Sheet pile bales

Abstract

A sheet bundle package capable of suppressing erroneous reading and writing. A sheet bundle package of an embodiment has a sheet bundle, a conductive sheet, and a wrapping material. The sheet bundle has sheets each having a printable surface and a wireless tag. The conductive sheet is disposed at an end portion of the sheet bundle in a stacking direction of the sheets. In the conductive sheet, a region that overlaps the wireless tag when viewed in the stacking direction has conductivity. The wrapping material is used to wrap the sheet bundle.

Description

Technical Field

[0001] Embodiments of the present invention relate to sheet stacking and bundling bodies. Background Technology

[0002] An image forming apparatus is used to form an image on a sheet. A sheet with a wireless tag capable of reading and writing information exists. Sometimes, reading and writing are mistakenly performed on the sheet when it is not in a state suitable for reading or writing. Therefore, a solution is sought for a sheet stack package capable of suppressing erroneous reading and writing. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a sheet stack package that can suppress erroneous reading and writing.

[0004] The sheet stack bundle of this embodiment includes a sheet stack, conductive sheets, and bundling material. The sheet stack contains sheets having printable surfaces and wireless tags. The conductive sheets are disposed at the ends of the sheet stack in the stacking direction. The conductive sheets are conductive in the area with the wireless tag when viewed from the stacking direction. The bundling material is used to bundle the sheet stack. Attached Figure Description

[0005] Figure 1 This is an explanatory diagram showing an example of the configuration of an image forming apparatus.

[0006] Figure 2 This is a hardware configuration diagram of an image forming apparatus.

[0007] Figure 3 This is an unfolded diagram of the sheet stacked bundle of the embodiment.

[0008] Figure 4 It is a 3D view of a stack of sheets.

[0009] Figure 5 It is a three-dimensional view of a stacked bundle of sheet materials.

[0010] Figure 6 This is a 3D view of a conductive sheet.

[0011] Figure 7 This is a three-dimensional view of the conductive sheet of the first modified example.

[0012] Figure 8 This is a three-dimensional view of the conductive sheet of the second variation.

[0013] Figure 9 This is a three-dimensional view of the conductive sheet of the third variation.

[0014] Figure 10 This is a three-dimensional view of the bundling material in the fourth variation.

[0015] Explanation of reference numerals in the attached figures

[0016] Z…Layer direction; 17…Sheet detection device (optical sensor); 50…Sheet; 51…Printable surface; 57…Wireless tag; 59…Sheet stack; 60…Conductive sheet; 61, 62…Light reflectivity adjustment area; 63…First hole; 64…Second hole; 65…Third hole; 67…Conductive area; 70…Sheet stack bundle; 71…Bundling material; 76…Conductive sheet; 77…Slit. Detailed Implementation

[0017] The sheet stacking package of the embodiment will now be described with reference to the accompanying drawings.

[0018] First, adopt Figure 1 The configuration of the image forming apparatus 10 according to the embodiment will be described. Figure 1 This is an explanatory diagram showing an example of the configuration of the image forming apparatus 10.

[0019] exist Figure 1 In this image forming apparatus 10, there is a control panel 13, a wireless tag communication device 90, and a printer unit 18. The printer unit 18 includes a control unit 100, paper feed trays 16a and 16b, etc. The control unit 100 controls the control panel 13, the wireless tag communication device 90, and the printer unit 18. The control unit 100 controls the feeding of the sheet in the printer unit 18. The control of the sheet feeding includes controlling the sheet feeding timing, the sheet stopping position, and the sheet feeding speed.

[0020] The control panel 13 includes input keys and a display unit. For example, the input keys receive user input. For example, the display unit is a touch panel. The display unit receives user input and displays it to the user. For example, the control panel 13 displays items related to the operation of the image forming apparatus 10 on the display unit in a configurable manner. The control panel 13 notifies the control unit 100 of the user's configured items.

