PTP Management System

Abstract

This system for managing a PTP sheet comprises: an acquiring unit that acquires an image including an image of a grid-like pattern formed on a printing part and a cover film, by imaging a PTP sheet with a camera from an opening section side or a protruding section side of a pocket part on which the printing part is formed; and a generating unit that generates an image for individual identification used for identifying the PTP sheet from the acquired image.

Description

Technical Field

[0001] The present invention relates to a PTP management system for managing individuals of PTP sheets, a PTP management method, a recording medium, and a lighting device.

Background Art

[0002] In the field of pharmaceutical packaging, PTP (Press Through Pack) sheets are widely used as packages for solid preparations such as tablets and capsules. A PTP sheet contains solid preparations as contents in the pocket portions of a container film composed of a plurality of pocket portions having openings on one surface and a flange portion provided at the periphery of the openings and constituting the one surface, and a breakable cover film is heat-bonded to the flange portion to seal the pocket portions.

[0003] Incidentally, combined with the ongoing problem of pharmaceutical counterfeiting, the importance of managing the individuality of individual pharmaceuticals is increasing year by year. Therefore, even in PTP sheets widely used as a form of packaging pharmaceuticals, being able to identify individuals has become an important issue.

[0004] Generally, methods for identifying the individuality of an object include attaching labels such as barcodes and QR codes (registered trademarks) printed with individual identification information, and RFID (Radio Frequency Identifier) storing individual identification information, etc. to the object. There is also a method of directly printing individual identification information on the object using a laser marker or an inkjet. However, in individual identification by the method of imparting individual identification information to an object, labels to be attached to the object, printing equipment for printing on the object, etc. are required, increasing the manufacturing cost. Also, in the method of imparting individual identification information to an object, operations such as attaching a label to the object and printing individual identification information on the object are necessary.

[0005] On the other hand, the individual of an object is identified using artifact metrics such as printing bleeding or so-called object fingerprints (see, for example, Patent Documents 1 and 2). According to such a method, the individual of an object can be identified without the need for processing to impart individual identification information.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, artifact metrics and object fingerprints are very small in size on the order of micrometers. Therefore, when applying them to the individual identification of PTP sheets, high-resolution imaging means are required.

[0008] The present invention aims to provide a PTP management system that solves the above-described problems.

Means for Solving the Problems

[0009] A PTP management system according to one embodiment of the present invention is a system for managing the individual of a PTP sheet in which contents are stored in the pocket portion of a transparent or translucent container film composed of a pocket portion having a plurality of openings provided on one surface and a flange portion provided on the periphery of the pocket portion and constituting the one surface, and a breakable cover film having a predetermined printing portion formed on at least one surface is thermally adhered with the flange portion to seal the pocket portion. An acquisition unit that acquires an image including an image of the printing unit and a lattice pattern formed on the cover film during heat adhesion by photographing the PTP sheet with a camera from the opening side or the protruding side of the pocket portion where the printing unit is formed; A generation unit that generates an individual identification image used for identifying the PTP sheet from the acquired image; is configured to include.

[0010] Further, a PTP sheet management method according to another aspect of the present invention is A method of managing an individual of a PTP sheet in which contents are stored in a pocket portion of a transparent or translucent container film including a pocket portion having a plurality of openings provided on one surface and a flange portion provided on the periphery of the pocket portion and constituting the one surface, and a breakable cover film having a predetermined printing portion formed on at least one surface is heat-bonded to the flange portion to seal the pocket portion, The PTP sheet is photographed with a camera from the opening side or the protruding side of the pocket portion where the printing portion is formed, thereby acquiring an image including an image of the printing portion and a lattice pattern formed on the cover film during heat adhesion, is configured to generate an individual identification image used for identifying the PTP sheet from the acquired image.

[0011] Further, a computer-readable recording medium according to another aspect of the present invention is For a computer that manages an individual of a PTP sheet in which contents are stored in a pocket portion of a transparent or translucent container film including a pocket portion having a plurality of openings provided on one surface and a flange portion provided on the periphery of the pocket portion and constituting the one surface, and a breakable cover film having a predetermined printing portion formed on at least one surface is heat-bonded to the flange portion to seal the pocket portion, By photographing the PTP sheet with a camera from the opening side or the protruding part side of the pocket part where the printing part is formed, a process of acquiring an image including an image of the printing part and a lattice pattern formed on the cover film during thermal adhesion is performed. A process of generating an individual identification image used for identifying the PTP sheet from the acquired image is performed. It is configured to record a program for causing the above to be performed.

[0012] Also, an illumination device according to another aspect of the present invention is An illumination device when photographing a PTP sheet with a camera, A dome illumination that irradiates the PTP sheet with light at an elevation angle of a predetermined elevation angle or more, Coaxial epi-illumination provided between the dome illumination and the camera, A ring illumination provided between the dome illumination and the PTP sheet, which is in an off state when photographing an individual identification image of the PTP sheet and in an on state when photographing an appearance inspection image of the PTP sheet, It is configured to include the above.

Advantages of the Invention

[0013] By having the above-described configuration, the present invention can perform individual identification of the PTP sheet without requiring a high-resolution photographing means.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4A

Figure 4B

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Embodiments for Carrying Out the Invention

[0015] In the process of studying the individual identification of the PTP sheet, the inventor of the present invention found that the positional relationship between the printing part and the lattice pattern is not the same for all individuals of the PTP sheet and differs between individuals, and thus the present invention was achieved. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0016] [First Embodiment] FIG. 1 is a plan view showing an example of the PTP sheet 1 to be managed in the first embodiment of the present invention, and shows the PTP sheet 1 as viewed from its front side (the protruding side of the pocket portion 15). FIG. 2 is a plan view showing the PTP sheet 1 shown in FIG. 1 as viewed from its back side (the opening side of the pocket portion 15). Further, FIG. 3 is a cross-sectional view taken along the line X-X of FIG. 1. Referring to FIGS. 1 to 3, the PTP sheet 1 has a rectangular shape in plan view, and its peripheral portion extends along the longitudinal direction of the PTP sheet 1, and has opposite parallel long side portions 11, 12 and short side portions 13, 14 that are provided between both long side portions 11, 12 and are parallel to each other. In addition, a pocket row composed of five pocket portions 15 arranged along the long side portions 11, 12 is formed in two rows in the short side portions 13, 14 direction. That is, a total of ten pocket portions 15 are formed. One tablet 16 as the content is accommodated in each pocket portion 15. The container film 17 is made of a transparent or translucent material (for example, unstretched polypropylene, etc.), and a plurality of horizontal slits 18 are formed so that it can be separated into pair pieces including, for example, two pocket portions 15. The cover film 19 is made of an opaque material (for example, aluminum foil, etc.), and a predetermined printing portion 20 is provided on the surface on the side attached to the container film 17. In this example, the printing portion 20 is formed by jointly recording the character string "ABCDE" and the character string "200 mg" in two steps, and is provided one by one corresponding to each pocket portion 15, and one is also provided at the top (tag portion) of the PTP sheet. These printing portions 20 are visible from the front side of the PTP sheet 1 through the container film 17 as shown in FIG. 1. In addition, since the lattice-like imprint formed when the cover film 19 is thermally adhered to the container film 17 extends not only to the cover film 19 but also to the attachment surface of the container film 17, the lattice-like pattern 21 formed by the above imprint is visible from the back side (cover film 19 side) of the PTP sheet 1 as shown in FIG. 2, and is also visible from the front side (container film 17 side) of the PTP sheet 1 through the container film 17 as shown in FIG. 1.

