JP2016163947A - Module and printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer which can detect an unauthorized access by using a wiring sheet.SOLUTION: A printer 1 comprises: a memory board 15 provided with a fiscal memory 18; a wiring sheet 16 provided with first wiring 21 and wrapping the memory board 15; a memory board side RTC 42 detecting disconnection of the first wiring 21; and a flexible cable 27 connecting the memory board 15 and a fiscal control board 7. The wiring sheet 16 includes a second protrusion part 103 (sheet part) folded at a position overlapping with the memory board 15. The second protrusion part 103 includes a first slit 65 surrounded by the first wiring 21. The flexible cable 27 is routed to the outside of the wiring sheet 16 via the first slit 65. When the second protrusion part 103 is forcibly opened, the flexible cable 27 interferes therewith to break an opening edge of the first slit 65 in the second protrusion part 103 and disconnection is generated.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a module and a printer that can detect unauthorized access to a circuit board on which a memory is mounted.

  In order to detect unauthorized access from outside to the electronic component, Japanese Patent Application Laid-Open No. 2004-133867 describes a technique of surrounding the electronic component with a wiring sheet in which wiring is stretched. Since the wiring is cut when the wiring sheet is broken, unauthorized access can be detected based on the occurrence of the disconnection.

JP 2009-093401 A

  In recent years, as printers have become more sophisticated, there are many printers that store important information in electronic devices in the printer, and a means of protecting against information leakage in the event of a theft or loss is desired. In particular, the fiscal printer stores fiscal information relating to sales transactions in a fiscal memory. Fiscal information is information used for tax processing, etc., and its tampering is not allowed. Therefore, it is necessary for the fiscal printer to prevent unauthorized access to the fiscal memory from the outside. Also, the fiscal printer needs to be able to detect this access when there is an unauthorized access.

  Here, it is conceivable that a circuit board on which a fiscal memory is mounted is wrapped in a wiring sheet to form a module, thereby preventing unauthorized access to the fiscal memory and detecting unauthorized access. However, when the wiring sheet is folded and the circuit board is wrapped, by opening the folded wiring sheet, the fiscal memory on the circuit board may be accessible without breaking the wiring sheet. When the wiring sheet is opened, the wiring is not cut, so that unauthorized access cannot be detected based on the occurrence of the disconnection.

  In view of the above, an object of the present invention is to provide a module and a printer that can reliably detect unauthorized access using a wiring sheet.

  In order to solve the above problems, a module of the present invention includes a first circuit board having a memory, a second circuit board, a wiring sheet that includes wiring, and wraps around the first circuit board, and an abnormality in the wiring. A detection unit for detecting, and a cable for connecting the first circuit board and the second circuit board, and the wiring sheet is the first when viewed from the thickness direction of the first circuit board. A first sheet portion folded at a position overlapping with the circuit board; the first sheet portion including a first slit surrounded by the wiring; and the cable extending from the first circuit board to the first slit. And is connected to the second circuit board.

  In the present invention, since the first circuit board having the memory is wrapped in the wiring sheet, a person who tries to access the memory illegally breaks the wiring sheet or opens the folded wiring sheet. It is necessary to expose the memory from the first circuit board. Here, when the wiring sheet is torn, the wiring is cut, so that the detection unit detects an abnormality in the wiring. On the other hand, when the folded wiring sheet is opened, the first sheet portion cannot be opened because the cable passing through the first slit and the first slit interferes when the first sheet portion is opened. When the first sheet portion is forcibly opened, the opening edge of the first slit in the first sheet portion is broken due to interference with the cable. As a result, since the wiring covering the opening edge of the first slit is cut, the detection unit detects the abnormality of the wiring. Therefore, unauthorized access to the memory can be reliably detected based on the wiring abnormality.

  In the present invention, the wiring sheet includes a second sheet portion folded between the first circuit board and the first sheet portion, and the second sheet portion includes a second slit surrounded by the wiring. The cable may be led out of the wiring sheet from the first circuit board through the second slit and the first slit. In this way, when the second sheet portion is opened in order to expose the memory, the cable passing through the second sheet portion and the second slit interferes, so that the second sheet portion cannot be opened. If the second sheet portion is forcibly opened, the opening edge of the second slit in the second sheet portion is damaged due to interference with the cable. As a result, since the wiring covering the opening edge of the second slit is cut, the detection unit detects the abnormality of the wiring. Therefore, unauthorized access to the memory can be reliably detected based on the wiring abnormality.

  In the present invention, the wiring sheet includes a third sheet portion folded between the first circuit board and the second sheet portion, and the cable is provided between the first circuit board and the third sheet portion. To the outside of the wiring sheet through the second slit and the first slit. In this way, when the cable is pulled, a disconnection is generated, and unauthorized access to the memory can be detected. That is, when the cable is pulled in a direction away from the first circuit board, the cable moves the third sheet portion in a direction away from the first circuit board. As a result, the second sheet portion located outside the third sheet portion moves in a direction away from the first circuit board, so that the opening edge of the second slit is likely to be damaged due to interference with the cable. Further, when the cable moves the third sheet portion in the direction away from the first circuit board, the first sheet portion located outside the third sheet portion moves in the direction away from the first circuit board. The opening edge of the first slit is likely to be damaged by the interference.

  In the present invention, the detection unit may include a storage unit that records the abnormality of the wiring, and may be mounted on the first circuit board. If it does in this way, also when accessing a detection part, it is necessary to tear a wiring sheet and to expose a detection part. Therefore, it becomes difficult to falsify the record of the wiring abnormality recorded in the storage unit of the detection unit. In addition, since the detection unit including the storage unit is mounted on the first circuit board, unauthorized access can be detected on the side of the first circuit board on which the memory is mounted.

  In the present invention, the second circuit board includes a battery, the wiring sheet is connected to the first circuit board, and electric power is supplied to the detection unit from the battery via the cable and the wiring. Can be supplied. If it does in this way, the detection part can detect abnormality of wiring by monitoring the energization state of wiring. In this way, even when the cable is detached from the first circuit board or the second circuit board, the power supplied to the detection unit is interrupted as in the case where the disconnection occurs. Therefore, the detection unit can detect that the cable has been removed from the first circuit board or the second circuit board due to unauthorized access.

  In the present invention, the detection unit may be an RTC. Some RTCs include a volatile register (storage unit) for setting an alarm or the like. If such an RTC is used, the value stored in the register when the disconnection occurs is lost, so that a wiring abnormality can be recorded. Some RTCs have a register (storage unit) that records that a low voltage state has been entered when the voltage of power supplied to the RTC is lower than a predetermined voltage. Even when such an RTC is used, wiring abnormality can be recorded. Here, the RTC is a general-purpose product and is inexpensive. Therefore, the manufacturing cost of the apparatus can be suppressed. In addition, since the RTC has low power consumption, it operates over a long period of time by the power supplied from the battery. Therefore, if the detection unit is an RTC, unauthorized access can be detected over a long period of time.

