JPH09218096A - Method and jig for measuring color of translucent sample - Google Patents

Abstract

PROBLEM TO BE SOLVED: To measure a color with high work efficiency by securing a fixed panel to a color measuring unit such that the fixed panel can slide on a back face panel. SOLUTION: The jig for measuring the color of a translucent sample is fixed to a color measuring unit 1. The jig comprises a fixed panel 2a having a notch matching with a sample case, a color measuring light intercepting plate, and a back face panel 2b having a notch matching with an intercepting plate insertion part and the sample case. The panel 2a is secured to the color measuring unit 1 such that it can slide on the back face panel. This structure enhances the work efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color measuring jig for a semitransparent sample and a color measuring method using the same.

[0002]

2. Description of the Related Art When a semitransparent sample is subjected to colorimetry, the translucent sample is measured by its spectral transmittance when the extinction coefficient follows the Lambert-Beer law. However, if the law is not followed, the spectral reflectance must be measured.
The problem at that time is that the background color of the sample is included in the measured value. This is due to the fact that the ground color cannot be completely hidden during color measurement in a liquid sample such as paint or a sample having a very thin cloth. Therefore, in the case of the above-mentioned sample which shows through, as a method for measuring the spectral reflectance of the sample itself, the measurement of the sample using the apparatus disclosed in Japanese Utility Model Laid-Open No. 60-165824 is used. A color method is disclosed.

In the above publication, the spectral reflectance R of the sample to be obtained is the spectral reflectance R1 when a white plate is applied to the background of the sample and the spectral reflectance R when a blackboard is applied to the background of the sample. It shows that it can be calculated from the reflectance R2, the spectral reflectance Rg1 of the white plate, and the spectral reflectance Rg2 of the blackboard. Then, a sample backrest device for color measurement as shown in FIG. 6 has been proposed, and it is possible to select a backrest having a different spectral reflectance and bring the sample into close contact with such an operation by a simple operation. There is a statement that work with good quality can be provided.

Therefore, in the case of a semitransparent sample, for example, a semitransparent liquid sample, the sample is put in a transparent container, a white plate is first applied as the background of the container to measure the color, and then the background of the same container is blackboarded. The measurement was performed using the backrest device disclosed in the above publication.

[0005]

However, in the above-mentioned conventional apparatus, when the white plate and the blackboard are alternately applied to the container for measurement, the white plate is measured as the back plate due to the mechanical limitation of the back support device. After coloring, the backrest is temporarily separated from the container for rotation of the backrest body, and the backboard is rotated from the white plate to the blackboard background, and the colorimeter again measures the color on the blackboard background.

In this case, in order to rotate the backrest body, the contact by the elastic supporting member is released, and the sample and the color measuring device are separated from each other. At this time, the part where the sample is attached to the color measuring device may be slightly different. Accurate color measurement cannot be performed unless the measured values of R1 and R2 are strictly the same in the same container of the measurement target, but the background is different, which causes a problem of color measurement error.

Further, in the above-mentioned conventional apparatus, there is a problem in that it takes too much working time to rotate the backrest main body and the working efficiency is low.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a color-measuring jig for a semi-transparent sample which has high working efficiency and high color-measuring accuracy, and a color-measuring method using the same. .

[0009]

The invention according to claim 1 of the present invention for achieving the above object is a jig for color measurement of a semitransparent liquid sample attached to a colorimeter, and the shape of a sample case. A flat plate-shaped fixed panel having a cutout portion conforming to, a colorimetric light blocking plate exhibiting different colorimetric values, and a rear panel having a notch portion conforming to the insertion portion of the colorimetric light blocking plate and the shape of the sample. The fixed panel is fixed to the colorimeter at a position where the colorimetric window of the colorimeter and the notch of the fixed panel are substantially aligned, and the fixed panel and the back panel are slidably connected. It is what

The invention according to claim 2 of the present invention is a jig for color measurement of a semitransparent thin sample attached to a colorimeter, and is a fixed panel provided under a colorimetric window of the colorimeter. When,
It is characterized in that it comprises a colorimetric light blocking plate exhibiting different colorimetric values, and a back panel comprising an insertion groove of the fixed panel, an insertion part of the colorimetric light blocking plate and a sample fixing means.