[0021] Paper trays 16a and 16b accommodate sheets with wireless tags attached. It should be noted that paper trays 16a and 16b can also accommodate sheets without wireless tags. In the following description, unless otherwise specified, the sheet refers to a sheet with a wireless tag. The sheet may be made of materials such as paper or plastic film.

[0022] The printer unit 18 performs the operation of forming an image. For example, the printer unit 18 forms an image indicated by image data on a sheet. In the following description, forming an image on a sheet is also referred to as "printing". It should be noted that in this embodiment, the printer unit 18 is a device for fixing toner images, but it is not limited to this and may also be an inkjet device.

[0023] The printer unit 18 includes an intermediate transfer belt 21. The printer unit 18 supports the intermediate transfer belt 21 via a driven roller 41 and a support roller 40. The printer unit 18 rotates the intermediate transfer belt 21 in the direction of arrow m. The printer unit 18 includes four image forming stations 22Y, 22M, 22C, and 22K. Each image forming station 22Y, 22M, 22C, and 22K corresponds to Y (yellow), M (magenta), C (cyan), and K (black), respectively. The image forming stations 22Y, 22M, 22C, and 22K are arranged below the intermediate transfer belt 21 along the rotation direction of the intermediate transfer belt 21.

[0024] The following explanation will use image forming station 22Y (yellow) as an example from among image forming stations 22Y, 22M, 22C, and 22K. It should be noted that image forming stations 22M, 22C, and 22K have the same configuration as image forming station 22Y, therefore, detailed descriptions will be omitted.

[0025] The image forming station 22Y includes a charged charger 26, an exposure scanning head 27, a developing unit 28, and a photoreceptor cleaner 29. The charged charger 26, the exposure scanning head 27, the developing unit 28, and the photoreceptor cleaner 29 are arranged around the photosensitive drum 24, which rotates in the direction of arrow n.

[0026] The image forming station 22Y has a primary transfer roller 30. The primary transfer roller 30 is positioned opposite the photosensitive drum 24 across the intermediate transfer belt 21.

[0027] The charged charger 26 uniformly charges the photosensitive drum 24. The exposure scanning head 27 exposes the uniformly charged photosensitive drum 24, forming an electrostatic latent image on the photosensitive drum 24. The developing apparatus 28 develops the electrostatic latent image on the photosensitive drum 24 using a two-component developer formed by toner and carrier.

[0028] The primary transfer roller 30 transfers the toner image formed on the photosensitive drum 24 onto the intermediate transfer belt 21 in one pass. The primary transfer rollers 30 of the image forming stations 22Y, 22M, 22C, and 22K each transfer the toner image onto the intermediate transfer belt 21 in one pass, thereby forming a colored toner image on the intermediate transfer belt 21. The colored toner image is formed by sequentially overlapping the toner images of Y (yellow), M (magenta), C (cyan), and K (black). The photoreceptor cleaner 29 removes any remaining toner from the photosensitive drum 24 after the primary transfer.

[0029] The printer section 18 includes a secondary transfer roller 32. The secondary transfer roller 32 is positioned opposite the support roller 40 across the intermediate transfer belt 21. The secondary transfer roller 32 also transfers the color toner image from the intermediate transfer belt 21 onto the sheet. It should be noted that, in the following description, the term "toner image" can refer to either a color toner image or a toner image with only one color. Furthermore, the toner image can also be a toner image using a neutralizing toner.

[0030] The conveying path 33 is a path for conveying sheets via multiple conveying rollers (e.g., conveying roller 330, etc.). The conveying path 33 includes a first conveying path 33a, a second conveying path 33b, and a third conveying path 33c. The first conveying path 33a is a conveying path from the confluence 44a to the branch 44b. The second conveying path 33b is a conveying path within the double-sided printing apparatus 38, and is a different conveying path from the branch 44b to the confluence 44a. The third conveying path 33c is a conveying path from the branch 44b to the paper discharge tray 20.

