JP2010182249A - Authentication determination system for label sheet, reference image acquiring apparatus, authentication determination apparatus and label sheet used for them - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a label sheet surely preventing counterfeit and an authentication determination system for the label sheet. <P>SOLUTION: The authentication determination system for the label sheet 60 is provided with: a first image information acquiring apparatus 40 for acquiring electronic first image information by radiating light with a different wavelength from visible light on a label sheet 60 provided with sticking labels 60A containing fluorescent fibers 62A which can be made visible by radiation of light with the different wavelength from the visible light; a hard disk apparatus 12 for storing beforehand reference image information in a region corresponding to the sticking labels 60A in the first image information that is acquired by the first image information acquiring apparatus 40; a second image information acquiring apparatus 140 for acquiring electronic second image information by radiating light with a different wavelength from the visible light on the sticking labels 60A whose authentication is to be determined; and a CPU 111 for comparing the second image information with the reference image information that is recorded to a hard disk apparatus 12 and determining whether or not the two match. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a label sheet authenticity determination system, a reference image acquisition apparatus, an authenticity determination apparatus, and a label sheet used for them.

  Conventionally, for example, a label with a hologram described in Patent Document 1 is known as a label sheet for assuring that a product is genuine. Such a hologram-attached label displays a three-dimensional pattern using light interference, and requires advanced technology for manufacturing. For this reason, it is difficult to forge the label. For example, the serial number of the product is displayed. Used for serial labels.

JP 2007-86252 A

  However, the hologram-attached label may be forged if there is an advanced manufacturing technique. Moreover, since a high technology is required for manufacturing, the manufacturing cost is increased.

  The present invention has been completed based on the above circumstances, and an object thereof is to provide a label sheet and a label sheet authenticity determination system that can prevent forgery more reliably.

  The present invention is directed to electronically irradiating a label sheet comprising a pressure-sensitive adhesive label containing a fluorescent substance that is visible by irradiation with light having a wavelength different from that of visible light, with the light having a wavelength different from that of visible light. First image information acquisition device for acquiring first image information, and reference image information of an area corresponding to the adhesive label among the first image information acquired by the first image information acquisition device. A storage device that stores in advance, a second image information acquisition device that acquires electronic second image information by irradiating light having a wavelength different from that of visible light onto an adhesive label to be determined as authentic, and the first And an image information determination device that compares the two pieces of image information with the reference image information recorded in the storage device and determines whether or not they match.

As an embodiment of the present invention, the following configuration is preferable.
In the storage device, a visible identification symbol set in the adhesive label is stored in association with the reference image information, and the image information determination device is set in the adhesive label for determining the authenticity. The reference image information corresponding to the identification symbol is compared with the second image information to determine whether or not they match. With such a configuration, the image information determination device only needs to acquire only the reference image information corresponding to the identification symbol of the adhesive label whose authenticity is to be determined from the storage device and compare it with the second image information. . Therefore, the determination can be easily performed.

  You may have an image formation apparatus for forming an image in the said label sheet before acquiring the said 1st image information by the said 1st image information acquisition apparatus. With such a configuration, the reference image information can be acquired by the first image information acquisition apparatus immediately after the image is formed on the label sheet by the image forming apparatus.

  It is preferable that the fluorescent substance has a different accidental arrangement for each adhesive label and is included in the adhesive label. With such a configuration, it is difficult to intentionally make the same fluorescent substance array, and it is difficult to forge the adhesive label.

  According to the present invention, first, for a label sheet, first image information is acquired by a first image information acquisition device, and reference image information of an area corresponding to an adhesive label is stored among the image information. Store it in the device. Then, the second image information acquisition device is used to obtain the second image information by applying the adhesive label that is desired to be authentic, and the image information determination device determines whether or not the second image information matches the reference image information. Judgment is made, and it is judged as authentic when they match. Thereby, the authenticity of the adhesive label can be determined. Moreover, since a fluorescent substance cannot be visually recognized with visible light, imitation or forgery of an adhesive label is difficult. Furthermore, since the label sheet to which the forgery prevention effect is added can be manufactured by a relatively simple manufacturing method in which the adhesive label contains a fluorescent substance, the manufacturing cost can be reduced.