Further, the invention according to claim 3 is a color measurement method using the color-measuring jig of the semitransparent liquid sample according to claim 1, wherein the sample case is inserted into the cutout portion of the fixed panel. After that, insert the colorimetric light blocking plate with one colorimetric value into the insertion part of the back panel, move the back panel to the fixed panel side with the sliding member, press the colorimetric light blocking plate against the sample case,
After measuring the color with a colorimeter, and then pulling out the colorimetric light blocking plate with one colorimetric value from the insertion part of the rear panel,
After inserting the colorimetric light-blocking plate having another colorimetric value into the insertion part of the rear panel, colorimetry is performed by the colorimeter, and the two colorimetric values and colorimetric light-blocking plate obtained in the above steps are measured. Is a colorimetric value of a sample from two different colorimetric values, respectively.

The invention according to claim 4 is a color measurement method using a jig for color measurement of a semitransparent thin sample according to claim 2, wherein the sample is fixed by a fixing means of a rear panel. , Insert the colorimetric light blocking plate with one colorimetric value into the insertion part of the rear panel, insert the fixed panel into the insertion groove of the fixed panel provided on the rear panel, move the rear panel to the fixed panel side, and Press the color light shield plate against a thin sample, measure the color with a colorimeter, then pull out the colorimetric light shield plate with one colorimetric value from the insertion part of the rear panel, and then measure the other colorimetry. After inserting the colorimetric light blocking plate having the value into the insertion part of the rear panel, the colorimetry is performed by the colorimeter, and the two colorimetric values and the colorimetric light blocking plate obtained in the above process are different from each other.
It is a color measurement method for a semitransparent thin sample, which is characterized in that the color measurement value of the sample is obtained from two color measurement values.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, the color measuring device using the color measuring jig of the present invention comprises a color measuring device main body (1) and a color measuring jig (2).
Is a color measurement jig 1 as shown in FIGS. 2, 3 and 4, respectively.
There are embodiments such as (4), color measurement jig 2 (6), and color measurement jig 3 (8).

The color measuring device (1) shown in FIG. 1 is a known color measuring device, and has a color measuring window (1a) on the front face of the box of the color measuring device (1). This is an apparatus for measuring a color by bringing a sample into contact with the color measurement window (1a).

Next, a first embodiment of the color measuring jig (2) will be described. Color measurement jig 1 (4) according to the first embodiment
2A is a perspective view, FIG. 2B is a side view, and FIG.
As shown in the longitudinal sectional view in (c), it comprises a fixed panel (4a), a rear panel (4b), a colorimetric light blocking plate 1 (5), and a screw member (4d). The sample is a semitransparent liquid sample, for example, a paint, and an appropriate amount is put in a transparent case (4c) having an open upper surface. The sample case (4
The area of the section of c) is the color measurement window (1a) of the color measurement device (1).
Greater.

The fixed panel (4a) is connected to the sample case (4
It is a flat plate having a cutout portion (4a1) cut out in the shape of the cross section of c), and its thickness is thinner than the thickness of the sample case. Further, through holes (4e) for passing bolts are provided at four corners of the flat plate surface of the fixed panel, and screw holes (4f) are provided at least at two positions.

Next, the rear panel (4b) is a hollow rectangular parallelepiped having a notch (4b1) cut out in the sectional shape of the sample case (4c), and the colorimetric light blocking plate 1 (5) is provided on the upper surface thereof. ) Inserted part (4b) which is opened in conformity with the cross-sectional shape of
2). Further, the solid portion of the rear panel is provided with a through hole (4g) for inserting a bolt at a position corresponding to the screw hole (4f) of the fixed panel (4a). Further, in the state where the screw hole (4f) and the through hole (4g) are aligned, the cutout portion (4a1) of the fixed panel (4a) and the cutout portion (4b1) of the rear panel (4b) are aligned. , Notches (4b1) are provided.