[0031] The sheet is removed from the sheet holding section 16 of any one of the paper feed trays 16a, 16b, and manual tray 16c. The sheet removed from the sheet holding section 16 is temporarily stopped at the point where the two registration rollers 31 are in contact. At this time, the leading edge of the sheet abuts against the registration rollers 31 to correct the tilt of the sheet. The control unit 100 starts the rotation of the registration rollers 31 and moves the sheet to the position of the secondary transfer roller 32 in accordance with the position of the toner image on the rotating intermediate transfer belt 21.

[0032] The toner image formed on the intermediate transfer belt 21 is transferred a second time onto the sheet via the secondary transfer roller 32. Furthermore, the toner image after the second transfer is fixed onto the sheet by the fixing device 34. Thus, under the control of the control unit 100, an image is formed on the sheet. The control unit 100 then conveys the sheet with the toner image fixed by the fixing device 34 to the third transport path 33c and performs paper output for the sheet.

[0033] The wireless tag communication device 90 includes a computing unit, a storage unit, and an antenna (not shown). The wireless tag in this embodiment is, for example, an RFID (Radio Frequency Identifier) ​​tag. The wireless tag communication device 90 transmits radio waves, for example, in the direction of arrow k. The wireless tag communication device 90 communicates with the wireless tag disposed on the sheet via the antenna. Specifically, the wireless tag communication device 90 reads information from the wireless tag and writes information into the wireless tag.

[0034] In cases where sheets are used for logistics, the information written into the wireless tag includes information indicating the contents, information indicating the destination, and the content printed on the sheet. In this embodiment, the wireless tag communication device 90 uses, for example, a 900MHz frequency band radio wave method (UHF). However, the RFID method and frequency band are not limited to this, and other methods and frequency bands can also be used.

[0035] The control unit 100 controls each part of the image forming apparatus 10.

[0036] Figure 2 This is a hardware configuration diagram of an image processing apparatus. The image forming apparatus 10 includes a CPU (Central Processing Unit) 91, a memory 92, an auxiliary storage device 93, etc., connected via a bus, and executes a program. The image forming apparatus 10 functions as a device that includes a printer unit 18, a control panel 13, and a wireless tag communication device 90 by executing the program.

[0037] CPU 91 functions as control unit 100 by executing programs stored in memory 92 and auxiliary storage device 93. Control unit 100 controls the operation of each functional unit of image forming apparatus 10.

[0038] The auxiliary storage device 93 is constructed using storage devices such as magnetic hard disk devices and semiconductor storage devices. The auxiliary storage device 93 stores information.

[0039] The sheet stacking and bundling body of the embodiment will be described.

[0040] Figure 3 This is an unfolded view of the sheet stack bundle body according to the embodiment. The sheet stack bundle body 70 includes a sheet stack 59, a conductive sheet 60, and a bundling material 71.

[0041] In this application, the Z, X, and Y directions of an orthogonal coordinate system are defined as follows. The Z direction is the stacking direction of the sheet 50 of the sheet stack 59. The -Z direction is the direction in which the conductive sheet 60 is arranged when viewed from the sheet stack 59. For example, the Z direction is the vertical direction, and the -Z direction is the downward direction. The X direction is the direction of the long side of the sheet 50, and the Y direction is the direction of the short side of the sheet 50. For example, the X and Y directions are horizontal directions.

[0042] Figure 4 This is a perspective view of a stack of sheets. The stack of sheets 59 has multiple sheets 50 stacked in the Z direction. The sheets 50 are formed of materials such as paper or resin. The sheets 50 have a printable surface 51 and a wireless tag 57.

[0043] The printable surface 51 is the entire surface of the sheet 50. The printable surface 51 may also be a part of the surface of the sheet 50. For example, the printable surface 51 of the sheet 50 is white.

[0044] The wireless tag 57 is embedded within the sheet 50 in the Z direction. The wireless tag 57 can also be mounted on the surface of the sheet 50. In both the X and Y directions, the wireless tag 57 is smaller than the sheet 50. When viewed from the Z direction, the wireless tag 57 appears to be positioned on a portion of the sheet 50. For example, the wireless tag 57 is an RFID (Radio Frequency Identifier) ​​tag.

