The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:
The information recording medium supply apparatus according to the present invention will now be described in detail by embodiments with reference to the accompanying drawings. In each embodiment, members having the same structures and functions are assigned the same reference numerals and symbols, and their explanations will be omitted in subsequent embodiments.
As shown in
The feeder 11 is provided with a sheet feeding plate 21, and feeds the sheets S, one by one, from the sheet feeding plate 21 to the lithographic printing unit 12 via a swing arm shaft pregripper (not shown) provided at the leading end of the sheet feeding plate 21.
The lithographic printing unit 12 is provided with a first impression cylinder 23 which receives the sheet S fed from the sheet feeding plate 21. A first blanket cylinder 24 contacts the first impression cylinder 23 downstream of the sheet feeding plate 21 in the rotating direction of the first impression cylinder 23. A first lithographic plate cylinder 25 contacts the first blanket cylinder 24 upstream of the first impression cylinder 23 in the rotating direction of the first blanket cylinder 24. That is, the point of contact between the first impression cylinder 23 and the first blanket cylinder 24 serves as the first point of lithographic printing. A transfer cylinder 26 contacts the first impression cylinder 23 downstream of the first blanket cylinder 24 in the rotating direction of the first impression cylinder 23.
A second impression cylinder 27 contacts the transfer cylinder 26. A second blanket cylinder 28 contacts the second impression cylinder 27 downstream of the transfer cylinder 26 in the rotating direction of the second impression cylinder 27. A second lithographic plate cylinder 29 contacts the second blanket cylinder 28 upstream of the second impression cylinder 27 in the rotating direction of the second blanket cylinder 28. That is, the point of contact between the second impression cylinder 27 and the second blanket cylinder 28 serves as the second point of lithographic printing. A transfer cylinder 30 contacts the second impression cylinder 27 down stream of the second blanket cylinder 28 in the rotating direction of the second impression cylinder 27.
The plate surface of each of the lithographic plate cylinders 25 and 29 has image areas and non-image areas nearly flush with each other, the image areas being lipophilic and the non-image areas being hydrophilic. Thus, ink (liquid) is transferred by making use of the nature by virtue of which an oil and water repel each other. First, water is given to the plate surface to apply water to the non-image areas. Then, ink is applied, whereupon the ink repels the water and does not adhere to the non-image areas, but adheres only to the image areas. Transfer of the ink in the image areas can result in printing. Thus, the lithographic printing unit 12, configured as above, prints one surface of the sheet S being transported.
In the reversing unit 13, an attraction cylinder 31 in contact with the transfer cylinder 30 is provided, and a reversing cylinder 32 contacts the attraction cylinder 31 downstream of the transfer cylinder 30 in the rotating direction of the attraction cylinder 31. A transfer cylinder 33 contacts the reversing cylinder 32 downstream of the attraction cylinder 31 in the rotating direction of the reversing cylinder 32. As shown in
Here, the actions of the reversing unit 13 during single-sided printing and double-sided printing will be described. As shown in
As shown in
In the gravure printing unit 14, an impression cylinder 34 in contact with the transfer cylinder 33 is provided. A gravure plate cylinder (intaglio plate cylinder) 35 contacts the impression cylinder 34 downstream of the transfer cylinder 33 in the rotating direction of the impression cylinder 34. That is, the point of contact between the impression cylinder 34 and the gravure plate cylinder 35 serves as the point of gravure printing. The plate surface of the gravure plate cylinder 35 has non-image areas 35a forming the outermost plane of the plate surface, and recessed image areas (recessed portion) 35b, which are lower in height than the non-image areas 35a (see
An ink roller 36 contacts the gravure plate cylinder 35 downstream of the impression cylinder 34 in the rotating direction of the gravure plate cylinder 35. A lower side of the ink roller 36 is immersed in an ink reservoir 37 where ink (liquid) is stored inside. The ink roller 36 and the ink reservoir 37 constitute a liquid supply means. A doctor (surplus liquid removal means) 38 contacts the gravure plate cylinder 35 downstream of the ink roller 36 in the rotating direction of the gravure plate cylinder 35 and upstream of the impression cylinder 34 in the rotating direction of the gravure plate cylinder 35. The doctor 38 removes surplus ink deposited on the non-image areas 35a of the gravure plate cylinder 35. Moreover, an IC chip supply device (medium supply means) 50 contacts the gravure plate cylinder 35 downstream of the doctor 38 in the rotating direction of the gravure plate cylinder 35, and upstream of the impression cylinder 34 in the rotating direction of the gravure plate cylinder 35. The IC chip supply device 50 supplies an IC chip (information recording medium) where printing information, product information, etc. on the sheet S are recorded. Thus, the gravure printing unit 14, which has the above-described features, applies printing to the one surface or the other surface of the sheet S being transported.