  Next, a printer of the present invention includes the above-described module and a printing unit that executes printing based on print data for issuing a receipt, and the second circuit board is based on the print data for issuing a receipt. A fiscal information generating unit that generates the fiscal information; and a transmitting unit that transmits the fiscal information to the first circuit board in order to store the fiscal information in the memory.

  According to the printer of the present invention, the number of electronic components mounted on the first circuit board can be reduced as compared with the case where the printing unit and the fiscal information generation unit are mounted on the first circuit board. Thereby, since the first circuit board can be made small, the operation of wrapping the first circuit board with the wiring sheet is facilitated. Moreover, since the wiring sheet which wraps the 1st circuit board can be made small, the manufacturing cost of a wiring sheet can be suppressed.

1 is a perspective view of a fiscal printer to which the present invention is applied. It is a perspective view of the fiscal printer which pulled out the fiscal module. It is explanatory drawing of a fiscal module. It is a schematic block diagram which shows the control system of a fiscal module. It is explanatory drawing of a wiring sheet. It is explanatory drawing of the wrapping operation | movement of the memory substrate by a wiring sheet. It is explanatory drawing of the wrapping operation | movement of the memory substrate by a wiring sheet.

  Embodiments of a printer to which the present invention is applied will be described below with reference to the drawings.

  FIG. 1A is an external perspective view when the printer according to the present embodiment is viewed from an obliquely upper front, and FIG. 1B is an external perspective view when the printer is viewed from an obliquely upper rear. It is. FIG. 2 is an external perspective view of the printer when viewed from an obliquely upper rear side in a state where a module to be mounted on the printer is pulled out. 3A is an explanatory diagram of the memory module housed in the module, FIG. 3B is a cross-sectional view of the memory module, and FIG. 3C is a perspective view of the memory substrate and the flexible cable provided in the memory module. FIG. In FIG. 3C, electronic components such as an EJ memory and a fiscal memory mounted on a memory substrate are omitted. FIG. 4 is a schematic block diagram showing a module control system.

  The printer 1 (fiscal printer) is a printer for accounting connected to a POS terminal or the like. The printer 1 has a function of printing print information relating to sales transactions on a receipt and issuing a printed receipt, a function of storing and holding the contents of receipts as EJ (electronic journal) information, and taxation amounts from information relating to sales transactions. It has a function to store and hold the fiscal information calculated. As shown in FIG. 1, the printer 1 includes a printer main body 2 and a fiscal module 3 (module) fixed to the bottom of the printer main body 2 in a detachable manner.

  As shown in FIGS. 1 and 2, the printer body 2 includes an opening / closing lid 10 disposed on the front side of the upper surface and an opening / closing lid 11 disposed on the rear side of the upper surface. A receipt discharge port 12 extending in the width direction of the printer 1 is provided between the opening / closing lid 10 and the opening / closing lid 11. A slide button 13 is disposed on the side of the receipt outlet 12. Inside the printer main body 2, a print head (printing unit) (not shown) and a recording paper transport mechanism are mounted. A recording paper storage unit is provided inside the printer main body 2. When the slide button 13 is operated, the opening / closing lid 11 is unlocked and the opening / closing lid 11 can be opened. When the opening / closing lid 11 is opened, the storage section for the recording paper is exposed. Accordingly, the recording paper can be exchanged. When the opening / closing lid 10 is opened, the ink ribbon can be exchanged.

  As shown in FIG. 2, the fiscal module 3 includes a case 4 having a rectangular parallelepiped shape. A frame 5 is fixed on the case 4. As shown in FIG. 3A, the case 4 stores a printer control board 6, a fiscal control board 7 (memory control board), and a memory module 8 in a stacked state. The fiscal module 3 is attached to the bottom of the printer body 2 while being fixed to the frame 5. The fiscal module 3 includes various connectors 9 for connecting a host computer different from the POS terminal.

  As shown in FIG. 3B, the memory module 8 includes a memory substrate 15 and a wiring sheet 16 that is folded so as to enclose the memory substrate 15. As shown in FIG. 4, electronic components such as an EJ memory 17 that stores and holds EJ information and a fiscal memory 18 that stores and holds fiscal information are mounted on the memory board 15. A first wiring 21 and a second wiring 22 are stretched around the wiring sheet 16. Further, as shown in FIGS. 3A and 3B, the memory module 8 includes a box body 25 for storing the memory substrate 15 wrapped by the wiring sheet 16 and a memory substrate 15 wrapped by the wiring sheet 16. A mold part 26 for molding is provided. The mold part 26 is formed by a sealing agent such as an epoxy resin filled in the box body 25.

  As shown in FIG. 3C, the first connector 19 is mounted on the memory board 15. A flexible cable 27 is connected to the first connector 19. A second connector 20 is mounted on the memory board 15. The second connector 20 is a connector for connecting the wiring sheet 16 (first wiring 21 and second wiring 22) to the memory substrate 15. As shown in FIG. 3B, the flexible cable 27 is drawn out from the wiring sheet 16 after being routed between the memory board 15 and the wiring sheet 16 and between the folded wiring sheet 16. Further, it is pulled out of the mold part 26.

  Here, as shown in FIG. 3A, the printer control board 6 is disposed below the memory module 8. The fiscal control board 7 is disposed above the memory module 8. The flexible cable 27 drawn from the memory board 15 is connected to the fiscal control board 7. The fiscal control board 7 and the printer control board 6 are connected by a flexible cable 28 (see FIG. 4) provided between them.

(Fiscal module control system)
As shown in FIG. 4, the fiscal module 3 includes a printer control board 6, a fiscal control board 7, and a memory board 15.

  A printer control CPU 31 is mounted on the printer control board 6. On the fiscal control board 7, a fiscal control main CPU 33, a program tampering confirmation CPU 34, a ROM 35, a RAM 36, and a fiscal control board side RTC (real time clock) 37 are mounted. A backup battery 38 is mounted on the fiscal control board 7. On the memory board 15, a fiscal control sub CPU 41, an EJ memory 17, a fiscal memory 18, a memory board side RTC 42, and a wiring sheet connection portion 43 are mounted. The EJ memory 17 and the fiscal memory 18 are nonvolatile memories. The EJ memory 17 stores and holds EJ information, and the fiscal memory 18 stores and holds fiscal information.

  The printer control board 6 is communicably connected to the fiscal control board 7 via a flexible cable 28. The printer control CPU 31 can communicate with the printer main body 2 via the fiscal control main CPU 33 of the fiscal control board 7. The printer control CPU 31 drives and controls the print head and the transport mechanism of the printer main body 2.

