WO2005064313A1 - 着色液体の光学特性測定方法及び装置 - Google Patents
着色液体の光学特性測定方法及び装置 Download PDFInfo
- Publication number
- WO2005064313A1 WO2005064313A1 PCT/JP2004/018025 JP2004018025W WO2005064313A1 WO 2005064313 A1 WO2005064313 A1 WO 2005064313A1 JP 2004018025 W JP2004018025 W JP 2004018025W WO 2005064313 A1 WO2005064313 A1 WO 2005064313A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- colored liquid
- measuring
- transparent plate
- dropping
- liquid
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/8422—Investigating thin films, e.g. matrix isolation method
Definitions
- the present invention relates to a method and an apparatus for measuring the optical properties of a colored liquid, which can measure the optical properties of a colored liquid such as paint or ink.
- Patent Document 1 discloses that a liquid film of a colored liquid is formed on a substrate surface under a certain condition using a doctor blade, a bar coater, or the like, and the liquid film is dried without drying using a non-contact spectrophotometer. There has been proposed a method of performing color matching in the above condition.
- This method utilizes a certain correlation between the color of the liquid film and the color of the dried film. Toning of the paint can be repeated in a short time until a liquid film of the corresponding color is obtained.
- a non-contact type spectrophotometer is used to measure the optical characteristics of the liquid film, and there is a problem that the variation in the colorimetric results is large!
- Patent Literature 2 and Patent Literature 3 propose a method in which a measuring cell is filled with a coloring liquid and the color of the coloring liquid is measured by a contact type spectrophotometer.
- Patent Document 1 JP-A-63-104900
- Patent Document 2 Japanese Patent Application Laid-Open No. 2001-50891
- Patent Document 3 JP 2003-156394 A
- an object of the present invention is to provide a method and an apparatus for measuring the optical properties of a colored liquid, which can easily and accurately measure the optical properties of the colored liquid.
- the object of the present invention is to provide a dropping step of dropping a coloring liquid on a horizontally disposed flat transparent plate, and a measuring step of measuring optical properties of the dropped coloring liquid from below the transparent plate.
- a method for measuring the optical properties of a colored liquid comprising:
- the measuring step preferably includes a step of starting the measurement after a lapse of a predetermined time from a drop starting force in the dropping step.
- the measuring step is performed by a spectrophotometer including an integrating sphere, a light source, and a detector.
- the object of the present invention is to provide a flat transparent plate arranged horizontally, a sampling means capable of taking a colored liquid and dropping the transparent liquid on the transparent plate, and a sampling means arranged below the transparent plate. And a measuring means for measuring the optical properties of the dropped colored liquid.
- a transporting means for transporting the sampling means between the container containing the colored liquid and the upper side of the transparent plate, and a sampling of the colored liquid by operating the sampling means
- the apparatus further includes a driving unit for performing dropping and dropping, and a control unit for controlling operations of the transporting unit and the driving unit.
- the control means starts the measurement by the measuring means after a lapse of a predetermined time from the start of the dropping of the colored liquid by the driving of the driving means.
- the sampling means may be configured in a dropper shape or a syringe shape.
- the coloring liquid may further include a frame-shaped outflow prevention member placed on the upper surface of the transparent plate.
- the measuring means includes a spectrophotometer having an integrating sphere, a light source, and a detector.
- FIG. 1 is a schematic configuration diagram of an apparatus for measuring optical properties of a colored liquid according to an embodiment of the present invention.
- FIG. 2 is a schematic configuration diagram of an apparatus for measuring optical properties of a colored liquid according to another embodiment of the present invention.
- FIG. 3 is a schematic configuration diagram of an apparatus for measuring optical properties of a colored liquid according to still another embodiment of the present invention.
- FIG. 4 is a view showing an example of a measurement result obtained by using the optical property measuring device for colored liquid shown in FIG. 3.
- FIG. 5 is a diagram showing another example of the measurement results obtained by using the optical property measuring device for colored liquid shown in FIG. 3.
- FIG. 1 is a schematic configuration diagram of an apparatus for measuring optical properties of a colored liquid according to an embodiment of the present invention.
- the optical characteristic measuring device is a spectrophotometer 10, a transparent plate 5 horizontally disposed above the spectrophotometer 10, and a force to be measured above the transparent plate 5. And a sampling member 7 for dropping the coloring liquid 6.
