.

Further, by using the printing substrate as a paper base material used for a paper container in the field of packaging or a general calender, the texture and the like become substantially the same as the actual product, so that a special color can be surely obtained in a shorter time. The purpose of the present invention is to provide a special color sample chart for gravure printing that can easily select and mix ink types for printing, and that does not have inconsistencies regarding color differences from print requesters.

Accordingly, the present invention provides a color sample chart for printing, which is used as a guide for selecting ink types and mixing the same, in order to reproduce colors other than process colors in a single color or in a mixture, especially for gravure printing used in the field of packaging. It has excellent practical effects as a sample chart.

[Brief description of the drawings]

FIG. 1 is a front view illustrating an embodiment of a special color sample chart for gravure printing of the present invention.

FIG. 2 is an explanatory diagram showing ink for creating a special color sample chart for gravure printing of the present invention in ab coordinates in a Lab color system.

FIG. 3 is a front view illustrating another embodiment of a special color sample chart for gravure printing of the present invention.

FIG. 4 is an explanatory diagram showing one embodiment of a special color sample chart for gravure printing of the present invention in a side cross section.

FIG. 5 is an explanatory diagram showing another embodiment of a special color sample chart for gravure printing of the present invention in a side cross section.

FIG. 6 is an explanatory diagram showing another embodiment of a special color sample chart for gravure printing of the present invention in a side cross section.

FIG. 7 is an explanatory view showing another embodiment of a special color sample chart for gravure printing of the present invention in a side cross section.

FIG. 8 is an explanatory diagram in which a process ink for creating a conventional spot color sample chart is represented by ab coordinates in a Lab color system.

[Description of Signs] 1 {Special Color Sample Chart for Gravure Printing 1a} Print Layer 3} Special Color Patch 3a {Special Color Patch of 80% Yellow (Y), 60% Red (R) 7} Printed Material 7a ‥‥ Transparent film 8 ‥‥ White coating layer 9 ‥‥ Aluminum foil layer A ‥‥ Point on the line connecting M and C B ‥‥ Special color ink purple C ‥‥ Process ink indigo G ‥‥ Special color ink plant M ‥‥ Process ink red R 紅 Special color ink red Y ‥‥ Process ink yellow BL ‥‥ Black ink YR1 ‥‥ Special color YR sample chart for gravure printing YMBL1 ‥‥ Special color YMBL sample chart for gravure printing

Claims (6)

[Claims] A process ink is provided on one side of a printing medium.
This is a gravure printing special color sample chart in which indigo and special color inks, purple, grass, and red, which complement the color gamut of each ink, are superimposed in desired combinations and printed in a gravure method. A process in which the patches are arranged in order from 0 to 100% in increments of 10%, and the rows of these patches are arranged vertically or horizontally in the number of rows corresponding to the halftone dot area ratio from 0 to 100% in increments of 10%. A single-color chart composed of the ink yellow and the special color ink red or grass adjacent to the process ink yellow in the ab coordinate of the Lab color system and arranged in the vertical and horizontal directions opposite to the process ink yellow is superimposed on the monochromatic chart composed of the ink yellow. As in the case of the process ink yellow, the single color chart of the special color ink purple or red is superimposed on the single color chart of the process ink red. Gravure spot sample chart, characterized by comprising a single color chart made by spot inks grass or purple superimposed single color chart made by the process inks indigo. 2. A chart made of black ink having a desired halftone dot area ratio is superimposed on the entire surface of the two-color chart or on the entire surface of the two-color chart on which process inks yellow, red and indigo are superimposed. The special color sample chart for gravure printing according to claim 1, characterized in that: 3. The special color sample chart for gravure printing according to claim 1, wherein the printing medium is a transparent film. 4. A coating film made of white ink is formed on the entire surface of the printed chart.
Special color sample chart for gravure printing as described. 5. A gravure according to claim 3, wherein an aluminum foil or an aluminum deposit is laminated on the entire surface of the printed chart or on the entire surface of the coating film made of the white ink. Special color sample chart for printing. 6. The special color sample chart for gravure printing according to claim 1, wherein the printing medium is a paper base material.