  The main CPU 33 for fiscal control of the fiscal control board 7 performs fiscal control for writing information to the EJ memory 17 and the fiscal memory 18. The main CPU 33 for fiscal control generates EJ information based on print data supplied from a POS terminal and generates EJ information based on print data supplied from an external device. A fiscal information generation unit 46 that transmits the generated EJ information and fiscal information to the memory board 15 together with a recording command.

  The fiscal control main CPU 33 stops the operation of the printer 1 when the program alteration confirmation CPU 34 detects that the fiscal control program for performing the fiscal control has been altered.

  Further, the fiscal control main CPU 33 transmits an unauthorized access confirmation command for confirming the presence or absence of unauthorized access to the memory board 15 to the fiscal control sub CPU 41 at a predetermined timing. Also, the fiscal control main CPU 33 stops the operation of the printer 1 when receiving a report from the fiscal control sub CPU 41 that there has been unauthorized access as a reply to the unauthorized access confirmation command.

  The program alteration confirmation CPU 34 performs an alteration confirmation operation for confirming that the fiscal control program has not been altered. In the alteration confirmation operation, the program alteration confirmation CPU 34 compares the basic fiscal control program stored in the ROM 35 with the fiscal control program developed in the RAM 36 every time the printer 1 is activated. If the contents of the two control programs do not match, the program alteration confirmation CPU 34 notifies the fiscal control main CPU 33 that the alteration of the program has been detected.

  The fiscal control board side RTC 37 supplies time information to the program alteration confirmation CPU 34.

  The battery 38 supplies power to an electronic component (not shown) that needs to be supplied with backup power, such as the RTC 37 on the fiscal control board side or the SRAM that holds the setting information of the printer 1. The battery 38 is, for example, a button type that can be charged. The battery 38 also supplies backup power to the memory board side RTC 42 mounted on the memory board 15. It should be noted that power is supplied to the fiscal control main CPU 33, printer control CPU 31, and fiscal control sub CPU 41 from an external power source connected to the fiscal control board 7.

  The memory board 15 is connected to the fiscal control board 7 by a flexible cable 27 connected to the first connector 19. The fiscal control sub CPU 41 writes the EJ information supplied from the fiscal control main CPU 33 in the EJ memory 17 based on the recording command from the fiscal control main CPU 33. Further, the fiscal control sub CPU 41 writes the fiscal information supplied from the fiscal control main CPU 33 in the fiscal memory 18 based on the recording command from the fiscal control main CPU 33.

  The fiscal control sub-CPU 41 includes an NV memory (nonvolatile memory: second storage unit) 51, a random number generation unit 52 that generates a random number of multiple digits, and a random number generated by the random number generation unit 52. A setting unit 53 for storing and holding the memory board side RTC 42 is provided.

  Here, the fiscal module 3 includes, as operation modes, a normal mode for performing a receipt print control operation and a fiscal control operation, and a setting mode for performing various settings. When a setting mode shift command is input from the external device connected to the connector 9 to the fiscal control main CPU 33, the fiscal module 3 shifts from the normal mode to the setting mode. The setting mode is an operation mode used for initial setting of the printer 1 in a process before the printer 1 is shipped to the user. Therefore, the setting mode shift command is a command that the user who uses the printer 1 cannot know.

  In the setting mode, an initial setting operation for setting a key (random number) for detecting unauthorized access to the NV memory 51 and the memory board side RTC 42 is performed. In the initial setting operation, a random number generation command is input from the external device connected to the connector 9 to the fiscal control main CPU 33. The fiscal control main CPU 33 transmits the input random number generation command to the fiscal control sub CPU 41. In the fiscal control sub CPU 41 that has received the random number generation command, the random number generation unit 52 generates a random number. Further, the setting unit 53 stores and holds the random number in the NV memory 51 and the memory substrate side RTC 42 using the random number as a key. When the initial setting is completed, the printer 1 is returned to the normal mode and then shipped.

  The memory board side RTC 42 detects and records that the voltage of the power supplied to the memory board side RTC 42 is in a low voltage state equal to or lower than a predetermined voltage, and records it in a 1-bit first register 55 (low voltage detection unit). Is provided. The first register 55 is a volatile memory, and is provided in a general RTC. The memory board side RTC 42 includes a second register 56 having a plurality of bits. The second register 56 is a volatile memory, and is provided in a general RTC as a storage area for setting an alarm time and the like. The setting unit 53 of the fiscal control sub-CPU 41 stores and holds a key (random number) in the second register 56. The memory board-side RTC 42 is supplied with electric power from the battery 38 mounted on the fiscal control board 7 through the flexible cable 27, the wiring sheet 16, and the wiring sheet connecting portion 43 in this order.

  Here, the wiring sheet 16 includes a first wiring 21 and a second wiring 22 that are tightly stretched on the sheet surface. Each of the wirings 21 and 22 includes a first wiring part 61 and a second wiring part 62 that are separated from each other when the wiring sheet 16 is developed in a plane. The first wiring portion 61 and the second wiring portion 62 are connected when the wiring sheet 16 is folded so as to enclose the memory substrate 15. When the first wiring portion 61 and the second wiring portion 62 are connected, each of the wirings 21 and 22 can be conducted as one wiring.

  More specifically, each of the wirings 21 and 22 includes a first wiring part 61 and a second wiring part 62 that are separated from each other when the wiring sheet 16 is developed in a plane, and a first wiring part 61 and a second wiring. Conductive wiring 63 spaced from the portion 62 is provided. When the wiring sheet 16 is folded, each of the wirings 21 and 22 is laminated with a sheet portion of the wiring sheet 16 in which the first wiring portion 61 is formed and a sheet portion of the wiring sheet 16 in which the conductive wiring 63 is formed. . As a result, the first wiring portion connecting portion 61 a provided at one end of the first wiring portion 61 and the conduction wiring 63 are overlapped and connected. Further, when the wiring sheet 16 is folded, each of the wirings 21 and 22 is laminated with the sheet portion of the wiring sheet 16 in which the second wiring portion 62 is formed and the sheet portion of the wiring sheet 16 in which the conductive wiring 63 is formed. Is done. As a result, the second wiring portion connecting portion 62 a provided at one end of the second wiring portion 62 and the conduction wiring 63 are overlapped and connected. As a result, each of the wirings 21 and 22 is connected to the first wiring portion 61 and the second wiring portion 62 via the conductive wiring 63, and becomes a single wiring that can conduct each.

  In addition, the wiring sheet 16 includes a first slit 65 and a second slit 66 in a region surrounded by the first wiring 21. The first slit 65 and the second slit 66 are provided in each of the two sheet portions of the wiring sheet 16 that is folded to a position overlapping the substrate surface of the memory substrate 15. The flexible cable 27 connected to the memory substrate 15 passes through the first slit 65 and the second slit 66. That is, the flexible cable 27 is drawn from the inside of the wiring sheet 16 to the outside of the wiring sheet 16 through the first slit 65 and the second slit 66 and connected to the fiscal control board 7.