[0045] A conductive sheet 60 is disposed at the Z-direction end of the sheet stack 59. The size of the conductive sheet 60 in the X and Y directions is the same as that of the sheet 50. The size of the conductive sheet 60 may also be smaller than that of the sheet 50. The thickness of the conductive sheet 60 in the Z direction may be the same as or different from that of the sheet 50. Details of the conductive sheet 60 will be described later.

[0046] The bundling material 71 is formed of paper or resin material, etc. The bundling material 71 is used to bundle the sheet stack 59.

[0047] Figure 5 This is a three-dimensional view of the sheet stack bundle. The sheet stack bundle 70 is formed by covering the entire sheet stack 59 with bundling material 71.

[0048] like Figure 3 As shown, the bundle material 71 of the sheet stack bundle 70 is unfolded, and the sheet stack 59 is removed. The sheet stack 59 is removed with the conductive sheet 60 positioned at its -Z direction end. The removed sheet stack 59 is then placed... Figure 1 The image forming apparatus 10 shown has a sheet mounting section 16. A sheet stack 59 is provided with the conductive sheet 60 positioned below. A written instruction guiding the placement direction of the conductive sheet 60 can also be sealed inside the packaging material 71.

[0049] The conductive sheet 60 is described in detail.

[0050] Figure 6 This is a perspective view of the conductive sheet 60. The substrate material of the conductive sheet 60 is formed of paper or resin, etc. The conductive sheet 60 has a conductive region 67 formed of a conductive material. For example, the conductive material is a metallic material such as aluminum. When viewed from the Z direction, the conductive region 67 overlaps with the wireless tag 57 of the sheet 50. Figure 6In this example, the entire surface of the conductive sheet 60 in the -Z direction is a conductive region 67. For example, the conductive region 67 is formed by aluminum vapor deposition onto the substrate material of the conductive sheet 60. The substrate material of the conductive sheet 60 may also be formed of a conductive material.

[0051] As Figure 1 The sheet material that the wireless tag communication device 90 reads and writes is the sheet material moving in the transport path 33. The sheet material 50 disposed in the sheet material placement section 16 is not the object of the wireless tag communication device 90's reading and writing. When multiple sheets 50 are present in the sheet material placement section 16, the wireless tags 57 of each sheet 50 overlap in the Z direction. The impedance of the antenna of the wireless tag 57 decreases, the matching with the chip breaks down, and communication between the wireless tag 57 and the wireless tag communication device 90 becomes difficult. Therefore, erroneous reading and writing of multiple sheets 50 disposed in the sheet material placement section 16 is suppressed.

[0052] When the sheet 50 in the sheet carrier 16 is consumed by printing and the remaining sheet 50 is a single sheet, the wireless tags 57 do not overlap in the Z direction. It is necessary to suppress erroneous readings and writing to this sheet 50.

[0053] Figure 6 A conductive sheet 60 is disposed below the sheet stack 59. The conductive sheet 60 is located below the remaining sheet 50. When viewed from the Z direction, the conductive area 67 of the conductive sheet 60 overlaps with the wireless tag 57 of the sheet 50. The impedance of the antenna of the wireless tag 57 decreases, making communication between the wireless tag 57 and the wireless tag communication device 90 difficult. Therefore, erroneous readings and writes to the remaining sheet 50 in the sheet mounting section 16 are suppressed.

[0054] The entire surface of the conductive sheet 60 in the -Z direction is a conductive region 67. (Set in...) Figure 1 The sheet 50 of the sheet carrier 16 is conveyed in the +X direction. The overlap between the wireless tag 57 and the conductive area 67 continues until the wireless tag 57 reaches the +X end of the conductive sheet 60. As a result, erroneous reading and writing of the sheet 50 is suppressed.

[0055] Figure 1 The sheet carrier 16 has a sheet detection device 17 for detecting the presence or absence of sheet 50. For example, the sheet detection device 17 is an optical sensor. The optical sensor illuminates light at the detection position of sheet 50 and receives the reflected light. The detection position is a part of the printable surface 51 of sheet 50. When the printable surface 51 of sheet 50 is a bright color such as white, the light reflectivity is high, and therefore the reflected light is strong. When sheet 50 is not present, the reflected light is weak. The optical sensor detects the presence or absence of sheet 50 by the intensity of the reflected light.