[0017] Also, a predetermined printing portion 22 is provided on the surface of the cover film 19 opposite to the side attached to the container film 17. In this example, the printing portion 22 is formed by writing the character string "ABCDE" similar to the printing portion 20 and the character string "200 mg" side by side in two rows. One printing portion 22 is provided corresponding to each pocket portion 15, and one is also provided at the top (tag portion) of the PTP sheet. Therefore, as shown in FIG. 2, the printing portion 22 and the lattice pattern 21 are visible from the back side of the PTP sheet 1. As shown in FIG. 2, since the region of the cover film 19 corresponding to the opening of the pocket portion 15 is not pressed during thermal adhesion, the lattice pattern 21 is not formed.

[0018] The PTP sheet 1 as described above is manufactured by a PTP packaging machine. For example, the PTP packaging machine includes a process of forming pocket portions 15 in a strip-shaped transparent or translucent container film 17, a process of filling articles such as tablets 16 into the pocket portions 15, a process of thermally bonding a strip-shaped cover film 19 to the flange portion of the container film 17, and a process of punching a strip-shaped PTP film composed of the container film 17 and the cover film 19 into PTP sheet units, etc. Through these processes, a large number of PTP sheets 1 can be mass-produced in a short time. The strip-shaped cover film 19 is made of aluminum foil or the like in order to facilitate breakage. Also, printing portions 20, 22 are pre-formed on both surfaces of the strip-shaped cover film 19. In the sealing process of thermally bonding the cover film 19 to the container film 17, in order to prevent breakage or pinholes of the cover film 19 during adhesion and to achieve a strong seal, a metal hot plate or hot roll with a convex lattice pattern on its surface is strongly pressed against the cover film 19 side. As a result, a lattice pattern 21 is formed on the entire flange portion of the cover film 19 except for the pocket portion 15. This lattice pattern 21 can be visually recognized from the cover film 19 side and also from the transparent or translucent container film 17 side. In the above sealing process, the attachment position of the strip-shaped cover film 19 to the strip-shaped container film 17 is automatically adjusted so that the printing portions 20, 22 such as character strings printed on the cover film 19 come to appropriate positions in PTP sheet units. However, since such automatic adjustment does not control the formation position of the lattice pattern 21, due to the influence of slight elongation or contraction of the cover film 19, the positional relationship between the printing portions 20, 22 and the lattice pattern 21 does not become the same for all individuals of the PTP sheet 1, and a phenomenon of difference occurs between individuals. An example thereof is shown in FIGS. 4A and 4B.

[0019] FIG. 4A is an enlarged plan view of a main part near the character "A" of the printed part 20 printed on the PTP sheet 1 of a certain individual. Further, FIG. 4B is an enlarged plan view of a main part near the character "A" at the same location on the PTP sheet 1 of an individual different from the individual shown in FIG. 4A. Even for the character "A" at the same location and the surrounding lattice pattern 21, the positional relationship between the character "A" and the surrounding lattice pattern 21 is different between the individual of FIG. 4A and the individual of FIG. 4B. The phenomenon that the positional relationship between the character and the surrounding lattice pattern is different between individuals occurs at many locations on the PTP sheet 1.

[0020] In this embodiment, the individual of the PTP sheet 1 is identified by utilizing the positional relationship that is not always the same for each individual between the printed part 20 (or 22) and the lattice pattern 21 generated by such a phenomenon. Hereinafter, the PTP management device 100 according to this embodiment will be described in detail.

[0021] FIG. 5 is a block diagram of a PTP management device 100 according to a first embodiment of the present invention. The PTP management device 100 shown in FIG. 5 is an information processing device that manages the individuals of the PTP sheet 1 for manufacturing process management, quality control, shipping management, sales management, and the like.

[0022] Referring to FIG. 5, the PTP management device 100 includes a camera 110, a communication I / F unit 120, an operation input unit 130, a screen display unit 140, a storage unit 150, an arithmetic processing unit 160, and an illumination unit 170.

[0023] The camera 110 is a photographing device that photographs the PTP sheet 1. The camera 110 may be, for example, a visible light and color camera or a black and white camera equipped with a CCD (Charge-Coupled Device) image sensor or a CMOS (Complementary MOS) image sensor having a pixel capacity of about several million pixels. The illumination unit 170 is configured to irradiate the PTP sheet 1 to be photographed with predetermined light.

[0024] The communication I / F unit 120 is composed of a data communication circuit and is configured to perform data communication with an external device wirelessly or by wire. The operation input unit 130 is composed of devices such as a keyboard and a mouse, and is configured to detect an operator's operation and output it to the arithmetic processing unit 160. The screen display unit 140 is composed of a device such as an LCD (Liquid Crystal Display), and is configured to display various information on the screen according to an instruction from the arithmetic processing unit 160.

[0025] The storage unit 150 is composed of a storage device such as a hard disk and a memory, and is configured to store processing information and a program 151 necessary for various processes in the arithmetic processing unit 160. The program 151 is a program that realizes various processing units when it is read into and executed by the arithmetic processing unit 160, and is pre-read from an external device or a recording medium (not shown) via a data input / output function such as the communication I / F unit 120 and stored in the storage unit 150. The main processing information stored in the storage unit 150 includes the individual identification information DB152.

[0026] The individual identification information DB152 is a database that stores an image for individual identification related to the PTP sheet 1 to be registered (hereinafter also referred to as a registration image).