  Further, the wiring sheet 16 has a first terminal 71 for connecting one end of the first wiring 21 that is a single wiring to the memory substrate 15, and the other end of the first wiring 21 to the memory substrate 15. A second terminal 72 is provided for connection. In addition, the wiring sheet 16 has a third terminal 73 for connecting one end of the second wiring 22, which is a single wiring, to the memory substrate 15, and the other end of the second wiring 22 to the memory substrate 15. A fourth terminal 74 is provided for connection. A specific configuration example of the wiring sheet 16 and a specific wrapping structure of the memory substrate 15 by the wiring sheet 16 will be described later.

  Next, the wiring sheet connecting portion 43 in the memory substrate 15 includes the second connector 20 to which the first terminal 71 to the fourth terminal 74 of the wiring sheet 16 are connected. The second connector 20 includes a first memory board side terminal 75 to which the first terminal 71 is connected, a second memory board side terminal 76 to which the second terminal 72 is connected, and a third memory board to which the third terminal 73 is connected. A fourth memory board side terminal 78 to which the side terminal 77 and the fourth terminal 74 are connected is provided.

  The first substrate side wiring 81 is connected to the first terminal portion 75. The first board side wiring 81 is connected to the battery 38 mounted on the fiscal control board 7 via the flexible cable 27. The memory substrate side RTC 42 is connected to the second memory substrate side terminal 76 via the second substrate side wiring 82 and the FET 83. More specifically, the second substrate side wiring 82 extending from the second memory substrate side terminal 76 is connected to the drain D of the FET 83, and the memory substrate side RTC 42 is connected to the source S.

  A third substrate side wiring 84 extends from the third memory substrate side terminal 77. The third substrate side wiring 84 is connected to the second substrate side wiring 82 through the resistor 85 and is also connected to the gate G of the FET 83. Therefore, the drain D and the gate G of the FET 83 are connected via the resistor 85. The fourth memory board side terminal 78 is grounded.

  According to the circuit configuration of the wiring sheet connecting portion 43, the power from the battery 38 is supplied to the memory substrate side RTC 42 via the flexible cable 27, the first substrate side wiring 81, the first wiring 21, the second substrate side wiring 82, and the FET 83. To be supplied. Here, when the flexible cable 27 is pulled out from the memory board 15 or the fiscal control board 7 and when an abnormality occurs in the wiring such as when the first wiring 21 or the second wiring 22 is disconnected, the FET 83 The applied voltage is reduced and the FET 83 is turned off. Thereby, the memory board side RTC 42 detects the low voltage state, and the value stored and held in the first register 55 is lost. Further, the RTC 42 on the memory board side erases the key (random number) stored and held in the second register 56 by cutting off the power supply. Therefore, the RTC 42 on the memory board side functions as a detection unit that detects that the flexible cable 27 is pulled out from the memory board 15 or the fiscal control board 7. Further, the memory substrate side RTC 42 functions as a detection unit that detects disconnection of the first wiring 21 and the second wiring 22.

  Here, when receiving the unauthorized access confirmation command from the fiscal control main CPU 33, the fiscal control sub CPU 41 performs an unauthorized access confirmation operation for confirming the presence or absence of unauthorized access to the memory board 15. In the unauthorized access confirmation operation, the fiscal control sub CPU 41 compares the key (random number) stored and held in the second register 56 of the RTC 42 on the memory board side with the key (random number) stored and held in its own NV memory 51. If the key stored in the second register 56 is different from the key stored in the NV memory 51, the fiscal control sub-CPU 41 makes an illegal access to the memory control board 15 to the fiscal control main CPU 33. Report that there was.

  As an unauthorized access confirmation operation, in parallel with the operation of comparing the random number stored in the second register 56 of the RTC 42 on the memory board side with the random number stored in the own NV memory 51, the secondary CPU 41 for fiscal control The first register 55 may be referred to. In this case, when the information stored in the first register 55 is lost, the secondary CPU 41 for fiscal control differs between the random number stored in the second register 56 and the random number stored in the NV memory 51. Or when the information stored in the first register 55 is lost and the random number stored in the second register 56 is different from the random number stored in the NV memory 51, The fiscal control main CPU 33 is notified that there has been an unauthorized access to the memory board 15.

(Unauthorized detection operation)
When the printer 1 is turned on, the program alteration confirmation CPU 34 performs an alteration confirmation operation. If the basic fiscal control program stored in the ROM 35 and the fiscal control program stored in the RAM 36 do not match due to the alteration confirmation operation, the program alteration confirmation CPU 34 informs the fiscal control main CPU 33 that the program has been altered. report. Receiving the notification, the fiscal control main CPU 33 stops the operation of the printer 1.

  When the power of the fiscal printer 1 is turned on, the fiscal control main CPU 33 transmits an unauthorized access confirmation command to the fiscal control sub CPU 41. The fiscal control sub-CPU 41 that has received the unauthorized access confirmation command performs an unauthorized access confirmation operation. Here, if the key (random number) stored in the second register 56 of the RTC 42 on the memory board side is different from the key (random number) stored and held in the NV memory 51, the fiscal control sub-CPU 41 The main CPU 33 is notified that there has been unauthorized access to the fiscal control board 7. Receiving the notification, the fiscal control main CPU 33 stops the operation of the printer 1.

  If the random number stored in the second register 56 of the memory board side RTC 42 and the random number stored and held in the NV memory 51 are different, the power supply to the memory board side RTC 42 is cut off and stored in the second register 56. This is a case where the recorded information is lost.

  Such a state is caused by the flexible cable 27 being pulled out from the fiscal control board 7 or the memory board 15. Therefore, the unauthorized access confirmation operation can detect unauthorized access to the memory board 15 that is performed by pulling out the flexible cable 27.

  The state in which the information stored and held in the second register 56 is lost is caused when a break occurs in at least one of the first wiring 21 and the second wiring 22 of the wiring sheet 16.

  Here, the disconnection of at least one of the first wiring 21 and the second wiring 22 occurs when the wiring sheet 16 is opened so as to expose the memory substrate 15. That is, when the wiring sheet 16 is opened, the first wiring portion 61, the second wiring portion 62, and the conduction wiring 63 of the first wiring 21 are separated from each other, and the electrical connection therebetween is released. As a result, the first wiring 21 is disconnected. When the wiring sheet 16 is opened, the first wiring portion 61, the second wiring portion 62, and the conductive wiring 63 of the second wiring 22 are separated from each other, and the electrical connection therebetween is released. As a result, the second wiring 22 is disconnected. Therefore, the unauthorized access confirmation operation can detect unauthorized access to the memory board 15 performed by opening the wiring sheet 16.

  Further, disconnection of at least one of the first wiring 21 and the second wiring 22 also occurs when the wiring sheet 16 is damaged when the memory substrate 15 is exposed.

