Fiber holder and fiber coloring method

Abstract

The fiber holding tool comprises: a support body having a support surface for supporting a fiber to be subjected to color measurement; and a pair of protrusions provided on the support body. The support surface is disposed between the pair of protrusions, and the fibers are disposed between the pair of protrusions so as not to exceed the tops of the pair of protrusions. The support body is provided with a pair of protrusions, the reflectance of light having wavelengths of 450 nm, 550 nm, and 650 nm on the support surface is 60% or more, the visual reflectance Y of the support surface is 60 or more (wherein the light source is a CIE standard light source D65, and the field of view is 10 DEG), and the height of the pair of protrusions with respect to the support body is 1-3 mm (inclusive).

Description

Technical Field

[0001] The present invention relates to the colorimetry of fibers. Background Art

[0002] When measuring the color of fibers (for example, hair bundles), the color may be measured to be darker than the actual color due to edge loss error, and it is not possible to obtain a color measurement result close to the result when the fibers are visually evaluated.

[0003] In addition, various techniques are known regarding the color measurement of hair bundles (for example, refer to Patent Document 1, Patent Document 2, and Patent Document 3).

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 61-029724

[0007] Patent Document 2: Japanese Patent Application No. 2019-514004

[0008] Patent Document 3: Japanese Patent Application No. 2016-529509 Summary of the invention

[0009] Problems to be solved by the invention

[0010] Therefore, an object of the present invention is to perform colorimetric measurement on fibers and obtain colorimetric results close to the results obtained when the fibers are visually evaluated.

[0011] Methods for solving problems

[0012] The fiber retaining device of the present invention is constructed as follows: it has a supporting body having a supporting surface for supporting a fiber as a colorimetric object, and a pair of protrusions arranged on the above-mentioned supporting body, the above-mentioned supporting surface is arranged between the above-mentioned pair of protrusions, the above-mentioned fiber is arranged between the above-mentioned pair of protrusions in a manner not exceeding the top of the above-mentioned pair of protrusions, the reflectivity of light with wavelengths of 450nm, 550nm and 650nm on the above-mentioned supporting surface is 60% or more, the visual reflectivity Y of the above-mentioned supporting surface is 60 or more (wherein the light source is CIE standard light source D65, and the field of view is set to 10°), and the height of the above-mentioned pair of protrusions relative to the above-mentioned supporting body is 1mm or more and 3mm or less.

[0013] According to the fiber retaining device constructed as described above, the support body has a support surface for supporting the fiber as the color measurement object. A pair of protrusions are provided on the support body. The support surface is arranged between the pair of protrusions. The fiber is arranged between the pair of protrusions in a manner not exceeding the top of the pair of protrusions. The reflectivity of light with wavelengths of 450nm, 550nm and 650nm on the support surface is 60% or more. The visual reflectivity Y of the support surface is 60 or more (wherein the light source is CIE standard light source D65 and the field of view is set to 10°). The height of the pair of protrusions relative to the support body is 1mm or more and 3mm or less.

[0014] In addition, in the fiber holding tool of the present invention, the height of the pair of protrusions with respect to the support body may be 1 mm or more and 2 mm or less.

[0015] It should be noted that, in the fiber holding tool of the present invention, the support surface may be white paper.

[0016] In addition, in the fiber holding tool of the present invention, a transparent member may be disposed on the upper portion of the pair of protrusions.

[0017] In addition, in the fiber holding tool of the present invention, the pair of protrusions may extend parallel to each other.

[0018] The fiber colorimetric method of the present invention is constructed as follows: it includes the steps of configuring fibers and measuring the color of the fibers; in the step of configuring fibers, on a fiber retaining device having a supporting surface for supporting the fibers as the colorimetric object and a pair of protrusions provided on the supporting body, the fibers are supported on the supporting surface and configured between the pair of protrusions in a manner not exceeding the tops of the pair of protrusions; the supporting surface is configured between the pair of protrusions, the reflectivity of light with wavelengths of 450nm, 550nm and 650nm on the supporting surface is greater than 60%, the visual reflectivity Y of the supporting surface is greater than 60 (wherein the light source is CIE standard light source D65 and the field of view is set to 10°), and the height of the pair of protrusions relative to the supporting body is greater than 1mm and less than 3mm.

