JP2017167055A - Inspection method for inspecting presence of coating of transparent coating agent in colored member, inspection apparatus of the same, and manufacturing method of colored member including the inspection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inspection method in which presence of coating of a transparent coating agent in a colored member is inspected, an inspection apparatus thereof, and a manufacturing method of a colored member including the inspection method.SOLUTION: An inspection method comprises: (1) a step of irradiating a colored member being an inspection target with light by a light irradiation device; (2) a step of imaging the inspection target irradiated with light by an imaging apparatus; (3) a step of acquiring color component data of RGB regarding the inspection target from an image acquired by the imaging apparatus; (4) a step of converting color component data of the inspection target into color space data expressed in luminance, saturation and hue; and (5) a step of determining presence of transparent coating agent in the inspection target based on at least one of chromaticity data without coating expressed in saturation and/or hue and chromaticity data with coating expressed in saturation and/or hue, and inspection chromaticity data of the inspection target expressed in saturation and/or hue.SELECTED DRAWING: Figure 8

Description

  The present invention relates to an inspection method for inspecting the presence or absence of application of a transparent coating agent on a colored member, an inspection apparatus thereof, and a method for manufacturing a colored member including the inspection method.

  For example, a puncture needle is attached to the tip of a syringe body called a syringe. From the viewpoint of keeping the puncture needle hygienic and preventing a needle stick accident, a cap that covers the puncture needle is attached to the tip of the syringe. A gasket is attached to the tip of the piston of the syringe in order to prevent the liquid in the syringe body from leaking out. When the gasket moves in conjunction with the movement of the piston, the drug solution or the like in the syringe body is pushed out through the puncture needle, or a biological substance or the like is extracted into the syringe body through the puncture needle. These caps for puncture needles and gaskets for pistons are mainly made of an opaque material, and silicon is applied to the surface in consideration of their slidability.

  The gasket as described above is manufactured, for example, as follows. First, a plurality of structures are formed on an opaque sheet by embossing one opaque sheet. Thereafter, silicon is applied to the surface of the opaque sheet on which the structure is formed, and separated into individual structures, whereby a cap, a gasket, and the like are manufactured.

  However, if a defect occurs in the process of applying silicon to the structure on the opaque sheet, the application of silicon may not be performed. Moreover, the silicon applied to the structure is transparent, and it is difficult to confirm the presence or absence of silicon by visual observation. Therefore, the opaque sheet on which the structure is formed may be sent to the next step without silicon being applied. As a result, there is a risk that caps, gaskets and the like to which silicon is not applied are manufactured.

  On the other hand, Patent Document 1 discloses an apparatus for inspecting the state of silicon applied to a transparent syringe body. In patent document 1, light is irradiated to a syringe main body through the slit board in which the bright part and the dark part were formed alternately, and the image of the light which permeate | transmitted the syringe main body is acquired. Then, when image processing is performed on the acquired image to form a multi-gradation grayscale image, transparent silicon can be raised by shading.

JP 2010-204051 A

  However, in Patent Document 1, the syringe main body to be inspected is only a transparent body, and it is inspected whether or not silicon is applied to the transparent body. Therefore, no method has been established for inspecting the presence or absence of silicon application when the inspection object is a colored member. Moreover, in the method of patent document 1, it is necessary to form the slit board which has a some fine slit according to a silicon particle diameter. Furthermore, in the method of Patent Document 1, it is necessary to arrange a slit plate between the illumination device and the imaging device, which not only increases the number of parts as an inspection device, but also requires adjustment of the arrangement position of the slit plate. It becomes.

  Then, an object of this invention is to provide the manufacturing method of the coloring member containing the inspection method which test | inspects the presence or absence of application | coating of the transparent coating agent in a coloring member, its inspection apparatus, and its inspection method.

The inspection method according to the first aspect of the present invention includes the following steps (1) to (5).
(1) A step of irradiating the colored member to be inspected with light by a light irradiation device.
(2) Step of photographing the inspection object irradiated with light by an imaging device.
(3) A step of acquiring RGB color component data for the inspection object from an image acquired by the imaging device.
(4) A step of converting the color component data to be inspected into color space data represented by luminance, saturation, and hue.

(5) Unapplied chromaticity data expressed by the saturation and / or hue of a colored member not coated with a transparent coating agent, and the saturation and / or hue of a colored member coated with a transparent coating agent Determining the presence / absence of a transparent coating agent in the inspection object based on at least one of the applied chromaticity data and the inspection chromaticity data of the inspection object expressed by saturation and / or hue .

  An inspection method according to a second aspect of the present invention is the inspection method according to the first aspect, wherein luminance is removed from the color space data, and the inspection chromaticity represented by saturation and / or hue for the inspection object. The method further includes obtaining data.

An inspection method according to a third aspect of the present invention is the inspection method according to the first or second aspect, wherein the color space data is luminance (L ^* ) using an L ^* c ^* h ^* color system. , Saturation (c ^* ) and hue angle (h ^* ). The non-application chromaticity data, the application chromaticity data, and the inspection chromaticity data are represented by saturation (c ^* ) and / or hue angle (h ^* ) based on the color space data. .

An inspection method according to a fourth aspect of the present invention is the inspection method according to the third aspect, wherein the non-application chromaticity data, the application chromaticity data, and the inspection chromaticity data are based on the color space data. Further, it is expressed by saturation (c ^* ).
The inspection method according to the fifth aspect of the present invention is the inspection method according to any one of the first to fourth aspects, and the light applied to the coloring member to be inspected is parallel light.
The inspection method according to a sixth aspect of the present invention is the inspection method according to any one of the first to fifth aspects, wherein the transparent coating agent is silicon.
An inspection method according to a seventh aspect of the present invention is the inspection method according to any one of the first to sixth aspects, wherein the colored member is an elastic body.
An inspection method according to an eighth aspect of the present invention is the inspection method according to any one of the first to seventh aspects, wherein the colored member is opaque.

  An inspection method according to a ninth aspect of the present invention is the inspection method according to any one of the first to eighth aspects, wherein in the step of determining the presence or absence of the transparent coating agent, the non-application chromaticity data and the The presence / absence of a transparent coating agent in the inspection object is determined by comparing a chromaticity data threshold value based on the chromaticity data with application and the inspection chromaticity data.

  An inspection apparatus according to a tenth aspect of the present invention includes a light irradiation apparatus, an imaging apparatus, and an inspection unit. The light irradiation device irradiates light to a colored member to be inspected. The imaging device photographs the inspection object irradiated with light. An inspection part inspects the presence or absence of the transparent coating agent in the coloring member which is the inspection object based on the image acquired by the imaging device. The inspection unit includes a color component data acquisition unit, a data conversion unit, and a determination unit. The color component data acquisition unit acquires RGB color component data for the inspection target from an image captured by the imaging device. The data conversion unit converts the color component data to be inspected into color space data represented by luminance, saturation, and hue. The determination unit includes the non-application chromaticity data represented by the saturation and / or hue of the colored member to which the transparent coating agent is not applied, and the saturation and / or hue of the colored member to which the transparent coating agent is applied. The presence / absence of a transparent coating agent in the inspection object is determined based on at least one of the applied chromaticity data expressed and the inspection chromaticity data of the inspection object expressed by saturation and / or hue.