  The case where the wiring sheet 16 is damaged is, for example, the case where the wiring sheet 16 is cut with a blade. When the wiring sheet 16 is cut, the first wiring 21 or the second wiring 22 stretched around the wiring sheet 16 is cut, so that the first wiring 21 or the second wiring 22 is disconnected. Therefore, the unauthorized access confirmation operation can detect unauthorized access to the memory board 15 performed by cutting the wiring sheet 16.

  In addition, when the folded wiring sheet 16 is opened to expose the memory substrate 15, the wiring sheet 16 is damaged. That is, as will be described in detail later, in this example, two slits 65 and 66 provided in two sheet portions that overlap when the flexible cable 27 drawn from the memory substrate 15 is folded in the wiring sheet 16 are provided. It is penetrated and pulled out to the outside of the wiring sheet 16 (derived). Therefore, when the wiring sheet 16 is opened to expose the memory substrate 15, the flexible cable 27 interferes with the opening edges of the slits 65 and 66 in the wiring sheet 16 and breaks the opening edges. As a result, the first wiring 21 or the second wiring 22 covering the opening edges of the slits 65 and 66 is cut, so that the first wiring 21 or the second wiring 22 is disconnected. Therefore, the unauthorized access confirmation operation can detect unauthorized access to the memory board 15 that is performed by forcibly opening the wiring sheet 16.

  Here, after the key stored in the second register 56 of the RTC 42 on the memory board side disappears, it is difficult to store the lost key in the second register 56 again. That is, the key stored and held in the second register 56 is a multi-digit random number, and it is not easy to estimate the same value as the value before disappearance after the key disappearance. Further, since the random number is generated by the fiscal control sub CPU 41 mounted on the memory board 15 wrapped in the wiring sheet 16, the random number is previously obtained from the outside of the wiring sheet 16 (from the fiscal control board 7 side). I can't know. Therefore, it is difficult to reproduce the same value as the lost random number. Therefore, unauthorized access to the memory substrate 15 is prevented by the unauthorized access confirmation operation that compares the key (random number) stored in the second register 56 of the RTC 42 on the memory substrate side with the key (random number) stored in the NV memory 51. It is possible to reliably capture what happened.

  In this example, an RTC (memory substrate side RTC 42) provided with a register is used for detection and recording of unauthorized access. An RTC equipped with a register is a general-purpose product and is inexpensive, so that the manufacturing cost of the apparatus can be suppressed. Further, since the RTC consumes little power, it operates over a long period of time using the power supplied from the battery 38. Therefore, unauthorized access can be detected over a long period of time.

  In this example, the fiscal control main CPU 33 including the EJ information generation unit 45 and the fiscal information generation unit 46 is mounted on the fiscal control board 7. Therefore, the number of electronic components mounted on the memory board 15 can be reduced as compared with the case where the fiscal control main CPU 33 is mounted on the memory board 15 side. Thereby, since the memory substrate 15 can be made small, the work of wrapping the memory substrate 15 with the wiring sheet 16 becomes easy. Further, since the wiring sheet 16 that wraps around the memory substrate 15 can be made small, the manufacturing cost of the wiring sheet 16 can be suppressed.

  Note that a detection unit that detects that the flexible cable 27 is pulled out from the memory substrate 15 or the fiscal control board 7 and a detection unit that detects disconnection of the first wiring 21 and the second wiring 22 are provided on the fiscal control board 7. It can also be provided on the side. In this case, the RTC 42 on the memory board side may be omitted, a new RTC may be mounted on the fiscal control board 7, and the wiring sheet connecting portion 43 may be connected to the new RTC via the flexible cable 27. In this case, if the time information is supplied from the new RTC to the program alteration confirmation CPU 34, the new RTC can also serve as the RTC 37 on the fiscal control board side.

(Specific configuration example of wiring sheet)
Next, a specific configuration example of the wiring sheet 16 will be described with reference to FIGS. 3, 4, and 5. FIG. 5A is a plan view of the wiring sheet 16 developed on a plane, and FIG. 5B is a partially enlarged view of a part of the wiring sheet 16. In the following description, as shown in FIG. 5A, the direction in which the first slit 65 and the second slit 66 extend is defined as the width direction X (left-right direction X) of the wiring sheet 16 and is orthogonal to the width direction X. The direction is the front-rear direction Y of the wiring sheet 16, and the direction orthogonal to the width direction X and the front-rear direction Y is the vertical direction Z of the wiring sheet 16. The side on which the first slit 65 is provided is defined as a first direction X1, and the side on which the second slit 66 is provided is defined as a second direction X2. Further, in the wiring sheet 16, the side on which the protruding portion (fourth protruding portion 105) connected to the memory substrate 15 is provided is a front direction Y 1, and the opposite direction is a rear direction Y 2.

  Here, the memory substrate 15 has a rectangular planar shape. A first connector 19 and a second connector 20 are mounted on the first surface 15 a of the memory substrate 15.

(Outline of the first wiring and the second wiring)
The wiring sheet 16 is provided with a first wiring 21 and a second wiring 22 that are one wiring that can be energized when the wiring sheet 16 is folded so as to wrap the memory substrate 15. Each of the first wiring 21 and the second wiring 22 is mounted on the wiring sheet 16 at a narrow pitch, as shown in FIG.

  As shown in FIG. 4, each of the wirings 21 and 22 includes a first wiring part 61 and a second wiring part 62 that are separated from each other when the wiring sheet 16 is spread on a plane, and a first wiring part 61 and a second wiring part 62. Conductive wiring 63 spaced from the wiring portion 62 is provided. A first wiring portion connection portion 61 a that is a connection portion with the conduction wiring 63 is provided at one end portion of the first wiring portion 61 in the first wiring 21, and a first terminal 71 is provided at the other end portion. It is done. A second wiring portion connection portion 62 a that is a connection portion with the conduction wiring 63 is provided at one end portion of the second wiring portion 62 in the first wiring 21, and a second terminal 72 is provided at the other end portion. It is done. Similarly, the first wiring portion 61 of the second wiring 22 is provided with a first wiring portion connecting portion 61a serving as a connecting portion with the conductive wiring 63 at the one end portion, and the third terminal is provided at the other end portion. 73 is provided. A second wiring portion connection portion 62 a that is a connection portion with the conductive wiring 63 is provided at one end portion of the second wiring portion 62 in the second wiring 22, and a fourth terminal 74 is provided at the other end portion. It is done.

  Here, the wiring sheet 16 is provided with the wirings 21 and 22 on a base material of a plastic sheet, like a general flexible printed wiring board. Each of the wires 21 and 22 is covered with a plastic sheet except for the first wire portion connecting portion 61a, the second wire portion connecting portion 62a, the conductive wire 63, and the terminal.