- the spectrophotometer 10 includes an integrating sphere 1 and a photodetector 2 that detects light emitted from the integrating sphere 1.
- the upper surface of the spectrophotometer 10 is a smooth surface, and the transparent plate 5 is placed on the smooth surface.
- An opening 4 communicating with the outside of the spectrophotometer 10 is formed in an upper part of the integrating sphere 1.
- a light source (not shown) such as a pulse xenon lamp is provided on the side surface of the integrating sphere 1.
- the light emitted from the light source is repeatedly diffused and reflected in the integrating sphere 1 while passing through the opening 4.
- the reflected light is reflected by the reflecting plate 3 and detected by the photodetector 2.
- the integrating sphere 1 employs a dZ8 optical system that conforms to various standards of JIS Z 8722, ISO 7724/1, and DIN 5033 Part 7.
- the size of the opening 4 is not particularly limited, but from the viewpoint of maintaining good measurement accuracy, the diameter is preferably about 30 mm, more preferably about 8 to 12 mm.
- the transparent plate 5 can also have a force such as quartz glass or borosilicate glass, and is formed in a flat plate shape in consideration of easy cleaning. If the thickness of the transparent plate 5 is too large, the light attenuation rate increases and the measurement accuracy decreases, while if the thickness is too small, a problem in strength tends to occur. Is more preferably 0.8 to 2 mm.
- the colored liquid 6 include products such as inks and paints, semi-finished products thereof, and materials for toning. Specifically, various toning primary colors, pigment pastes, varnishes, solvents, Alternatively, a mixture of two or more of these can be exemplified.
- the sampling member 7 has a dropper-like (pipette-like) configuration made of flexible resin. Aspirate colored liquid 6 and collect.
- the configuration of the sampling member 7 is not limited as long as the sampling member 7 can collect and drop the colored liquid 6 .
- the sampling member 7 is shaped like a syringe that collects and drops the colored liquid 6 by sliding a rod. It may be configured.
- the colored liquid 6 stored in the container (not shown) is collected by the sampling member 7 and a predetermined amount is dropped from above the transparent plate 5.
- the optical properties of the dropped colored liquid 6 can be measured by the spectrophotometer 10. That is, the light emitted from the light source (not shown) in the integrating sphere 1 is reflected by the colored liquid 6 through the opening 4 and the transparent plate 5 while being repeatedly diffused and reflected in the integrating sphere 1, and again. Return to the integrating sphere 1. Then, the reflected light is reflected by the reflector 3 and detected by the photodetector 2.
- the transparent plate 5 is replaced with a new one, and the next colored liquid 6 is dropped to perform the measurement sequentially.
- the spectrophotometer 10 other known configurations may be adopted in addition to the integrating sphere method. It is preferable that the surface of the used transparent plate 5 is cleaned and reused. On the other hand, the sampling member 7 may be disposable.
- the optical property measuring apparatus of the present embodiment measures the optical properties of the colored liquid 6 dropped on the transparent plate 5, so that the stain on the transparent plate 5 due to the colored liquid 6 can be minimized. Can be. Further, since the transparent plate 5 is flat, the surface of the transparent plate 5 to which the coloring liquid 6 has adhered can be easily cleaned. Therefore, compared to the conventional method of circulating the liquid to be measured, high measurement accuracy can be realized with a simple configuration.
- the measurement of the optical properties is preferably performed a plurality of times for the same kind of colored liquid 6, whereby the measurement accuracy can be further improved.
- the coloring liquid 6 dropped onto the transparent plate 5 may have a change in optical characteristics over time, such as a change in color due to adsorption of a pigment on the surface of the transparent plate 5. For this reason, the measurement by the spectrophotometer 10 is started after the dropping of the colored liquid 6 is started for the same type of colored liquid. It is preferable to make the time until the time constant constant. Specifically, it is preferable to set the time from the start of the dropping of the colored liquid 6 to the start of the measurement of the optical characteristics to a predetermined time of 10 seconds or less. This set time is preferably 2 to 5 seconds. More preferably, it is within the range.
- the setting time is determined in consideration of the time required for the dropped colored liquid 6 to spread on the surface of the transparent plate 5 and cover the opening 4, and the type of the pigment or dye in the colored liquid 6 or the colored liquid It is preferable to determine based on the viscosity of 6, for example.