[0027] The arithmetic processing unit 160 has a processor such as an MPU and its peripheral circuits, and is configured to read and execute the program 151 from the storage unit 150, so as to cooperate the above-mentioned hardware and the program 151 to realize various processing units. The main processing units realized by the arithmetic processing unit 160 are a registration unit 161 and a collation unit 162.

[0028] The registration unit 161 is configured to generate an image for individual identification of the PTP sheet 1 to be registered and register it in the individual identification information DB152. The registration unit 161 has an acquisition unit 1611 and a generation unit 1612.

[0029] The acquisition unit 1611 is configured to acquire an image including an image of the printing unit 20 or 22 and the lattice pattern 21 by photographing the PTP sheet 1 to be registered with the camera 110 from the opening side or the protruding side of the pocket unit 15. The generation unit 1612 is configured to generate an individual identification image of the PTP sheet 1 to be registered from the image acquired by the acquisition unit 1611 and store it in the individual identification information DB 152.

[0030] The collation unit 162 is configured to collate the individual identification image of the PTP sheet 1 to be collated (hereinafter also referred to as the collation image) with the registered image stored in the individual identification information DB 152 to identify the individual of the PTP sheet 1. The collation unit 162 includes an acquisition unit 1621, a generation unit 1622, and a determination unit 1623.

[0031] The acquisition unit 1621 is configured to acquire an image including an image of the printing unit 20 or 22 and the lattice pattern 21 by photographing the PTP sheet 1 to be collated with the camera 110 from the opening side or the protruding side of the pocket unit 15. The generation unit 1622 is configured to generate an individual identification image of the PTP sheet 1 to be collated from the image acquired by the acquisition unit 1621.

[0032] The determination unit 1623 is configured to determine whether the PTP sheet 1 to be collated is the same as any of the PTP sheets 1 to be registered by comparing the collation image related to the PTP sheet 1 to be collated generated by the generation unit 1622 with the registered image related to the PTP sheet 1 to be registered stored in the individual identification information DB 152. Further, the determination unit 1623 is configured to display the determination result on the screen display unit 140 and / or output it to an external device through the communication I / F unit 120.

[0033] Next, the operation of the PTP management device 100 will be described. The operation of the PTP management device 100 is roughly classified into a registration operation and a verification operation. FIG. 6 is a flowchart showing an example of the registration operation of the PTP management device 100. Further, FIG. 7 is a flowchart showing an example of the verification operation of the PTP management device 100.

[0034] First, the registration operation of the PTP management device 100 will be described. In the registration operation, as shown in FIG. 6, first, the acquisition unit 1611 captures an image including the images of the printing units 20 or 22 and the lattice pattern 21 of each individual of the PTP sheet 1 to be registered by photographing the PTP sheet 1 with the camera 110 from the opening side or the protruding side of the pocket unit 15 (step S1). Next, the generation unit 1612 generates an image for individual identification (registration image) from the image of each individual of the PTP sheet 1 acquired by the acquisition unit 1611, and stores it in the individual identification information DB 152 (step S2).

[0035] Next, the verification operation will be described. In the verification operation, as shown in FIG. 7, first, the acquisition unit 1621 captures an image including the images of the printing units 20 or 22 and the lattice pattern 21 of the individual of the PTP sheet 1 to be verified by photographing the individual of the PTP sheet 1 with the camera 110 from the opening side or the protruding side of the pocket unit 15 (step S3). Next, the generation unit 1622 generates an image for individual identification (verification image) from the image acquired by the acquisition unit 1621 (step S4). Next, the determination unit 1623 compares the verification image generated by the generation unit 1622 with the registration image stored in the individual identification information DB 152 to determine whether the individual of the PTP sheet 1 to be verified is the same as the individual of any of the PTP sheets 1 to be registered, and outputs the determination result (step S5).

[0036] According to the PTP management device 100 configured and operating as described above, individual identification of the PTP sheet 1 can be performed without the need for high-resolution imaging means. The reason is that an image including a printed portion and a lattice pattern image that are not the same for all individuals of the PTP sheet and differ between individuals is used as the image for individual identification. Further, the printed portion and the lattice pattern can be imaged with sufficient accuracy by imaging means having a resolution of about 150 dpi. On the other hand, artifact metrics such as printing smudges and so-called object fingerprints are on the order of micrometers, so it is difficult to image them with sufficient accuracy at a resolution of about 150 dpi.

[0037] Subsequently, each part of the PTP management device 100 will be described in more detail.

[0038] First, the illumination unit 170 will be described.

[0039] <Example 1 of the illumination unit 170> FIG. 8 is a schematic diagram showing a first example of the illumination unit 170. The illumination unit 170 in this example uses dome illumination 30. The dome illumination 30 includes a hollow and hemispherical dome 31. Further, a white light source 32 such as a white LED is provided inside the dome 31 and at the edge of the lower end. The white light irradiated from the white light source 32 is reflected inside the dome 31 and diffused inside the dome 31. The light diffused inside the dome 31 is irradiated outside the dome from the opening 33a at the lower part of the dome 31 and enters the PTP sheet 1. Further, a camera hole 33b is provided at the top of the dome 31. The camera 110 images the PTP sheet 1 located below the dome 31 through the camera hole 33b. The PTP sheet 1 is placed on a member 2 such as a table or a belt conveyor. The light from the dome illumination 30 incident on the PTP sheet 1 is reflected and diffused by the PTP sheet 1. The light reflected and diffused by the PTP sheet 1 passes through the opening 33a and the camera hole 33b and enters the camera 110.

[0040] In order to photograph the image of the grid pattern of the PTP sheet 1 as a clear light and dark pattern using the dome illumination 30, the dome illumination 30 is used in a way different from the normal usage. That is, the dome illumination 30 is generally used to irradiate light uniformly from all directions above the workpiece. However, in this example, the dome illumination 30 is made such that light is not irradiated onto the PTP sheet 1 at an elevation angle smaller than a predetermined elevation angle. In other words, light is irradiated from the dome illumination 30 onto the PTP sheet 1 only at an elevation angle larger than the predetermined elevation angle. Here, the elevation angle corresponds to the angle θ marked on the PTP sheet 1 in FIG. 8. This is because when the grid pattern is irradiated at a small elevation angle, the shadows of the unevenness of the grid pattern are erased. On the other hand, when the grid pattern is irradiated at a large elevation angle, the flat parts become white and the inclined parts become black, and the grid pattern can be reproduced as a shadow. Also, if light is irradiated from the dome illumination 30 onto the PTP sheet 1, the image of the printed portion of the PTP sheet 1 can be photographed as a sufficiently clear light and dark pattern.

