Color measurement system, backing plate, and color measurement device

Abstract

A color measurement system, a backing plate, and a color measurement device are disclosed. When a backing member is downsized in consideration of portability, it is possible that the area of the backing member becomes smaller than that of a color measurement target, making it difficult to determine the position of the backing member, resulting in a measurement position deviating from the backing member. The color measurement system is characterized by including: a color measurement device that performs color measurement on a color measurement target; a backing plate that is disposed below the color measurement target; and a position alignment unit that performs position alignment of the backing plate and the color measurement device in a state in which the backing plate is disposed below the color measurement target and the entirety of the backing plate is covered by the color measurement target.

Description

Technical Field

[0001] This invention relates to a color measuring system comprising a color measuring device and a backing plate. Furthermore, this invention relates to a backing plate used for color measuring and a color measuring device. Background Technology

[0002] When performing colorimetric measurements using a colorimetric device, if the object being measured is thin and has high light transmittance, such as a sheet, the measured value may sometimes be affected by the background color, resulting in inaccurate readings. To avoid this problem, as shown in Patent Document 1, measurements have conventionally been performed by placing a backing component under the object being measured. The backing component is typically white or black, and its performance is specified by ISO 13655, an international standard.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2013-205067 Summary of the Invention

[0004] In scenarios where portable colorimetric devices are used, miniaturization of the backing component is required to ensure portability. However, when miniaturization of the backing component results in its area being smaller than the area of ​​the object being measured, the entire backing component becomes hidden under the object, making it difficult to determine its position and causing the colorimetric position to deviate from the backing component.

[0005] To solve the above-mentioned technical problems, the backing plate of the present invention is characterized in that the backing plate is disposed under a color measuring object that is color measured by a color measuring device, and the backing plate has a light-emitting part that can emit light toward the color measuring object.

[0006] Furthermore, the backing plate of the present invention is characterized in that the backing plate is disposed under a color measuring object that is color measured by a color measuring device, and the backing plate has a magnet in the position facing the color measuring device.

[0007] Furthermore, the color measurement system of the present invention is characterized by comprising: a color measurement device for measuring the color of a color measurement object; a backing plate disposed below the color measurement object; and a position alignment unit for aligning the backing plate with the color measurement device when the backing plate is disposed below the color measurement object and the entire backing plate is covered by the color measurement object.

[0008] Furthermore, the color measuring device of the present invention is characterized in that the color measuring device measures the color of a color measuring object, and has a power supply coil at a position facing a backing plate disposed below the color measuring object, the power supply coil supplying power to a light-emitting part of the backing plate through a power receiving coil provided on the backing plate.

[0009] Further, the color measurement device of the present application is characterized in that the color measurement device is provided with a device-side magnet at a position facing a backing sheet arranged below the color measurement object, a polarity of the device-side magnet facing the backing sheet being opposite to a polarity of a sheet-side magnet provided in the backing sheet.

[0010] Further, the color measurement device of the present application is characterized in that the color measurement device is provided with a device-side magnet at a position facing a backing sheet arranged below the color measurement object, a polarity of the device-side magnet facing the backing sheet being opposite to a polarity of a sheet-side magnet provided in the backing sheet. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a perspective view of the color measurement device as viewed from below.

[0012] Figure 2 is a cross-sectional view of the color measurement device taken by an X-Z plane at a center position of an opening portion.

[0013] Figure 3 is a perspective view of a color measurement system, a color measurement device, and a backing sheet according to the first embodiment.

[0014] Figure 4 is a perspective view of a color measurement system, a color measurement device, and a backing sheet according to the first embodiment.

[0015] Figure 5 is a perspective view of a color measurement system, a color measurement device, and a backing sheet according to the second embodiment.

[0016] Figure 6 is a perspective view of a color measurement system, a color measurement device, and a backing sheet according to the third embodiment.

[0017] Figure 7 is a perspective view of a color measurement system, a color measurement device, and a backing sheet according to the fourth embodiment.