  An inspection apparatus according to an eleventh aspect of the present invention is the inspection apparatus according to the tenth aspect, in which the inspection unit removes luminance from the color space data, and represents the inspection object with saturation and / or hue. And a luminance removing unit for obtaining the inspection chromaticity data.

An inspection apparatus according to a twelfth aspect of the present invention is the inspection apparatus according to the tenth or eleventh aspect, wherein the inspection unit is chromaticity data based on the non-application chromaticity data and the application chromaticity data. A threshold storage unit that stores the threshold for each type of coloring member is further included. The determination unit reads a chromaticity data threshold corresponding to the coloring member to be inspected from the threshold storage unit, and based on the read chromaticity data threshold and the inspection chromaticity data, the transparent coating agent in the inspection target Determine the presence or absence.
The manufacturing method according to the thirteenth aspect of the present invention includes the following steps (1) to (6).
(1) A step of forming a colored member.
(2) A step of irradiating the colored member to be inspected with light using a light irradiation device.
(3) Step of photographing the inspection object irradiated with light by an imaging device.
(4) A step of acquiring RGB color component data for the inspection object from an image acquired by the imaging device.
(5) A step of converting the color component data to be inspected into color space data represented by luminance, saturation, and hue.

(6) Unapplied chromaticity data expressed by the saturation and / or hue of a colored member not coated with a transparent coating agent, and the saturation and / or hue of a colored member coated with a transparent coating agent Determining the presence / absence of a transparent coating agent in the inspection object based on at least one of the applied chromaticity data and the inspection chromaticity data of the inspection object expressed by saturation and / or hue.

  A manufacturing method according to a fourteenth aspect of the present invention is the manufacturing method according to the thirteenth aspect, wherein in the step of determining the presence or absence of a transparent coating agent, the coloring corresponding to the inspection color data determined to have no transparent coating agent The method further includes the step of removing the member from the manufacturing process of the colored member.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the coloring member containing the inspection method which test | inspects the presence or absence of application | coating of the transparent coating agent in a coloring member, its inspection apparatus, and its inspection method can be provided.

FIG. 3 is a schematic diagram illustrating an example of a coloring member 10. The external view of the inspection apparatus 100 which test | inspects the presence or absence of application | coating of the transparent coating agent in the coloring member 10 which concerns on this embodiment. 1 is a block diagram of an inspection apparatus 100. FIG. The schematic diagram which expanded and showed 1 set of the coloring member 10, the light irradiation apparatus 31, and the imaging device 32 of FIG. The block diagram which shows the function structure of the test | inspection part 50a which test | inspects the presence or absence of application | coating of the transparent coating agent in the coloring member. The schematic diagram which shows the relationship between L ^* a ^* b ^* color system and L ^* c ^* h ^* color system in a certain brightness | luminance. An example of the chromaticity data threshold value stored in the threshold value storage unit 55. An example of the flowchart which shows the inspection method of the presence or absence of the transparent coating agent in the coloring member. An example of the flowchart which shows the manufacturing method of the coloring member 10. FIG. The schematic diagram for every manufacturing process of the colored member 10. FIG. The schematic diagram for every manufacturing process of the colored member 10. FIG. The schematic diagram for every manufacturing process of the colored member 10. FIG. The result of measuring the saturation (c ^* ) for each of the 10 members that were not cleaned without applying silicon to the colored member 10 and the 10 members that were not cleaned after applying silicon to the colored member 10. The result of measuring the saturation (c ^* ) for each of the 10 washed without applying silicon to the colored member 10 and the 10 washed with silicon applied to the colored member 10.

  Hereinafter, an inspection method and an inspection apparatus for inspecting the presence / absence of application of a transparent coating agent in a colored member according to an embodiment of the present invention will be described with reference to the drawings. Moreover, the manufacturing method of the coloring member using the same inspection method is also demonstrated.

  A transparent coating agent is applied to the surface of the colored member of the present embodiment in order to ensure slidability. In the present embodiment, the inspection device inspects whether or not the transparent coating agent is applied to the coloring member to be inspected. Below, the coloring member which is a test object in this embodiment and the transparent coating agent apply | coated to a coloring member are demonstrated first.

<1. Colored member and transparent coating member>
FIG. 1 is a schematic diagram illustrating an example of a coloring member. The coloring member is a member used as, for example, a cap 10a and a gasket 10b of a syringe 15. The cap 10 a covers the injection needle 14 provided at the tip of the syringe 15. On the other hand, the gasket 10 b is provided at the tip of the plunger 13, is inserted into the syringe 12 together with the plunger 13, and pushes out the chemical solution and the like in the syringe 12. In the following description, 10 is used as a generic symbol for colored members.

  Although the shape is not limited, the colored member 10 of the present embodiment is a member colored in a desired color such as black, green, and gray, and is an opaque member that has low light transmittance or does not transmit light. In addition, the coloring member 10 includes not only a structure in which the entire coloring member 10 is an opaque member, but also a structure in which a part of the coloring member 10 transmits light and the remaining portion is an opaque member. May be included.

  The coloring member 10 is formed from resin, for example. Further, the coloring member 10 may be an elastic body. When the coloring member 10 is an elastic body, it is advantageous in terms of ensuring airtightness. Examples of the material for the colored member 10 include, but are not limited to, thermoplastic resins such as polyethylene, polypropylene, polyvinyl chloride, and fluororesin, and other natural rubber, isoprene rubber, butyl rubber, styrene butadiene rubber, and the like. Can be mentioned. In addition, it is preferable that the coloring member 10 should select the material which does not react with the chemical | medical solution etc. which contact it.

Next, the transparent coating agent will be described. The transparent coating agent is a transparent coating agent with high permeability that is applied to the surface of the colored member 10. High permeability means that it is difficult to visually confirm that the transparent coating agent is applied even when the transparent coating agent is applied to the colored member 10, for example. The transparent coating agent is, for example, a material that is applied so that the coloring member 10 is slidable with respect to a member that contacts the coloring member 10. Examples of such a transparent coating agent include, but are not limited to, silicon and the like. The transparent coating agent may be, for example, a material for ensuring the antibacterial properties of the colored member 10 or a material for protecting the surface of the colored member 10.
<2. Inspection device>

Next, the inspection apparatus 100 for inspecting whether or not the transparent coating agent is applied to the coloring member 10 to be inspected will be described. First, the external configuration of the inspection apparatus 100 will be described.
(1) External configuration of the inspection apparatus 100

  FIG. 2 is an external view of an inspection apparatus 100 that inspects whether or not the transparent coating agent is applied to the colored member 10 according to the present embodiment. FIG. 3 is a block diagram of the inspection apparatus 100. Note that the X direction in FIG. 2 indicates the left-right direction of the paper surface, the Y direction indicates a direction extending toward the front and back of the paper surface, and the Z direction indicates the vertical direction of the paper surface.

  The inspection device 100 includes a control device 20, various inspection devices 30 (various inspection devices 30a, 30b...), A robot arm 33 (see FIG. 3), and a conveyance device 34 (conveyance devices 34a, 34b). The various inspection devices 30 include, for example, a light irradiation device 31 (light irradiation devices 31a, 31b...), An imaging device 32 (imaging devices 32a, 32b...), And the like.