[0041] Therefore, as shown in FIG. 8, the dome illumination 30 is arranged above the PTP sheet 1 at a predetermined distance L. By doing so, light is not irradiated from the dome illumination 30 onto the PTP sheet 1 at an elevation angle smaller than the predetermined elevation angle θth. As a result, the image of the printed portion and the grid pattern of the PTP sheet 1 can be photographed as a clear light and dark pattern. In the research by the present inventor, when using a dome 31 with a width W of 110 to 160 mm and a height H of 55 to 80 mm, the optimal distance L was 100 to 120 mm. For example, when the width W is 110 mm and the distance L is 120 mm, the minimum elevation angle of the dome illumination incident on the point on the surface of the PTP sheet 1 directly below the center of the dome illumination 30 can be calculated as tanθ = 120 / 55, and θ = approximately 65.5 degrees. Also, for example, when the width is 160 mm and the distance is 100 mm, the minimum elevation angle of the dome illumination incident on the point on the above surface can be calculated as tanθ = 100 / 80, and θ = approximately 51.5 degrees. Therefore, the predetermined elevation angle θth can be said to be from about 51 degrees to 66 degrees.

[0042] In this example, a reflective dome illumination 30 was used, but a light guide plate type dome illumination in which a light emitting element such as an LED is embedded in the light guide plate may also be used.

[0043] <Example 2 of the illumination unit 170> FIG. 9 is a schematic diagram showing a second example of the illumination unit 170. The illumination unit 170 in this example uses a dome illumination 30 and a coaxial epi-illumination 40. The dome illumination 30 is the same as that shown in FIG. 8. The coaxial epi-illumination 40 is provided between the dome illumination 30 and the camera 110, and irradiates light from the same axis as the imaging direction of the camera 110. The coaxial epi-illumination 40 includes a hollow and rectangular parallelepiped case 41. Also, inside the case 41 and on one side surface, a white light source 42 such as a white LED is provided. Further, a half mirror 43 is provided inside the case 41. The half mirror 43 is inclined at approximately 45° with respect to the horizontal plane facing downward in the vertical direction and the white light source 42. Openings 44a and 44b are provided on the lower and upper surfaces of the case 41. The white light irradiated from the white light source 42 is partially reflected downward in the vertical direction by the half mirror 43, passes through the opening 44a, and irradiates the PTP sheet 1. Also, the light of the coaxial epi-illumination 40 reflected and diffused by the PTP sheet 1 passes through the half mirror 43 and passes through the opening 44b and enters the camera 110.

[0044] According to the illumination unit 170 shown in FIG. 9, the PTP sheet 1 is irradiated with light also from the coaxial epi-illumination 40 from the camera hole 33b of the dome illumination 30. Therefore, even if the surface of the PTP sheet 1 is slightly and gently curved, it can be irradiated with light uniformly. As a result, the image of the printed portion and the grid pattern of the PTP sheet 1 can be photographed as a clear light and dark pattern, and at the same time, it is possible to prevent the occurrence of light and dark due to curvature that has an adverse effect on individual identification. Although an illumination combining a dome illumination and a coaxial epi-illumination is known, a configuration in which light is not incident on the PTP sheet from the dome illumination at an elevation angle smaller than a predetermined elevation angle is not common.

[0045] <Example 3 of the illumination unit 170> FIG. 10 is a schematic diagram showing a third example of the illumination unit 170. The illumination unit 170 in this example is suitable for taking images suitable for individual identification and appearance inspection with a single device (camera / illumination). The illumination unit 170 in this example uses dome illumination 30, coaxial epi-illumination 40, and ring illumination 50. The dome illumination 30 and the coaxial epi-illumination 40 are the same as those shown in FIG. 9. The ring illumination 50 is provided between the dome illumination 30 and the PTP sheet 1. Therefore, light is irradiated from the ring illumination 50 onto the PTP sheet 1 at a smaller elevation angle than the dome illumination 30. The ring illumination 50 includes a ring-shaped case 51. Further, a white light source 52 such as a white LED is provided on the inner surface of the case 51. The white light irradiated from the white light source 52 irradiates the PTP sheet 1. Also, the white light of the white light source 52 reflected and diffused by the PTP sheet 1 passes through the case 51 and the half mirror 43 and enters the camera 110. The white light source 52 of the ring illumination 50 is turned off when taking an image for individual identification from the PTP sheet 1, and is turned on when taking an image for appearance inspection.

[0046] According to the illumination unit 170 shown in FIG. 10, in a state where the ring illumination 50 is turned off, the case 51 functions as a shielding member that blocks light incident on the PTP sheet 1 from the outside world at a small elevation angle. Therefore, by photographing the PTP sheet 1 with the camera 110 in a state where the dome illumination 30 and the coaxial epi-illumination 40 are turned on and the ring illumination 50 is turned off, an image more suitable for individual identification can be taken without being affected by the outside world.

[0047] Also, according to the illumination unit 170 shown in FIG. 10, when the dome illumination 30, the coaxial epi-illumination 40, and the ring illumination 50 are turned on, the PTP sheet is uniformly irradiated with light from all directions above. Therefore, by photographing the PTP sheet 1 with the camera 110 in that state, the shadow of the grid pattern can be eliminated from the photographed image. As a result, an image suitable for appearance inspection such as printing defect, printing misalignment defect, and punching misalignment defect of the PTP sheet 1 can be taken.

[0048] <Example 4 of the illumination unit 170> FIG. 11 is a schematic diagram showing a fourth example of the illumination unit 170. The illumination unit 170 in this example includes an illumination adjustment unit 60 that optimizes the distance between the PTP sheet 1 and the dome illumination 30. The illumination unit 170 also includes a lifting unit 70 that integrally supports the dome illumination 30, the coaxial epi-illumination 40 and the ring illumination 50 attached to the upper and lower portions thereof so as to be movable up and down. The structure of the lifting unit 70 is arbitrary. For example, the lifting unit 70 may include an arm portion 71 that grips the dome illumination 30, the coaxial epi-illumination 40 and the ring illumination 50, and a guide portion 72 that guides the arm portion 71 to be slidable up and down. Further, the guide portion 72 may be configured to include an electric motor and a screw shaft-nut mechanism that is rotationally driven by this electric motor.