[0018] BRIEF DESCRIPTION OF DRAWINGS

[0019] 1A, 1B, 1C, 1D: color measurement device; 2: housing; 2a: bottom surface; 2b: opening portion; 2c: upper surface; 3: device internal unit; 4: incident light processing portion; 5: light emitting portion; 6: color measurement battery; 7: operation portion; 8: display portion; 9: control portion; 12: power transmission coil; 50A, 50B, 50C, 50D: backing plate; 51: light emitting portion; 52: switch; 53: light emitting battery; 54: power receiving coil; 59A, 59B: position alignment unit; 60: device side first permanent magnet; 61: device side second permanent magnet; 62: plate side first permanent magnet; 63: plate side second permanent magnet; 65: first magnetic sensor; 66: second magnetic sensor; 100A, 100B, 100C, 100D: color measurement system; Pa: placement surface; Pb: color measurement object. DETAILED DESCRIPTION

[0020] The present application is described below.

[0021] The backing plate of the first aspect is characterized in that the backing plate is disposed below a color measurement object that is measured by a color measurement device, and the backing plate has a light emitting portion that emits light toward the color measurement object.

[0022] According to the present aspect, since the backing plate disposed below the color measurement object that is measured by the color measurement device has the light emitting portion that emits light toward the color measurement object, even if the entire backing plate is hidden below the color measurement object, the backing plate and the color measurement device can be aligned in position by the light emitted from the light emitting portion passing through the color measurement object, and color measurement can be performed properly.

[0023] The second aspect is characterized in that, in the backing plate of the first aspect, a power receiving coil that obtains power from a power transmission coil provided in the color measurement device is provided, and the light emitting portion emits light by receiving power from the power receiving coil.

[0024] According to the present aspect, since the backing plate is configured to have the power receiving coil that obtains power from the power transmission coil provided in the color measurement device, and the light emitting portion emits light by receiving power from the power receiving coil, the thickness of the backing plate can be made thin, the portability of the backing plate can be improved, and color measurement work can be performed easily.

[0025] The backing plate of the third aspect is characterized in that the backing plate is disposed below a color measurement object that is measured by a color measurement device, and the backing plate has a magnet at a position facing the color measurement device.

[0026] According to the present aspect, since the backing plate disposed below the color measurement target in color measurement by the color measurement device has the magnet at a position facing the color measurement device, even if the entire backing plate is hidden under the color measurement target, the position alignment of the backing plate and the color measurement device can be performed by the magnet, and color measurement can be performed properly.

[0027] The fourth aspect is characterized in that, in the third aspect, the magnet has a polarity opposite to a polarity of a magnet of the color measurement device facing the backing plate.

[0028] According to the present aspect, since the magnet has a polarity opposite to a polarity of a magnet of the color measurement device facing the backing plate, the position alignment of the backing plate and the color measurement device can be performed reliably by an attractive force between the magnet on the backing plate side and the magnet on the color measurement device side.

[0029] The fifth aspect is a color measurement system characterized by comprising: a color measurement device that performs color measurement on a color measurement target; a backing plate disposed below the color measurement target; and a position alignment unit that performs position alignment of the backing plate and the color measurement device in a state where the backing plate is disposed below the color measurement target and the entire backing plate is covered by the color measurement target.

[0030] According to the present aspect, since the color measurement system includes the position alignment unit that performs the position alignment of the backing plate and the color measurement device, even if the entire backing plate is hidden under the color measurement target, color measurement can be performed properly.

[0031] The sixth aspect is characterized in that, in the fifth aspect, the position alignment unit includes a light emitting portion provided to the backing plate and capable of emitting light toward the color measurement target.

[0032] According to the present aspect, since the position alignment unit includes the light emitting portion provided to the backing plate and capable of emitting light toward the color measurement target, even if the entire backing plate is hidden under the color measurement target, the position alignment of the backing plate and the color measurement device can be performed by the light emitted from the light emitting portion passing through the color measurement target, and color measurement can be performed properly.

[0033] The seventh aspect is characterized in that, in the sixth aspect, the color measurement device includes a power transmission coil, the backing plate includes a power receiving coil that obtains electric power from the power transmission coil, and the light emitting portion emits light by receiving electric power from the power receiving coil.