[0056] Figure 6 The conductive sheet 60 has a light reflectance adjustment region 61 with a different light reflectance than the printable surface 51 of the sheet 50. For example, if the printable surface 51 is a light color such as white, the light reflectance adjustment region 61 is a dark color such as black. In this case, the light reflectance of the light reflectance adjustment region 61 is less than that of the printable surface 51. Conversely, if the printable surface 51 is dark, the light reflectance adjustment region 61 is light. In this case, the light reflectance of the light reflectance adjustment region 61 is greater than that of the printable surface 51. The light reflectance adjustment region 61 can also be formed of a material with a different light reflectance than the printable surface 51. When viewed from the Z direction, the light reflectance adjustment region 61 overlaps with the detection position of the optical sensor on the sheet 50. Figure 6 In the example, the surface of the conductive sheet 60 in the +Z direction is the light reflectivity adjustment region 61.

[0057] exist Figure 1 When the sheet 50 is absent in the sheet carrier 16, the optical sensor illuminates the light reflectivity adjustment region 61 of the conductive sheet 60. The intensity of the reflected light from the light reflectivity adjustment region 61 is different from the intensity of the reflected light from the printable surface 51. This is used to detect the absence of the sheet 50.

[0058] When sheet 50 is not detected. Figure 1 The control unit 100 displays this information on the control panel 13. The control unit 100 stops the printing task. The conductive sheet 60 remains in the sheet holder 16. The user of the image forming apparatus 10 removes and discards the conductive sheet 60 from the sheet holder 16. It is also possible to display on the surface of the conductive sheet 60 in the +Z direction that the conductive sheet 60 should be discarded. The user sets a new sheet stack 59 and conductive sheet 60 in the sheet holder 16 and restarts the printing task. The old conductive sheet 60 that has been removed can also be reused. The user can also stack a new sheet stack 59 and conductive sheet 60 on top of the conductive sheet 60 remaining in the sheet holder 16.

[0059] As described in detail above, the sheet stack bundle 70 of the embodiment includes a sheet stack 59, a conductive sheet 60, and a bundling material 71. The sheet stack 59 is formed by stacking sheets 50 having a printable surface 51 and a wireless tag 57. The conductive sheet 60 is disposed at the end of the sheet stack 59 in the Z direction. When viewed from the Z direction, the conductive sheet 60 has a conductive area 67 that overlaps with the wireless tag 57. The bundling material 71 is used to bundle the sheet stack 59.

[0060] A conductive sheet 60 exists in the -Z direction of the sheet stack 59. When viewed from the Z direction, the conductive region 67 of the conductive sheet 60 overlaps with the wireless tag 57 of the sheet 50. Communication between the wireless tag 57 and the wireless tag communication device 90 becomes difficult. Therefore, erroneous read / write operations on the sheet 50 are suppressed.

[0061] The conductive sheet 60 has a light reflectivity adjustment region 61. When viewed from the Z direction, the light reflectivity adjustment region 61 overlaps with the detection position of the optical sensor on the sheet 50. The light reflectivity of the light reflectivity adjustment region 61 is different from that of the printable surface 51.

[0062] In the absence of sheet 50, the optical sensor illuminates the light reflectivity adjustment region 61 of the conductive sheet 60. The intensity of the reflected light from the light reflectivity adjustment region 61 differs from the intensity of the reflected light from the printable surface 51. This difference is used to detect the absence of sheet 50.

[0063] exist Figure 6 In the example, the entire surface of the conductive sheet 60 in the -Z direction is the conductive region 67, and the entire surface in the +Z direction is the light reflectivity adjustment region 61. Alternatively, the entire surface in the +Z direction can be both the conductive region 67 and the light reflectivity adjustment region 61.

[0064] The conductive sheet of the first modified example will be described.