[0049] The illumination adjustment unit 60 is configured to include, for example, a microprocessor and a memory, and is connected to the camera 110 and the guide portion 72 by wire or wirelessly. The illumination adjustment unit 60 can raise and lower the arm portion 71 to an arbitrary position by issuing a command to the guide portion 72. Further, the illumination adjustment unit 60 can take a picture of the PTP sheet 1 with the camera by issuing a command to the camera 110 and acquire an image obtained by the shooting. The illumination adjustment unit 60 is configured to determine a distance at which a grid pattern image of the PTP sheet 1 with a desired image sharpness can be obtained by shooting an image of the grid pattern of the PTP sheet 1 with the camera 110 while changing the distance between the PTP sheet 1 and the dome illumination 30 by controlling the lifting unit 70.

[0050] FIG. 12 is a flowchart showing an example of the process of the illumination adjustment unit 60. The illumination adjustment unit 60 executes the process shown in FIG. 12 before the registration operation of the PTP management device 100 is performed. The process shown in FIG. 12 is performed using a sample of the PTP sheet 1 to be registered. The sample may be one of the PTP sheets 1 to be registered, or may be a prototype having the same structure. Further, the process shown in FIG. 12 is performed with the illumination of the dome illumination 30 and the coaxial epi-illumination 40 being in the on state and the illumination of the ring illumination 50 being in the off state.

[0051] Referring to FIG. 12, the illumination adjustment unit 60 controls the lifting unit 70 to set the distance L between the PTP sheet 1 and the dome illumination 30 to a preset minimum value (step S10). Next, the illumination adjustment unit 60 controls the camera 110 to photograph the PTP sheet 1 from the opening side or the protruding side of the pocket portion, thereby acquiring an image including the images of the printing portion and the lattice pattern (step S11). Next, the illumination adjustment unit 60 calculates the image sharpness of the lattice pattern in the acquired image (step S12).

[0052] The image sharpness of the lattice pattern is an index value representing the degree to which the lattice pattern is clearly shown as a light and dark pattern. The method for calculating the image sharpness of the lattice pattern is arbitrary. For example, the image sharpness of the lattice pattern may be calculated according to Formula 1 and Formula 2 shown in FIG. 13. Here, Sh represents the image sharpness of the lattice pattern, x represents the horizontal width of the captured image, y represents the vertical height of the captured image, the total number of pixels represents the number of pixels in the captured image, G represents the pixel value, and i and j represent the horizontal and vertical coordinates of the pixel, respectively. The image sharpness Sh becomes a larger value as the lattice pattern is more clearly shown. Also, the image sharpness Sh reflects the sharpness of the image portions other than the lattice pattern such as the photo portion and the pocket portion shown in the captured image. However, the sharpness of the image portions other than the lattice pattern does not change significantly depending on the distance and is considered to be almost constant. Therefore, it is possible to determine the superiority or inferiority of the sharpness of the lattice pattern based on the magnitude of the image sharpness Sh. However, it is also possible to detect the image portions other than the lattice pattern such as the printing portion and the pocket portion from the captured image, process all the detected image portions into black or white, and then calculate the image sharpness according to the formula shown in FIG. 13 from the processed image.

[0053] Next, the illumination adjustment unit 60 associates and stores internally the distance L between the PTP sheet 1 and the dome illumination 30 at the time of shooting and the image sharpness Sh calculated from the image shot at that position (step S13). Next, the illumination adjustment unit 60 controls the elevating unit 70 to increment the distance L between the PTP sheet 1 and the dome illumination 30 by a preset minimum width (step S14). Next, the illumination adjustment unit 60 determines whether the incremented distance L exceeds a preset maximum value (step S15). Next, if the maximum value is not exceeded, the illumination adjustment unit 60 returns to step S11 and repeats the same processing as described above.

[0054] On the other hand, if the distance L exceeds the maximum value, the illumination adjustment unit 60 refers to the correspondence between the distance L stored internally and the image sharpness Sh, and determines the distance L at which a desired image sharpness can be obtained (step S16). The desired image sharpness may be, for example, the maximum image sharpness among the above correspondence. Alternatively, the desired image sharpness may be, for example, any of the image sharpnesses above a preset threshold value among the above correspondence. Next, the illumination adjustment unit 60 controls the elevating unit 70 to set the distance between the PTP sheet 1 and the dome illumination 30 to match the determined distance L (step S17). When the adjustment by the illumination adjustment unit 60 is completed, the PTP management device 100 may start the registration operation.

[0055] According to the illumination unit 170 shown in FIG. 11, the distance between the dome illumination 30 suitable for shooting the individual identification image of the PTP sheet 1 and the PTP sheet 1 can be automatically determined and adjusted. The illumination unit 170 shown in FIG. 11 is configured by providing the illumination adjustment unit 60 and the elevating unit 70 to the illumination unit 170 shown in FIG. 10. However, the illumination adjustment unit 60 and the elevating unit 70 shown in FIG. 11 may be provided for the illumination unit 170 shown in FIG. 8 or the illumination unit 170 shown in FIG. 9.

[0056] Subsequently, the registration unit 161 and the verification unit 162 will be described in detail.

[0057] First, the acquisition unit 1611 of the registration unit 161 will be described in detail.

[0058] The acquisition unit 1611 may be configured to acquire, for example, an image obtained by photographing the PTP sheet 1 after being punched out in sheet units by a PTP packaging machine with the camera 110 in the manufacturing process of the PTP sheet 1.

[0059] In the manufacturing process of the PTP sheet 1, a conveyor for conveying the punched PTP sheet 1 in a predetermined posture may be provided. Therefore, by installing the lighting unit 170 and the camera 110 as illustrated in FIGS. 8 to 11 on the conveyor, an image for individual identification of the PTP sheet 1 can be acquired. For example, when the punched PTP sheet 1 is being conveyed by the conveyor with the pocket portion 15 facing upward, the image captured by the camera 110 disposed vertically above the conveyor is, as shown in FIG. 1, an image of the PTP sheet 1 taken from its front surface side (the protruding side of the pocket portion 15). Further, when the punched PTP sheet 1 is being conveyed by the conveyor with the pocket portion 15 facing downward, the image captured by the camera 110 disposed vertically above the conveyor is, as shown in FIG. 2, an image of the PTP sheet 1 taken from its back surface side (the opening side of the pocket portion 15).