[0019] According to the fiber colorimetric method constructed as described above, on a fiber retaining device having a support body having a support surface for supporting the fiber to be colorimetrically measured and a pair of protrusions provided on the support body, the fiber is supported on the support surface and arranged between the pair of protrusions in a manner not exceeding the top of the pair of protrusions. Then, the fiber is colorimetrically measured. The support surface is arranged between the pair of protrusions. The reflectivity of light with wavelengths of 450nm, 550nm and 650nm on the support surface is 60% or more. The visual reflectivity Y of the support surface is 60 or more (wherein the light source is CIE standard light source D65 and the field of view is set to 10°). The height of the pair of protrusions relative to the support body is 1mm or more and 3mm or less.

[0020] It should be noted that, in the fiber colorimetric method of the present invention, the height of the pair of protrusions relative to the support may be greater than or equal to 1 mm and less than or equal to 2 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a plan view of the fiber holding tool 1 according to the first embodiment ( Figure 1 (a))、main view( Figure 1 (b)).

[0022] Figure 2 This is a plan view of the fiber 10 held by the fiber holding tool 1 of the first embodiment ( Figure 2 (a))、main view( Figure 2 (b)). DETAILED DESCRIPTION

[0023] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0024] First embodiment

[0025] Figure 1 is a plan view of the fiber holding tool 1 according to the first embodiment ( Figure 1 (a))、main view( Figure 1 (b)). Figure 2 This is a plan view of the fiber 10 held by the fiber holding tool 1 of the first embodiment ( Figure 2 (a))、main view( Figure 2 (b)).

[0026] The fiber holding device 1 of the first embodiment includes a support surface 4S, a bottom 4B, and a pair of protrusions 2a and 2b. It should be noted that the support surface 4S and the bottom 4B constitute a support body. That is, the support body has a support surface 4S and a bottom 4B. The support surface 4S supports the fiber 10 as a color measurement object. The fiber 10 is, for example, a hair bundle.

[0027] A pair of protrusions 2a and 2b are provided on the bottom 4B. The pair of protrusions 2a and 2b extend parallel to each other. Figure 1 (a), the protrusions 2a and 2b are longitudinally sectioned at the bottom 4B, but the bottom 4B need not be longitudinally sectioned. Figure 1 (a)), the longitudinal lengths of the protrusions 2a and 2b may be shorter than the longitudinal length of the bottom 4B.

[0028] It should be noted that the support surface 4S is disposed between the pair of protrusions 2a and 2b. The support surface 4S is, for example, white paper placed on the bottom 4B.

[0029] It should be noted that the reflectivity of light with wavelengths of 450nm, 550nm and 650nm on the support surface 4S is 60% or more. In addition, the visual reflectivity Y of the support surface 4S is 60 or more (where the light source is CIE standard light source D65 and the viewing field is 10°).

[0030] The height t of the pair of protrusions 2a and 2b relative to the bottom 4B (hereinafter, sometimes described as "the height t of the pair of protrusions 2a and 2b" or "height t") is greater than 1 mm and less than 3 mm. It should be noted that the thickness of the support surface 4S is so thin as to be negligible (about 0.1 mm) compared with the height t of the pair of protrusions 2a and 2b.

[0031] The fiber 10 is arranged between the pair of protrusions 2a and 2b so as not to exceed the tops 2aT and 2bT of the pair of protrusions 2a and 2b (see Figure 2 (b)).

[0032] A transparent member 8 is disposed above the pair of protrusions 2a and 2b. The transparent member 8 is, for example, TEMPAX glass.

[0033] Next, a method of measuring the color of the fiber 10 using the fiber holding tool 1 according to the first embodiment will be described.

