Store bill printer with code scanning function

Abstract

The utility model discloses a shop bill printer with a code scanning function, which overcomes the problems of single function, high equipment hardware cost and inconvenience in operation of the printer in the prior art, and comprises a printer body and a wireless communication module arranged in the printer body, and the wireless communication module is connected with a printer core. The printer core is connected with a stepping motor, a backlight plate is installed on the machine body, a code scanning camera is installed in the middle of the backlight plate, and the wireless communication module is connected with the code scanning camera. The system is directly connected with the cloud server, can independently complete the functions of code scanning and printing, reduces the hardware cost, saves the space, is high in recognition capability of the camera, can achieve the quick recognition of code scanning in far and near distances, is convenient to operate, and improves the working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of line-type thermal printing, in particular to a store receipt printer with a code scanning function. Background Art

[0002] With the widespread use of QR codes, most businesses support electronic payments to improve the convenience of people's lives. In the process of electronic payment, you need to use a barcode scanner connected to the cash register to scan the QR code in the customer's mobile phone. After the cash register receives the payment, the printer connected to the cash register prints the receipt. Therefore, printers are also widely used in high-frequency offline payment scenarios such as retail, hotels, gas stations, schools, and restaurants, and are gradually penetrating into scenarios such as public transportation, hospitals, and tourist attractions.

[0003] However, existing printers only have the function of printing receipts and need to be equipped with barcode scanning terminal tools such as barcode scanning guns for use on computer terminals, which increases hardware equipment expenses, is inconvenient to operate, and reduces work efficiency. Utility Model Content

[0004] The purpose of the utility model is to overcome the problems in the prior art of single printer function, high equipment hardware cost and inconvenient operation, and provide a store receipt printer with a code scanning function, which is directly connected to a cloud server and can independently complete the code scanning and printing functions, thereby reducing hardware costs and saving space. The camera has high recognition ability, and the code scanning can be quickly recognized at long and short distances. The operation is convenient and work efficiency is improved.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it includes a body and a wireless communication module installed inside the body, the wireless communication module is connected to a printing mechanism, the printing mechanism is connected to a stepping motor, a backlight panel is installed on the body, a code scanning camera is installed in the middle of the backlight panel, and the wireless communication module is connected to the code scanning camera.

[0006] The store receipt printer with code scanning function can directly connect to the cloud server through the wireless communication module, receive information sent by the cloud server, and complete instant printing. A single store receipt printer can complete the functions of a code scanning gun, terminal, and printer, reducing hardware costs and saving space. The camera is positioned by punching a hole in the middle of the backlight panel to make the light even and symmetrical, thereby improving the recognition ability of the camera, so that the code can be quickly recognized at long and short distances. The product printing is driven by a brushless magnetic excitation stepper motor, which is small in size, light in weight, and has a printing speed of up to 80mm / s. And for takeaway merchants, the store receipt printer with code scanning function provided by the utility model can independently complete order taking without auxiliary equipment such as WIFI, mobile phones, cash registers, and computers, which improves the reliability of order taking and reduces the investment cost of order taking.

[0007] Preferably, the backlight panel comprises a bracket, the code scanning camera is installed in the middle of the bracket, a light guide plate is installed on the bracket, a fill light bowl is installed on the light guide plate, and a lens is installed on the fill light bowl.

[0008] The fill light bowl can make the light spot more even and soft, without black holes or yellow circles, and has high reflective efficiency, no delamination, and high temperature resistance, thereby improving the camera's recognition ability.

[0009] Preferably, the wireless communication module is a main control unit and adopts an EC600G chip.

[0010] The wireless communication module uses the EC600G chip, which is the core component of the product and serves as the main control unit of the product to control the working status of other peripheral devices. It does not require a single-chip microcomputer as a control unit, further reducing costs.

[0011] Preferably, it further comprises a voice playing unit, which comprises a power amplifier unit and a speaker connected to the power amplifier unit, the power amplifier unit is connected to the wireless communication module, and the speaker is installed at the bottom of the body.

[0012] The wireless communication module transmits the audio signal to the power amplifier unit, and the power amplifier unit amplifies the audio signal and transmits it to the speaker to realize voice broadcast.