Next, the colorimetric light blocking plate 1 (5) is an appropriate flat plate and has reference colors having different colorimetric values on its front and back surfaces.
Black (5a) and white (5b) are applied. This is not limited to the one coated directly on the blocking plate 1 (5), and may be one having a reference color plate attached. The area covered by the reference color is the sample case (4c).
It is designed to be larger than the cross section. Further, the flat plate (5) has an engaging portion (5c) at one end.

The fixing panel (4a) is fixed by bolts (4e) passing through through holes (4a2) provided at its four corners and screw holes (not shown) provided in the main body of the color measuring device (1). ing.

Fixed panel (4a) and rear panel (4b)
Are fixed by bolts (4d) passed through the through holes (4g) and screw holes (4f) provided in the fixing panel (4a). In this case, the sample case (4c) is provided between the fixed panel (4a) and the rear panel into which the colorimetric light blocking plate (5) is inserted, with the respective cutouts (4a1), (4b1).
The sample case (4c) is brought into contact with the color measurement window (1a) of the color measurement device (1) while the color measurement light blocking plate (5) is brought into contact with the sample case (4c). The length of the bolt (4d) and the screw hole (4
The depth of f) is designed. In addition, the sample case (4
If c) is thin and the bolt (4f) is too long, a spacer (4h) attached to the bolt (4f) is provided.

Regarding the materials of the members described above, the surface of the color measuring device (1) on the side of the color measuring window (1a), the surface of the sample case (4c), the reference color portion of the color measuring light blocking plate 1 (5). (5
The surfaces that come into contact with a) and (5b) are both made of materials having low frictional resistance.

Next, the operation of the color measuring jig (4) of the first embodiment having the above construction will be described. First, the fixing panel (4a) is fixed to the main body of the color measuring device (1) with four bolts (4e).

Then, the insertion portion (4) of the rear panel (4b) is
In b1), one surface of the colorimetric light blocking plate 1 (5), for example, black (5a) is inserted toward the sample case side (4c). After the insertion, the sample case (4c) is provided between the fixed panel (4a) and the rear panel, and the notch (4a
1) and (4b1). Then, the bolt (4d) passed through the through hole (4g) of the rear panel (4b) is screwed into the screw hole (4f) provided in the fixed panel (4a) to fix the bolt (4d). As a result, the sample case (4c) is brought into contact with the color measurement window (1a) of the color measurement device (1), and the colorimetric light blocking plate (5) is brought into contact with the sample case (4c). . In this state, the colorimetric window (1a) of the colorimetric device is covered with the sample case (4c), and the sample case (4c) is covered with the colorimetric light blocking plate (5).

Then, the colorimetric device (1) measures the spectral reflectance of the black background of the semitransparent sample contained in the sample case (4c).

Then, the insertion portion (4) of the rear panel (4b) is
After removing the colorimetric light blocking plate 1 (5) from b1),
The other opposite surface, for example white (5b), is attached to the sample case side (4
Insert again toward c). In this case, the colorimetric light blocking plate 1
Since the friction resistance between the surface of (5) and the sample case (4c) is low, the colorimetric cutoff plate 1 (5) can be detached without opening the screwing of the fixed panel (4a) and the rear panel (4b). Also, it can be easily inserted again.

Next, the color measuring device (1) measures the spectral reflectance of the white background of the semitransparent sample contained in the sample case (4c).

By the above operation, the spectral reflectance R1 when a white plate is applied to the background of the sample and the spectral reflectance R2 when the blackboard is applied to the background of the sample are measured,
The spectral reflectance R of the sample can be calculated from the spectral reflectance Rg1 of the white plate and the spectral reflectance Rg2 of the blackboard measured in advance.

Furthermore, another sample case (4
Another sample is put in c), the sample case (4c) is replaced, and then the spectral reflectances of the white background and the black background are measured as described above. In this case, the color measurement window (1
a), the surface of the colorimetric light blocking plate 1 (5) and the sample case (4
Since the frictional resistance with the c) is low, the sample case (4c) can be easily detached and reinserted without opening the screw engagement between the fixed panel (4a) and the rear panel (4b).