[0065] Figure 7 This is a perspective view of the conductive sheet of the first modified example. Sometimes, the description of the first modified example, where parts identical to those in the described embodiment are omitted.

[0066] In the first variation, the conductive sheet 60 has a conductive region 68. When viewed from the Z direction, the conductive region 68 overlaps with the wireless tag 57 of the sheet 50. In the first variation, only a portion of the surface of the conductive sheet 60 in the -Z direction is the conductive region 68. Alternatively, only a portion of the surface of the conductive sheet 60 in the +Z direction may be the conductive region 68. Even with the conductive sheet 60 in the first variation, similar to the embodiment, erroneous read / write operations on the sheet 50 disposed on the sheet mounting portion 16 are suppressed.

[0067] In the first modified example, the conductive sheet 60 has a light reflectivity adjustment region 62. When viewed from the Z direction, the light reflectivity adjustment region 62 overlaps with the detection position of the sheet by the optical sensor. In the first modified example, only a portion of the surface of the conductive sheet 60 in the +Z direction is the light reflectivity adjustment region 62. Even in the first modified example, the conductive sheet 60 detects the absence of sheet 50 in the sheet mounting portion 16, similar to the embodiment.

[0068] The conductive sheet of the second modified example will be described.

[0069] Figure 8 This is a perspective view of the conductive sheet of the second variation. Sometimes, the description of the second variation, which shares the same parts as the aforementioned embodiment, is omitted.

[0070] Figure 1 The sheet placement section 16 includes a sheet detection device 17 for detecting the presence or absence of sheet 50. For example, the sheet detection device 17 is a physical switch. The physical switch contacts the detection position of sheet 50. When sheet 50 is present in the sheet placement section 16, the physical switch stops on the surface of sheet 50. When sheet 50 is absent, the physical switch moves significantly in the -Z direction. The physical switch detects the presence or absence of sheet 50 based on the amount of movement in the Z direction.

[0071] Figure 8 The conductive sheet 60 shown in the second variation has a first hole 63 for detecting the absence of sheet 50. The first hole 63 extends through the conductive sheet 60 in the Z direction. When viewed from the Z direction, the first hole 63 overlaps with the detection position of the physical switch on sheet 50.

[0072] When the sheet 50 is not present in the sheet mounting section 16, the physical switch moves significantly in the -Z direction through the first hole 63 of the conductive sheet 60. This is used to detect the absence of the sheet 50 in the sheet mounting section 16.

[0073] The physical switch's detection position on sheet 50 is sometimes set at a location separate from the center point of the sheet in both the X and Y directions. Sometimes the conductive sheet 60 is relative to... Figure 1 The sheet mounting portion 16 is positioned in opposite directions in the X and Y directions. In this case, when viewed from the Z direction, the detection position of the sheet 50 does not overlap with the position of the first hole 63 of the conductive sheet 60.

[0074] In the second variation, the conductive sheet 60 has a second hole 64. The first hole 63 and the second hole 64 are located at positions symmetrical with respect to the center points in the X and Y directions of the conductive sheet 60. When the conductive sheet 60 is positioned in opposite directions in the X and Y directions, the physical switch moves significantly in the -Z direction through the second hole 64. This is used to detect the absence of sheet 50 in the sheet mounting portion 16.

[0075] In the second variation, the conductive sheet 60 has a first hole 63 at the detection position of the physical switch on the sheet 50. Alternatively, the first hole 63 can also be located at the detection position of the optical sensor on the sheet. When the sheet 50 is not present on the conductive sheet 60, the optical sensor illuminates light through the first hole 63 of the conductive sheet 60. The sheet support portion 16 located below the conductive sheet 60 reflects the light. The reflected light from the sheet support portion 16 is weaker than the reflected light from the printable surface 51 of the sheet 50. This is used to detect the absence of the sheet 50 in the sheet support portion 16.

[0076] The conductive sheet of the third variation will be described.