[0013] Preferably, the printer mechanism comprises a rotating shaft and a highly wear-resistant, high and low temperature resistant plastic gear sleeved on the rotating shaft.

[0014] The use of highly wear-resistant, high and low temperature resistant special engineering plastic gears and shafts makes the transmission stable and reliable with extremely low noise.

[0015] Preferably, it further comprises a key unit, and the key unit is connected to the wireless communication module via a GPIO port.

[0016] The key unit includes four light-touch keys for volume increase, volume decrease, printing and paper ejection.

[0017] Preferably, a WIFI module is further included, and the WIFI module is connected to the wireless communication module.

[0018] When there is no 4G network available, WIFI connection can be used.

[0019] The function is preferred, and further comprises a power supply module, and the power supply module is connected to the wireless communication module through an LDO step-down unit.

[0020] An external 9V 2A switching power supply is used to power the corresponding devices after being stepped down by LDO.

[0021] Preferably, the backlight panel light source is a high-brightness white LED lamp.

[0022] High-brightness white LED is used as the light source, and a hole is punched in the middle of the backlight panel to position the camera, making the light even and symmetrical, thereby improving the camera's recognition ability and enabling quick identification of scanned codes at long and short distances.

[0023] Preferably, the LDO step-down unit includes a first step-down unit connected to the wireless communication module, a second step-down unit connected to the camera, and a third step-down unit connected to the printing mechanism.

[0024] Therefore, the utility model has the following beneficial effects:

[0025] 1. By setting up a wireless communication module and a camera on the printer, and using the wireless communication module as a control unit to control the working status of other peripheral devices, the camera is used to scan the code, and it is directly connected to the cloud server through the wireless communication module to receive the information sent by the cloud server and complete instant printing; a single store receipt printer can complete the functions of a code scanner, terminal, and printer, reducing hardware costs and saving space.

[0026] 2. A hole is punched in the middle of the backlight panel to position the camera, making the light even and symmetrical, thereby improving the camera's recognition ability and enabling quick identification of scanned codes at long and short distances.

[0027] 3. The product printing is driven by a brushless magnetic excitation stepper motor, which is small in size, light in weight, and has a printing speed of up to 80mm / s. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the circuit structure of the utility model.

[0029] Figure 2 It is a schematic diagram of the circuit structure of the first voltage-reducing unit in the utility model.

[0030] Figure 3 It is a circuit structure diagram of the second voltage-reducing unit in the utility model.

[0031] Figure 4 It is an exploded view of the overall structure of the utility model.

[0032] In the figure: 1. wireless communication module; 2. printer mechanism; 3. print control unit; 4. code scanning camera; 5. power amplifier unit; 6. speaker; 7. touch switch; 8. communication component; 9. storage unit; 10. first step-down unit; 11. second step-down unit; 12. third step-down unit; 13. power module; 14. WIFI module; 15. status indicator light; 16. network indicator light; 17. antenna unit; 18. lens; 19. fill light bowl; 20. upper shell; 21. first silicone pad; 22. light guide plate; 23. screw; 24. bracket; 25. counterweight; 26. silicone sleeve; 27. finished circuit board; 28. SIM card cover; 29. ​​power switch; 30. middle frame; 31. line card; 32. paper tearing steel sheet; 33. EVA; 34. paper bin cover; 35. speaker bracket; 36. bottom shell; 37. second silicone pad. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0034] Embodiment 1:

[0035] This embodiment provides a store receipt printer with a code scanning function, including a body and a circuit structure installed in the body, the circuit structure is as follows: Figure 1 As shown, it includes: a wireless communication module 1, a printer mechanism 2, a print control unit 3, a code scanning camera 4, a voice broadcast unit, a touch switch 7, a communication component 8, a storage unit 9, an LDO buck unit, an RGB unit, a power module 13, a WIFI module 14 and an antenna unit 17. The power module is connected to the LDO buck unit, and the LDO buck unit is respectively connected to the wireless communication module, the WIFI module, the code scanning camera, the print control unit, and the printer mechanism. The wireless communication module is respectively connected to the WIFI module, the code scanning camera, the print control unit, the antenna unit, the RGB unit, the voice broadcast unit, the storage unit, the communication component, and the touch switch.