By repeating the above operation, the spectral reflectances of the white background and the black background of many samples can be easily measured, and the spectral reflectances of those samples can be measured.

Next, a second embodiment of the color measuring jig (2) will be described. Second embodiment color measurement jig 2 (6)
3A is a perspective view, FIG. 3B is a side view, and FIG.
As shown in the longitudinal sectional view in (c), it is a color measuring jig for a semitransparent sample placed in a sample case (4c), and is the same as the color measuring jig (4) shown in the first embodiment. Since the same symbols are attached to the portions, detailed description thereof will be omitted, and the differences will be described below.

First, although there is a difference in structure, the insertion portion (4b2) of the color measurement jig (4) has an opening only above it, while the color measurement jig (6 ) Insertion part (6b
2) has an opening on its side as well as on its upper side.

Next, regarding its operation, the colorimetric jig 1 (4) and the colorimetric light blocking plate 1 (5) of the first embodiment will be described.
The difference from the case where the spectral reflectance of the sample is obtained by using and is that when the colorimetric light blocking plate 1 (5) is replaced, it is necessary to remove the colorimetric light blocking plate 1 (5) once to replace the front and back sides. Colorimetric jig 2 (6) and colorimetric light blocking plate 2 according to the embodiment
When (7) and (7) are used, it is not necessary to separate them, and it is sufficient to slide them laterally. In this case, since the friction resistance between the surface of the colorimetric light blocking plate 2 (7) and the sample case (4c) is low, the fixed panel (4a) and the rear panel (4b) are
It is possible to facilitate the sliding of the colorimetry blocking plate 2 (7) without opening the screw engagement with.

Next, a third embodiment of the color measuring jig (2) will be described. As shown in FIG. 4, the colorimetric device using the colorimetric jig of the third embodiment includes a colorimetric device body (1), a colorimetric jig (2), and an urging means (3). More specifically, the color measurement jig (2) is a color measurement jig 3 as shown in FIG.
(8).

The urging means (3) has a fulcrum (3a) fixedly mounted on the main body of the color measuring device (1), and has a flat plate-shaped pressing plate (3).
b) has other fulcrums, these (3a) and (3b) are used as fulcrums, a rotation fulcrum (3c) is provided in the middle of the two, and these fulcrums are connected by a rod-shaped member (3d) And a biasing force applied by a leaf spring, a coil spring, rubber (not shown), or the like.

The colorimetric jig 3 (8) of the third embodiment is
FIG. 4A is a perspective view, FIG. 4B is a side view, and FIG.
Also, as shown in the top view of FIG. 4D, it is a color measurement jig for a sample that allows a thin sample to show through.

First, regarding the constitution, the color measurement jig 3 (8)
Consists of a fixed panel (8a) and a back panel (8b). The fixed panel (8a) is an L-shaped member, and is fixed to the main body of the color measuring device (1) by bolts (8c) at least at two points on the mounting surface (8a1) which is a vertical plane. The back panel (8b) is a rectangular parallelepiped having a hollow portion (8b2) whose upper side is open and a groove portion (8g) along the lower surface.

The back panel (8b) has a notch A (8b1) and a sample bonding portion (10) on the colorimetric window (1a) side of the colorimeter (1), and a notch B (8b3) on the opposite surface. Have.
The widths of the cutout portion A (8b1) and the cutout portion B (8b3) are both smaller than the width of the hollow portion (8b2). The width of the notch B (8b3) is designed to be larger than that of the push plate (3b) shown in FIG. Further, the groove portion (8g) has a shape matching the cross-sectional shape of the sliding surface (8a2) which is the horizontal plane of the fixed panel (8), and is a hole penetrating the solid portion of the rear panel (8b). is there. Furthermore, rear panel (8)
In the lower part of the groove (8b3), the notch C conforms to the shape of the mounting surface (8b1) of the fixed panel (8a).
(8b4).