[0034] According to the present aspect, since the color measurement device is configured to include a power transmission coil, the backing plate includes a power reception coil that receives power from the power transmission coil, and the light emitting portion receives power from the power reception coil to emit light, the thickness of the backing plate can be reduced, the portability of the backing plate can be improved, and color measurement work can be easily performed.

[0035] In the fifth aspect, the position alignment unit includes a device-side magnet provided in the color measurement device to face a position of the backing plate, and a plate-side magnet provided in the backing plate to face a position of the color measurement device, the device-side magnet and the plate-side magnet are opposable, and opposable with opposite polarities.

[0036] According to the present aspect, since the position alignment unit includes the device-side magnet provided in the color measurement device and the plate-side magnet provided in the backing plate, the two are opposable, and opposable with opposite polarities, the position alignment of the backing plate and the color measurement device can be reliably performed by the attractive force between the device-side magnet and the plate-side magnet.

[0037] In the fifth aspect, the position alignment unit includes a magnet provided in the backing plate to face a position of the color measurement device, and a magnetic sensor provided in the color measurement device to detect the magnetism of the magnet.

[0038] According to the present aspect, since the position alignment unit includes the magnet provided in the backing plate to face a position of the color measurement device, and the magnetic sensor provided in the color measurement device to detect the magnetism of the magnet, even if the entire backing plate is hidden under the color measurement object, the position alignment of the backing plate and the color measurement device can be performed by the magnetic sensor detecting the magnetism of the magnet, and color measurement can be reasonably performed.

[0039] In the ninth aspect, the position alignment unit includes a plurality of pairs of the magnet and the magnetic sensor, the color measurement device includes a display portion that displays information, and a control portion that controls the display portion to cause the display portion to display content indicating that all of the magnetic sensors have detected the magnet on the opposite side, when all of the magnetic sensors have detected the magnet on the opposite side.

[0040] According to the present aspect, since the position alignment unit has a plurality of pairs of the magnet and the magnetic sensor, the color measurement device has a display unit that displays information, and when all of the magnetic sensors detect the magnet on the opposite side, a control unit that controls the display unit causes the display unit to display content indicating that all of the magnetic sensors detect the magnet on the opposite side, so the user can easily grasp the position alignment of the backing plate and the color measurement device, and the usability is improved.

[0041] The color measurement device according to the eleventh aspect is characterized in that the color measurement device measures a color of a color measurement target, and the color measurement device has a power transmission coil at a position facing a backing plate arranged below the color measurement target, and the power transmission coil supplies electric power to a light emitting unit provided in the backing plate via a power reception coil provided in the backing plate.

[0042] According to the present aspect, since the power transmission coil provided in the color measurement device supplies electric power to the light emitting unit provided in the backing plate via the power reception coil provided in the backing plate, the position alignment of the backing plate and the color measurement device can be performed by the light emitted from the light emitting unit passing through the color measurement target, and the color measurement can be performed appropriately.

[0043] Further, the thickness of the backing plate can be made thin, the portability of the backing plate is improved, and the color measurement work is also easy.

[0044] The color measurement device according to the twelfth aspect is characterized in that the color measurement device measures a color of a color measurement target, and the color measurement device has a device side magnet at a position facing a backing plate arranged below the color measurement target, and a polarity of the device side magnet facing the backing plate is opposite to a polarity of a plate side magnet provided in the backing plate facing the color measurement device.

[0045] According to the present aspect, the position alignment of the backing plate and the color measurement device can be performed reliably by the attractive force between the backing plate side magnet and the color measurement device side magnet.

[0046] The color measurement device according to the thirteenth aspect is characterized in that the color measurement device measures a color of a color measurement target, and the color measurement device has a magnetic sensor at a position facing a backing plate arranged below the color measurement target, and the magnetic sensor is positioned to be able to detect a magnet provided in the backing plate.

[0047] According to the present aspect, even if the entire backing plate is hidden under the color measurement target, the position alignment of the backing plate and the color measurement device can be performed by the magnetic sensor detecting the magnet, and the color measurement can be performed appropriately.