Cross section of label sheet Front view of label sheet Block diagram showing the electrical configuration of the reference image acquisition device Block diagram showing the electrical configuration of the authentication device Schematic diagram showing an image of an adhesive label (serial label) irradiated with ultraviolet light Flow chart showing reference image information acquisition processing Flowchart showing authentication processing FIG. 3 is a block diagram illustrating an electrical configuration of a reference image acquisition device according to a second embodiment.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS.
(1) Configuration of Label Sheet As shown in FIG. 1, the label sheet 60 of the present embodiment has a laminated structure of an adhesive sheet 61 and a release sheet 66. Each of the adhesive sheet 61 and the release sheet 66 is configured by matching the outer edges of rectangular (in this embodiment, rectangular) paper, and is set to a size of, for example, A4 size as a whole. (Fig. 2).

  The release sheet 66 includes a release base sheet 67 and a release layer 68 laminated on one surface thereof. The release layer 68 is formed by application of a release agent such as silicone that is normally used when creating the release sheet 66, and is formed on the entire surface of the release substrate sheet 67.

  The pressure-sensitive adhesive sheet 61 includes a base material sheet 62 on which characters and the like can be printed, and a pressure-sensitive adhesive layer 63 laminated on one surface thereof (the back surface in the present embodiment). The base sheet 62 is made by mixing, for example, 0.05% to 1% by weight of fluorescent fibers 62A with respect to the pulp fibers. Since the position distribution of the fluorescent fibers 62A mixed with the pulp fibers is irregularly changed in the paper making process of the base sheet 62, the fluorescent fibers 62A are accidentally arranged in the base sheet 62. The fluorescent fiber 62A is a polyester fiber or nylon fiber colored with a fluorescent dye or fluorescent pigment that develops fluorescence when irradiated with ultraviolet light, and preferably has a length of several millimeters to several centimeters. In this embodiment, ultraviolet light is an example of “light having a wavelength different from visible light” described in the claims, and the fluorescent fiber 62A is an example of “fluorescent substance” described in the claims. It is.

  In addition, the adhesive sheet 61 is formed with a label dividing slit 64 that is closed in a substantially rectangular shape by cutting into a depth reaching the adhesive layer 63 from the base sheet 62. As shown in FIG. 2, a plurality of adhesive labels 60 </ b> A are formed so as to be separated from the surroundings by being surrounded by the label dividing slit 64. A pair of left and right adhesive labels 60A are arranged side by side in the short side direction of the label sheet 60, and a plurality of adhesive labels 60A are arranged side by side in the long side direction of the label sheet 60. Those adjacent in the short side direction are partitioned by the same label dividing slit 64 without any gap. As shown in FIG. 1, the pressure-sensitive adhesive layer 63 is superposed on the release layer 68 and can be peeled from each other at the interface between the two.

(2) Authenticity Determination System The authentication determination system according to the present embodiment includes a reference image acquisition device 16 and an authentication determination device 17. In the present embodiment, as shown in FIG. 2, information such as a product serial number S and an identification symbol N (described later) set on each adhesive label 60 </ b> A is printed in advance on each adhesive label 60 </ b> A of the label sheet 60. Then, the reference image acquisition device 16 acquires reference image information (details will be described later), which is image information unique to each adhesive label 60A, on the label sheet 60 (hereinafter referred to as a serial label sheet 70) in a state where the information is printed. Then, the authenticity determination device 17 performs authenticity determination on the adhesive label 60A (hereinafter referred to as serial label 70A) attached to the product 19.

  Here, the identification symbol N is set by combining, for example, an identification number set uniquely for the printed label sheet 60 and an identification number set for each adhesive label 60A in the label sheet 60. Taking the case where the serial number S is printed on the label sheet 60 of identification number 50 as an example, the identification symbol N of the seventh adhesive label 60A (for example, the upper right adhesive label in FIG. 2) in this serial label sheet 70 is It is set to 050,000-07.

(2-1) Configuration of Reference Image Acquisition Device As shown in FIG. 3, the reference image acquisition device 16 is configured by connecting an image reading device 20 to a management computer 10. In the image reading apparatus 20, a plurality of conveying rollers 22 driven by a motor 21 are arranged, and a serial label sheet 70 inserted from a paper insertion opening (not shown) is conveyed from the left side to the right side in the drawing. Is discharged from a discharge port (not shown). In the vicinity of the conveyance path of the label sheet 60 by the conveyance roller 22, the first image information acquisition device 40 is provided along the conveyance path.