  The control device 20 controls the various inspection devices 30, the robot arm 33, and the transfer device 34 to perform various inspections on the colored member 10. The functional configuration of the control device 20 will be described later.

  As illustrated in FIG. 2, the inspection apparatus 100 according to the present embodiment includes a first transport device 34 a and a second transport device 34 b that are adjacent to each other as the transport device 34. First, the first transfer device 34a will be described. The first transport device 34a is provided with a first support member 16a having a circular shape in front view that rotates in the A direction on the XZ plane. And the mounting part 17a in which the coloring member 10 mentioned above is arrange | positioned at predetermined intervals is provided in the outer peripheral surface of the 1st supporting member 16a. In the robot arm 33 described above, for example, the coloring member 10 is sequentially placed on the placement portion 17a at the tip of the rotation in the A direction in response to the rotation of the first support member in the A direction. ing. In addition, a plurality of various inspection devices 30 are arranged on the outer side in the radial direction of the first support member 16a so as to face each placement portion 17a. The various inspection devices 30 have a light irradiation device 31 and an imaging device 32, and the light irradiation device 31 and the imaging device 32 are arranged in this order and outward in the radial direction. Hereinafter, the position where the various inspection devices 30 are arranged is referred to as an inspection position. Then, while the first support member 16a rotates in the A direction, each placement portion 17a stops at the inspection position, and the inspection is performed. That is, each light irradiation device 31 irradiates the colored member 10 with light, and this is imaged by the imaging device 32.

  Further, each of the various inspection devices 30 performs different inspections. That is, the various inspection devices 30 take images for inspecting the presence or absence of the transparent coating agent in the colored member 10 according to the embodiment of the present invention. In the other various inspection devices 30, an image for inspecting the colored member 10 for the presence or absence of white spots or black spots is taken. Therefore, when the coloring member 10 is conveyed by the first conveying device 34a, various images can be acquired on one surface such as the upper surface of the coloring member 10, and various inspections can be performed.

  The second transport device 34b is configured similarly. That is, a second support member 16b having a circular shape in front view that rotates in the B direction on the XY plane is provided, and the second support member 16b rotates to synchronize with the first support member 16a. A plurality of placement portions 17b are provided on the outer peripheral surface of the second support member 16b in the same manner as the first transport device 34a, and light is applied to a plurality of inspection positions so as to correspond to the placement portions 17b. Various inspection devices 30 having an irradiation device 31 and an imaging device 32 are arranged. As described above, the colored member 10 that has been inspected by the first transport device 34a is replaced by the robot arm 33 with the placement portion 17b of the second transport device 34b. At this time, the robot arm 33 changes the mounting surface of the coloring member 10 so that a surface different from the surface inspected by the first transport device 34a can be inspected. Then, similarly to the first transport device 34a, light is irradiated on one surface such as the side surface of the coloring member 10 at each inspection position, and an image is taken.

  Next, various inspection devices 30 will be described with reference to FIGS. As shown in FIGS. 2 and 3, various inspection devices 30 (various inspection devices 30 a, 30 b...) Are connected to the respective control units 22 (control units 22 a, 22 b...) In the control device 20. Controlled. In FIG. 2, only the light irradiation device 31 a and the imaging device 32 a are connected to the control device 20 for simplification, but other various inspection devices 30 are also connected to the control device 20.

  FIG. 4 is an enlarged schematic view showing one set of the coloring member 10, the light irradiation device 31, and the imaging device 32 in FIG. As shown in FIG. 4, the light irradiation device 31 irradiates the coloring member 10 with light, and has a ring-shaped main body 35 having a through hole 36. And from this main-body part 35, a diffused light is irradiated toward the coloring member 10. FIG.

The imaging device 32 photographs the coloring member 10 irradiated with light by the light irradiation device 31, and photographs the coloring member 10 through the through hole 36 of the main body portion 35 of the light irradiation device 31. The imaging device 32 is a camera that can acquire a color image of the coloring member 10 and acquires a color image based on R (red), G (green), and B (blue). However, the color components of the color image are not limited to RGB, and may include color components such as magenta and cyan in addition to RGB.
(2) Functional configuration of the control device 20

Next, the functional configuration of the control device 20 included in the inspection apparatus 100 will be described.
As illustrated in FIG. 3, the control device 20 includes, for example, a control management unit 21 and a control unit 22 (control units 22a, 22b...). The control unit 22 includes a plurality of control units 22a, 22b... For performing different inspections, and each control unit 22 includes the above-described various inspection devices 30 (various inspection devices 30a, 30b...). It is provided to control each. In the present embodiment, the control unit 22a that inspects the presence or absence of application of the transparent coating agent on the coloring member 10 in the control unit 22 is referred to as a first control unit 22a.
The control management unit 21 comprehensively controls the plurality of control units 22 and controls the entire inspection apparatus 100.
(2-1) First control unit 22a

Below, the 1st control part 22a for test | inspecting the presence or absence of application | coating of the transparent coating agent in the coloring member 10 which concerns on this embodiment is demonstrated. The first control unit 22a includes an inspection unit 50a and a device control unit 51a. The inspection unit 50a and the device control unit 51a will be described below.
(2-1-1) Device control unit 51a

The device control unit 51a controls various inspection devices 30a including the light irradiation device 31a and the imaging device 32a in order to inspect whether or not the transparent coating agent is applied to the coloring member 10. The light irradiation device 31a irradiates the coloring member 10 with light, and the imaging device 32a captures the coloring member 10 irradiated with the light and acquires a color image based on RGB.
(2-1-2) Inspection unit 50a

  The inspection unit 50a performs various processes for inspecting whether or not the transparent coating agent is applied to the coloring member 10 based on the image acquired by the imaging device 32a. FIG. 5 is a block diagram illustrating a functional configuration of the inspection unit 50 a that inspects whether or not the transparent coating agent is applied to the coloring member 10.

The inspection unit 50 a includes a color component data acquisition unit 51, a data conversion unit 52, a luminance removal unit 53, a determination unit 54, and a threshold storage unit 55. Each of these functional units of the inspection unit 50a will be described below.
(I) Color component data acquisition unit 51

  The color component data acquisition unit 51 acquires RGB color component data for the coloring member 10 to be inspected from a color image based on RGB. Specifically, for example, the color component data acquisition unit 51 acquires R component, G component, and B component color component data from a color image.

  The area | region corresponding to the coloring member 10 among color images is comprised by the some pixel. Accordingly, the color component data acquisition unit 51 acquires, for example, the R component of each pixel constituting the region corresponding to the coloring member 10. The color component data acquisition unit 51 averages R components of a plurality of pixels constituting the region, and acquires R component color component data for the coloring member 10. The acquisition method is the same for the other color components. Note that the method of acquiring color component data is not limited to this. For example, the color component data may be acquired by selecting a plurality of pixels at random from among the pixels constituting the region corresponding to the coloring member 10 and acquiring the color components and averaging them.

(Ii) Data converter 52
The data conversion unit 52 converts RGB color component data into color space data represented by luminance, saturation, and hue.