- the viscosity of the colored liquid 6 may be adjusted to about 0.1 to 5 Pa's (at a rotation speed of 60 rpm and 20 ° C by a B-type rotational viscometer). preferable.
- the temperature of the colored liquid 6 is usually 10-30 ° C, preferably in the range of 15-25 ° C.
- a frame-shaped outflow prevention member 8 is placed on the transparent plate 5 as shown in FIG.
- the coloring liquid 6 may be dropped on the region.
- FIG. 2 the same components as those in FIG. 1 are denoted by the same reference numerals.
- the outflow prevention member 8 examples include a synthetic resin such as PTFE (polytetrafluoroethylene) having solvent resistance, and a metal such as SUS304 (austenitic stainless steel). As with the transparent plate 5, the outflow prevention member 8 is preferably cleaned and reused after replacement.
- PTFE polytetrafluoroethylene
- SUS304 austenitic stainless steel
- the sampling and dropping of the colored liquid 6 by the sampling member 7 can be performed manually.
- the optical property measuring device has the configuration shown in FIG.
- the collection, dropping, and measurement of the optical characteristics of the colored liquid can be automatically performed.
- the optical characteristic measuring device shown in FIG. 3 includes a multi-axis robot 11 having a grip unit 13 for gripping the upper side wall of the sampling member 7, and is configured to be able to transport the sampling member 7 to a desired position.
- the gripping unit 13 is configured to be able to adjust the gripping force of the sampling member 7, and functions as a driving unit that operates the sampling member 7 to collect and drop the colored liquid. That is, the side wall of the sampling member 7 is pressed by increasing the gripping force of the sampling member 7 and the colored liquid 6 is dropped, while the side wall of the sampling member 7 is released by weakening the gripping force of the sampling member 7.
- the gripping unit 13 is provided with a drive unit that moves the rod along the axial direction, and the sampling member 7 is operated by the drive unit.
- the multi-axis robot 11 uses a transport XY robot capable of moving the sampling member 7 along two axes, that is, the vertical direction and the horizontal direction, and contains the colored liquid 6.
- the sampling member 7 can be transported between the container 15 and the upper part of the transparent plate 5.
- the multi-axis robot 11 may be an arm type robot other than the XY robot as long as it is a transfer robot (material handling robot) having a gripping function.
- the adjustment of the gripping force by the gripping unit 13, the transport by the multi-axis robot 11, and the measurement by the spectrophotometer 10 can be controlled by the control device 12.
- the sampling member 7 is conveyed to the container 15 by the multi-axis robot 11 while being pressed by the holding unit 13, and the sampling member 7 is When the pressing of the grip unit 13 is released while the tip is immersed in the coloring liquid 6, the coloring liquid 6 is collected by the sampling member 7.
- the sampling member 7 is conveyed by the multi-axis robot 11 to a position above the transparent plate 5 in the direction indicated by the arrow in FIG. 3, the sampling member 7 is pressed by the The coloring liquid is dropped.
- the control means 12 also starts the measurement by the spectrophotometer 10 after the elapse of a predetermined time from the drop starting force due to the pressing of the grip unit 13.
- the predetermined time can be determined by the above-described method, and can be appropriately set by the measurer and stored in the memory of the control means 12 in advance.
- the optical characteristic measuring apparatus of the present embodiment can automatically manage the time from the start of the dropping of the colored liquid to the start of the measurement, so that the reproducibility is high and the measurement can be more easily realized. Can be.
- a plurality of sampling members 7 are stored in a stocker (not shown) in advance.
- the sampling member 7 is returned to the original storage position, and the new sampling member 7 is gripped by the grip unit 13 to take out the stocker force, and the optical characteristics of the colored liquid 6 are measured by the above-described procedure. be able to.
- the change of the color difference ⁇ ⁇ ⁇ ⁇ with respect to the time (elapsed time) from the drop of each paint to the color measurement (elapsed time) was measured for the following three kinds of paints.
- Red paint an alkyl containing a perylene pigment (red) and titanium white (titanium oxide)
- Yellow paint Alkyd resin baking paint containing monoazo pigment (yellow) and titanium white (titanium oxide)
- Blue paint Alkyd resin baking paint containing copper phthalocyanine pigment (blue) and titanium white (titanium oxide)
- the temperature of each paint was adjusted to 20 ° C (viscosity was about 0.8 Pa's), and the colorimetric timing was controlled by the control device 12 to 100 seconds every 5 seconds from the start of dropping.