  The first image information acquisition device 40 includes a light source 41 that emits ultraviolet light and a first CCD sensor 42 that receives light from the conveyed serial label sheet 70. The light source 41 is a linear light source, and is installed so as to extend in a direction orthogonal to the conveyance direction of the serial label sheet 70. The first CCD sensor 42 is composed of a line sensor extending in a direction orthogonal to the conveyance direction of the serial label sheet 70, and receives the wavelength region of visible light and outputs an image signal. In addition, when the first CCD sensor 42 has a light receiving characteristic with respect to ultraviolet light, it is desirable to provide an ultraviolet cut filter in the light receiving window. The light source 41 is driven to be lit by a lamp power source 51.

  The management computer 10 includes a CPU 11, a hard disk device 12 that is electrically connected to the CPU 11, a display device 13, and an input device 18 (for example, a keyboard). An input port of the CPU 11 is provided with an A / D converter 14 for A / D converting an image signal from the CCD sensor 42 of the image reading device 20. Each image signal is digitized and output to the CPU 11. The And the output port of CPU11 is connected to the lamp power supply 51 and the control terminal of the motor 21, and can control them. The hard disk device 12 serving as a storage device stores a program (described later) for acquiring reference image information of the serial label sheet 70 in cooperation with the image reading device 20.

(2-2) Configuration of authenticity determination device The authenticity determination device 17 is configured by connecting the second image information acquisition device 140 to the management computer 110 as shown in FIG. The second image information acquisition device 140 includes a light source 141 that is a linear light source that emits ultraviolet light, and a second CCD sensor 142 that receives light from the adhesive label. The second CCD sensor 142 is, for example, a hand-held hand scanner that scans the serial label 70 </ b> A by being held and moved by the user, and receives the wavelength region of visible light and outputs an image signal. If the second CCD sensor 142 has a light receiving characteristic for ultraviolet light, it is desirable to provide an ultraviolet cut filter in the light receiving window. The light source 141 is driven to be lit by a lamp power source 151.

  The management computer 110 includes a CPU 111, a hard disk device 112 that is electrically connected to the CPU 11, a display device 113, and an input device 118 (for example, a keyboard). An input port of the CPU 111 is provided with an A / D converter 114 for A / D converting the image signal from the second CCD sensor 142, and each image signal is digitized and supplied to the CPU 111. The output port of the CPU 111 is connected to the control terminal of the lamp power supply 151 and can control it. The hard disk device 112, which is a storage device, stores a program for acquiring image information of the serial label 70A in cooperation with the second image information acquisition device 140.

  For example, the reference image acquisition device 16 and the authenticity determination device 17 are installed in different places and are connected to each other via a cable or a network (including the Internet). Thus, the authenticity determination device 17 can acquire reference image information (described later) of the serial label sheet 70 stored in the reference image acquisition device 16.

(2-3) Processing of Reference Image Acquisition Device When a program stored in the hard disk device 12 of the reference image acquisition device 16 is activated, reference image information is acquired according to the flowchart shown in FIG. First, the user operates the input device 18 to input the identification symbol N set for each serial label 70A of the serial label sheet 70 for which reference image information is to be registered (S10). Next, the lamp power source 51 is driven by a signal from the management computer 10, the light source 41 is turned on, and the transport roller 22 is rotated by driving the motor 21 (S20).

  Therefore, when the serial label sheet 70 is inserted from the paper insertion opening of the image reading apparatus 20, the serial label sheet 70 is conveyed from the left side to the right side in FIG. One image information acquisition device 40 is passed through.

  When the serial label sheet 70 is conveyed to the first image information acquisition device 40, the serial label sheet 70 illuminated by the light source 41 (ultraviolet light) is irradiated with ultraviolet light by fluorescent fibers mixed in the security paper. In order to receive fluorescence (visible light), the first CCD sensor 42 receives the light.

  By the way, since the normal paper fiber constituting the serial label sheet 70 receives ultraviolet light, it reflects only part of it and does not emit fluorescence. It is not recognized by the sensor 42. For this reason, if the serial label sheet 70 that has not been printed is passed through the second image information acquisition device 40, the image acquired by the first CCD sensor 42 has disordered fluorescent fibers throughout the sheet. The image will be scattered and scattered.