The printing information or product information recorded on the IC chip refers, for example, to an encryption which identifies whether a sheet S after completion of printing, if it is a security such as a banknote or a gift certificate, is fake or real; or to a producer, an agricultural chemical, history of production and distribution processes, and so on if the sheet S is a price tag on a food product.
In the delivery unit 15, a pair of sprockets 39a and 39b are provided. The sprocket 39a contacts the impression cylinder 34, and a delivery chain 40 is looped between the sprockets 39a and 39b. A plurality of gripper bars (not shown) for receiving the sheet S from the impression cylinder 34 are mounted on the delivery chain 40 at predetermined intervals along the travel direction of the delivery chain 40. Upon travel of the delivery chain 40, the sheet S is delivered downwardly of the delivery chain 40.
Next, the information recording medium supply apparatus will be described using
As shown in
That is, when the cam drive motor 54 is driven to rotate the cam 55, the transport path 51 has its leading end swung in a vertical direction about the pin 56. As a result, the IC chip is oscillated, dispatched from the IC chip storage into the transport path 51, and then moved toward the leading end of the transport path 51.
As described above, the IC chip supply device (medium supply means) 50 is composed of the transport path 51, the upper plate 52, the lower plate 53, the cam drive motor 54, the cam 55, the pin 56, and the support member 57. Of these constituents, the cam drive motor 54, the cam 55, the pin 56, and the support member 57 constitute oscillation means.
Because of the above-described features, therefore, when the IC chip is to be embedded in the same surface as the one surface of the sheet S where lithographic printing has been done (in the case of single-sided printing), the sheet S fed to the sheet feeding plate 21 is passed on to the first impression cylinder 23 via the swing arm shaft pregripper. Then, the sheet S is supplied between the first impression cylinder 23 and the first blanket cylinder 24. At this time, the ink is transferred from the first lithographic plate cylinder 25 to the sheet S via the first blanket cylinder 24, whereby first lithographic printing is done on the one surface of the sheet S.
Further, the sheet S subjected to the first lithographic printing is passed on to the second impression cylinder 27 via the transfer cylinder 26, and then supplied between the second impression cylinder 27 and the second blanket cylinder 28. At this time, the ink is transferred from the second lithographic plate cylinder 29 to the sheet S via the second blanket cylinder 28, whereby second lithographic printing is done on the one surface of the sheet S.
The sheet S subjected to the second lithographic printing is passed on to the attraction cylinder 31 via the transfer cylinder 30, and then supplied between the attraction cylinder 31 and the reversing cylinder 32. Here, the sheet S is reversed by the reversing unit 13, and the reversed sheet S is transported, with the one surface thereof being pointed outward on the reversing cylinder 32. Then, the sheet S is passed on to the impression cylinder 34 via the transfer cylinder 33, and supplied between the impression cylinder 34 and the gravure plate cylinder 35.
The ink stored in the ink reservoir 37 is supplied to the gravure plate cylinder 35 via the ink roller 36. Surplus ink adhering to the non-image areas 35a of the gravure plate cylinder 35 is removed by the doctor 38, so that only the ink within the image areas 35b of the gravure plate cylinder 35 remains.
When, at the same time, the cam drive motor 54 is driven to rotate the cam 55, the transport path 51 is swung about the pin 56 in the vertical direction by a high portion and a low portion formed in the cam surface. Owing to oscillations due to the swing motion, the IC chip is sent out of the IC chip storage into the transport path 51, and then moved toward the leading end of the transport path 51. The IC chip transported to the leading end of the transport path 51 contacts the non-image area 35a of the gravure plate cylinder 35, and slides on the circumferential surface of the non-image area 35a. Then, this IC chip contacts the image area 35b being rotated, and adheres (sticks) to the surface of the ink because of the viscosity of the ink stored within the image area 35b. Then, the IC chip, while adhering to the surface of the ink, is discharged through the clearance at the leading end of the upper plate 52, and transported to a site between the gravure plate cylinder 35 and the impression cylinder 34.