[0048] The present application will be described in detail below.

[0049] In addition, the XYZ coordinate system shown in each figure is an orthogonal coordinate system, with the XY plane being a horizontal plane and the YZ plane and XZ plane being vertical planes.

[0050] The Z-axis direction is the vertical direction, intersecting the upper surface 2c and the bottom surface 2a of the colorimetric device 1A. Furthermore, the Z-axis direction is parallel to the optical axis CL, which will be described later.

[0051] Furthermore, when observing the color measuring device 1A from the Z-axis direction, the Y-axis direction is the direction of the long side of the device, and when observing the color measuring device 1A from the Z-axis direction, the X-axis direction is the direction of the short side of the device.

[0052] In this specification, the structure of the color measuring device 1A is described assuming that a color measuring object Pb is mounted on a surface parallel to the horizontal plane and the long side of the color measuring device 1A is along the Y-axis.

[0053] exist Figure 1 as well as Figure 2 In this device, the colorimetric apparatus 1A has a structure for measuring color based on light Mb arriving from the colorimetric object Pb.

[0054] The colorimetric device 1A has an internal unit 3 inside the housing 2 that constitutes the outer casing of the device. In other words, the internal unit 3 is covered by the housing 2. The length of the housing 2 in the Y-axis direction is longer than its length in the X-axis direction. The user holds and uses the device with the Y-axis side facing forward.

[0055] The internal unit 3 of the device includes an incident light processing unit 4 that processes the light Mb incident on the device. Detailed description of the incident light processing unit 4 is omitted, but in this embodiment, the incident light processing unit 4 includes an optical filter (not shown).

[0056] This optical filter allows any wavelength component of the light Mb incident on the device to selectively pass through. The light passing through the optical filter is then incident on a light-receiving element (specifically a photodiode, not shown). The intensity of the incident light is then converted into a voltage value and output to a control unit (not shown). The colorimetric device 1A measures the spectrum of the colorimetric object Pb by repeatedly performing wavelength selection and light intensity acquisition based on the aforementioned optical filter. In this embodiment, the optical filter is a wavelength-variable Fabry-Perot etalon, which is a wavelength filter utilizing multiple interference from two opposing reflective surfaces. Of course, the incident light processing unit 4 is not limited to having such an optical filter.

[0057] The wavelength-variable Fabry-Perot etalon is configured to perform wavelength selection by controlling the Z-axis direction interval of a pair of mirrors (not shown) disposed in opposition at an interval in the Z-axis direction.

[0058] An opening portion 2b is formed in the bottom surface 2a of the device, and light Mb from the color measurement target Pb toward the incident light processing portion 4 is introduced into the inside of the device via the opening portion 2b. The opening portion 2b is an opening portion that constitutes a right circular shape centered on the optical axis CL. The optical axis CL is the optical axis of the light Mb from the color measurement target Pb toward the incident light processing portion 4.

[0059] The device inside unit 3 has a light emitting portion 5 inside the opening portion 2b. Light Ma emitted from the light emitting portion 5 is directed toward the outside of the device via the opening portion 2b and irradiates the color measurement target Pb that opposes the bottom surface 2a.

[0060] Further, the device inside unit 3 has a color measurement battery 6 that is a power supply source of the device, and power is supplied from the color measurement battery 6 to the incident light processing portion 4, the light emitting portion 5, and the like via a voltage adjustment circuit that is not shown.

[0061] In addition, in the color measurement system 100A, Figure 2 The reference numeral 9 is a control portion that performs various controls on the color measurement device 1A.

[0062] First Embodiment

[0063] Next, the color measurement system 100A, the color measurement device 1A, and the backing plate 50A related to the first embodiment will be described with reference to Figure 3 , Figure 4 The color measurement system 100A has the color measurement device 1A that measures the color of the color measurement target Pb and the backing plate 50A that is disposed below the color measurement target Pb. The reference numeral Pa is a placement surface on which the color measurement target Pb and the backing plate 50A are placed.