[0060] As shown in FIGS. 1 and 2, in the PTP sheet 1 targeted by the present embodiment, the printing portions 20 or 22 and the lattice pattern 21 are formed on both the front surface side and the back surface side of the PTP sheet 1. Therefore, the acquisition unit 1611 may be configured to acquire only the image of the PTP sheet 1 taken from its front surface side and not acquire the image of the PTP sheet 1 taken from its back surface side. Alternatively, the acquisition unit 1611 may be configured to acquire only the image of the PTP sheet 1 taken from its back surface side and not acquire the image of the PTP sheet 1 taken from its front surface side. Alternatively, the acquisition unit 1611 may be configured to acquire both the image of the PTP sheet 1 taken from its front surface side and the image of the PTP sheet 1 taken from its back surface side. Hereinafter, for convenience of explanation, it will be described assuming that the acquisition unit 1611 is configured to acquire only the image of the PTP sheet 1 taken from its front surface side.

[0061] Further, the acquisition unit 1611 may be configured to acquire an image for appearance inspection separately from the image for individual identification of the punched PTP sheet 1. In that case, the illumination unit 170 shown in FIG. 10 or FIG. 11 may be used. The acquisition unit 1611 acquires an image for individual identification by photographing the PTP sheet 1 with the camera 110 in a state where the dome illumination 30 and the coaxial epi-illumination 40 are turned on and the ring illumination 50 is turned off. Further, the acquisition unit 1611 acquires an image for appearance inspection by photographing the PTP sheet 1 with the camera 110 in a state where the dome illumination 30, the coaxial epi-illumination 40, and the ring illumination 50 are turned on. By photographing images suitable for individual identification and appearance inspection respectively with a single piece of equipment (the camera 110 and the illumination unit 170) in this way, the installation space and cost can be reduced as compared with a configuration in which two sets of camera illumination equipment are installed. However, it goes without saying that only the image for individual identification may be photographed.

[0062] Next, the generation unit 1612 of the registration unit 161 will be described in detail.

[0063] The generation unit 1612 first generates a normalized image from the image for individual identification acquired by the acquisition unit 1611. The normalized image is an image in which the orientation and size of the PTP sheet are made constant. The method for generating the normalized image is arbitrary. For example, the generation unit 1612 may generate a normalized image according to the result of matching between a template image having exactly the same printing unit as the printing unit 20 (or 22) and the acquired image. Hereinafter, the normalized image will be referred to as a normalized image. Note that in the generation unit 1622 of the collation unit 162 as well, a normalized image is generated from the acquired image by the same method as the normalization of the image in the generation unit 1612.

[0064] Next, the generation unit 1612 generates a registered image from the normalized image. For example, the generation unit 1612 may use, as the registered image, a set of one or more and n or fewer partial images among the n partial images obtained by dividing the normalized image vertically by n (n is a positive integer of 2 or more). For example, taking the PTP sheet 1 shown in FIG. 1 as an example, a predetermined side among the two partial images obtained by dividing the PTP sheet 1 vertically into two equal parts may be used as the registered image. Alternatively, any one, two, three, or four of the total five partial images obtained by dividing the PTP sheet 1 with a total of four horizontal slits 18 may be used as the partial images. By using, as the registered image, an image smaller in size than the normalized image in this way, it is possible to reduce the storage capacity required for the registered image and to speed up the collation.

[0065] Subsequently, the collation unit 162 will be described in detail.

[0066] First, the acquisition unit 1621 of the collation unit 162 will be described in detail.

[0067] The acquisition unit 1621 may be configured to acquire an image for individual identification, for example, by photographing the PTP sheet 1 for which authenticity determination or origin confirmation is required with the camera 110. The acquisition unit 1621 acquires an image of the PTP sheet 1 on the same side as the image for individual identification acquired by the acquisition unit 1611 of the registration unit 161. That is, when the acquisition unit 1611 is configured to acquire an image of the PTP sheet 1 taken from its front side and not to acquire an image taken from its back side, the acquisition unit 1621 may acquire only the image for individual identification of the PTP sheet 1 to be collated taken from its front side. Also, when the acquisition unit 1611 is configured to acquire an image of the PTP sheet 1 taken from its back side and not to acquire an image taken from its front side, the acquisition unit 1621 may acquire only the image for individual identification of the PTP sheet 1 to be collated taken from its back side. Further, when the acquisition unit 1611 acquires images of the PTP sheet 1 taken from both its front side and back side, the acquisition unit 1621 acquires images for individual identification of the PTP sheet 1 to be collated taken from both its front side and back side.

[0068] Next, the generation unit 1622 of the collation unit 162 will be described in detail.

[0069] First, the generation unit 1622 generates a normalized image (normalized image) from the image for individual identification acquired by the acquisition unit 1621 in the same manner as the generation unit 1612. Next, the generation unit 1622 generates a collation image from the normalized image in the same manner as the generation unit 1612.

[0070] Next, the determination unit 1623 of the collation unit 162 will be described in detail.

[0071] The determination unit 1623 collates the collation image generated by the generation unit 1622 with the registered image stored in the individual identification information DB 152. The specific method for collating the two images is arbitrary. For example, the two images themselves may be compared, or the feature amounts obtained by performing some conversion on the two images may be compared. For example, the frequency spectrum images obtained by performing frequency conversion such as Fourier transform on each of the two images may be compared. Alternatively, each of the two images may be first converted into a frequency spectrum image by performing frequency conversion such as Fourier transform, and then the polar coordinate images (Fourier-Mellin feature images) obtained by performing polar coordinate conversion or logarithmic polar coordinate conversion on the frequency spectrum image may be compared. Alternatively, each of the two images may be first converted into a frequency spectrum image by performing frequency conversion such as Fourier transform, then converted into Fourier-Mellin features by performing polar coordinate conversion or logarithmic polar coordinate conversion on the frequency spectrum image, and further, the phase images obtained by performing frequency conversion such as Fourier transform on the Fourier-Mellin features may be compared. Hereinafter, an example of the collation method performed by the determination unit 1623 will be described.