Then, the IC chip adhering to the surface of the ink moves (transfers) to the sheet S, together with the ink stored within the image area 35b, at the site between the impression cylinder 34 and the gravure plate cylinder 35. That is, the ink is transferred from the image area 35b of the gravure plate cylinder 35 to the one surface of the sheet S held on the impression cylinder 34, whereby gravure printing on, and embedding of the IC chip into, the one surface of the sheet S are carried out. On this occasion, the ink stored within the image area 35b of the gravure plate cylinder 35 is transferred to the sheet S in such a manner as to wrap the IC chip in. The sheet S, where gravure printing and embedding of the IC chip have been performed, is passed on to the delivery chain 40, and then delivered.
When the IC chip is to be embedded in the other surface of the sheet S on the side opposite to the one surface thereof subjected to lithographic printing (in the case of double-sided printing), on the other hand, the sheet S supplied between the attraction cylinder 31 and the reversing cylinder 32 is not reversed in the reversing unit 13. That is, the sheet S is not reversed by the reversing unit 13, but is transported, with the other surface thereof being pointed outward on the reversing cylinder 32, and is then passed on to the impression cylinder 34 via the transfer cylinder 33.
Then, the IC chip adhering to the surface of the ink moves (transfers) to the sheet S, together with the ink stored within the image area 35b, at the site between the impression cylinder 34 and the gravure plate cylinder 35. That is, the ink is transferred from the image area 35b of the gravure plate cylinder 35 to the other surface of the sheet S held on the impression cylinder 34, whereby gravure printing on, and embedding of the IC chip into, the other surface of the sheet S are carried out. On this occasion, the ink stored within the image area 35b of the gravure plate cylinder 35 is transferred to the sheet S in such a manner as to wrap the IC chip in. The sheet S, where gravure printing and embedding of the IC chip have been performed, is passed on to the delivery chain 40, and then delivered.
Thus, according to the information recording medium supply apparatus concerned with the present invention, the IC chip can be embedded in the sheet S efficiently. Moreover, embedding of the IC chip can be performed simultaneously with ink transfer to the sheet S. Thus, there is no need to add anew a step for embedding the IC chip, and a printing product provided with the IC chip can be completed in one pass. Furthermore, the IC chip is disposed within the ink, thus making it difficult to determine whether the IC chip is present or absent, and making it possible to produce a printing product having a high degree of forgery preventing function.
As shown in
A pair of drive rollers 64a and 64b are provided below the lower plate 63, and a roller drive motor 65 is connected to the drive roller 64b. A grooved belt (transport belt) 66 is looped between the drive rollers 64a and 64b, and a plurality of grooves (engagement portions) 66a are formed on the outside of the grooved belt 66. The upper part of the grooved belt 66 located between the drive rollers 64a and 64b is disposed in a groove (not shown) of the lower plate 63 which is formed in the extending direction of the transport path 61. A rotary encoder (detection means) 67 is connected to the gravure plate cylinder 35.
As described above, the IC chip supply device (medium supply means) 60 is composed of the transport path 61, the upper plate 62, the lower plate 63, the drive rollers 64a, 64b, the roller drive motor 65, the grooved belt 66, the grooves 66a, and the rotary encoder 67. Of these constituents, the drive rollers 64a, 64b, the roller drive motor 65, the grooved belt 66, and the grooves 66a constitute push-out means.
Because of the above-described features, therefore, when the roller drive motor 65 is driven to drive the drive rollers 64a, 64b, the grooved belt 66 is rotated counterclockwise. In accordance with this motion, the IC chips, which have been moved from the IC chip storage, are fitted, one by one, into the grooves 66a of the grooved belt 66, and then moved toward the leading end of the transport path 61. The rotation angle of the image area 35b of the gravure plate cylinder 35 is detected by the rotary encoder 67, and the grooved belt 66 is intermittently driven by the roller drive motor 65 in timed relationship with the image area 35b being rotated. By so doing, the IC chip is pushed out into the ink stored within the image area 35b. Then, the IC chip within the ink moves (transfers) to the sheet S, together with the ink stored within the image area 35b, at the site between the impression cylinder 34 and the gravure plate cylinder 35.