  On the other hand, in the present embodiment, since characters indicating the serial number S and the identification symbol N are printed on the serial label sheet 70, these characters overlap on the fluorescent fibers 62A scattered randomly. When characters overlap on the fluorescent fiber 62A, the ultraviolet light is blocked by the characters and is not irradiated locally on the fluorescent fiber 62A. For this reason, in the image actually acquired by the first CCD sensor 42, the fluorescent fibers 62A scattered randomly are emitting light, but in the portion where the characters are printed on the fluorescent fibers 62A, the characters are printed. Therefore, the fluorescent fiber 62A does not emit light.

  For this reason, the information of the first CCD sensor 42 includes image information unique to the label sheet depending on the dispersion state of the fluorescent fibers 62A used in the serial label sheet 70, and the contents (characters etc.) printed thereon. ) Information mixed with specific image information. An image of the serial label 70A of the serial label sheet 70 when irradiated with ultraviolet light is shown in the schematic diagram of FIG. In the figure, the light emission part due to fluorescence is shown in black, and in the circular enlarged part in the figure, the light emission of the fluorescent fiber 62A is locally blocked by characters (here, part of the printed serial number S). Indicates the state.

  When the first image information acquisition apparatus 40 acquires the first image information from the ultraviolet light source as described above from the serial label sheet 70 (S30), the serial label sheet 70 is not shown on the right side of the apparatus. Thereafter, the lamp power supply 51 is turned off to turn off the light source 41 and the motor 21 is stopped to stop the transport roller 22 (S40).

  Next, the CPU 11 performs image processing on the acquired first image information (image of the entire label sheet), and cuts out areas corresponding to the adhesive labels 60A (for example, the entire area of the adhesive labels 60A). The image of the area corresponding to each cut-out adhesive label 60A is stored in the hard disk device 12 as a predetermined format image file (reference image information) in association with each identification symbol N previously input. (S50). In addition, when the area corresponding to each adhesive label 60A is cut out from the first image information, for example, the size of the label sheet 60 and the coordinate data of the formation location of the label dividing slit 64 formed in the label sheet 60 are previously stored. What is necessary is just to memorize | store in the hard-disk apparatus 12, and specify the area | region of each label 60A based on these. Further, one record constituting the database is created for each registration of image information, and a field for recording reference image information and a field for recording a corresponding identification symbol N are included for each record.

  After the process of S50 is completed, whether or not to end the registration of the reference image information is displayed on the display device 13. If it is selected not to end the registration, the process returns to S10 and the next serial label sheet 70 is displayed. When the registration of the reference image information is repeatedly performed and it is selected to end the registration, the program for acquiring the reference image information is ended.

(2-4) Processing of the authenticity determination device The authenticity determination device 17 performs the authenticity determination on the serial label 70A attached to the product 19 as follows. When the system is activated, the authentication program shown in the flowchart of FIG. 7 is executed.

  First, the user inputs the identification symbol N printed on the serial label 70A using the input device 118 (S70). Next, the CPU 111 activates the light source 141 and irradiates the serial label 70A with ultraviolet light. In this state, the user acquires the second image information by scanning the second CCD sensor 142 with respect to the serial label 70A (S90).

  Next, the CPU 111 reads the database information stored in the hard disk device 12 of the reference image acquisition device 16, and from the record group constituting the database, the serial label corresponding to the identification symbol N input by the process of S70. 70A reference image information is acquired. Then, the second image information and the reference image information are compared to determine whether or not they match (S100). If the two match, “true” is displayed on the display device 13 (S110). Here, the image information match is not a complete match, and a difference within a certain range is allowed in consideration of dirt adhering to the serial label 70A, the degree of deterioration of the light sources 41 and 141 and the CCD sensors 42 and 142, and the like. Suppose you see the identity.

  If the second image information does not match the reference image information, “false” is displayed on the display device 113 (S120). Examples of such determination include when the serial number S or the identification symbol N printed on the serial label 70A has been altered to be different from the original, or for a serial label different from the serial label 70A. In some cases, the same serial number S and identification symbol N as the original are printed.