(Configuration of wiring sheet)
As shown in FIG. 5A, the wiring sheet 16 includes a wide portion 101 wider than the width of the memory substrate 15 in the center portion in the width direction X. In addition, the wiring sheet 16 protrudes in the first direction X1 from a rectangular first protrusion 102 that protrudes in the front direction Y1 from the central portion in the width direction X of the wide portion 101, and in the middle in the front-rear direction Y of the wide portion 101. And a rectangular third protrusion 104 that protrudes in the second direction X2 from a middle portion in the front-rear direction Y of the wide portion 101. Furthermore, the wiring sheet 16 includes a fourth protrusion 105 that protrudes with a narrow width in the front direction Y1 from a portion of the front end edge of the first protrusion 102 that is closer to the second direction X2. First to fourth terminals 71 to 74 are provided at the tip portion of the fourth protrusion 105. Each terminal is arranged in the order of the first terminal 71, the second terminal 72, the fourth terminal 74, and the third terminal 73 from the first direction X1 in the width direction X toward the second direction. Each terminal 71 to 74 extends in the front-rear direction Y.

  The first wiring 21 is formed on the right side (first direction X1 side) of the imaginary line L0 that passes between the second terminal 72 and the fourth terminal 74 and extends in the front-rear direction Y. The first wiring portion 61 of the first wiring 21 is formed on the front portion of the wide portion 101 and the first protruding portion 102. The first wiring portion connection portion 61 a of the first wiring portion 61 is formed on the front side of the edge portion of the wide portion 101 in the first direction X1. The second wiring portion 62 of the first wiring 21 is formed on the rear portion of the wide portion 101 and the second protruding portion 103. The second wiring portion connection portion 62a of the second wiring portion 62 is formed on the rear side of the edge portion of the wide portion 101 in the first direction X1. The conductive wiring 63 of the first wiring 21 is an edge portion in the first direction X1 of the wide portion 101 and is provided between the first wiring partial connection portion 61a and the second wiring partial connection portion 62a in the front-rear direction Y. It is done.

  The second wiring 22 is formed on the left side (second direction X2 side) of the virtual line L0. The first wiring portion 61 of the second wiring 22 is formed on the front portion of the wide portion 101 and the first protruding portion 102. The first wiring portion connecting portion 61a of the first wiring portion 61 is formed on the front side of the edge portion of the wide portion 101 in the second direction X2. The second wiring portion 62 of the second wiring 22 is formed on the rear portion of the wide portion 101 and the third protruding portion 104. The second wiring portion connection portion 62a of the second wiring portion 62 is formed on the rear side of the edge portion of the wide portion 101 in the second direction X2. The conductive wiring 63 of the second wiring 22 is an edge portion in the second direction X2 of the wide portion 101 and is provided between the first wiring partial connection portion 61a and the second wiring partial connection portion 62a in the front-rear direction Y. It is done.

  The first wiring portion connection portion 61a, the second wiring portion connection portion 62a, and the conduction wiring 63 in each wiring 21 and 22 are provided in a strip shape extending in the front-rear direction Y. The first wiring portion connection portion 61 a, the second wiring portion connection portion 62 a, and the conduction wiring 63 in each wiring 21, 22 have a wider width than the other portions of each wiring 21, 22.

  A first slit 65 is formed in the front portion of the second protrusion 103. The first slit 65 extends in the width direction X with a constant width. The first slit 65 is surrounded by the first wiring portion 61 of the first wiring 21. That is, the wiring that forms the first wiring portion 61 of the first wiring 21 surrounds the first slit 65 at the opening edge 65 a of the first slit 65 in the wiring sheet 16. A second slit 66 is formed in the front portion of the third protrusion 104. The second slit 66 extends in the width direction X with a constant width. The second slit 66 is surrounded by the first wiring portion 61 of the second wiring 22. That is, the wiring forming the first wiring part 61 of the second wiring 22 surrounds the opening slit 66 a of the second slit 66 in the wiring sheet 16 so as to surround the second slit 66.

(Wrapping structure of memory board by wiring sheet)
FIG. 6 is an explanatory view of a folding operation in which the wiring sheet 16 is folded to make each of the first wiring 21 and the second wiring 22 a single wiring that can be energized. FIG. 7 is an explanatory diagram of the routing operation of the flexible cable 27 for routing the flexible cable 27 to the outside of the wiring sheet 16 while folding the wiring sheet 16.

  When the memory board 15 is wrapped with the wiring sheet 16, first, the flexible cable 27 is connected to the first connector 19 of the memory board 15. Further, the fourth projecting portions (first to fourth terminals 71 to 74) of the wiring sheet 16 are inserted into the second connector 20 of the memory substrate 15.

  6A, the first surface 15a of the memory board 15 on which the first connector 19 and the second connector 20 are mounted is directed upward, and the memory board 15 is positioned on the front side of the wide portion 101. Place in the center of direction X. At this time, the end of the memory substrate 15 opposite to the end to which the flexible cable 27 or the like is connected is disposed along the first fold line L1. The first folding line L1 is formed between the first wiring portion connection portion 61a of the first wiring 21 and the conduction wiring 63 of the first wiring 21 and the first wiring portion connection portion 61a of the second wiring 22 in the wiring sheet 16. And an imaginary line extending in the width direction X through the conductive line 63 of the second wiring 22. The first fold line L1 crosses the region where the first wiring portion 61 of the first wiring 21 in the wide portion 101 is formed and the region where the first wiring portion 61 of the second wiring 22 in the wide portion 101 is formed. Extend.

  Here, in the state where the memory substrate 15 is placed on the wiring sheet 16, as shown in FIG. 6A, the first wiring portion connecting portion 61 a of the first wiring 21 and the first wiring portion connecting portion of the second wiring 22. 61 a is located at a position away from the memory substrate 15 in the width direction X.

  Next, as indicated by an arrow in FIG. 6A, the portion of the wiring sheet 16 on which the memory substrate 15 is placed is folded together with the memory substrate 15 to the rear Y2 along the first fold line L1. When the wiring sheet 16 is folded along the first fold line L1, the flexible cable 27 is pulled out from the memory substrate 15 toward the rear Y2. Further, when the wiring sheet 16 is folded along the first fold line L1, as shown in FIG. 6B, the first wiring 21 connecting portion 61a of the first wiring 21 and the conductive wiring of the first wiring 21 63 are electrically connected by overlapping in the vertical direction Z. Similarly, the first wiring partial connection portion 61a of the second wiring 22 and the conduction wiring 63 of the second wiring 22 are electrically connected by overlapping in the vertical direction Z. The memory substrate 15 is sandwiched from the up-down direction Z by the wiring sheet 16 folded in two.

  Here, the width dimension of the first protrusion 102 is longer than the width dimension of the memory substrate 15, but between the conduction wiring 63 of the first wiring 21 and the conduction wiring 63 of the second wiring 22 in the width direction X. Shorter than distance. Therefore, when the wiring sheet 16 is bent along the first fold line L1, the rear portion of the conductive wire 63 of the first wire 21 and the rear portion of the conductive wire 63 of the second wire 22 are projected first. It is not covered by the portion 102 and is exposed upward.