For example, the data conversion unit 52 converts R component color component data into color space data based on the L ^* a ^* b ^* color system. That is, the data conversion unit 52 converts the R component color component data into color space data using luminance (L ^* ), saturation, and hue (a ^* and b ^* ). Further, the data conversion unit 52 converts the color space data represented by the luminance (L ^* ), the saturation and the hue (a ^* and b ^* ) into luminance (based on the L ^* c ^* h ^* color system). L ^* ), saturation (c ^* ), and hue angle (h ^* ).

Here, the relationship between the color space using the L ^* a ^* b ^* color system and the color space using the L ^* c ^* h ^* color system will be described. FIG. 6 is a schematic diagram showing the relationship between the L ^* a ^* b ^* color system and the L ^* c ^* h ^* color system at a certain luminance. For example, R component color component data in RGB image data is represented by a coordinate position of a point C when expressed in the L ^* a ^* b ^* color system at a certain predetermined luminance (L ^* ). In the L ^* a ^* b ^* color system, saturation and hue (a ^* and b ^* ) are represented by a ^{* on} the horizontal axis and b ^{* on the} vertical axis. Here, the distance of the line segment OC from the origin O to the point C represents the saturation (c ^* ), and the angle θ between the horizontal axis a ^* and the line segment OC represents the hue angle (h ^* ). Therefore, by converting from the L ^* a ^* b ^* color system to the L ^* c ^* h ^* color system, the saturation and hue (a ^* and b ^* ) are changed to the saturation (c ^* ) and hue angle ( h ^* ).

  A known conversion method may be used for the above conversion. Similarly, other G component color component data and B component color component data are also converted into color space data.

(Iii) Luminance removal unit 53
The luminance removing unit 53 removes luminance from the color space data represented by luminance, saturation, and hue, and acquires chromaticity data represented by saturation and hue.

For example, the luminance removing unit 53 removes the luminance (L ^*) from the luminance (L ^*) and chroma and hue (a ^* and b ^*) and de represented color space data, saturation and hue (a ^The chromaticity data represented by ^* and b ^* ) may be acquired. In this case, first, the data conversion unit 52 converts the color component data into color space data using luminance (L ^* ), saturation, and hue (a ^* and b ^* ). Next, the luminance removing unit 53 removes luminance (L ^* ) from the above-described color space data, and acquires chromaticity data represented by saturation and hue (a ^* and b ^* ). Thereafter, the data conversion unit 52 converts the chromaticity data represented by saturation and hue (a ^* and b ^* ) into chromaticity data represented by saturation (c ^* ) and hue angle (h ^* ). To do.

Alternatively, the luminance removing unit 53, the luminance (L ^*), chroma (c ^*) and hue angle (h ^*) represented the by removing the luminance (L ^*) from the color space data, the chroma (c ^* ) And hue angle (h ^* ) may be acquired. In this case, first, the data conversion unit 52 converts the color component data into color space data using luminance (L ^* ), saturation, and hue (a ^* and b ^* ). Next, the data converter 52 converts the color space data using the luminance (L ^* ), the saturation and the hue (a ^* and b ^* ) into the luminance (L ^* ), the saturation (c ^* ) and the hue angle. Conversion into color space data represented by (h ^* ). Thereafter, the luminance removing unit 53, the luminance (L ^*), chroma (c ^*) and hue angle (h ^*) from the color space data represented by luminance (L ^*) is removed and chroma (c ^* ) And chromaticity data represented by hue angle (h ^* ).
(Iv) Threshold storage unit 55

  The threshold storage unit 55 stores a chromaticity data threshold. The chromaticity data threshold value is a reference value for determining whether or not a transparent coating agent is applied to the coloring member 10 to be inspected. FIG. 7 is an example of the chromaticity data threshold value stored in the threshold value storage unit 55.

The chromaticity data threshold is defined based on the non-application chromaticity data and the application chromaticity data. More specifically, the chromaticity data threshold value is defined as a predetermined reference value so that the non-application chromaticity data and the application chromaticity data can be separated. The non-application chromaticity data is chromaticity data based on the saturation (c ^* ) of the colored member 10 to which the transparent coating agent is not applied. The chromaticity data with application is chromaticity data based on the saturation (c ^* ) of the colored member 10 to which the transparent coating agent is applied. The non-application chromaticity data and the application chromaticity data are chromaticity data acquired in advance for a predetermined coloring member 10 separately from the coloring member 10 to be inspected.

The chromaticity data threshold value may differ depending on the material, size, shape, and the like of the coloring member 10. Therefore, the threshold value storage unit 55 in FIG. 7 stores a chromaticity data threshold value according to the type of the coloring member 10. 7 stores a chromaticity data threshold value based on, for example, saturation (c ^* ) as the chromaticity data threshold value. In addition, the threshold storage unit 55 may store a chromaticity data threshold based on the hue angle (h ^* ) as the chromaticity data threshold.
(V) Determination unit 54

The determination unit 54 selects chromaticity data represented by saturation (c ^* ) among chromaticity data represented by saturation (c ^* ) and hue angle (h ^* ) for the coloring member 10 to be inspected. The inspection chromaticity data is used.

Further, the determination unit 54 reads the chromaticity data threshold value corresponding to the type of the coloring member 10 to be inspected from the threshold value storage unit 55. Here, the chromaticity data threshold value is represented by saturation (c ^* ) corresponding to the inspection chromaticity data. The determination unit 54 determines the presence or absence of the transparent coating agent based on the read chromaticity data threshold value and the inspection chromaticity data. For example, the determination unit 54 compares the inspection chromaticity data with respect to whether the inspection chromaticity data is larger or smaller than the chromaticity data threshold, and determines the presence or absence of the transparent coating agent.

As shown in FIG. 11 and FIG. 12 in Examples described later, the saturation (c ^* ) of the colored member 10 coated with silicon as the transparent coating agent is the saturation (c ^* ) of the colored member 10 not coated ^. Smaller than). Therefore, for example, when the inspection chromaticity data is smaller than the chromaticity data threshold, the determination unit 54 determines that the transparent coating agent is applied to the coloring member 10 to be inspected. On the other hand, for example, when the inspection chromaticity data is larger than the chromaticity data threshold, the determination unit 54 determines that the transparent coating agent is not applied to the coloring member 10 to be inspected.

<3. Inspection method>
Next, an inspection method for the presence or absence of a transparent coating agent in the colored member 10 among a plurality of inspections performed using the above-described inspection apparatus 100 will be described with reference to FIG. FIG. 8 is an example of a flowchart illustrating a method for inspecting the presence or absence of the transparent coating agent in the colored member 10.

  Inspection process S24 (S24a-S24f) shown in FIG. 8 is implemented as one process of the manufacturing process of the coloring member 10 shown in below-mentioned FIG.

  First, the light irradiation device 31a irradiates the colored member 10 to be inspected with light (step S24a), and the imaging device 32a captures the colored member 10 irradiated with the light and acquires a color image based on RGB. (Step S24b).

Next, the color component data acquisition unit 51 acquires color component data for each of RGB from the color image based on RGB (step S24c). Subsequently, the data conversion unit 52 uses luminance (L ^* ), saturation, and hue (a ^* and b ^* ) based on the L ^* a ^* b ^* color system for each of the RGB color component data. Conversion into color space data (step S24d). At this stage, the luminance removal unit 53 may remove the luminance (L ^* ) and generate chromaticity data using saturation and hue (a ^* and b ^* ).