[0064] Figure 3 A state in which the backing plate 50A is placed on the placement surface Pa and the color measurement target Pb in the form of a sheet and the color measurement device 1A are to be placed above it is shown. Figure 4 A state in which the backing plate 50A is placed on the placement surface Pa, the color measurement target Pb is placed thereon, and the color measurement device 1A is to be placed above it is shown.

[0065] The upper surface of the backing plate 50A is a white backing surface in accordance with ISO 13655, which is an international standard, and the color measurement target Pb in the form of a sheet is measured by the color measurement device 1A in a state in which the backing plate 50A is disposed below the color measurement target Pb. The same applies to other embodiments described below.

[0066] The backing plate 50A has a position alignment unit for aligning the positions of the backing plate 50A and the color measurement device 1A in a state where the entire backing plate 50A is covered by the color measurement object Pb. The same applies to other embodiments described below.

[0067] In the present embodiment, the position alignment unit is constituted by the light emitting portion 51.

[0068] A light emitting battery 53 is provided inside the backing plate 50A, and the light emitting portion 51 emits light by power supplied from the light emitting battery 53. The light emitting portion 51 is constituted so that the emission of light can be turned on and off by a switch 52. Both the light emitting portion 51 and the switch 52 are provided so as not to protrude from the upper surface of the backing plate 50A.

[0069] In addition, in the present embodiment, the light emitting battery 53 is a secondary battery that can be repeatedly used by being charged, and can be charged by being supplied with power from an external device or an external power source through a not-shown connection terminal provided to the backing plate 50A. Alternatively, the backing plate 50A can be constituted so that the light emitting battery 53 is charged by a solar panel (not shown) provided to the backing plate 50A.

[0070] In Figure 3 , Figure 4 In the present embodiment, the area of the X-Y plane of the backing plate 50A is smaller than the area of the color measurement object Pb, and as shown in Figure 4 , the entire backing plate 50A can be hidden under the color measurement object Pb. In this state, it can be difficult to grasp the position of the backing plate 50A, and the opening portion 2b of the color measurement device 1A, that is, the color measurement position, can deviate from the backing plate 50A. However, as shown in Figure 4 , the position of the backing plate 50A can be grasped by the light emitted from the light emitting portion 51 passing through the color measurement object Pb, the positions of the backing plate 50A and the color measurement device 1A can be aligned, and further, the color measurement can be properly performed.

[0071] In addition, in the present embodiment, the light emitting portion 51 is provided to the four corners of the backing plate 50A, but is not limited thereto, and at least one light emitting portion 51 can be provided. However, by providing a plurality of light emitting portions 51, the position of the backing plate 50A can be more easily grasped. In particular, as in the present embodiment, by providing the light emitting portion 51 to the four corners of the backing plate 50A, the position of the entire backing plate 50A can be easily grasped.

[0072] In addition, as an example, the light emitting portion 51 can be constituted by a white LED.

[0073] Second Embodiment

[0074] Next, referring to Figure 5A second embodiment of the colorimetric system, colorimetric device, and backing plate will be described. Furthermore, in each embodiment described below, the same reference numerals are used for structures identical to those in previously described embodiments, and repeated descriptions are omitted. Additionally, in each embodiment described below, [the following is omitted] Figure 3 , Figure 4 The diagram shows the mounting surface Pa and the colorimetric object Pb.

[0075] exist Figure 5 The diagram shows the color measurement system 100B, color measurement device 1B, and backing plate 50B according to the second embodiment.

[0076] The backing plate 50B includes a receiving coil 54 that receives power from the color measuring device 1B via a power supply coil 12 provided on the color measuring device 1B. That is, the power supply coil 12 and the receiving coil 54 constitute a wireless power supply system. Furthermore, the light-emitting part 51 is configured to receive power from the receiving coil 54 and emit light.

[0077] The color measuring device 1B has a power supply coil 12 facing the backing plate 50B disposed under the color measuring object Pb. The power supply coil 12 supplies power to the light-emitting part 51 of the backing plate 50B through the power receiving coil 54 of the backing plate 50B.

[0078] The color measurement system 100B includes a color measurement device 1B and a backing plate 50B configured as described above.