Thus, according to the information recording medium supply apparatus concerned with the present invention, the IC chip can be embedded in the sheet S efficiently. Moreover, embedding of the IC chip can be performed simultaneously with ink transfer to the sheet S. Thus, there is no need to add anew a step for embedding the IC chip, and a printing product provided with the IC chip can be completed in one pass. Furthermore, the IC chip is disposed within the ink, thus making it difficult to determine whether the IC chip is present or absent, and making it possible to produce a printing product having a high degree of forgery preventing function.
As shown in
As described above, the IC chip supply device (medium supply means) 70 is composed of the transport path 71, the upper plate 72, the lower plate 73, the air cylinder 74, and the rod portion 74a. Of these constituents, the air cylinder 74 and the rod portion 74 a constitute push-out means.
Because of the above-described features, therefore, the rotation angle of the image area 35b of the gravure plate cylinder 35 is detected by a rotary encoder 67, and the air cylinder 74 is actuated in timed relationship with the image area 35b being rotated, thereby extending the rod portion 74a. By so doing, the IC chip is pushed out into the ink stored within the image area 35b. Then, the IC chip within the ink moves (transfers) to the sheet S, together with the ink stored within the image area 35b, at the site between the impression cylinder 34 and the gravure plate cylinder 35. It is permissible to operate the air cylinder 74 such that the rod portion 74a always pushes the IC chip at a constant pressure.
Thus, according to the information recording medium supply apparatus concerned with the present invention, the IC chip can be embedded in the sheet S efficiently. Moreover, embedding of the IC chip can be performed simultaneously with ink transfer to the sheet S. Thus, there is no need to add anew a step for embedding the IC chip, and a printing product provided with the IC chip can be completed in one pass. Furthermore, the IC chip is disposed within the ink, thus making it difficult to determine whether the IC chip is present or absent, and making it possible to produce a printing product having a high degree of forgery preventing function.
As shown in
A transport guide 84 extending between the IC chip storage and the gravure plate cylinder 35 is provided below the lower part of the adhesive belt 83 located between the drive rollers 81. The transport guide 84 is disposed to be spaced from the adhesive belt 83 by a clearance of the length of nearly one IC chip. A chip guide (push-in means) 85 formed of an elastic body is provided above a position where the gravure plate cylinder 35 and the adhesive belt 83 oppose each other. The chip guide 85 extends from the adhesive belt 83 up to the gravure plate cylinder 35, and is formed to be spaced from the gravure plate cylinder 35 by a clearance decreasing as the chip guide 85 approaches the gravure plate cylinder 35.
As described above, the IC chip supply device (medium supply means) 80 is composed of the drive rollers 81, the roller drive motor 82, the adhesive belt 83, the transport guide 84, and the chip guide 85. Of these constituents, the drive rollers 81 and the roller drive motor 82 constitute adhesive belt moving means.
Because of the above-described features, when the roller drive motor 82 is driven to drive the drive rollers 81, the adhesive belt 83 rotates (moves) clockwise. In accordance with this motion, the IC chip, which has moved from the IC chip storage, moves toward the gravure plate cylinder 35 along the transport guide 84 while being stuck under the adhesive force of the adhesive belt 83. Upon contact with the image area 35b being rotated, the IC chip adheres to the surface of the ink because of the viscosity of the ink stored in the image area 35b (the ink has higher viscosity than the adhesive force of the adhesive belt 83). Then, the IC chip adhering to the surface of the ink is transported to be brought into contact with the chip guide 85, and gradually pushed into the ink. Then, the IC chip within the ink moves (transfers) to the sheet S, together with the ink stored within the image area 35b, at the site between the impression cylinder 34 and the gravure plate cylinder 35.
Thus, according to the information recording medium supply apparatus concerned with the present invention, the IC chip can be embedded in the sheet S efficiently. Moreover, embedding of the IC chip can be performed simultaneously with ink transfer to the sheet S. Thus, there is no need to add anew a step for embedding the IC chip, and a printing product provided with the IC chip can be completed in one pass. Furthermore, the IC chip is disposed within the ink, thus making it difficult to determine whether the IC chip is present or absent, and making it possible to produce a printing product having a high degree of forgery preventing function.