Subsequently, the data conversion unit 52 converts color space data using luminance (L ^* ), saturation, and hue (a ^* and b ^* ) based on the L ^* c ^* h ^* color system. Conversion into color space data represented by luminance (L ^* ), saturation (c ^* ), and hue angle (h ^* ) is performed (step S24e). Use at this stage, if the color space data includes luminance (L ^*) is the luminance removal unit 53, the luminance (L ^*) is removed, the chroma (c ^*) and hue angle (h ^*) Chromaticity data may be generated.

Then, the determination unit 54 determines the presence or absence of the transparent coating agent in the coloring member 10 based on the chromaticity data threshold value and the inspection chromaticity data (step S24f). More specifically, the determination unit 54 uses the chromaticity data represented by the saturation (c ^* ) for the coloring member 10 to be inspected as inspection chromaticity data. In addition, the determination unit 54 reads the chromaticity data threshold value represented by the saturation (c ^* ) from the threshold value storage unit 55 based on the type of the coloring member 10 to be inspected. Finally, the determination unit 54 determines the presence or absence of the transparent coating agent by comparing the chromaticity data threshold value with the inspection chromaticity data. That is, when the comparison target is saturation (c ^* ), the determination unit 54 applies the transparent coating agent to the coloring member 10 to be inspected when the inspection chromaticity data is smaller than the chromaticity data threshold. Is determined to be applied. On the other hand, when the inspection chromaticity data is larger than the chromaticity data threshold, the determination unit 54 determines that the transparent coating agent is not applied to the coloring member 10 to be inspected.
Thus, the inspection process for determining whether or not the transparent coating agent is applied to the colored member 10 is completed.
<4. Manufacturing method of colored member>

Hereinafter, the manufacturing method of the colored member 10 including the above-described inspection method will be described with reference to FIGS. 9 and 10A to 10C. However, the above-described inspection method is not limited to the example here, and can be used for any application that requires the inspection of the transparent coating agent on the colored member 10.
FIG. 9 is an example of a flowchart showing a method for manufacturing the colored member 10. 10A to 10C are schematic diagrams for each manufacturing process of the colored member 10.

  First, as shown in FIG. 10A, a colored sheet 60 of a predetermined material, size, thickness, etc. is prepared according to the colored member 10 to be manufactured. For example, a predetermined colored sheet 60 is manufactured using a predetermined material by a manufacturing apparatus (not shown) (step S21).

  Next, the manufacturing apparatus presses the colored sheet 60 using a mold corresponding to the shape of the colored member 10 (step S22). Thereby, as shown in FIG. 10B, the outer shapes of the plurality of colored members 10 are formed on the colored sheet 61.

  Subsequently, a transparent coating agent is applied to the colored sheet 61 (step S23). The application of the transparent coating agent may be performed automatically by a manufacturing apparatus or manually. Subsequently, as described above, an inspection process for inspecting whether or not the transparent coating agent is applied to the colored member 10 is performed (step S24).

  And the process according to the test result in a test process is performed (step S25). For example, in the inspection process, when it is determined that the transparent coating agent is not applied to the colored member 10, the colored member 10 is removed from the manufacturing process using the robot arm 33 or the like. Or in order to apply | coat a transparent coating agent, you may return the colored sheet 61 to the process of step S23.

  On the other hand, when it is determined in the inspection process that the transparent coating agent is applied to the colored member 10, the colored sheet 61 is moved to the next process using the robot arm 33 or the like. In the next step, for example, as shown in FIG. 10C, the individual colored members 10 are separated from the colored sheet 61.

<5. Features>
Next, the characteristic at the time of implementing the inspection method of the presence or absence of the transparent coating agent in the coloring member 10 which concerns on this embodiment is demonstrated.
Since the transparent coating agent applied to the coloring member 10 is transparent, it is difficult to determine the presence or absence of the transparent coating agent simply by acquiring an RGB image of the coloring member 10 to be inspected. However, in the inspection method, inspection chromaticity data based on the saturation (c ^* ) is used for the coloring member 10 to be inspected in order to determine the presence or absence of the transparent coating agent. When such inspection chromaticity data is used, a difference in color can be easily detected depending on the presence or absence of a transparent coating agent. Therefore, the presence / absence of the transparent coating agent in the inspection target can be easily determined, and the accuracy of the determination of the presence / absence of the transparent coating agent in the inspection target can be improved.

  In particular, even if the object to be inspected is the colored member 10, the presence or absence of the transparent coating agent can be determined by such an easy method. Moreover, even if it is a case where the coloring member 10 is manufactured with the opaque material which does not permeate | transmit light, if the said inspection method is used, the presence or absence of a transparent coating agent can be determined.

  The inspection chromaticity data is obtained by converting RGB color component data obtained by photographing the coloring member 10 using an existing conversion method or the like. Thus, since raw data obtained by simply converting RGB color component data is used as inspection chromaticity data, data for determining the presence or absence of a transparent coating agent can be obtained by a simple and inexpensive method. Therefore, according to the present embodiment, a simpler and less expensive inspection method can be provided.

Further, in the above configuration, the inspection chromaticity data of the coloring member 10 to be inspected is data based on the saturation (c ^* ) and does not include data based on the luminance (L ^* ). Therefore, it is possible to suppress variations in inspection chromaticity data due to variations in luminance (L ^* ). This also improves the accuracy of determining the presence or absence of the transparent coating agent in the inspection target. Note that the luminance variation is caused by, for example, inspection conditions such as the size of the inspection target, the type and intensity of light irradiated on the inspection target, and the mounting height of the inspection target.

Further, the data conversion unit 52 converts the RGB color component data into luminance (L ^* ), saturation (c ^* ), and hue angle (h ^* ) data using the L ^* c ^* h ^* color system. Divide into Then, chromaticity data such as chromaticity data with coating, chromaticity data without coating, and inspection chromaticity data can be expressed by selectively using saturation (c ^* ) from these data. That is, it is possible to selectively extract only the saturation (c ^* ) representing the color difference when the transparent coating agent is applied from the RGB color component data. Therefore, the presence / absence of the transparent coating agent can be accurately determined by comparing the chromaticity data threshold value expressed by the saturation (c ^* ) with the inspection chromaticity data.

Here, as described in FIG. 11 and FIG. 12 of the examples described later, the saturation (c ^* ) of the colored member 10 to which silicon as a transparent coating agent is applied is the saturation of the colored member 10 that is not applied. Smaller than (c ^* ). Furthermore, each chroma (c ^* ) is clearly different depending on the presence or absence of silicon. Therefore, the presence or absence of the transparent coating agent can be determined using the saturation (c ^* ). Similarly, the hue angle (h ^* ) of the colored member 10 coated with silicon as the transparent coating agent is smaller than the hue angle (h ^* ) of the colored member 10 not coated. Therefore, the presence / absence of the transparent coating agent can be determined using the hue angle (h ^* ).