[0036] When working, the scanning camera is used to scan the QR code and send the collected QR code to the wireless communication module. The wireless communication module sends the printing information to the printing mechanism through the printing control unit, and the printing mechanism performs printing.

[0037] Specific:

[0038] The LDO step-down unit includes a first step-down unit 10, a second step-down unit 11 and a third step-down unit 12. The first step-down unit is respectively connected to the power module, the second step-down unit and the wireless communication module, the second step-down unit is respectively connected to the WIFI module, the code scanning camera and the printing control unit, and the third step-down unit is respectively connected to the power module and the printer mechanism. In this embodiment, the first step-down unit adopts a DCDC step-down chip of the ME3113 model, the second step-down unit adopts a DCDC step-down chip of the RY3415 model, and the third step-down unit adopts a DCDC step-down chip of the ME3113 model.

[0039] The first step-down unit steps down the 9V 2A DC power provided by the power module to 3.8V DC power to supply the wireless communication module and the second step-down unit. It uses the ME3113 DC-DC step-down chip. Its circuit structure is as follows: Figure 2 shown.

[0040] The second step-down unit steps down the 3.8V DC power from the first step-down unit to 3.3V DC power to supply the WIFI module, the barcode scanning camera and the printing control unit; the RY3415 DC-DC step-down chip is used, and its circuit structure is as follows: Figure 3 shown.

[0041] The third step-down unit steps down the 9V 2A DC power provided by the power module into 8.5V DC power to supply the printer mechanism. It uses a DC-DC step-down chip of model ME3113, and its circuit structure is the same as that of the first step-down unit.

[0042] The RGB unit includes a status indicator 15 and a network indicator 16. The status indicator is used to indicate the power connection status of the store receipt printer. If the power is connected, the status indicator lights up green. If the power is not connected, the status indicator is off. The network indicator is used to indicate the network connection status of the store receipt printer. If it is connected to a 4G network, the network indicator lights up green. If it is connected to a WIFI network, the network indicator lights up yellow. If it is not connected to the network, the network indicator lights up red.

[0043] Based on the RGB unit, the power connection status and network connection status of the store receipt printer can be known. The instructions are clear and easy for staff to see.

[0044] The voice broadcast unit includes a power amplifier unit 5 and a loudspeaker 6. The power amplifier unit is connected to the wireless communication module, and the loudspeaker is connected to the power amplifier unit.

[0045] The wireless communication module transmits the audio signal to the power amplifier unit, which amplifies the audio signal and sends the amplified audio signal to the speaker, which plays the audio signal. In this embodiment, the power amplifier unit uses a CS5230 power amplifier chip.

[0046] In this embodiment, the storage unit adopts 8MB of FLASH memory, the WIFI module adopts the AI-WB2-12S chip, and the code scanning camera adopts the ZC-HK-20A6 camera; the print control unit adopts the AT32F415CBT7 MCU; the printer movement adopts a high-speed line thermal printer movement, and the product printing is driven by a brushless magnetically excited stepper motor. It has a small size, light weight, and a printing speed of up to 80mm / s. It uses high-wear-resistant, high and low temperature resistant special engineering plastic gears and shafts.

[0047] The overall structure of the store receipt printer with code scanning function provided in this embodiment is as follows: Figure 4 As shown, it includes an upper shell 20, a middle frame 30, a bottom shell 36, a second silicone pad 37, a scanning unit, a printing unit and a voice playing unit. The upper shell 20 is connected to the top of the middle frame, the bottom shell is connected to the bottom of the middle frame, the second silicone pad is installed on the bottom shell, the upper cover, the middle frame and the bottom shell constitute a body, the scanning unit, the printing unit and the voice playing unit are installed inside the body, the scanning unit is installed above the printing unit, and the voice playing unit is installed below the printing unit.