[0079] Based on this structure, compared with a structure that includes a battery, it is easier to make the backing plate 50B thinner, thereby improving the portability of the backing plate 50B and making color measurement easier.

[0080] Third Implementation Method

[0081] Next, refer to Figure 6 A third embodiment of the colorimetric system, colorimetric device, and backing plate will be described. Figure 6 The figure shows the color measuring system 100C, color measuring device 1C, and backing plate 50C according to the third embodiment.

[0082] The backing plate 50C has a permanent magnet at the position facing the colorimetric device 1C. In the following text, the permanent magnet is an example of a magnet. Reference numeral 62 indicates a first permanent magnet on the plate side, and reference numeral 63 indicates a second permanent magnet on the plate side.

[0083] In contrast, in the colorimetric device 1C, a permanent magnet is also provided at the position facing the backing plate 50C. Reference numeral 60 indicates the first permanent magnet on the device side, and reference numeral 61 indicates the second permanent magnet on the device side.

[0084] The color measuring device 100C includes the color measuring device 1C and the backing plate 50C described above.

[0085] The plate-side first permanent magnet 62, the plate-side second permanent magnet 63, the device-side first permanent magnet 60, and the device-side second permanent magnet 61 constitute a position alignment unit 59A for performing position alignment of the color measurement device 1C and the backing plate 50C.

[0086] The distance in the X-Y plane between the plate-side first permanent magnet 62 and the plate-side second permanent magnet 63 is equal to the distance in the X-Y plane between the device-side first permanent magnet 60 and the device-side second permanent magnet 61. Thus, in a state where the plate-side first permanent magnet 62 opposes the device-side first permanent magnet 60, the plate-side second permanent magnet 63 can oppose the device-side second permanent magnet 61.

[0087] Also, the plate-side first permanent magnet 62 and the device-side first permanent magnet 60 face each other with opposite polarities, for example, with an S-pole of the plate-side first permanent magnet 62 facing the color measurement device 1C and an N-pole of the device-side first permanent magnet 60 facing the backing plate 50C.

[0088] Further, the plate-side second permanent magnet 63 and the device-side second permanent magnet 61 also face each other with opposite polarities, for example, with an N-pole of the plate-side second permanent magnet 63 facing the color measurement device 1C and an S-pole of the device-side second permanent magnet 61 facing the backing plate 50C.

[0089] According to the above structure, since an attractive force is obtained between the plate-side first permanent magnet 62 and the device-side first permanent magnet 60 and an attractive force is obtained between the plate-side second permanent magnet 63 and the device-side second permanent magnet 61, position alignment of the backing plate 50C and the color measurement device 1C can be performed, and color measurement can be performed reliably.

[0090] In the above embodiment, as an example, the S-pole of the plate-side first permanent magnet 62 and the N-pole of the device-side first permanent magnet 60 face each other, and the N-pole of the plate-side second permanent magnet 63 and the S-pole of the device-side second permanent magnet 61 face each other, but of course, the present application is not limited thereto.

[0091] Further, in the above embodiment, the polarities of the device-side first permanent magnet 60 and the device-side second permanent magnet 61 facing the backing plate 50C are different, and the polarities of the plate-side first permanent magnet 62 and the plate-side second permanent magnet 63 facing the color measurement device 1C are different. Thus, for example, when the color measurement device 1C is rotated 180° in the X-Y plane from a state of Figure 6 the same polarities of the permanent magnets of the color measurement device 1C and the permanent magnets of the backing plate 50C face each other, and no attractive force is generated. According to such a structure, the posture of the color measurement device 1C with respect to the backing plate 50C can be specified to one, and thus the opening portion 2b of the color measurement position can reliably face the backing plate 50C.