In the inspection method, a chromaticity data threshold corresponding to the type and the like of the coloring member 10 is used. Therefore, by taking into consideration the difference in the chromaticity data threshold value due to the difference in the type of the colored member 10, the accuracy of the determination regarding the presence or absence of the transparent coating agent can be improved. Further, by providing the chromaticity data threshold value in advance, it is possible to determine the presence or absence of the transparent coating agent in the inspection target more quickly and easily by simply reading the predetermined chromaticity data threshold value.
<6. Modification>

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning. For example, the following changes can be made. Moreover, the gist of the following modifications can be combined as appropriate.

<6-1>
In the above embodiment, an example is shown in which the saturation (c ^* ) is used as the inspection chromaticity data and the chromaticity data threshold. However, as the inspection chromaticity data and the chromaticity data threshold, the hue angle (h ^* ) may be used, or both the saturation (c ^* ) and the hue angle (h ^* ) may be used.

(1) Hue angle (h ^* )
The case where the hue angle (h ^* ) is used as the inspection chromaticity data and the chromaticity data threshold will be described. Since the conversion from the RGB color component data to the L ^* a ^* b ^* color system and the L ^* c ^* h ^* color system is the same as in the above embodiment, description thereof is omitted.

The determination unit 54 uses the chromaticity data represented by the hue angle (h ^* ) for the coloring member 10 to be inspected as inspection chromaticity data. The determination unit 54 reads the chromaticity data threshold value for the hue angle (h ^* ) from the threshold value storage unit 55 based on the type of the coloring member 10 to be inspected. Determination unit 54 compares the inspection chromaticity data represented by hue angle (h ^*), and a chromaticity data threshold represented by hue angle (h ^*), and determines whether the transparent coating material.

The hue angle (h ^* ) is converted from the saturation and the hue (a ^* and b ^* ), and represents the color as well as the saturation (c ^* ). Thus, by comparing the test chromaticity data represented by hue angle (h ^*), and a chromaticity data threshold represented by hue angle (h ^*), it may determine the presence or absence of a transparent coating agent. For example, as with the saturation (c ^* ), the hue angle (h ^* ) of the colored member 10 to which the transparent coating agent is applied is substantially larger than the hue angle (h ^* ) of the colored member 10 that is not applied. small. Therefore, for example, when the inspection chromaticity data is smaller than the chromaticity data threshold, the determination unit 54 determines that the transparent coating agent is applied to the coloring member 10 to be inspected. On the other hand, for example, when the inspection chromaticity data is larger than the chromaticity data threshold, the determination unit 54 determines that the transparent coating agent is not applied to the coloring member 10 to be inspected.

(2) Saturation (c ^* ) and hue angle (h ^* )
A case where the saturation (c ^* ) and the hue angle (h ^* ) are used as the inspection chromaticity data will be described.

The determination unit 54 uses the chromaticity data represented by the saturation (c ^* ) and the hue angle (h ^* ) for the coloring member 10 to be inspected as inspection chromaticity data. The determination unit 54 reads out the chromaticity data threshold values for the saturation (c ^* ) and the hue angle (h ^* ) from the threshold storage unit 55 based on the type of the coloring member 10 to be inspected. Determination unit 54 compares the test chromaticity data represented by the chroma (c ^*), and a chromaticity data threshold represented by the chroma (c ^*). Furthermore, the determination unit 54 compares the inspection chromaticity data represented by hue angle (h ^*), and a chromaticity data threshold represented by hue angle (h ^*), and determines whether the transparent coating agent .

Thereby, even if it is a case where the presence or absence of a transparent coating agent cannot be determined by comparing one chromaticity data, the presence or absence of a transparent coating agent can be determined by comparing the other chromaticity data. Therefore, it is possible to compensate the accuracy of the determination of the presence or absence of the transparent coating agent. For example, by comparing the test chromaticity data represented by hue angle (h ^*), and a chromaticity data threshold represented by hue angle (h ^*), and it can not determine the existence of the transparent coating agent. Even in such a case, by comparing the test chromaticity data represented by the chroma (c ^*), and a chromaticity data threshold represented by the chroma (c ^*), a transparent coating agent Can determine whether or not. The same applies when the hue angle (h ^* ) and saturation (c ^* ) are opposite to the above.

Moreover, the accuracy of judgment can be made more accurate by comparing both. For example, it can be determined with test chromaticity data represented by the chroma (c ^*), by comparing the chromaticity data a threshold represented by the chroma (c ^*), and a transparent coating agent is applied Suppose. Similarly, determine the test chromaticity data represented by hue angle (h ^*), by comparing the chromaticity data a threshold represented by hue angle (h ^*), and a transparent coating agent is applied Suppose it was made. When both results are the results that the transparent coating agent is applied and are the same, the accuracy of the determination of the presence or absence of the transparent coating agent can be increased. The accuracy can be similarly improved for the determination result that the transparent coating agent is not applied.

<6-2>
In the above embodiment, the threshold storage unit 55 stores a chromaticity data threshold for each type of the coloring member 10. However, the threshold storage unit 55 does not necessarily need to store a chromaticity data threshold for each type of the coloring member 10. The threshold storage unit 55 may store, for example, a chromaticity data threshold for each similar material, for each similar size, or for each similar shape. Alternatively, the threshold storage unit 55 may store a chromaticity data threshold regardless of the type of the coloring member 10.

<6-3>
In the above embodiment, the chromaticity data threshold value is defined as a predetermined reference value for separating the non-application chromaticity data and the application chromaticity data. However, the chromaticity data threshold is not limited to this as long as it can determine the presence or absence of the transparent coating agent in the coloring member 10.

  For example, in order to improve the accuracy of the determination of the presence or absence of a transparent coating agent, the chromaticity data threshold is data that is close to chromaticity data with application or data that is close to chromaticity data without application It may be. In the former case, when the chromaticity data of the coloring member 10 to be inspected is close to the chromaticity data threshold value, it can be determined that the transparent coating agent is applied to the coloring member 10. On the contrary, when the chromaticity data of the coloring member 10 to be inspected is separated from the chromaticity data threshold value, it can be determined that the transparent coating agent is not applied to the coloring member 10. In the latter case, when the chromaticity data of the coloring member 10 to be inspected is close to the chromaticity data threshold value, it can be determined that the transparent coating agent is not applied to the coloring member 10. On the contrary, when the chromaticity data of the coloring member 10 to be inspected is separated from the chromaticity data threshold value, it can be determined that the transparent coating agent is applied to the coloring member 10.

<6-4>
In the above embodiment, RGB color component data is converted to color space data based on the L ^* a ^* b ^* color system, and further converted to color space data based on the L ^* c ^* h ^* color system. Thus, the inspection chromaticity data is acquired for the coloring member 10 to be inspected. However, color space data based on the L ^* a ^* b ^* color system may be used as the inspection chromaticity data.

In this case, the data converter 52 converts the RGB color component data into color space data based on the L ^* a ^* b ^* color system. Thereby, the RGB color component data is converted into color space data using luminance (L ^* ), saturation and hue (a ^* and b ^* ). The luminance removing unit 53 removes luminance (L ^* ) from the color space data, and acquires chromaticity data represented by saturation and hue (a ^* and b ^* ).