  As described above, in the present embodiment, the reference image information by ultraviolet light is acquired for the serial label 70A and stored. Then, it is possible to determine the authenticity of the serial label to be determined by acquiring image information using ultraviolet light and determining whether or not it matches the reference image information. Further, since the fluorescent substance cannot be visually recognized with visible light, it is difficult to imitate or counterfeit the serial label 70A.

  Further, since the fluorescent fiber 62A is engraved in the serial label 70A, the reference image by the ultraviolet light is an image in which an accidental arrangement of fluorescent substances different for each serial label 70A is reflected. For this reason, it is difficult to intentionally produce a serial label having the same fluorescent substance arrangement, and it is difficult to forge the serial label.

  Moreover, since the base sheet 62 can produce a label sheet to which an anti-counterfeiting effect is added by a relatively simple production method in which the fluorescent fibers 62A are mixed with pulp fibers to make paper, the production cost can be reduced.

  The hard disk device 12 stores an identification symbol N corresponding to each serial label 70A and reference image information in association with each other. With such a configuration, the CPU 111 of the authenticity determination device 17 acquires only the reference image information corresponding to the identification symbol N of the serial label 70A to be determined authenticity from the hard disk device 12, and the second image information. A comparison may be made. Therefore, the determination can be easily performed.

<Embodiment 2>
A second embodiment of the present invention will be described with reference to FIG. The same parts as those of the first embodiment are denoted by the same reference numerals, and redundant description is omitted, and only different points will be described. The authenticity determination system according to the second embodiment includes a known laser printing apparatus 91 as an image forming apparatus in addition to the reference image acquisition apparatus 16 according to the first embodiment, and a paper tray 92 that supplies printing paper to the laser printing apparatus 91. The entire system including the management computer 10 of the first embodiment is housed in one housing. The hard disk device 12 stores a print control program for controlling the laser printing device 91 to form a desired character / image on a sheet. A plurality of label sheets 60 are set in advance in the paper tray 92.

  The authenticity determination system according to the second embodiment is configured as a multifunction machine having a printing function. According to this, the serial number S, the identification symbol N, etc. are printed on the label sheet 60 by the laser printing device 91, and then the label sheet 60 (serial label sheet 70) of the label image 60 is immediately imprinted by the first image information acquisition device 40. The reference image information can be acquired and automatically stored in the hard disk device 12.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the above embodiment, the fluorescent substance is exemplified by a substance that emits fluorescence by ultraviolet light. However, the present invention is not limited to this, and a fluorescent substance that emits fluorescence by infrared light may be used. What is necessary is just to emit fluorescence by the light (electromagnetic wave) of a wavelength.

  (2) In the above embodiment, the serial number S is printed on the adhesive label 60A and used as a serial label. However, the present invention is not limited to this. For example, the adhesive label 60A may be used as a security seal that cannot be reattached. Specifically, the film is sandwiched between the adhesive layer 63 and the base sheet 62 of the adhesive label 60A, the base sheet 62 and the film are set to be peelable, and the adhesive layer 63 and the film are set to be non-peelable. Keep it. If it does in this way, when the adhesive label 60A stuck once is peeled off, since the film and the adhesive layer 63 remain on the object to be stuck, it becomes impossible to re-adhere.

  When the third party peels off the adhesive label 60A and opens it illegally with respect to the envelope sealed with the adhesive label 60A, it is assumed that the same type of adhesive label 60A is reapplied to conceal the unauthorized opening. Is done. However, since the arrangement of the fluorescent fibers in the adhesive label 60A is different for each adhesive label 60A, it can be determined that the adhesive label 60A is not originally attached. For this reason, unauthorized opening can be suppressed.

  (3) In the above embodiment, the authenticity determination system is composed of two devices, the reference image acquisition device 16 and the authenticity determination device 17, but the present invention is not limited to this. For example, if a program for authenticity determination is stored in the reference image acquisition device 16, it is possible to acquire reference image information and determine authenticity only by the reference image acquisition device 16.

  (4) In the above embodiment, the entire area of the adhesive label 60A is cut out as reference image information, but only a part of the adhesive label 60A may be cut out as reference image information. For example, only the non-printing area of the adhesive label 60A may be cut out as reference image information, and the authenticity determination apparatus may acquire the second image information for the same area. In this way, in the region corresponding to the reference image information, characters are not printed over the fluorescent fiber 62A. Therefore, the reference image information is obtained from the label sheet 60 before printing, and the printed image is printed. It is possible to determine authenticity with the second image information.