[0072] FIG. 14 is a flowchart showing an example of a process in which the determination unit 1623 collates a collation image and a registered image. Referring to FIG. 14, the determination unit 1623 first performs a discrete Fourier transform on the collation image and the registered image to obtain a frequency spectrum image of the collation image and a frequency spectrum image of the registered image (step S20). When there are a plurality of registered images, the determination unit 1623 obtains a frequency spectrum image from each of the registered images. Next, the determination unit 1623 calculates a normalized cross-power spectrum between the frequency spectrum image of the collation image and the frequency spectrum image of the registered image for each registered image (step S21). Next, the determination unit 1623 performs an inverse Fourier transform on the normalized cross-power spectrum for each registered image to calculate a correlation coefficient map (step S22). Next, the determination unit 1623 calculates a score indicating the similarity between the collation image and the registered image from the correlation coefficient map for each registered image (step S23). Next, the determination unit 1623 collates the collation image and the registered image based on the scores calculated for each registered image (step S24). For example, if the best score among the plurality of scores calculated for each registered image is equal to or greater than a predetermined threshold value, the determination unit 1623 determines that the collation image matches (is identical to) the registered image that achieved the best score. That is, the determination unit 1623 determines that the PTP sheet related to the collation image is the same individual as the PTP sheet related to the registered image that achieved the best score. On the other hand, if the best score is less than the threshold value, the determination unit 1623 determines that the collation image does not match (is not identical to) any of the registered images. That is, the determination unit 1623 determines that the PTP sheet related to the collation image is not the same individual as any of the PTP sheets related to the registered images.

[0073] Subsequently, a modified example of this embodiment will be described.

[0074] In the above description, the acquisition unit 1611 acquired an image of the PTP sheet 1 after being punched out in sheet units in the manufacturing process of the PTP sheet 1 by the PTP packaging machine. However, the acquisition unit 1611 may acquire, as a registration image of the PTP sheet 1, an image obtained by imaging a sheet planned site that will ultimately become the PTP sheet 1 before being punched out in the manufacturing process of the PTP sheet 1 by the PTP packaging machine.

[0075] Also, in the above description, one PTP management device 100 included the registration unit 161 and the verification unit 162. However, there may be a PTP management device that includes the registration unit 161 but does not include the verification unit 162, or a PTP management device that includes the verification unit 162 but does not include the registration unit 161.

[0076] Also, instead of storing the registration image, the individual identification information DB 152 may store, as the registration image, a frequency spectrum image obtained by frequency-converting the registration image.

[0077] [Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIG. 15. FIG. 15 is a block diagram of a PTP management system 200 in the present embodiment. The PTP management system 200 is a system for managing individuals of PTP sheets. The PTP sheet accommodates contents in a pocket portion of a transparent or translucent container film composed of a pocket portion having a plurality of openings provided on one surface and a flange portion provided at the periphery of the pocket portion and constituting one surface. Further, the PTP sheet has a structure in which a breakable cover film having a predetermined printing portion formed on at least one surface is thermally adhered to the flange portion to seal the pocket portion.

[0078] Referring to FIG. 15, the PTP management system 200 includes an acquisition means 201 and a generation means 202.

[0079] The acquisition means 201 is configured to acquire an image including an image of the printing portion and a grid pattern formed on the cover film during heat adhesion by photographing the PTP sheet with a camera from the opening side or the protruding side of the pocket portion where the printing portion is formed. The acquisition means 201 can be configured in the same manner as, for example, the acquisition unit 1611 or the acquisition unit 1621 in FIG. 5, but is not limited thereto.

[0080] The generation means 202 is configured to generate an individual identification image used for identifying the PTP sheet from the image acquired by the acquisition means 201. The generation means 202 can be configured in the same manner as, for example, the generation unit 1612 or the generation unit 1622 in FIG. 5, but is not limited thereto.

[0081] The PTP management system 200 configured as described above operates as follows. That is, the acquisition means 201 acquires an image including an image of the printing portion and a grid pattern formed on the cover film during heat adhesion by photographing the PTP sheet with a camera from the opening side or the protruding side of the pocket portion where the printing portion is formed. Next, the generation means 202 generates an individual identification image used for identifying the PTP sheet from the image acquired by the acquisition means 201.

[0082] The PTP management system 200 according to the present embodiment is configured and operates as described above, so that individual identification of the PTP sheet can be performed without requiring high-resolution photographing means. The reason is that an image including the printing portion and the grid pattern, which is not the same for all individuals of the PTP sheet and varies between individuals, is used as the image for individual identification.

[0083] Although the present invention has been described with reference to the above embodiments, the present invention is not limited to the above-described embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

Industrial Applicability

[0084] The present invention can be used for authenticity determination and individual identification of PTP sheets.