  Thereafter, as indicated by an arrow in FIG. 6B, the rear side portion of the wide portion 101 of the wiring sheet 16 is folded forward Y1 along the second fold line L2. The second fold line L2 is formed between the second wiring portion connecting portion 62a of the first wiring 21 and the conductive wiring 63 of the first wiring 21 and the second wiring portion connecting portion 62a of the second wiring 22 in the wiring sheet 16. And an imaginary line extending in the width direction X through the conductive line 63 of the second wiring 22. The second folding line L2 crosses the region where the second wiring portion 62 of the first wiring 21 in the wide portion 101 is formed and the region where the second wiring portion 62 of the second wiring 22 in the wide portion 101 is formed. Extension

  When the wiring sheet 16 is folded along the second fold line L2, the flexible cable 27 is also folded forward Y1 together with the wiring sheet 16, as shown in FIG. As a result, the flexible cable 27 is routed between two sheet portions (the sheet portion 110 and the sheet portion 111) that are stacked by bending. Further, the memory substrate 15 is covered with the folded wiring sheet 16 from the front-rear direction Y and the vertical direction Z.

  Further, when the wiring sheet 16 is folded along the second fold line L2, the second wiring portion connecting portion 62a of the first wiring 21 and the rear portion of the conductive wiring 63 of the first wiring 21 are in the vertical direction Z. Overlapping and electrically connected. Similarly, the second wiring part connection portion 62a of the second wiring 22 and the rear side part of the conduction wiring 63 of the second wiring 22 are electrically connected by overlapping in the vertical direction Z. As a result, the first wiring 21 becomes one wiring that can be conducted by electrically connecting the first wiring portion 61 and the second wiring portion 62 through the conduction wiring 63. Similarly, the second wiring 22 is a single wiring in which the first wiring portion 61 and the second wiring portion 62 are electrically connected via the conductive wiring 63 and can be conducted.

  Here, when the wiring sheet 16 is folded along the first fold line L1, the second wiring 22 is connected between the first wiring portion connecting portion 61a of the first wiring 21 and the conductive wiring 63 of the first wiring 21. A conductive double-sided tape 106 is interposed between the first wiring part connecting portion 61 a and the conductive wiring 63 of the second wiring 22. Further, when the wiring sheet 16 is bent along the second fold line L2, the second wiring portion connection portion 62a of the first wiring 21 and the conductive wiring 63 of the first wiring 21 and the second wiring 22 A conductive double-sided tape (connecting member) 106 is interposed between the second wiring portion connecting portion 62 a and the conductive wiring 63 of the second wiring 22.

  Specifically, as shown by the dotted lines in FIGS. 6A and 6B, the conductive double-sided tape 106 is applied along the conductive wiring 63 of the first wiring 21 before performing the wrapping operation. At the same time, a conductive double-sided tape 106 is attached along the conductive wiring 63 of the second wiring 22. Thereafter, the wiring sheet 16 is folded along the first fold line L1, and further, the wiring sheet 16 is folded along the second fold line L2. In this way, the electrical connection between the first wiring part connecting portion 61a of the first wiring 21 and the conductive wiring 63 of the first wiring 21 is ensured. In addition, the electrical connection between the first wiring partial connection portion 61a of the second wiring 22 and the conductive wiring 63 of the second wiring 22 is ensured. Further, the electrical connection between the second wiring partial connection portion 62a of the first wiring 21 and the conductive wiring 63 of the first wiring 21 is ensured. In addition, the electrical connection between the second wiring portion connecting portion 62a of the second wiring 22 and the conductive wiring 63 of the second wiring 22 is ensured. Therefore, the first wiring 21 can be a single wiring that can be reliably conducted. Further, the second wiring 22 can be a single wiring that can be reliably conducted. Furthermore, since the sheet portions of the wiring sheet 16 laminated by bending can be bonded, it is possible to prevent the laminated sheet portions from being separated.

  In a state in which the wiring sheet 16 is folded along the second fold line L2, as shown in FIG. 6C, the flexible cable 27 is exposed from the edge 111a of the wide portion 101 folded in the front Y1. Extends forward Y1. Here, the edge 111 a of the wide portion 101 folded in the front Y <b> 1 is positioned slightly in the rear Y <b> 2 with respect to the first slit 65 and the second slit 66.

  Next, as shown in FIG. 7A, the wiring sheet 16 is folded rightward (first direction X1) along the third fold line L3. The third fold line L3 is located inside the first wiring part connection part 61a, the conduction wiring 63, and the second wiring part connection part 62a of the second wiring 22 in the wide part 101, and It extends along the edge on the left side (second direction X2). Accordingly, the wiring sheet 16 is formed with the first protruding portion 104 and the first wiring portion connecting portion 61 a of the second wiring 22, the conductive wiring 63, and the second wiring portion connecting portion 62 a in the wide portion 101. The edge portion is bent.

  Here, when the bent portion is arranged at a position overlapping the substrate surface of the memory substrate 15 when viewed from the vertical direction Z, the flexible cable 27 is passed through the second slit 66 formed in the third protrusion 104. Let

  Thereafter, as shown by an arrow in FIG. 7B, the wiring sheet 16 is bent leftward (second direction X2) along the fourth fold line L4. The fourth fold line L4 is located inside the first wiring portion connection portion 61a, the conduction wiring 63, and the second wiring portion connection portion 62a of the first wiring 21 in the wide portion 101. It extends along the edge on the right side (first direction X1). Accordingly, the wiring sheet 16 is formed with the second protrusion 103 and the first wiring portion connection portion 61 a of the first wiring 21, the conductive wiring 63, and the second wiring portion connection portion 62 a in the wide portion 101. The edge portion is bent.

  Here, as shown in FIG. 7C, the bent portion is formed in the second protrusion 103 when the bent portion is arranged at a position overlapping the substrate surface of the memory substrate 15 when viewed in the vertical direction Z. The flexible cable 27 is passed through the first slit 65.

  As described above, the wrapping of the memory substrate 15 by the wiring sheet 16 is completed. In the state where the wrapping of the memory substrate 15 by the wiring sheet 16 is completed, as shown in FIG. 7D, the second protruding portion of the wiring sheet 16 is located at a position overlapping the substrate surface of the memory substrate 15 when viewed from above. 103 and the 3rd protrusion part 104 will be in the state knitted by the flexible cable 27 which penetrates each slit 65,66.

  As shown in FIG. 3B, the memory substrate 15 encapsulated by the wiring sheet 16 is accommodated in the box 25 and molded with a sealant filled in the box 25. At the time of molding, the flexible cable 27 is pulled out from the mold portion 26. An end portion of the flexible cable 27 drawn from the mold is connected to the fiscal control board 7. The length of the flexible cable 27 is preferably shorter than the length of the wiring sheet 16 in the front-rear direction Y and longer than the length of the front-rear direction Y including the wide portion 101 and the first protrusion 102.