  (5) In the above embodiment, the hard disk device 12 is used as a storage device for storing the reference image information. However, as an alternative storage device, for example, a flexible disk, an optical disk, a magneto-optical disk, a nonvolatile memory card, or the like is used. May be used.

  (6) In the above embodiment, authenticity is determined based on image information acquired by irradiating the serial label sheet 70 with ultraviolet light. In addition to the determination by ultraviolet light, authenticity determination may be performed by image information acquired by irradiating the serial label sheet 70 with visible light. Specifically, a visible light source is installed in the reference image acquisition device 16, and reference image information acquired by irradiating visible light is associated with the identification symbol N and stored in the hard disk device 12. On the other hand, a visible light source is also installed in the authenticity determination device 17, and image information is acquired by irradiating visible light to the serial label 70A to be determined authenticity. Then, authenticity is determined based on the acquired image information and the reference image information stored in the hard disk device 12.

  By doing so, it is possible to determine identity based on two types of image information of visible light and ultraviolet light. For this reason, in each determination, for example, even if the determination standard is lowered in consideration of dirt adhering to the serial label 70A, the light source light amount of each device 16 and 17, the sensitivity variation of the CCD sensors 42 and 142, etc. By making this determination, it is possible to perform accurate authentication determination.

  (7) In the above embodiment, the identification symbol N corresponding to each adhesive label 60A and the reference image information are stored in the hard disk device 12 in association with each other, but the present invention is not limited to this. For example, only the reference image information may be stored in the hard disk device 12. In the case of this configuration, the CPU 111 of the authenticity determination device 17 searches for reference image information that matches the second image information from the reference image information stored in the hard disk device 12, and determines whether there is matching image information. Can be determined.

  (8) In the above embodiment, an example in which the base sheet 62 of the pressure-sensitive adhesive label 60A is formed from pulp fibers and fluorescent fibers 62A has been described, but the present invention is not limited to this. For example, the base sheet 62 may be a plastic film manufactured from, for example, a polyolefin resin, and a fluorescent material may be mixed into the plastic film. In this case, the fluorescent substance may be mixed as a fiber or a granular material. Alternatively, if a different resin that does not melt with the resin of the film base material is dyed with a fluorescent dye and then formed into a film while kneading the fluorescent resin during the production of a plastic film, the fluorescent resin becomes a film. An accidental pattern will be formed in the resin of the base material. According to the manufacturing method described in this item (8), the following label sheet is obtained. That is, a label sheet comprising a pressure-sensitive adhesive label in which a pressure-sensitive adhesive layer is formed on one surface of a base material sheet, and a release sheet having a release layer superimposed on the pressure-sensitive adhesive layer, wherein the base material sheet is a plastic sheet A label sheet, which is a film and includes a fluorescent material that is made visible by irradiation with light having a wavelength different from that of visible light in an accidental arrangement.

(9) In the above embodiment, the example in which the fluorescent fiber 62A is mixed in the base material sheet 62 of the pressure-sensitive adhesive label 60A is shown. However, the base material sheet is not limited to this, and the base material sheet itself is not included. And the pressure-sensitive adhesive layer. For that purpose, for example, a coating liquid in which a predetermined amount of fluorescent fiber is mixed in a polyvinyl alcohol solution is prepared, and the coating liquid is rolled on one surface of a base sheet (preferably a translucent plastic film). A layer containing the fluorescent fibers in an accidental arrangement is formed by coating with a coater or the like, and an adhesive layer is formed thereon. In addition, a pressure-sensitive adhesive layer is formed on the surface of the releasable base film, then fluorescent fibers and fluorescent powder particles are sprayed on the surface of the pressure-sensitive adhesive layer, and a base sheet is superimposed on the surface for pressure bonding. Then, the base film is peeled off and a release sheet is stacked instead. Alternatively, for example, after the base sheet is charged and fluorescent fibers are adsorbed to the base sheet by static electricity, an adhesive layer is formed so as to cover the fluorescent fibers.
According to the manufacturing method described in this item (9), the following label sheet is obtained. That is, a label sheet comprising a pressure-sensitive adhesive label in which a pressure-sensitive adhesive layer is formed on one surface of a base material sheet, and a release sheet in which a release layer is superimposed on the pressure-sensitive adhesive layer, the base material sheet and the A label sheet in which fluorescent substances that are visible by irradiation with light having a wavelength different from that of visible light are included between the pressure-sensitive adhesive layers in an accidental arrangement.

