JP2000088652A - Colorimetric gage and its using method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and conveniently observe the color having a reduced density by forming a colorimetric part having printed dots of a white ink on a transparent sheet with the dot area ratio being within a specified range. SOLUTION: The colorimetric gage 3 has a colorimetric part 5 having printed dots of a white ink 6 on one surface center of a colorless transparent sheet 4 to the visible light which is made of an inorg. material e.g. glass, etc., or synthetic resin. The colorimetric part 5 is printed so that the dot area ratio is within a range of 10-90%. The colorimetric gage 3 is laid on a color sample and the color sample is observed in a specified range/angle through the colorimetric part 5. The dots of the white ink 6 uniformly shade the color of the color sample, the color of the white ink is mixed with the color of the color sample, as seen through transparent parts 7, and hence the condition that the color density of the color sample is reduced, the same as in the stipple method, can be observed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a colorimetric gauge suitable for use in a color sample such as a color ink used for color printing, and more particularly, to use a color sample of a light color by using a color sample of a dark color. The present invention relates to a colorimetric gauge capable of reproducing the same color.

[0002]

2. Description of the Related Art Today, swatches are frequently used in dealing in industrial products using color. For example, taking color printing of illustrations and posters as an example,
It is difficult for a designer, a printing company, and a plate making engineer to mutually confirm a design color and a print finish color. For this reason, the ink maker uses solid printing of reference color inks, classifies them by symbols, and separates and binds them easily.
They make and sell a color sample book (color guide) as shown in 1. When the orderer designates the color of the pattern 2 to the platemaker or the like, if the color sample book 1A with the symbol is separated from the color sample book 1 and attached to the manuscript, the designated color is definitely determined. Can be used (see Figure 2).

[0003]

By the way, since color samples are samples of many different color products manufactured by manufacturers, the number of color samples becomes enormous, and samples having the same color but different density tend to be omitted. In the case of the color printing described above, the color samples provided by the ink makers are mainly printed in the darkest color, and there are few color samples printed in different shades of the same color. For this reason, in order to see colors with different densities even for the same color, it is necessary to print the proofs many times with halftone dots changed in the size of halftone dots, and to use patterns with a small number of colors and shade differences. In such a case, colors are designated by almost the same color sample / symbol. Therefore, when the impression differs depending on the color depth, there is a problem that the work of color designation becomes complicated. The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a colorimeter capable of easily and easily observing a color with reduced density by observing it over a dark color sample. To provide a gauge.

[0004]

In order to solve the above-mentioned problems,
According to the present invention, a colorimetric portion formed by printing white ink in a halftone dot form on a colorless transparent sheet under visible light is provided, and the colorimetric portion has a dot area ratio of 10% to 90%. A colorimetric gauge formed therein is provided.

Here, it is preferable that a plurality of colorimetric portions having different dot area ratios are provided in a stepwise manner.

Preferably, a protective layer is provided on the colorimetric portion.

Further, according to the present invention, on a dark color sample, white ink is applied to a colorless transparent sheet under visible light in the form of halftone dots, and the halftone dot area ratio is 10% to 10%. A colorimetric gauge having a colorimetric portion printed so as to be within a range of 90% is overlapped, and the color sample is observed at a distance and angle within a predetermined range through the colorimetric portion. The use of the colorimetric gauge is also provided.

[0008]

The colorimetric portion of the colorimetric gauge having the above configuration is superimposed on a dark color sample, and when viewed from above at a certain distance, the color of the color sample is evenly blocked by the halftone white ink portion. And the color of the color swatch seen through the transparent part are mixed together, and the color density of the color swatch is reduced as in the case of the stippling method.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First, reference numeral 3 in FIGS. 3 and 4 denotes a colorimetric gauge according to the first embodiment of the present invention. The colorimetric gauge 3 is colorless and transparent under visible light, for example, an inorganic material such as glass, PET or the like. In the center of one surface of the transparent sheet 4 made of synthetic resin, a colorimetric portion 5 in which a white ink 6 described later is printed in a halftone dot shape is formed.