The sample (8c) has a very thin backing and is adhered to the sample adhering portion (10). In this case, the areas of the sample (8c) and the cutout portion A (8b1) are larger than the area of the color measurement window (1a) of the color measurement device (1).

The thickness of the sample adhering portion (10) is changed depending on the sample in order to change the force to be adhered depending on the weight of the sample. Normally, the thickness of the sample adhesion part (10) depends on the specific gravity of the sample as described above, but is 1 to 0.05 m.
A sample having a thickness of m has a thickness of about 3 to 10 mm.

Next, the colorimetric light blocking portion (9) inserted into the hollow portion (8b2) is a three-dimensional solid having a convex cross-sectional shape, and the narrower width is the cutout portion. A (8b
1), the wider width is the hollow part B (8b).
Designed to meet 2). In addition, a reference color is applied or a reference color plate is attached to the contact portion with the sample.

Next, regarding the action, first, the mounting surface (8a1) of the fixing panel (8a) is fixed to the color measurement window side of the main body of the color measuring device (1) with the bolt (8c). Then, the sample (8c) is attached to the rear panel (8b) by the adhesive section (10).
Glue to Then, the sliding surface (8) of the fixed panel (8a)
a2) is fitted in the groove (8g) of the rear panel (8b) to lock the rear panel (8b) to the fixed panel (8a).

Next, the colorimetric light blocking portion (9) having the reference color, for example, white, in the hollow portion (8b2) is inserted from above. Then, the pressing plate (3b) of the biasing means (3) attached to the main body of the color measuring device (1) as shown in FIG. 1 is pressed against the back side of the colorimetric light blocking plate (9), and thereafter, Spectral reflectance is measured against the background of the reference color. After that, the pressing plate (3b) of the biasing means (3) is once opened from the rear side of the colorimetric light blocking plate (9), and then another reference color, for example, black,
Press on the back side of the colorimetric light blocking unit (9 ') having
Then, the spectral reflectance against the background of the reference color is measured.

In the case of the measuring jig 3 (8) of this embodiment, the biasing means (3) is once opened, but the rear panel (8b) is locked to the fixed panel (8a). And
It does not shift vertically or horizontally. After that, the colorimetric light blocking plate (9) is detached and reinserted, and then the urging means (3) is pressed again. At that time, the positional relationship between the colorimetric device (1) and the sample is left and right. There is no vertical shift.

By the above operation, the spectral reflectance R1 when the white plate is applied to the background of the thin sample (8c) which shows through, and the spectral reflectance R1 when the blackboard is applied to the background of the sample (8c) The reflectance R2 is measured, and from the spectral reflectance Rg1 of the white plate and the spectral reflectance Rg2 of the blackboard that have been measured in advance, the spectral reflectance R of the thin sample that shows through can be calculated.

Further, the sample has a high specific gravity, and even if it is thin, it is heavy, and the thickness of the adhesive member may vary in order to increase the strength of the adhesive member.
Is very thin and thinner than the mounting surface (8a1) of the fixed panel (8a), the mounting surface (8a1) of the fixed panel enters the notch C (8b4) of the rear panel (8b), and the sample (8c) And the surface of the main body of the color measuring device (1) can be in close contact with each other.

[0046]

As described in detail above, claim 1 of the present invention
According to the invention of claim 1, in performing the color measurement of the semi-transparent liquid sample, it is possible to provide a color measurement jig that can easily change the background of the container from the white plate to the blackboard without changing the measurement site of the sample case. It becomes possible and the working efficiency is extremely improved.

According to the second aspect of the present invention, in the color measurement of the translucent thin sample, the measurement site of the thin sample itself does not change so much that the background of the container is easily changed from the white plate. It is now possible to provide a color-measuring jig that can be replaced with a blackboard, and it has become possible to perform color-measuring work on thin materials, which had previously been inefficient work efficiency.