The threshold storage unit 55 stores a chromaticity data threshold based on saturation and hue (a ^* and b ^* ). The chromaticity data threshold is a threshold based on the non-application chromaticity data and the application chromaticity data. For example, the chromaticity data threshold is a reference value that serves as a reference for separating the non-application chromaticity data and the application chromaticity data. The non-application chromaticity data is chromaticity data based on the saturation and hue (a ^* and b ^* ) of the coloring member 10 to which the transparent coating agent is not applied. The chromaticity data with application is chromaticity data based on the saturation and hue (a ^* and b ^* ) of the colored member 10 to which the transparent coating agent is applied.

The determination unit 54 uses the chromaticity data represented by the saturation and hue (a ^* and b ^* ) for the coloring member 10 to be inspected as inspection chromaticity data. In addition, the determination unit 54 reads out the chromaticity data threshold corresponding to the type of the coloring member 10 to be inspected from the threshold storage unit 55 described above. The determination unit 54 determines the presence or absence of the transparent coating agent based on the read chromaticity data threshold value and the inspection chromaticity data. For example, the determination unit 54 can determine the presence or absence of a transparent coating agent based on the magnitude relationship between the chromaticity data threshold value and the inspection chromaticity data.

<6-5>
In the above embodiment, the determination unit 54 determines the presence or absence of the transparent coating agent using the chromaticity data threshold value of the threshold value storage unit 55. However, the determination unit 54 does not necessarily need to use the chromaticity data threshold in determining whether or not there is a transparent coating agent. For example, the determination unit 54 may determine the presence or absence of a transparent coating agent based on the chromaticity data with application and the inspection chromaticity data. For example, the determination unit 54 may determine the presence or absence of a transparent coating agent based on the non-application chromaticity data and the inspection chromaticity data.

The chromaticity data with application is represented by the saturation (c ^* ) and / or hue angle (h ^* ) of the colored member 10 to which the transparent coating agent is applied. Further, the chromaticity data without application is represented by the saturation (c ^* ) and / or hue angle (h ^* ) of the colored member 10 to which the transparent coating agent is not applied.

Therefore, for example, when the inspection chromaticity data represented by the saturation (c ^* ) and / or the hue angle (h ^* ) is approximate to the applied chromaticity data, the determination unit 54 determines the coloring member. 10 is judged that the transparent coating agent is applied. Conversely, when the inspection chromaticity data is separated from the applied chromaticity data, the determination unit 54 determines that the transparent coating agent is not applied to the coloring member 10. It is assumed that the approximate range or the separation range is determined in advance, for example.

In addition, for example, the determination unit 54 determines the coloring member when the inspection chromaticity data represented by the saturation (c ^* ) and / or the hue angle (h ^* ) approximates the non-application chromaticity data. 10 is judged that the transparent coating agent is not applied. Conversely, when the inspection chromaticity data is separated from the non-application chromaticity data, the determination unit 54 determines that the transparent coating agent is applied to the coloring member 10. It is assumed that the approximate range or the separation range is determined in advance, for example.

In the above, saturation (c ^* ) and / or hue angle (h ^* ) are used as chromaticity data, but saturation and hue (a ^* and b ^* ) may be used instead. For example, regarding the saturation and hue (a ^* and b ^* ), the determination unit 54 compares the applied chromaticity data and the inspection chromaticity data to determine the presence / absence of application. Alternatively, the determination unit 54 compares the non-application chromaticity data and the inspection chromaticity data with respect to saturation and hue (a ^* and b ^* ), and determines whether or not the transparent coating agent is applied.

<6-6>
In the above embodiment, the inspection unit 50 a includes the luminance removal unit 53. However, the inspection unit 50a may not include the luminance removal unit 53. For example, when the inspection unit 50a does not include the luminance removal unit 53, the determination unit 54 may selectively use only the data from which the luminance has been removed.

For example, the data converter 52 converts each color component data of RGB into color space data represented by luminance (L ^* ), saturation (c ^* ), and hue angle (h ^* ). The determination unit 54 extracts the saturation (c ^* ) from the color space data represented by the luminance (L ^* ), the saturation (c ^* ), and the hue angle (h ^* ), and uses it as inspection chromaticity data. The determination unit 54 compares the inspection chromaticity data with the chromaticity data threshold value to determine the presence or absence of the transparent coating agent.

<6-7>
In the above embodiment, RGB color images are acquired. However, it is only necessary to extract the saturation, hue angle, and the like from the image, and the acquired image is not limited to an RGB color image. In the above, color space data is acquired based on the L ^* c ^* h ^* color system. However, it is only necessary to extract saturation and hue angle, and other color systems such as HSV and HLS may be used.

<6-8>
In the above embodiment, the example shown in FIG. 3 and FIG. However, the inspection apparatus 100 is not limited to the above configuration as long as the configuration can inspect whether or not the transparent coating agent is applied to the coloring member 10. For example, the transport device 34 may be configured by only one first transport device 34a. Further, the transport device 34 may include another transport device so that more inspections can be performed.

  Or the inspection apparatus 100 may be comprised only from the apparatus which can test | inspect the presence or absence of application | coating of the transparent coating agent in the coloring member 10. FIG. For example, the inspection apparatus 100 may not include the transport apparatus 34 for performing a plurality of inspections. Therefore, the inspection apparatus 100 may be configured to include a set of the light irradiation device 31, the imaging device 32, and the control device 20.

<6-9>
In the above embodiment, the cap that covers the puncture needle, the gasket that is attached to the tip of the piston, and the like related to the syringe have been described as examples of the coloring member 10. However, the colored member 10 is not limited to this as long as it is an opaque member to which a transparent coating agent is applied to ensure slidability. For example, the coloring member 10 includes a lid stopper for sealing a container such as a colored vial in which a chemical solution or the like is sealed. In addition, as the coloring member 10, for example, a packing for preventing outflow of liquid or the like from the inside of the container and / or preventing entry of a foreign substance from the outside of the container can be used.

<6-10>
In the above embodiment, a ring illumination device is used as the light irradiation device 31a. However, the light irradiation device 31a is not limited to the ring illumination device as long as it can irradiate the coloring member 10 with light. For example, a coaxial epi-illumination device that emits parallel light may be used as the light irradiation device 31a. When the colored member 10 is irradiated with parallel light, substantially uniform light with reduced illuminance unevenness can be irradiated. Therefore, it is possible to suppress a decrease in inspection accuracy due to illuminance unevenness.

<6-11>
In the above-described embodiment, the light irradiation device 31 irradiates the colored member 10 with parallel light having parallel incident optical axes. However, the irradiation light is not limited to parallel light, and may be diffused light. However, when the colored member 10 is irradiated with parallel light, a decrease in light intensity due to the diffusion of light can be suppressed. Therefore, the chromaticity data with application of the colored member 10 to which the transparent coating agent is applied and the transparent coating agent are applied. There is a tendency that the difference from the non-application chromaticity data of the colored member 10 that has not been applied increases. Thereby, the reference | standard for judging the presence or absence of a transparent coating agent can be defined clearly. Therefore, the presence / absence of the transparent coating agent can be more accurately determined by determining the presence / absence of the transparent coating agent in the colored member 10 using the clearly defined criteria.