As shown in
A transport guide 92 extending between the IC chip storage and the gravure plate cylinder 35 is provided above the upper part of the charged belt 91 located between the drive rollers 94. The transport guide 92 is disposed to be separated from the charged belt 91 by a clearance of the length of nearly one IC chip. A chip guide (push-in means) 93 formed of an elastic body is provided at the leading end of the transport guide 92. The chip guide 93 extends from the charged belt 91 up to the gravure plate cylinder 35, and is formed to be spaced from the gravure plate cylinder 35 by a clearance decreasing as the chip guide 93 approaches the gravure plate cylinder 35.
As described above, the IC chip supply device (medium supply means) 90 is composed of the charged belt 91, the transport guide 92, the chip guide 93, the drive rollers 94, and the roller drive motor 95. Of these constituents, the drive rollers 94 and the roller drive motor 95 constitute charged belt moving means.
Because of the above-described features, when the roller drive motor 95 is driven to drive the drive rollers 94, the charged belt 91 rotates (moves) counterclockwise. In accordance with this motion, the IC chip, which has moved from the IC chip storage (not shown), moves toward the gravure plate cylinder 35 along the transport guide 92 while being attracted by the static electricity of the charged belt 91. Upon contact with the image area 35b being rotated, the IC chip adheres to the surface of the ink because of the viscosity of the ink stored within the image area 35b (the ink has higher viscosity than the static electricity of the charged belt 91). Then, the IC chip adhering to the surface of the ink is transported to be brought into contact with the chip guide 93, and gradually pushed into the ink. Then, the IC chip within the ink moves (transfers) to the sheet S, together with the ink stored within the image area 35b, at the site between the impression cylinder 34 and the gravure plate cylinder 35.
Thus, according to the information recording medium supply apparatus concerned with the present invention, the IC chip can be embedded in the sheet S efficiently. Moreover, embedding of the IC chip can be performed simultaneously with ink transfer to the sheet S. Thus, there is no need to add anew a step for embedding the IC chip, and a printing product provided with the IC chip can be completed in one pass. Furthermore, the IC chip is disposed within the ink, thus making it difficult to determine whether the IC chip is present or absent, and making it possible to produce a printing product having a high degree of forgery preventing function.
With the IC chip supply devices 50, 60, 70, 80 and 90 of Embodiments 1 to 5, the IC chip is embedded simultaneously with gravure printing (intaglio printing) after lithographic printing. However, gravure printing (intaglio printing) may be combined not with lithographic printing, but with other printing method, for example, intaglio printing, which is the same printing method, stencil printing, or relief printing.
A combination with relief printing, as shown in
As shown in
An impression cylinder 102, which receives the sheet S fed from a sheet feeding plate 21 via, a swing arm shaft pregripper (not shown), is provided in the numbering unit 16. A relief plate cylinder 103 contacts the impression cylinder 102 downstream of the sheet feeding plate 21 in the rotating direction of the impression cylinder 102. That is, the point of contact between the impression cylinder 102 and the relief plate cylinder 103 serves as the point of relief printing. A transfer cylinder 104 contacts the impression cylinder 102 downstream of the relief plate cylinder 103 in the rotating direction of the impression cylinder 102. The plate surface of the relief plate cylinder 103 has image areas where ink deposits, and non-image areas which are lower in height than the image areas and on which no ink deposits. This plate surface is intended for printing of serial numbers (numerals) on the sheets transported sequentially, and printing types for these serial numbers are formed in the image areas.
The drying unit 17 is provided with UV lamps 105a, 105b and 105c which oppose the upper circumferential surface of an attraction cylinder 31 and which are arranged in parallel. That is, the UV lamps 105a, 105b and 105c throw ultraviolet rays from above the attraction cylinder 31 toward the upper circumferential surface of the attraction cylinder 31 to dry ink on one surface of the sheet S attracted to the attraction cylinder 31.
Because of the above-described features, therefore, when the IC chip is to be embedded in the one surface of the sheet S (in the case of single-sided printing), the sheet S fed to the sheet feeding plate 21 is passed on to the impression cylinder 102 via the swing arm shaft pregripper. Then, the sheet S is supplied between the impression cylinder 102 and the relief plate cylinder 103. Since the ink is transferred to the sheet S thereby, relief printing is done on the one surface of the sheet S.