- the colorimetry is performed three times for each color paint, and the colorimetric value at 0 second of the first colorimetric measurement is used as the reference value.
- the color difference ⁇ was determined.
- Figure 4 shows the results.
- the color difference ⁇ greatly changes, particularly within the range of 10 seconds after the start of color measurement, and the time from the start of the dropping of the paint to the start of the measurement of the force-optical characteristics.
- this is set in this time zone, it is difficult to maintain measurement accuracy unless the set time for each measurement is constant.
- Fig. 5 shows the result of calculating the color difference ⁇ ⁇ ⁇ from the difference. As is evident from the results, the color difference ⁇ was 0.14 at the maximum (0.11 at the maximum in the average), and highly accurate colorimetry was possible with any of the paints.
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- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005516559A JPWO2005064313A1 (ja) | 2003-12-25 | 2004-12-03 | 着色液体の光学特性測定方法及び装置 |
US10/583,038 US20070111320A1 (en) | 2003-12-25 | 2004-12-03 | Method and apparatus for measuring optical characteristics of colored liquid |
EP04820883A EP1712895A1 (en) | 2003-12-25 | 2004-12-03 | Method and apparatus for measuring optical characteristics of colored liquid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003428487 | 2003-12-25 | ||
JP2003-428487 | 2003-12-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005064313A1 true WO2005064313A1 (ja) | 2005-07-14 |
Family
ID=34736275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/018025 WO2005064313A1 (ja) | 2003-12-25 | 2004-12-03 | 着色液体の光学特性測定方法及び装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070111320A1 (ja) |
EP (1) | EP1712895A1 (ja) |
JP (1) | JPWO2005064313A1 (ja) |
WO (1) | WO2005064313A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS646847U (ja) * | 1987-06-30 | 1989-01-13 | ||
JPH0823783A (ja) * | 1994-07-08 | 1996-01-30 | Satake Eng Co Ltd | 葉の成分量を基にした植物の生育管理方法 |
JPH08327533A (ja) * | 1995-06-05 | 1996-12-13 | Hitachi Ltd | 生化学分析装置 |
JPH1073535A (ja) * | 1996-07-16 | 1998-03-17 | Boehringer Mannheim Gmbh | 微小なサンプル量を検知するための手段を備えた分析装置 |
JP2002243550A (ja) * | 2001-02-20 | 2002-08-28 | Minolta Co Ltd | 光学特性測定装置 |
JP2003240705A (ja) * | 2001-12-14 | 2003-08-27 | Fuji Photo Film Co Ltd | 測定チップ |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7027147B2 (en) * | 2001-03-19 | 2006-04-11 | E. I. Dupont De Nemours And Company | Method and apparatus for measuring the color properties of fluids |
US20050019223A1 (en) * | 2001-08-10 | 2005-01-27 | Platt Albert Edward | Liquid delivery apparatus and method |
-
2004
- 2004-12-03 US US10/583,038 patent/US20070111320A1/en not_active Abandoned
- 2004-12-03 WO PCT/JP2004/018025 patent/WO2005064313A1/ja not_active Application Discontinuation
- 2004-12-03 EP EP04820883A patent/EP1712895A1/en not_active Withdrawn
- 2004-12-03 JP JP2005516559A patent/JPWO2005064313A1/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS646847U (ja) * | 1987-06-30 | 1989-01-13 | ||
JPH0823783A (ja) * | 1994-07-08 | 1996-01-30 | Satake Eng Co Ltd | 葉の成分量を基にした植物の生育管理方法 |
JPH08327533A (ja) * | 1995-06-05 | 1996-12-13 | Hitachi Ltd | 生化学分析装置 |
JPH1073535A (ja) * | 1996-07-16 | 1998-03-17 | Boehringer Mannheim Gmbh | 微小なサンプル量を検知するための手段を備えた分析装置 |
JP2002243550A (ja) * | 2001-02-20 | 2002-08-28 | Minolta Co Ltd | 光学特性測定装置 |
JP2003240705A (ja) * | 2001-12-14 | 2003-08-27 | Fuji Photo Film Co Ltd | 測定チップ |
Also Published As
Publication number | Publication date |
---|---|
EP1712895A1 (en) | 2006-10-18 |
JPWO2005064313A1 (ja) | 2007-12-20 |
US20070111320A1 (en) | 2007-05-17 |
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