Reference numeral 6 denotes a white ink which forms the colorimetric portion 5. The white ink 6 is a known ink obtained by adding a white pigment such as titanium oxide to a resin varnish which is cured by a method such as thermal drying, thermal polymerization, or photocuring. Conventional ones can be used, but it is preferable that the whiteness after curing is close to the color of the paper of the color swatch used.
A matte surface is preferable to a matte one after curing (curing). Then, the white ink 6 is printed on the transparent sheet 4 in a halftone dot shape using an offset printing or screen printing technique.

Reference numeral 7 denotes a transparent portion of the colorimetric portion 5 to which the white ink 6 does not adhere, and the colorimetric portion 5 is partially transparent in the thickness direction of the transparent sheet 4 via the transparent portion 7. Is visible. Here, the area (halftone dot area ratio) of the portion of the colorimetric portion 5 where the white ink 6 is adhered is 10% to 10% of the transparent portion 7.
It must be within the range of 90%. If it is 10% or less, the effect of suppressing the color density of the color sample is low.
The appearance of the color sample differs depending on the surface gloss and the like of itself, and at 90% or more, there is almost no transparent portion 7 and there is no difference from looking at the color of the white ink 6, and both achieve the object of the present invention. Because you can't get it.

A more preferable value of the dot area ratio is 20% to 8%.
In the range of 0%, if the value is within this range, subtracting the numerical value of the dot area ratio from the value with the color of the color sample as it is as 100% reproduces the same color as the density reduced by the numerical value. Become like

Although not shown in the drawings of the present embodiment, halftone dots of the colorimetric portion 5 are provided somewhere on the transparent sheet 4, the colorimetric portion 5, or in a box, packaging, instruction manual, etc. of the colorimetric gauge 3. It is preferable to specify the area ratio.

The colorimetric gauge 3 according to the present embodiment has the above-described configuration, and a method of using the same will now be described.

The colorimetric gauge 3 is placed on a dark color sample (not shown) so as to cover the colorimetric portion 5. Then, the observer observes the color sample below the colorimetric portion 5 from an angle close to the direction perpendicular to the plane of the transparent sheet 4 with a distance such that the halftone dots of the colorimetric portion 5 are not clearly visible.

By setting the distance so that the halftone dots are not clearly visible, the color of the color sample is blocked by the white ink 6 of the halftone dots, and viewed through the color of the white ink 6 and the transparent portion 7. It is possible to observe a state in which the colors of the color samples are mixed and the density of the colors of the color samples is reduced in the same manner as in the stippling method. Here, the “distance at which a halftone dot is not clearly visible” varies depending on the eyesight of the observer, but is approximately 30 cm or more.

If the angle is set as close to perpendicular as possible, if the angle is too small, total reflection occurs on the surface of the transparent sheet 4, and only the scenery is reflected on the surface of the transparent sheet 4. This is because color samples cannot be seen.
The “angle as close to vertical as possible” is generally at least 30 degrees, depending on the material and surface condition of the transparent sheet 4.

With the above-described usage, the same effect can be obtained as if the observer had two different levels of color samples from one dark color sample.

Next, a second embodiment will be described with reference to FIGS. 5 to 7. Hereinafter, the same components as those in the above-described first embodiment will be denoted by the same reference numerals, and description thereof will be omitted. .

In the drawing, reference numeral 8 denotes a colorimetric gauge. The colorimetric gauge 8 is provided with a white ink 6 on a transparent sheet 4 in the same manner as the colorimetric gauge 3 of the first embodiment. Are provided with colorimetric portions 9, 10, 11, and 12 printed on the.

However, the feature of this embodiment is that the colorimetric portions 9-1
When the value of the halftone dot area ratio is between 20% and 80%,
That is, four different parts are provided in steps of%.

Here, in the colorimetric portion 9 having a low dot area ratio (20%), the area of the white ink 6 is small and the area of the transparent portion 7 is large as shown in FIG. High rate (8
As shown in FIG. 7, the colorimetric portion 12 has a large area of the white ink 6 and a small area of the transparent portion 7.

At the corners of the colorimetric parts 9 to 12, the dot area ratio of each colorimetric part is displayed as a scale 13, and the color obtained by subtracting the density from the basic color sample by some% is displayed. You can see at a glance if it can be displayed.