[0034] First, the fiber 10 (for example, a bundle of hair) is supported on the support surface 4S and arranged between the pair of protrusions 2a and 2b so as not to exceed the tops 2aT and 2bT of the pair of protrusions 2a and 2b. Then, the transparent member 8 is placed on the tops 2aT and 2bT of the pair of protrusions 2a and 2b (see Figure 2 ).

[0035] Furthermore, in Figure 2 In the state shown, the fiber 10 is colorimetrically measured. The colorimetric measurement is performed by irradiating the fiber 10 with measurement light from a position above the transparent member 8 and measuring the reflected light from the fiber 10.

[0036] Two types of hair bundles (hair bundle 1 and hair bundle 2) were selected as fibers 10 to test whether color measurement results close to those obtained by visually evaluating the fibers 10 can be obtained by color measurement using the fiber holder 1 of the first embodiment.

[0037] (Experimental Step 1)

[0038] First, the hair bundle 1 and the hair bundle 2 are visually inspected, and the color samples 1 and 2 that match the colors are selected. Then, the color sample 1 that matches the color of the hair bundle 1 is 299U (a color that is roughly similar to blue), and the color sample 2 that matches the color of the hair bundle 2 is 603U (a color that is roughly similar to yellow). 299U and 603U are color samples of SOLID CHIPS Uncoated THE PLUS SERIES / PANTONE (registered trademark).

[0039] (Experimental Step 2)

[0040] Next, the color sample and the hair bundle were measured using a spectrophotometer. The measurements were performed five times and the results were averaged. The spectrophotometer used was CM-3600A / Konica Minolta.

[0041] In addition, the color sample passes through the opening diameter / The color was measured by SCE (measurement after removing the regular reflected light) and TEMPAX glass, with synthetic paper as the background.

[0042] In addition, the diameter of the opening through which the hair bundle passes / The colorimetry was performed by SCE. The fiber holder 1 of the first embodiment was used to perform the colorimetry on the fiber 10. The experiment was performed with the height t set to 1, 2, 3, 4, and 5 mm. TEMPAX glass was used as the transparent member 8.

[0043] (Experimental step 3)

[0044] The color difference ΔE00 between the color measurement result of the color sample and the color measurement result of the hair bundle was calculated (wherein the light source was CIE standard light source D65 and the viewing field was 10°). If ΔE00 was 5 or less, it was evaluated as good. If ΔE00 exceeded 5, it was evaluated as poor.

[0045] Here, “good” means that the color measurement using the fiber holder 1 of the first embodiment provides a color measurement result close to the result obtained when the fiber 10 is visually evaluated (ie, the color measurement result of the color sample).

[0046] On the other hand, “bad” means that the color measurement using the fiber holder 1 of the first embodiment does not produce a color measurement result close to the result of visual evaluation of the fiber 10 (ie, the color measurement result of the color sample).

[0047] Table 1 shows the experimental results related to the hair bundle 1. It should be noted that the color measurement results of the color sample 1 and the hair bundle 1 are shown using the L*a*b* coordinate system.

[0048] [Table 1]

[0049] With support surface 4S

[0050]

[0051] 0K: Good

[0052] NG: Bad

[0053] Table 2 shows the experimental results related to the hair bundle 2. It should be noted that the color measurement results of the color sample 2 and the hair bundle 2 are shown using the L*a*b* coordinate system.

[0054] [Table 2]

[0055] With support surface 4S

[0056]

[0057] 0K: Good

[0058] NG: Bad

[0059] From the experimental results of the hair bundle 1 and the hair bundle 2, it is understood that the height t is good when it is 1 mm or more and 3 mm or less.

[0060] If the height t exceeds 3 mm, the hair bundles 1 and 2 are too thick, and the reflected light becomes too dark due to the edge loss error of the measurement light escaping from the inside of the hair bundles 1 and 2 to the outside. In addition, it is difficult to make the height t less than 1 mm from the perspective of the volume of the hair bundles 1 and 2. Therefore, as described above, the height t is good when it is greater than 1 mm and less than 3 mm.

[0061] As a comparative example, the results of experiments performed at heights t = 1 and 2 mm are shown for a structure in which the support surface 4S is removed from the fiber holding tool 1 of the first embodiment. Table 3 shows the results of experiments on the hair bundle 1 . Table 4 shows the results of experiments on the hair bundle 2 .