[0085] Some or all of the above embodiments may be described as follows in the appended claims, but are not limited thereto. [Appendix 1] A system for managing individuals of a PTP sheet in which contents are accommodated in a pocket portion of a transparent or translucent container film including a pocket portion having a plurality of openings provided on one surface and a flange portion provided on the periphery of the pocket portion and constituting the one surface, and a breakable cover film having a predetermined printing portion formed on at least one surface is heat-bonded with the flange portion to seal the pocket portion, comprising: An acquisition unit that acquires an image including an image of the printing portion and a lattice pattern formed on the cover film during heat bonding by photographing the PTP sheet with a camera from the opening side or the protruding side of the pocket portion where the printing portion is formed; A generation unit that generates an individual identification image used for identifying the PTP sheet from the acquired image; A PTP management system comprising: [Appendix 2] The PTP management system according to Appendix 1, further comprising an illumination unit that irradiates the PTP sheet with light at an elevation angle equal to or greater than a predetermined elevation angle. The PTP management system according to Appendix 1. [Appendix 3] The illumination unit includes dome illumination. The PTP management system according to Appendix 2. [Appendix 4] The illumination unit further includes coaxial epi-illumination. The PTP management system according to Appendix 3. [Appendix 5] The illumination unit further includes ring illumination provided between the dome illumination and the PTP sheet and being in an off state during the photographing. The PTP management system according to Appendix 3 or 4. [Appendix 6] The ring illumination is in an on state when the camera photographs an appearance inspection image of the PTP sheet. The PTP management system described in Supplementary Note 5. [Supplementary Note 7] The PTP management system further includes an illumination adjustment unit that photographs an image of the grid pattern of the PTP sheet with the camera while changing the distance between the PTP sheet and the dome illumination, and determines the distance at which a grid pattern with a desired image sharpness is obtained. The PTP management system according to any one of Supplementary Notes 3 to 6. [Supplementary Note 8] The PTP management system further includes a collation unit that collates the individual identification image with the individual identification image of the PTP sheet acquired in advance and stored in advance. The PTP management system according to any one of Supplementary Notes 1 to 7. [Supplementary Note 9] A method for managing individuals of a PTP sheet in which contents are stored in the pocket portion of a transparent or translucent container film composed of a pocket portion having a plurality of openings provided on one surface and a flange portion provided on the periphery of the pocket portion and constituting the one surface, and a breakable cover film having a predetermined printing portion formed on at least one surface is thermally adhered with the flange portion to seal the pocket portion, the method comprising: By photographing the PTP sheet with a camera from the opening side or the protruding side of the pocket portion on which the printing portion is formed, an image including an image of the printing portion and a grid pattern formed on the cover film during thermal adhesion is acquired. Generating an individual identification image used for identifying the PTP sheet from the acquired image. PTP management method. [Supplementary Note 10] Performing the photographing with the PTP sheet irradiated with light at an elevation angle of a predetermined elevation angle or more. The PTP management method according to Supplementary Note 9. [Supplementary Note 11] The irradiation of the light is performed by dome illumination. The PTP management method according to Supplementary Note 10. [Supplementary Note 12] The irradiation of the light is further performed by coaxial epi-illumination. The PTP management method according to Supplementary Note 11. [Appendix 13] A ring light that is in an off state during the shooting is provided between the dome illumination and the PTP sheet. The PTP management method according to Appendix 11 or 12. [Appendix 14] The ring light is turned on when the camera captures an image for inspecting the appearance of the PTP sheet. The PTP management method according to Appendix 13. [Appendix 15] Before the shooting, while changing the distance between the PTP sheet and the dome illumination, the camera captures an image of the lattice pattern of the PTP sheet, and determines the distance at which a lattice pattern with a desired image sharpness can be obtained. The PTP management method according to any one of Appendices 11 to 14. [Appendix 16] The individual identification image is compared with the individual identification image of the PTP sheet that was acquired in advance and stored in advance. The PTP management method according to any one of Appendices 9 to 15. [Appendix 17] Contents are stored in the pocket portion of a transparent or translucent container film composed of a pocket portion having a plurality of openings provided on one surface and a flange portion provided on the periphery of the pocket portion and constituting the one surface. A computer that manages individuals of PTP sheets in which a breakable cover film having a predetermined printing portion formed on at least one surface is thermally adhered to the flange portion to seal the pocket portion, By photographing the PTP sheet with a camera from the opening side or the protruding side of the pocket portion where the printing portion is formed, a process of acquiring an image including an image of the printing portion and a lattice pattern formed on the cover film during thermal adhesion, A process of generating an individual identification image used for identifying the PTP sheet from the acquired image, A computer-readable recording medium recording a program for causing the above to be performed. [Appendix 18] An illumination device for photographing a PTP sheet with a camera, dome illumination for irradiating the PTP sheet with light at an elevation angle equal to or greater than a predetermined elevation angle, coaxial epi-illumination provided between the dome illumination and the camera, ring illumination provided between the dome illumination and the PTP sheet, which is turned off when photographing an individual identification image of the PTP sheet and turned on when photographing an appearance inspection image of the PTP sheet, and an illumination device comprising the same.

Explanation of reference numerals

[0086] 1 PTP sheet 11 - 12 long side portions 13 - 14 short side portions 15 pocket portion 16 tablets 17 container film 18 horizontal slit 19 cover film 20 printing portion 21 lattice pattern 22 printing portion 30 dome illumination 31 dome 32 white light source 33a opening 33b camera hole 34 member 40 coaxial epi-illumination 41 case 42 white light source 43 half mirror 44a, 44b openings 50 ring illumination 51 case 52 white light source 60 illumination adjustment portion 70 elevating portion 71 arm portion 72 guide portion 100 PTP management device 110 camera 120 communication I / F portion 130 operation input portion 140 Screen display unit 150 Memory unit 151 Program 152 Individual identification information DB 160 Arithmetic processing unit 161 Registration unit 1611 Acquisition unit 1612 Generation unit 162 Verification unit 1621 Acquisition unit 1622 Generation unit 1623 Judgment unit 170 Lighting unit

Claims

1. A system for managing individual PTP sheets, which comprises accommodating contents in the pocket portion of a container film consisting of a pocket portion having a plurality of openings provided on one surface and a flange portion provided at the periphery of the pocket portion and constituting the one surface, and sealing the pocket portion by adhering a breakable cover film having a predetermined printing portion formed on at least one surface to the flange portion, wherein: an acquisition unit that acquires an image including an image of the printing portion and a lattice pattern formed on the cover film during adhesion by photographing the PTP sheet with a camera from the opening side or the protruding portion side of the pocket portion where the printing portion is formed; a generation unit that generates an individual identification image used for identifying the PTP sheet from the acquired image; A PTP management system comprising the above.

2. The PTP management system according to claim 1, further comprising an illumination unit that irradiates the PTP sheet with light at an elevation angle of a predetermined elevation angle or more. The PTP management system according to claim 1.

3. The illumination unit comprises dome illumination. The PTP management system according to claim 2.

4. The illumination unit further comprises coaxial epi-illumination. The PTP management system according to claim 3.

5. The illumination unit further comprises a ring illumination provided between the dome illumination and the PTP sheet and being in an off state during the photographing. The PTP management system according to claim 3 or 4.

6. The ring illumination is in an on state when the camera photographs an appearance inspection image of the PTP sheet. The PTP management system according to claim 5.

7. The PTP management system according to any one of claims 1 to 6, further comprising a collation unit that collates the individual identification image with an individual identification image of the PTP sheet acquired in advance and stored in advance. The PTP management system according to any one of claims 1 to 6.

8. A method for managing an individual of a PTP sheet, which comprises accommodating contents in the pocket portion of a container film consisting of a pocket portion having a plurality of openings provided on one surface and a flange portion provided at the periphery of the pocket portion and constituting the one surface, and sealing the pocket portion by adhering a breakable cover film having a predetermined printing portion formed on at least one surface to the flange portion, wherein: The PTP sheet is photographed by a camera from the opening side or the protruding side of the pocket part where the printing part is formed, thereby obtaining an image including an image of the printing part and a lattice pattern formed on the cover film during adhesion. An individual identification image used for identifying the PTP sheet is generated from the obtained image. A PTP management method.

9. In a computer that manages an individual of a PTP sheet in which contents are stored in a pocket part of a container film including a pocket part having a plurality of openings provided on one surface and a flange part provided on the periphery of the pocket part and constituting the one surface, and a breakable cover film having a predetermined printing part formed on at least one surface is adhered by the flange part to seal the pocket part. A process of obtaining an image including an image of the printing part and a lattice pattern formed on the cover film during adhesion by photographing the PTP sheet with a camera from the opening side or the protruding side of the pocket part where the printing part is formed. A process of generating an individual identification image used for identifying the PTP sheet from the obtained image. A program for causing the above to be performed.

Images