[0048] Specific:

[0049] The scanning unit includes a lens 18, a fill light bowl 19, a bracket 24, a code scanning camera, a light guide plate 22, screws 23, and a silicone sleeve 26. The fill light bowl, the bracket, the code scanning camera, the light guide plate, the screws, and the silicone sleeve are all installed inside the upper shell, and the lens is installed on the upper surface of the upper shell; a through hole is provided in the middle of the bracket, the light guide plate, and the fill light bowl, the code scanning camera is installed on the bracket and the silicone sleeve is installed on the code scanning camera, the light guide plate is installed on the bracket by screws, the fill light bowl is installed on the light guide plate, and the lens is installed on the fill light bowl.

[0050] A first silicone pad 21 is installed on the left side of the upper shell, and a touch switch is installed on the right side of the upper shell.

[0051] The printing unit includes a finished circuit board 27, a wire card 31, a printer mechanism, a paper tearing steel sheet 32, screws and a paper bin cover 34. The circuit board, the printer mechanism, the paper tearing steel sheet and the screws are installed in the middle frame. The paper bin cover is installed on the side of the middle frame, located below the touch switch. The wire card is installed on the middle frame by screws. The printer mechanism is connected to the paper tearing steel sheet and the finished circuit board, and the finished circuit board is connected to the code scanning camera.

[0052] A SIM card cover 28 and a power switch 29 are also mounted on the middle frame.

[0053] The voice playback unit is also installed inside the middle frame, below the finished circuit board. The voice playback unit includes a counterweight 25, a speaker bracket 35, a speaker, screws, and EVA 33. The counterweight is installed below the finished circuit board, the speaker bracket is installed on the counterweight, the speaker is installed on the speaker bracket, and there are two EVAs, one installed on the speaker and the other installed at the bottom of the counterweight.

[0054] In this embodiment, the index data used by the lens is 64*64*1mm / PC material / transparent partial adhesive; the index data used by the fill light bowl is 60.7*60.7*36.8mm / ABS material / frosted translucent; the index data used by the upper shell is 116*116*36.8mm / ABS / gray / mirror / UL94-V1; the index data used by the touch switch is 74.1*19.1*0.2mm / PC / silk screen / partial adhesive ; The index data of the first silicone pad is 70.6*6.5*1.5mm silicone / gray hardness 70 degrees / single-sided adhesive 3M-9080; the index data of the light guide plate is 55.6*46*1.8mm / light guide plate / wire L=40mm / 2PIN male connector; the index data of the bracket is 64.4*50.1*11.3mm / ABS / white / UL94-V1; the index data of the code scanning camera is ZC-HK-20A6 S1.0 / 6.5*6.5*2.0mm / with 50mm length 16Pin; the index data of the silicone sleeve is 10.2*10.2*2.1mm / silicone / black / 60 degrees; the index data of the finished circuit board is Gordon / A1 finished circuit board / REACH; the index data of the SIM card cover is 34*5*7.3mm / PC+ABS-TPU / white matte TPU hardness 800 degrees; the index data of the power switch is the boat switch / 15* 10.5*11.8mm / white shell / 2 feet 2 blocks / flame retardant; the index data of the middle frame is 116*116*119mm / ABS / white / UL94-V1 / silk screen; the index data of the line card is 23.8*12.8*5.3mm / ABS / white / UL94-V1; the index data of the printer core is JX-2R-05 thermal micro printer / with 50mm long 30Pin FPC lead wire; the index data of the tear sheet is Elva (Printer) / 65*11*2.2mm / stainless steel / sus304t=0.3mm; the index data of the paper bin cover is 116*95.5*29mm / ABS / white / UL94-V1; the index data of the speaker bracket is 107.6*83.9*21.8mm / ABS / white / UL94-V1; the index data of the counterweight is φ15*50mm / 45# steel / white zinc plating / 65g; the index data of the EVA installed on the counterweight is Danal / φ13.8*1.2mm / black / single-sided self-adhesive / material hardness 60 degrees; the index data of the EVA installed on the speaker is φ47*1mm / black / single-sided self-adhesive / hardness 45 degrees; the index data of the speaker is 40mm Mylar / height 5.2mm / 8ohm / 1.5W / f0550Hz; the index data of the bottom shell is 112.1*112.1*17mm / ABS / grey / UL94-V1; the index data of the second silicone pad include 13.8* 13.8*2mm / silicone / grey / hardness 70 degrees / single-sided adhesive 3M-9080 and 19.8*9.8*2mm / silicone / grey / hardness 70 degrees / single-sided adhesive 3M-9080. .