(Effects of wiring sheet)
In this example, when the wiring sheet 16 is cut by a blade or the like, the first wiring 21 or the second wiring 22 stretched around the wiring sheet 16 is disconnected. When the wiring sheet 16 is opened, the first wiring portion 61, the second wiring portion 62, and the conduction wiring 63 in the first wiring 21 are separated from each other, and the first wiring 21 is disconnected. When the wiring sheet 16 is opened, the first wiring portion 61, the second wiring portion 62, and the conduction wiring 63 in the second wiring 22 are separated from each other, and the second wiring 22 is disconnected.

  Furthermore, when the wiring sheet 16 is opened, the wiring sheet 16 and the flexible cable 27 interfere with each other. Therefore, when the wiring sheet 16 is forcibly opened, the opening edge 65a of the first slit 65 and the opening edge 66a of the second slit 66 through which the flexible cable 27 passes are damaged, and the first wiring 21 and the second wiring 22 are damaged. Breaks.

  Further, in this example, after the flexible cable 27 is routed inside the sheet portion 111, the wiring sheet 16 is connected via the second slit 66 of the third protrusion 104 and the first slit 65 of the second protrusion 103. It is pulled out to the outside (see FIGS. 7A to 7D). Accordingly, when the flexible cable 27 is pulled, the wires 21 and 22 are easily disconnected.

  That is, if the flexible cable 27 is routed in this way, the sheet portion 111 is moved away from the memory substrate 15 when the flexible cable 27 is pulled away from the memory substrate 15. Here, when the sheet portion 111 moves in a direction away from the memory substrate 15, the third protrusion 104 located outside thereof moves in a direction away from the memory substrate 15. 27, the opening edge 66a of the second slit 66 is easily damaged. Further, when the sheet portion 111 moves in a direction away from the memory substrate 15, the second protrusion 103 located outside thereof moves in a direction away from the memory substrate 15. Therefore, in the second protrusion 103, the opening edge 65a of the first slit 65 is likely to be damaged due to the interference with the flexible cable 27.

  In addition, when the first wiring portion connecting portion 61a of the first wiring portion 61 and the conductive wiring 63 are integrally formed in each of the wirings 21 and 22, and the wiring sheet 16 is folded, the first connecting portion and the first connecting portion are integrated. The second wiring part connecting portions 62a of the two wiring parts 62 may be overlapped and connected. On the contrary, when the wiring sheet 16 is folded when the second wiring portion connecting portion 62a of the second wiring portion 62 and the conductive wiring 63 are integrally formed in each of the wirings 21 and 22, the connecting portions are integrated with each other. And the second wiring part connecting part 62a of the first wiring part 61 may be overlapped and connected.

  Further, instead of the double-sided tape 106, a conductive adhesive may be used.

1 ・ ・ Printer, 2 ・ Printer body, 3 ・ Fiscal module, 4 ・ Case, 5 ・ ・ Frame, 6 ・ Printer control board, 7 ・ Fiscal control board (second circuit board), 8 ・ ・Memory module, 9 ... Connector, 10 ... Open / close lid, 11 ... Open / close lid, 12 ... Receipt outlet, 13 ... Slide button, 15 ... Memory board (first circuit board), 15a ... 1st Surface, 16 ... Wiring sheet, 17 ... EJ memory, 18 ... Fiscal memory (memory), 19 ... First connector, 20 ... Second connector, 21 ... First wiring (wiring), 22 ... 2nd wiring (wiring), 25 ... Box, 26 ... Mold part, 27 ... Flexible cable (cable), 28 ... Flexible cable, 31 ... Printer control CPU, 3 .... Fiscal control main CPU, 34 ... Program falsification confirmation CPU, 35.ROM, 36.RAM, 37.Fiscal control board side RTC, 38 ... Battery, 41 ... Fiscal control sub CPU 42 .. Memory board side RTC (detection unit) 43.. Wiring sheet connection unit 45.. EJ information generation unit 46. Fiscal information generation unit 47.. Transmission unit 51.. NV memory 52 ..Random number generator 53, Setting unit 55, First register 56, Second register 61, First wiring part 61a, First wiring part connection part 62, Second wiring Part 62a ··· second wiring part connecting part 63 ··· wiring for conduction 65 ·· first slit 66 · · second slit 71 to 74 · · first to fourth terminals 75 to 78 · · · First to fourth memory board side 81 .... first substrate side wiring, 82 ... second substrate side wiring, 83 ... FET, 84 ... third substrate side wiring, 85 ... resistance, 101 ... wide part, 102 ... first Projection part 103 ... Second projection part (first sheet part) 104 ... Third projection part (second sheet part) 105 ... Fourth projection part 106 ... Double-sided tape 110 ... Sheet part 111..Sheet part (third sheet part), D..drain, G..gate, S..source, L0..imaginary line, L1-L4..first to fourth folding lines, X .. Width direction, Y ·· Front / rear direction, Z ·· Up / down direction

Claims (7)

A first circuit board comprising a memory;
A second circuit board;
A wiring sheet comprising wiring and enclosing the first circuit board;
A detection unit for detecting an abnormality in the wiring;
A cable connecting the first circuit board and the second circuit board;
The wiring sheet includes a first sheet portion folded at a position overlapping the first circuit board when viewed from the thickness direction of the first circuit board,
The first sheet portion includes a first slit surrounded by the wiring,
The module, wherein the cable is inserted from the first circuit board through the first slit and connected to the second circuit board. In claim 1,
The wiring sheet includes a second sheet portion folded between the first circuit board and the first sheet portion,
The second sheet portion includes a second slit surrounded by the wiring,
The module is characterized in that the cable is led out of the wiring sheet from the first circuit board through the second slit and the first slit. In claim 2,
The wiring sheet includes a third sheet portion folded between the first circuit board and the second sheet portion,
The module, wherein the cable is led out of the wiring sheet from between the first circuit board and the third sheet portion through the second slit and the first slit. In any one of claims 1 to 3,
The module, wherein the detection unit includes a storage unit that records the abnormality of the wiring and is mounted on the first circuit board. In claim 4,
The second circuit board includes a battery.
The wiring sheet is connected to the first circuit board;
The detection unit is supplied with power from the battery via the cable and the wiring. In claim 5,
The detection unit is an RTC. A module according to any one of claims 1 to 6;
A printing unit that executes printing based on print data for issuing a receipt,
The second circuit board includes a fiscal information generating unit that generates fiscal information based on the print data for issuing the receipt, and the fiscal information is stored in the first circuit board in order to store the fiscal information in the memory. A printer comprising: a transmission unit for transmitting.

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