[0062] [Table 3]

[0063] No support surface 4S

[0064]

[0065] NG: Bad

[0066] [Table 4]

[0067] No support surface 4S

[0068]

[0069] NG: Bad

[0070] Both the bristle bundle 1 and the bristle bundle 2 are defective without the support surface 4S.

[0071] This means that due to the presence of the support surface 4S (for example, white paper), the measurement light is reflected by the support surface 4S, and the reflected light becomes bright. If there is no support surface 4S, the reflection of the measurement light becomes less, and the reflected light becomes too dark. Therefore, the presence of the support surface 4S is good.

[0072] According to the fiber holding tool 1 of the first embodiment, by setting the height t to 1 mm to 3 mm and providing the support surface 4S, the fiber 10 can be colorimetrically measured to obtain a colorimetric result close to that obtained when the fiber 10 is visually evaluated.

[0073] Second embodiment

[0074] The fiber holder 1 of the second embodiment is different from the fiber holder 1 of the first embodiment (height t is 1 mm to 3 mm) in that the height t of the pair of protrusions 2a and 2b relative to the bottom 4B of the support body is 1 mm to 2 mm.

[0075] As described in the first embodiment, when the hair bundle 1 (color similar to blue) and the hair bundle 2 (color similar to yellow) are selected as the fiber 10, if the height t is 1 mm or more and 3 mm or less, a color measurement result close to the result of visually evaluating the fiber 10 can be obtained. In other words, if the color of the fiber 10 is appropriately selected, a good evaluation can be obtained as long as the height t is 1 mm or more and 3 mm or less.

[0076] However, depending on the color selected as the fiber 10, if the height t is not greater than 1 mm and less than 2 mm, it is impossible to obtain a color measurement result close to the result when the fiber 10 is visually evaluated. This case is described as a second embodiment. That is, if the color of the fiber 10 is not limited, the height t must be greater than 1 mm and less than 2 mm.

[0077] The fiber holding tool 1 of the second embodiment is the same as the fiber holding tool 1 of the first embodiment except that the height t is 1 mm or more and 2 mm or less.

[0078] The method of measuring the color of the fiber 10 using the fiber holder 1 of the second embodiment is the same as the method of measuring the color of the fiber 10 using the fiber holder 1 of the first embodiment.

[0079] It should be noted that three types of hair bundles (hair bundle 3, hair bundle 4, and hair bundle 5) were selected as fibers 10 to conduct experiments to verify whether color measurement results close to those obtained when the fibers 10 were visually evaluated can be obtained by color measurement using the fiber retaining tool 1 of the second embodiment.

[0080] (Experimental Step 1)

[0081] First, the hair bundle 3, hair bundle 4, and hair bundle 5 are visually checked, and color samples 3, color sample 4, and color sample 5 that match these colors are selected. Then, the color sample 3 that matches the color of the hair bundle 3 becomes J25-70A (a color roughly similar to gray), the color sample 4 that matches the color of the hair bundle 4 becomes 3252U (a color roughly similar to green), and the color sample 5 that matches the color of the hair bundle 5 becomes 673U (a color roughly similar to pink).

[0082] Among them, J25-70A is the 2017 J version of the standard color for paint (pocket version) / color sample of the Japan Paint Industry Association, and 3252U and 673U are color samples of SOLID CHIPS Uncoated THE PLUS SERIES / PANTONE (registered trademark).

[0083] (Experimental Step 2)

[0084] As in the first embodiment, description thereof will be omitted.

[0085] (Experimental step 3)

[0086] As in the first embodiment, description thereof will be omitted.

[0087] Table 5 shows the experimental results related to the hair bundle 3. It should be noted that the color measurement results of the color sample 3 and the hair bundle 3 are shown using the L*a*b* coordinate system.