Thus, according to the present embodiment, by combining with one dark color sample, the color density differs in five steps of 20% from −80% to −0% of the original color sample. It has the same effect as having a color sample.

Next, FIGS. 8 and 9 show a colorimetric gauge 14 according to a third embodiment. The colorimetric gauge 14 is also similar to the colorimetric gauge 8 of the second embodiment described above.
A colorimetric portion composed of a white ink 6 and a transparent portion 7 is provided on the upper portion, and a plurality of colorimetric portions in which the value of the dot area ratio is changed stepwise are provided (not shown).

However, the colorimetric gauge 14 has white ink 6
Is provided with a protective layer 15 covering the colorimetric portion on the printing surface side. This protective layer 15 is colorless and transparent under visible light like the transparent sheet 4, and is preferably formed of a material that is hard to be worn and hard to be scratched or stained. May be formed by drying and hardening after coating, or a member formed in a sheet shape in advance may be formed on the transparent sheet 4 by bonding.

According to the present embodiment configured as described above, the coating film of the white ink 6 in the colorimetric portion is peeled off by abrasion due to use, or is damaged and becomes thin, so that the color of the color sample can be transmitted. Alternatively, the surface of the white ink 6 can be prevented from being stained and colored, and the durability can be improved. here,
FIG. 8 illustrates the case where the protective layer 15 is provided only on the side of the colorimetric portion where the white ink 6 is attached, but the present embodiment is not limited to this, and is provided on both sides of the transparent sheet 4 as shown in FIG. May be.

As described above, the present invention has been described in detail with reference to the first to third embodiments. However, the present invention is not limited to these embodiments, and can have a configuration rearranged within the scope of the claims. It is.

For example, each colorimetric gauge is shown as having a wide underlay plate, but may be formed as a small card.
May be combined with the color sample (color guide) shown in FIG.

In the second embodiment, a plurality of colorimetric portions 9 to 12 are formed on one transparent sheet 4. However, one colorimetric portion is provided on one transparent sheet. May be used in plural sets.

[0031]

As described in detail above, the colorimetric gauge of the present invention is used together with the darkest color sample, and the size of halftone dots can be obtained by halftone printing without preparing a light color sample. You can easily specify colors and check colors without having to print out the changed version many times for proof printing.

[Brief description of the drawings]

FIG. 1 is a color sample of a conventionally used color ink (book)
FIG.

FIG. 2 is an explanatory diagram showing a method of designating a symbol color using a color sample;

FIG. 3 is a plan view showing the colorimetric gauge according to the first embodiment of the present invention.

FIG. 4 is an enlarged sectional view taken in the direction of arrows IV-IV in FIG. 3;

FIG. 5 is a plan view showing a colorimetric gauge according to a second embodiment of the present invention.

FIG. 6 is an enlarged cross-sectional view in the direction of arrows VI-VI in FIG. 5;

FIG. 7 is an enlarged sectional view taken in the direction of arrows VII-VII in FIG. 5;

FIG. 8 is an enlarged sectional view showing a colorimetric gauge according to a third embodiment of the present invention.

FIG. 9 is a modified example of the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Color sample 1A Small piece of color sample 2 Design 3, 8, 14 Colorimetric gauge 4 Transparent sheet 5, 9, 10, 11, 12 Colorimetric part 6 White ink 7 Transparent part 13 Scale 15 Protection layer

Claims (4)

[Claims] 1. A colorimetric portion formed by printing white ink in a halftone dot on a colorless transparent sheet under visible light, wherein the colorimetric portion has a dot area ratio of 10% to 90%. A colorimetric gauge formed inside. 2. The colorimetric gauge according to claim 1, wherein said colorimetric portion is provided with a plurality of colorimetric portions having different values of halftone dot area in a stepwise manner. 3. The colorimetric gauge according to claim 1, wherein a protective layer is provided on the colorimetric portion. 4. A halftone dot of white ink on a colorless transparent sheet under visible light on a dark color sample, and the dot area ratio is within 10% to 90%. Using a colorimetric gauge having a colorimetric part printed thereon, and observing the color sample at a distance / angle within a predetermined range through the colorimetric part. .