[0092] However, it is also acceptable to set the polarity of the device-side first permanent magnet 60 and the device-side second permanent magnet 61 facing the backing plate 50C to be the same and to set the polarity of the plate-side first permanent magnet 62 and the plate-side second permanent magnet 63 facing the color measurement device 1C to be the same. In this case, it is preferable to configure such that even if the color measurement device 1C is rotated by 180° from the state shown in FIG. 17 in the X-Y plane, the opening portion 2b does not deviate from the backing plate 50C. Figure 6

[0093] Further, in the above-described embodiment, the device-side first permanent magnet 60 and the device-side second permanent magnet 61 are disposed on the diagonal line at the corner of the device bottom surface, but of course, this is not limiting, and for example, they can be disposed along the periphery of the opening portion 2b. Further, in the above-described embodiment, two permanent magnets are provided for each of the color measurement device 1C and the backing plate 50C, but this is not limiting, and one permanent magnet can be provided for each of the color measurement device 1C and the backing plate 50C, or three or more permanent magnets can be provided.

[0094] Further, in the above-described embodiment, permanent magnets are provided for each of the color measurement device 1C and the backing plate 50C, but a permanent magnet can be provided on one side and a metal member can be provided on the other side.

[0095] Further, in the above-described embodiment, an electromagnet can be used instead of the device-side first permanent magnet 60 and the device-side second permanent magnet 61. The electromagnet is normally set to a non-energized state, and is set to an energized state when the color measurement device 1C and the backing plate 50C are positionally aligned. The switching of the electromagnet from the non-energized state to the energized state can be configured to be performed by a dedicated switch, or can be configured to be switched from the non-energized state to the energized state by the turning on of the power of the device. By thus configuring, the magnets on the color measurement device side and the magnets on the backing plate side are not unexpectedly attracted, and the position alignment of the two is easily performed. Further, the magnets on the backing plate side can be electromagnets that receive power from the above-described wireless power supply system to become energized.

[0096] Fourth Embodiment

[0097] Next, the fourth embodiment of the color measurement system, the color measurement device, and the backing plate will be described with reference to Figure 7 Figure 7 The color measurement system 100D, the color measurement device 1D, and the backing plate 50D according to the fourth embodiment are shown in FIG. 18.

[0098] As with the backing plate 50C according to the above-described third embodiment, the backing plate 50D according to the present embodiment is provided with a plate-side first permanent magnet 62 and a plate-side second permanent magnet 63. As an example, the plate-side first permanent magnet 62 is provided such that the S-pole faces the color measurement device 1D, and as an example, the plate-side second permanent magnet 63 is provided such that the N-pole faces the color measurement device 1D.​​

[0099] In the color measurement device 1D, a first magnetic sensor 65 is provided at a position where the plate-side first permanent magnet 62 can be detected, facing the back plate 50D, and a second magnetic sensor 66 is provided at a position where the plate-side second permanent magnet 63 can be detected.

[0100] The color measurement system 100D is provided with the color measurement device 1D and the back plate 50D as described above.

[0101] The plate-side first permanent magnet 62, the plate-side second permanent magnet 63, the first magnetic sensor 65, and the second magnetic sensor 66 constitute a position alignment unit 59B for aligning the positions of the color measurement device 1D and the back plate 50D.

[0102] According to the above configuration, the plate-side first permanent magnet 62 is detected by the first magnetic sensor 65, and the plate-side second permanent magnet 63 is detected by the second magnetic sensor 66, so that the positions of the back plate 50D and the color measurement device 1D can be aligned, and color measurement can be performed properly.

[0103] Further, in the present embodiment, as described above, a pair of a plurality of permanent magnets and magnetic sensors is provided, and when all of the magnetic sensors (the first magnetic sensor 65 and the second magnetic sensor 66) detect the permanent magnets (the plate-side first permanent magnet 62 and the plate-side second permanent magnet 63) on the opposite side, the control section 9 (see Figure 2 ) of the color measurement device 1D causes the display section 8 to display this situation.

[0104] Thus, the user can easily grasp the alignment of the positions of the back plate 50D and the color measurement device 1D, and the usability is improved.

[0105] In addition, the display to the display section 8 can be, for example, a message display of "the positions have been aligned with the back plate" or the like. Further, instead of or in addition to the display to the display section 8, a beep sound can be emitted, for example.

[0106] Further, in the above embodiment, two pairs of permanent magnets and magnetic sensors are provided, but this is not limiting, and one pair or three or more pairs can also be provided.