[0088] [Table 5]

[0089] With support surface 4S

[0090]

[0091] 0K: Good

[0092] NG: Bad

[0093] Table 6 shows the experimental results related to the hair bundle 4. It should be noted that the color measurement results of the color sample 4 and the hair bundle 4 are shown using the L*a*b* coordinate system.

[0094] [Table 6]

[0095] With support surface 4S

[0096]

[0097] 0K: Good

[0098] NG: Bad

[0099] Table 7 shows the experimental results related to the hair bundle 5. It should be noted that the color measurement results of the color sample 5 and the hair bundle 5 are shown using the L*a*b* coordinate system.

[0100] [Table 7]

[0101] With support surface 4S

[0102]

[0103] 0K: Good

[0104] NG: Bad

[0105] From the experimental results of the bristle bundle 3, the bristle bundle 4, and the bristle bundle 5, it was found that the height t was good when it was 1 mm or more and 2 mm or less.

[0106] In addition, as a comparative example, the results of experiments performed at heights t = 1 and 2 mm are shown for the structure in which the support surface 4S is removed from the fiber holding tool 1 of the second embodiment. Table 8 shows the experimental results related to the hair bundle 3. Table 9 shows the experimental results related to the hair bundle 4. Table 10 shows the experimental results related to the hair bundle 5.

[0107] [Table 8]

[0108] No support surface 4S

[0109]

[0110] NG: Bad

[0111] [Table 9]

[0112] No support surface 4S

[0113]

[0114] NG: Bad

[0115] [Table 10]

[0116] No support surface 4S

[0117]

[0118] NG: Bad

[0119] Any of the bristle bundles 3, 4, and 5 is defective if there is no support surface 4S.

[0120] According to the fiber holder 1 of the second embodiment, by setting the height t to 1 mm to 2 mm, the fiber 10 can be colorimetrically measured even without limiting the color of the fiber 10, and a colorimetric result close to that obtained when the fiber 10 is visually evaluated can be obtained.

[0121] Description of Reference Numerals

[0122] 1: fiber holding tool, 2a, 2b: a pair of protrusions, 2aT, 2bT: top, 4S: supporting surface, 4B: bottom, 8: transparent member, 10: fiber.

Claims

1. A fiber holding device comprising: a support body having a support surface for supporting a fiber to be color-measured, and a pair of protrusions disposed on the support body; The supporting surface is arranged between the pair of protrusions, The fiber is arranged between the pair of protrusions in a manner not exceeding the top of the pair of protrusions, and the reflectivity of light with wavelengths of 450nm, 550nm and 650nm on the support surface is 60% or more, The visual reflectivity Y of the support surface is greater than 60, wherein: The light source is CIE standard light source D65, and the field of view is set to 10°. The height of the pair of protrusions relative to the support body is not less than 1 mm and not more than 3 mm.

2. The fiber holding device according to claim 1, wherein: The height of the pair of protrusions relative to the support body is 1 mm or more and 2 mm or less.

3. The fiber holding tool according to claim 1 or 2, wherein: The supporting surface is white paper.

4. The fiber holding tool according to claim 1 or 2, wherein: A transparent member is disposed on the upper portion of the pair of protrusions.

5. The fiber holding tool according to claim 1 or 2, wherein: The pair of protrusions extend parallel to each other.

6. A fiber colorimetric method, comprising the steps of configuring a fiber and measuring the color of the fiber; In the step of arranging the fibers, on a fiber holding device having a support body having a support surface for supporting the fibers to be color-measured and a pair of protrusions provided on the support body, the fibers are supported on the support surface and arranged between the pair of protrusions in a manner not exceeding the tops of the pair of protrusions; The supporting surface is arranged between the pair of protrusions, The reflectivity of light with wavelengths of 450nm, 550nm and 650nm on the supporting surface is 60% or more. The visual reflectivity Y of the support surface is greater than 60, wherein: The light source is CIE standard light source D65, and the field of view is set to 10°. The height of the pair of protrusions relative to the support body is not less than 1 mm and not more than 3 mm.

7. The fiber colorimetric method according to claim 6, wherein: The height of the pair of protrusions relative to the support body is 1 mm or more and 2 mm or less.

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