According to a third aspect of the present invention, there is provided a color measurement method using the color measurement jig according to the first aspect, in which the contact state between the sample case and the color measurement window is changed. Since the background plate can be replaced without opening, it is possible to measure at the exact same site, and it is extremely easy to measure semitransparent liquid samples that can be measured only by spectral reflectance. The color data will have extremely accurate measurements.

Further, according to the invention of claim 4 of the present invention, in addition to the effect of the color measuring method using the color measuring jig described in claim 2, the sample is limited to the one in the case. For example, even if the sample is very thin, the sample can be easily measured, and the measurement result with extremely high accuracy can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a color measurement device for liquid.

FIG. 2 is a perspective view, a side view, and a sectional view showing a color measurement jig 1.

FIG. 3 is a perspective view, a side view, and a sectional view showing a color measurement jig 2.

FIG. 4 is a perspective view showing a color measuring device for a thin object.

5A and 5B are a perspective view, a side view, and a top view showing a color measurement jig 3.

FIG. 6 is a perspective view showing a conventional color measurement device and a back support jig.

[Explanation of symbols]

 1 Colorimetric device 2 Colorimetric jig 3 Energizing means 4 Colorimetric jig 1 5 Colorimetric light blocking plate 1 6 Colorimetric jig 2 7 Colorimetric light blocking plate 2 8 Colorimetric jig 3 9 Colorimetric light blocking plate 3 10 Adhesive means

Claims (4)

[Claims] 1. A jig for color measurement of a semi-transparent liquid sample to be attached to a colorimeter, which has a flat plate-shaped fixed panel having a cutout portion conforming to the shape of a sample case, and each of which exhibits different colorimetric values. Comprised of a colorimetric light blocking plate and a back panel having a cutout that matches the shape of the sample and the insertion part of the colorimetric light blocking plate, at a position where the colorimetric window of the colorimeter and the cutout of the fixed panel are substantially aligned A jig for color measurement, wherein a fixed panel is fixed to a colorimeter and a fixed panel and a rear panel are slidably connected. 2. A jig for color measurement of a semitransparent thin sample attached to a colorimeter, wherein a fixed panel provided below a colorimetric window of the colorimeter and a colorimeter having different colorimetric values respectively. A color-measuring jig comprising a color light blocking plate and a rear panel including an insertion groove of the fixing panel, an insertion portion of the colorimetric light blocking plate, and a sample fixing means. 3. A color measurement method using the jig for color measurement of a semitransparent liquid sample according to claim 1, wherein one colorimetric value is measured after the sample case is inserted into the cutout portion of the fixed panel. Insert the colorimetric light blocking plate that you have into the insertion part of the back panel, move the back panel to the fixed panel side with the sliding member, press the colorimetric light blocking plate against the sample case, and measure the color with the colorimeter. Next, after pulling out the colorimetric light-blocking plate having one colorimetric value from the insertion part of the rear panel, inserting another colorimetric light-blocking plate having another colorimetric value into the insertion part of the rear panel, The semi-transparency is characterized in that the colorimetric value of the sample is obtained from the two colorimetric values obtained in the above process and the two colorimetric values that are different for each of the colorimetric light-shielding plates. Color measurement method for liquid samples. 4. A color measurement method using a jig for color measurement of a semitransparent thin sample according to claim 2, wherein the sample has a colorimetric value after the sample is fixed by a fixing means of a rear panel. Insert the colorimetric light blocking plate into the insertion part of the back panel, insert the fixed panel into the insertion groove of the fixed panel provided on the back panel, move the back panel to the fixed panel side, and push the colorimetric light blocking plate to the thin sample. Then, measure the color with a colorimeter, then pull out the colorimetric light blocking plate having one colorimetric value from the insertion part of the rear panel, and then install the other colorimetric light blocking plate having one colorimetric value. After inserting into the insertion part of the back panel, color measurement is performed with a colorimeter, and from the two colorimetric values obtained in the above process and two different colorimetric values of each of the colorimetric light blocking plates, A color measuring method for a semitransparent thin sample, which is characterized by obtaining a colorimetric value.