The sheet S subjected to the relief printing is passed on to the attraction cylinder 31 via the transfer cylinder 104, and has the one surface thereof dried by irradiation from the UV lamps 105a, 105b and 105c. Then, the dried sheet S is supplied between the attraction cylinder 31 and a reversing cylinder 32. Here, the sheet S is reversed by the reversing unit 13, and the reversed sheet S is transported, with the one surface thereof being pointed outward on the reversing cylinder 32. Then, the sheet S is passed on to an impression cylinder 34 via a transfer cylinder 33. The sheet S passed on to the impression cylinder 34 is supplied between the impression cylinder 34 and a gravure plate cylinder 35.
Ink stored in an ink reservoir 37 is supplied to the gravure plate cylinder 35 via an ink roller 36. Surplus ink adhering to non-image areas 35a of the gravure plate cylinder 35 is removed by a doctor 38, so that only the ink within image areas 35b of the gravure plate cylinder 35 remains. Then, an IC chip is supplied to the ink within the image area 35b by the action of the aforementioned IC chip supply device 50, 60, 70, 80 or 90.
Then, the IC chip supplied to the ink moves (transfers) to the sheet S, together with the ink stored within the image area 35b, at the site between the impression cylinder 34 and the gravure plate cylinder 35. That is, the ink is transferred from the image area 35b of the gravure plate cylinder 35 to the one surface of the sheet S held on the impression cylinder 34, whereby gravure printing on, and embedding of the IC chip into, the one surface of the sheet S are carried out. On this occasion, the ink stored in the image area 35b of the gravure plate cylinder 35 is transferred to the sheet S in such a manner as to wrap the IC chip in. The sheet S, where gravure printing and embedding of the IC chip have been performed, is passed on to a delivery chain 40, and then delivered.
When the IC chip is to be embedded in the other surface of the sheet S (in the case of double-sided printing), on the other hand, the sheet S supplied between the attraction cylinder 31 and the reversing cylinder 32 is not reversed in the reversing unit 13. That is, the sheet S is not reversed by the reversing unit 13, but the other surface thereof on the side opposite to the one surface is pointed outward on the reversing cylinder 32, and is then passed on to the impression cylinder 34 via the transfer cylinder 33.
Then, the IC chip supplied to the ink moves (transfers) to the sheet S, together with the ink stored within the image area 35b, at the site between the impression cylinder 34 and the gravure plate cylinder 35. That is, the ink is transferred from the image area 35b of the gravure plate cylinder 35 to the other surface of the sheet S held on the impression cylinder 34, whereby gravure printing on, and embedding of the IC chip into, the other surface of the sheet S are carried out. On this occasion, the ink stored within the image area 35b of the gravure plate cylinder 35 is transferred to the sheet S in such a manner as to wrap the IC chip in. The sheet S, where gravure printing and embedding of the IC chip have been performed, is passed on to the delivery chain 40, and then delivered.
Accordingly, even the combination with relief printing enables the IC chip to be embedded in the sheet S efficiently.
With the sheet-fed rotary press 1 or 2 equipped with the IC chip supply device 50, 60, 70, 80 or 90 according to the present invention, the lithographic printing unit 12 or the numbering unit 16 is disposed upstream of the gravure printing unit 14 in the sheet transport direction. Thus, the embedded IC chip is not destroyed. That is, if the sheet S subjected to gravure printing undergoes lithographic printing or relief printing, there is a possibility for destruction of the IC chip embedded in the sheet S. According to the present invention, by contrast, gravure printing, which involves embedding of the IC chip, is performed after lithographic printing or relief printing. Hence, the destruction of the embedded IC chip can be prevented.
Furthermore, even when a sheet-fed rotary press 3 is equipped with a feeder 11, a gravure printing unit 14, and a delivery unit 15 to do only gravure printing on the sheet S, as shown in
The information recording medium supply apparatus of the present invention is applicable to a coating machine which forms a coating of a synthetic resin or the like on a surface of paper.
The invention thus described, it will be obvious that the same may be varied in many ways. In the above embodiments, the IC chip is used as the information recording medium, but an IC tag can be used. Also, the ink is used as the liquid, but a varnish may be used to coat an IC chip or an IC tag. Besides, the sheet, which is a sheet of paper, is used herein, but a polyvinyl chloride sheet, a plastic sheet, or a base board or substrate may be used. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
Number | Date | Country | Kind |
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2006-216668 | Aug 2006 | JP | national |