Examples of the present invention will be described below. However, the present invention is not limited to the following examples.
As a test object, a colored member 10 having a substantially cylindrical shape having a height of about 12 mm and a diameter of about 15 mm was prepared. Silicon was used as the transparent coating agent applied to the colored member 10. For the inspection, 10 pieces that were not washed without applying silicon to the colored member 10, 10 pieces that were not washed by applying silicon to the colored member 10, and no silicon was applied to the colored member 10. A total of 40 were used, 10 washed and 10 washed with silicon applied to the colored member 10. Then, saturation (c ^* ) was calculated for these 40 samples.

FIG. 11 shows the saturation (c ^* ) for each of the 10 members that were not cleaned without applying silicon to the colored member 10 and the 10 members that were not cleaned after applying silicon to the colored member 10. The measurement results are shown. FIG. 12 shows the results of measuring the saturation (c ^* ) for each of the 10 washed without applying silicon to the colored member 10 and the 10 washed with silicon applied to the colored member 10. Show.

  In FIG. 11 and FIG. 12, the case where silicon is applied (with silicon) is indicated by a solid line, and the case where silicon is not applied (without silicon) is indicated by a broken line.

Referring to FIG. 11, the saturation (c ^* ) of the sample to which silicon is applied is located substantially below the saturation (c ^* ) of the sample to which silicon is not applied. From FIG. 11, for a sample that has not been cleaned, the reference (chromaticity data threshold) of saturation (c ^* ) for determining the presence or absence of silicon is, for example, the saturation (c ^* ) of a sample coated with silicon. And an average value of the saturation (c ^* ) of the sample to which no silicon is applied. As shown in FIG. 11, the difference in saturation (c ^* ) is clearly divided depending on the presence or absence of silicon, and a judgment criterion (chromaticity data threshold value) based on the presence or absence of silicon can be clearly defined.

Next, referring to FIG. 12, the saturation (c ^* ) of the sample to which silicon is applied is located substantially below the saturation (c ^* ) of the sample to which silicon is not applied. Also, from FIG. 12, for the washed sample, the saturation (c ^* ) standard (chromaticity data threshold) for determining the presence or absence of silicon is, for example, the saturation (c ^* ) of the sample coated with silicon. And an average value of the saturation (c ^* ) of the sample to which no silicon is applied. For example, according to FIG. 12, the chromaticity data threshold value based on the saturation (c ^* ) can be about 27.95. As shown in FIG. 12, the difference in saturation (c ^* ) is clearly divided depending on the presence or absence of silicon, and a judgment criterion (chromaticity data threshold) based on the presence or absence of silicon can be clearly defined.
Further, in FIG. 11 without cleaning and FIG. 12 with cleaning, FIG. 12 with cleaning clearly shows the difference between the saturation without silicon (c ^* ) and the saturation with silicon (c ^* ). It turns out that it is.

DESCRIPTION OF SYMBOLS 10 Coloring member 31 Light irradiation apparatus 32 Imaging device 100 Inspection apparatus

Claims (14)

Irradiating the colored member to be inspected with light by a light irradiation device;
Photographing the inspection object irradiated with light with an imaging device;
Obtaining RGB color component data for the inspection object from the image acquired by the imaging device;
Converting the color component data to be inspected into color space data represented by luminance, saturation and hue;
Unapplied chromaticity data expressed by the saturation and / or hue of a colored member to which a transparent coating agent is not applied, and the application expressed by the saturation and / or hue of a colored member to which a transparent coating agent is applied Determining the presence or absence of a transparent coating agent in the inspection object based on at least one of the chromaticity data and the inspection chromaticity data of the inspection object represented by saturation and / or hue;
An inspection method comprising:   The inspection method according to claim 1, further comprising a step of removing luminance from the color space data and acquiring inspection chromaticity data represented by saturation and / or hue for the inspection object. The color space data is represented by luminance (L ^* ), saturation (c ^* ) and hue angle (h ^* ) using the L ^* c ^* h ^* color system.
The non-application chromaticity data, the application chromaticity data, and the inspection chromaticity data are represented by saturation (c ^* ) and / or hue angle (h ^* ) based on the color space data. Item 3. The inspection method according to item 1 or 2. The inspection method according to claim 3, wherein the non-application chromaticity data, the application chromaticity data, and the inspection chromaticity data are represented by saturation (c ^* ) based on the color space data.   The inspection method according to any one of claims 1 to 4, wherein the light applied to the colored member to be inspected is parallel light.   The inspection method according to claim 1, wherein the transparent coating agent is silicon.   The inspection method according to claim 1, wherein the colored member is an elastic body.   The inspection method according to claim 1, wherein the colored member is opaque.   In the step of determining the presence / absence of the transparent coating agent, the inspection chromaticity data is compared with the chromaticity data threshold value based on the non-application chromaticity data and the application chromaticity data, and the inspection object is transparent. The test | inspection method in any one of Claims 1-8 which judges the presence or absence of a coating agent. A light irradiation device for irradiating light to a colored member to be inspected; and
An imaging device for photographing the inspection object irradiated with light;
Based on the image acquired by the imaging device, an inspection unit that inspects the presence or absence of a transparent coating agent in the colored member that is the inspection target;
With
The inspection unit
A color component data acquisition unit that acquires RGB color component data for the inspection object from an image captured by the imaging device;
A data conversion unit that converts the color component data to be inspected into color space data represented by luminance, saturation, and hue;
Unapplied chromaticity data expressed by the saturation and / or hue of a colored member to which a transparent coating agent is not applied, and the application expressed by the saturation and / or hue of a colored member to which a transparent coating agent is applied A determination unit that determines the presence or absence of a transparent coating agent in the inspection target based on at least one of the chromaticity data and the inspection chromaticity data of the inspection target represented by saturation and / or hue;
including,
Inspection device.   The inspection according to claim 10, further comprising a luminance removal unit that removes luminance from the color space data and acquires inspection chromaticity data represented by saturation and / or hue for the inspection target. apparatus. The inspection unit further includes a threshold storage unit that stores a chromaticity data threshold value based on the non-application chromaticity data and the application chromaticity data for each type of coloring member,
The determination unit reads a chromaticity data threshold corresponding to the coloring member to be inspected from the threshold storage unit, and based on the read chromaticity data threshold and the inspection chromaticity data, the transparent coating agent in the inspection target The inspection apparatus according to claim 10, wherein the presence or absence of the test is determined. Forming a colored coloring member;
Irradiating the colored member to be inspected with light by a light irradiation device;
Photographing the inspection object irradiated with light with an imaging device;
Obtaining RGB color component data for the inspection object from the image acquired by the imaging device;
Converting the color component data to be inspected into color space data represented by luminance, saturation and hue;
Unapplied chromaticity data expressed by the saturation and / or hue of a colored member to which a transparent coating agent is not applied, and the application expressed by the saturation and / or hue of a colored member to which a transparent coating agent is applied Determining the presence or absence of a transparent coating agent in the inspection object based on at least one of the chromaticity data and the inspection chromaticity data of the inspection object represented by saturation and / or hue;
A method for producing a colored member.   The manufacturing according to claim 13, further comprising the step of removing the coloring member corresponding to the inspection color data determined to have no transparent coating agent from the manufacturing process of the coloring member in the step of determining the presence or absence of the transparent coating agent. Method.