  (10) The fluorescent substance may be mixed in the pressure-sensitive adhesive layer. This can be produced, for example, by a manufacturing method in which a fluorescent substance is mixed in an adhesive and this is applied to the surface of a base sheet. According to this, the following label sheet is obtained. That is, a label sheet comprising a pressure-sensitive adhesive label in which a pressure-sensitive adhesive layer is formed on one surface of a base sheet, and a release sheet in which a release layer is superimposed on the pressure-sensitive adhesive layer, and in the pressure-sensitive adhesive layer Is a label sheet that contains fluorescent substances that are visible when irradiated with light having a wavelength different from that of visible light in an accidental arrangement.

  (11) In the above embodiment, an example in which the identification symbol N is set as a number has been described, but the present invention is not limited to this. The identification symbol may be any unique symbol that can identify each adhesive label 60A. For example, the identification symbol may be set by combining alphabets, other symbols, or a combination thereof.

12: Hard disk device (storage device)
16 ... Reference image acquisition device 17 ... Authentication determination device 40 ... First image information acquisition device 60 ... Label sheet 60A ... Adhesive label 62 ... Base material sheet 62A ... Fluorescent fiber (fluorescent substance)
63 ... Adhesive layer 66 ... Release sheet 68 ... Release layer 91 ... Laser printing apparatus (image forming apparatus)
111... CPU (image information determination device)
140: Second image information acquisition device N: Identification symbol

Claims (7)

The first electronic sheet is formed by irradiating a label sheet comprising an adhesive label containing a fluorescent substance that can be viewed by irradiating light having a wavelength different from visible light with light having the wavelength different from visible light. A first image information acquisition device for acquiring image information;
Among the first image information acquired by the first image information acquisition device, a storage device that stores in advance reference image information of an area corresponding to the adhesive label;
A second image information acquisition device for acquiring electronic second image information by irradiating light having a wavelength different from that of visible light on an adhesive label to be determined authenticity;
A label sheet authenticity determination system comprising: an image information determination device that compares the second image information with the reference image information recorded in the storage device and determines whether or not they match. In the label sheet authenticity determination system according to claim 1,
In the storage device, a visible identification symbol set on the adhesive label is stored in association with the reference image information,
The image information determination device compares the reference image information corresponding to the identification symbol set on the adhesive label to determine the authenticity and the second image information, and determines whether or not they match. A label sheet authenticity judging system characterized by judging. In the label sheet authenticity determination system according to claim 1 or 2,
Furthermore, a label sheet authenticity determination system having an image forming apparatus for forming an image on the label sheet before acquiring the first image information by the first image information acquiring apparatus. In the label sheet authenticity determination system according to any one of claims 1 to 3,
A label sheet authenticity determination system, wherein the fluorescent material has an accidental arrangement different for each adhesive label and is contained in the adhesive label. Electronic image information is obtained by irradiating a label sheet comprising a pressure-sensitive adhesive label containing a fluorescent substance that is visible by irradiation with light having a wavelength different from that of visible light, by irradiating light having the wavelength different from that of visible light. An image information acquisition device to acquire;
A storage device that stores reference image information of an area corresponding to the adhesive label and an identification symbol corresponding to the adhesive label among the image information acquired by the image information acquisition device in association with each other; Image acquisition device. An image information acquisition device that acquires electronic image information by irradiating light having a wavelength different from visible light to the adhesive label to be determined authenticity;
Reference image information acquired in advance by irradiating light having a wavelength different from visible light onto a pressure-sensitive adhesive label containing a fluorescent substance that becomes visible by irradiation with light having a wavelength different from visible light, and the image information And an image information determination device that determines whether or not they match each other. A label sheet comprising a pressure-sensitive adhesive label in which a pressure-sensitive adhesive layer is formed on one surface of a substrate sheet, and a release sheet having a release layer superimposed on the pressure-sensitive adhesive layer,
A label sheet characterized in that the adhesive label contains a fluorescent substance that can be visually observed by irradiation with light having a wavelength different from that of visible light in an accidental arrangement.

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