[0107] Further, the plate-side first permanent magnet 62 and the plate-side second permanent magnet 63 can be oriented to the color measurement device 1D with either the S pole or the N pole. However, as long as the S pole of one of the plate-side first permanent magnet 62 and the plate-side second permanent magnet 63 is oriented to the color measurement device 1D and the N pole of the other is oriented to the color measurement device 1D, the orientation of the color measurement device 1D can be restricted by detecting the difference in polarity.

[0108] The present specification is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and of course they are included in the scope of the present application.

Claims

1. A backing plate, characterized in that, The backing plate is positioned beneath the object being measured by a colorimetric device. The backing plate has a light-emitting part that can emit light toward the colorimetric object. The alignment of the backing plate and the color measuring device is performed by a position alignment unit, which is used to align the backing plate and the color measuring device when the backing plate is placed under the color measuring object and the entire backing plate is covered by the color measuring object.

2. The backing plate according to claim 1, characterized in that, The backing plate has a receiving coil, which receives power through a supply coil provided in the color measuring device. The light-emitting part receives power from the receiving coil and emits light.

3. A backing plate, characterized in that, The backing plate is positioned beneath the object being measured by a colorimetric device. The backing plate has a magnet in the position facing the colorimetric device. The alignment of the backing plate and the color measuring device is performed by a position alignment unit, which is used to align the backing plate and the color measuring device when the backing plate is placed under the color measuring object and the entire backing plate is covered by the color measuring object.

4. The backing plate according to claim 3, characterized in that, The magnet has a polarity opposite to that of the magnet disposed on the color measuring device and facing the backing plate, and faces the color measuring device.

5. A colorimetric system, characterized in that, have: A colorimetric device for measuring the color of an object. A backing plate, disposed beneath the colorimetric object; and The position alignment unit is used to align the position of the backing plate and the color measuring device when the backing plate is positioned under the color measuring object and the entire backing plate is covered by the color measuring object.

6. The colorimetric system according to claim 5, characterized in that, The position alignment unit includes a light-emitting part disposed on the backing plate and capable of emitting light toward the colorimetric object.

7. The colorimetric system according to claim 6, characterized in that, The color measuring device is equipped with a power supply coil. The backing plate has a receiving coil, which receives power through the transmitting coil. The light-emitting part receives power from the receiving coil and emits light.

8. The colorimetric system according to claim 5, characterized in that, The position alignment unit includes: A device-side magnet is positioned in the colorimetric device facing the backing plate; and A side magnet is disposed in the backing plate facing the color measuring device. The device-side magnet and the plate-side magnet can be opposed to each other and are opposed with opposite polarities.

9. The colorimetric system according to claim 5, characterized in that, The position alignment unit includes: A magnet is disposed in the backing plate facing the colorimetric device; and A magnetic sensor is installed in the colorimetric device to detect the magnetism of the magnet.

10. The colorimetric system according to claim 9, characterized in that, The positioning alignment unit includes multiple pairs of magnets and magnetic sensors. The colorimetric device includes a display unit that displays information. When all the magnetic sensors detect the magnet on the opposite side, the control unit that controls the display unit causes the display unit to display content indicating that all the magnetic sensors have detected the magnet on the opposite side.

11. A colorimetric device, characterized in that, The colorimetric device measures the color of the object being measured. The colorimetric device has a power supply coil positioned facing a backing plate disposed below the colorimetric object. The power supply coil supplies power to a light-emitting portion of the backing plate via a power receiving coil; or... The color measuring device has a device-side magnet in a position facing a backing plate disposed below the color measuring object, and the polarity of the device-side magnet is opposite to that of the plate-side magnet of the backing plate facing the color measuring device and facing the backing plate. or, The colorimetric device has a magnetic sensor positioned facing a backing plate disposed beneath the object being measured. The magnetic sensor is positioned to detect magnets present on the backing plate. The alignment of the backing plate and the color measuring device is performed by a position alignment unit, which is used to align the backing plate and the color measuring device when the backing plate is placed under the color measuring object and the entire backing plate is covered by the color measuring object.

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