[0077] Figure 9 This is a perspective view of the conductive sheet of the third variation. Sometimes, the description of the third variation, where parts are identical to those in the aforementioned embodiments, is omitted.

[0078] The detection position of the sheet 50 based on the physical switch sometimes varies depending on the manufacturer of the image forming apparatus 10. Sometimes, the first hole 63 of the conductive sheet 60 is configured to correspond to the detection position of the sheet 50 in the image forming apparatus 10 of a first company. When the conductive sheet 60 is placed in the sheet mounting portion 16 of the image forming apparatus 10 of a second company, the physical switch stops on the surface of the conductive sheet 60. In this case, it is impossible to detect the absence of the sheet 50 in the sheet mounting portion 16.

[0079] In the third variation, the conductive sheet 60 has a third hole 65. The third hole 65 is configured to correspond to the detection position of the sheet 50 in the image forming apparatus 10 of the second company. When the conductive sheet 60 is disposed in the sheet mounting section 16 of the image forming apparatus 10 of the second company, the physical switch moves significantly in the -Z direction through the third hole 65. In addition to the image forming apparatus 10 of the first company, the image forming apparatus 10 of the second company can also detect the absence of the sheet 50 in the sheet mounting section 16.

[0080] The conductive sheet of the fourth variation will be described.

[0081] Figure 10 This is a perspective view of the bundling material in the fourth variation. Sometimes, the description of the fourth variation, where parts are the same as those in the aforementioned embodiments, is omitted.

[0082] In the fourth variation, the conductive sheet 76 is part of the bundling material 71. The conductive sheet 76 is formed in the region where the bundling material 71 contacts the surface of the sheet stack 59 in the -Z direction. For example, the conductive sheet 76 and... Figure 6The conductive sheet 60 in the illustrated embodiment is the same. The entire surface of the conductive sheet 76 in the -Z direction is a conductive region, and the entire surface in the +Z direction is a light reflectivity adjustment region. The conductive region and the light reflectivity adjustment region can also be formed on the entire bundle material 71.

[0083] The conductive sheet 76 is part of the bundling material 71, therefore, no additional conductive sheet is required besides the bundling material 71. Even when various sizes of sheet 50 are available, there is no need to prepare conductive sheets according to the size of sheet 50. As a result, the cost of the sheet stack bundling body 70 is suppressed.

[0084] The packaging material 71 has a cut 77 on a portion surrounding the conductive sheet 76. The conductive sheet 76 is separated from the packaging material 71 in the area where the cut 77 is formed, and remains connected to the packaging material 71 in the non-formed area of ​​the cut 77. If the user divides the non-formed area of ​​the cut 77, the conductive sheet 76 is completely separated from the packaging material 71. The conductive sheet 76 is removed from the packaging material 71 while the sheet stack 59 and the conductive sheet 76 are overlapping. The conductive sheet 76 can be easily removed because of the cut 77 on a portion surrounding it.

[0085] According to at least one embodiment described above, a conductive sheet 60 is provided at the -Z direction end of the sheet stack 59. This allows for the suppression of erroneous read / write operations on the sheet 50.

[0086] Several embodiments of the present invention have been described; however, these embodiments are merely examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments or their variations are included within the scope and spirit of the invention, and are also included within the scope of the invention equivalent to that described in the claims.

Claims

1. A sheet material stacking and bundling body, characterized in that, have: Sheet stacks, which are stacked together to have printable surfaces and wireless tags; A conductive sheet is disposed at the end of the stack of sheets in the stacking direction, and the area overlapping the wireless tag is conductive when viewed from the stacking direction. as well as Bundling material, used to bundle the stack of sheets. The conductive sheet is part of the bundling material. The bundling material has cutouts around a portion of the conductive sheet.

2. The sheet stacking and bundling body according to claim 1, characterized in that, The conductive sheet has holes for detecting the absence of the sheet.

3. The sheet stacking and bundling body according to claim 1, characterized in that, In the conductive sheet, when viewed from the stacking direction, the light reflectivity of the region overlapping the detection position of the optical sensor on the sheet is different from that of the printable surface.

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