[0055] The index data of the screws include 3*10mm / PA round head screws, 1.7*4mm / PA round head / white zinc plated / hardened screws, 2*5mm / PB / round head / white / electroplating / hardened screws and 2.6*8 / self-tapping round head white / electroplating / hardened screws.

[0056] When using a store receipt printer:

[0057] 1) Power on: The product has an external rocker-shaped switch on the back of the product. Press the rocker-shaped power switch to the "I" position, the status indicator lights up, the network indicator flashes, and the status information is broadcast.

[0058] 2) Networking: After normal startup, the device will automatically connect to the network (the green indicator light flashes). If the network connection is successful, "Networking successful" will be announced immediately and the green indicator light will be on. (Connect to the 4G network first. If the 4G network cannot be connected, connect to the WIFI network).

[0059] 3) Binding: After successfully connecting to the Internet, scan the QR code at the bottom of the speaker to bind. After the communication with the cloud server is completed, you can start payment.

[0060] 4) Payment: The consumer scans the payment code to make payment. After the payment is successful, the cloud server sends a message to the product, and the product broadcasts the corresponding information such as xx yuan received.

[0061] 5) Print: Print relevant transaction information as needed and scan the code to confirm.

[0062] The store receipt printer with code scanning function can directly connect to the cloud server through the wireless communication module, receive information sent by the cloud server, and complete instant printing. A single store receipt printer can complete the functions of code scanning gun, terminal, and printer, reducing hardware costs and saving space. The camera is positioned by punching holes in the middle of the backlight panel to make the light even and symmetrical, thereby improving the camera's recognition ability and enabling quick recognition of code scanning at long and short distances.

[0063] Embodiment 2:

[0064] This embodiment provides a store receipt printer with a code scanning function, which can be used in the takeaway industry, including a machine body and a circuit structure installed in the machine body, the circuit structure is as follows: Figure 1As shown, it includes: a wireless communication module, a printer mechanism, a print control unit, a code scanning camera, a voice broadcast unit, a touch switch, a communication component, a storage unit, an LDO step-down unit, an RGB unit, a power module, a WIFI module and an antenna unit. The power module is connected to the LDO step-down unit, and the LDO step-down unit is respectively connected to the wireless communication module, the WIFI module, the code scanning camera, the print control unit and the printer mechanism. The wireless communication module is respectively connected to the WIFI module, the code scanning camera, the print control unit, the antenna unit, the RGB unit, the voice broadcast unit, the storage unit, the communication component and the touch switch.

[0065] With the rapid development of the Internet, takeout accounts for an increasingly high proportion in the retail industry. Catering takeout, fresh food takeout, supermarket takeout, and medicine takeout are all accepted by everyone. Merchants receive hundreds of orders every day. If they are not careful, it is easy to miss orders or make wrong orders. The store receipt printer with code scanning function provided in this embodiment can make up for this deficiency, serve merchants well, and become a caring and effective helper for merchants.

[0066] Specifically, the store receipt printer with code scanning function provided in this embodiment includes:

[0067] 1) Wireless communication module: designed with 4G mobile communication network CAT.1 communication technology.

[0068] The wireless communication of the store receipt printer adopts the EC600G-CN chip, supports TDD-LTE / FDD-LTE / GSM / GPRS and other working frequency bands, provides a wider connection range and reliable data communication, supports up to 10Mbps uplink rate and 5Mbps downlink rate, and provides fast connection and stable data interaction for the store receipt printer, so that the store receipt printer can receive orders in real time without missing in various scenarios.

[0069] 2) Thermal printer mechanism: High-speed line-type thermal printer mechanism design.

[0070] The store receipt printer is driven by a brushless magnetic excitation stepper motor, which is small in size, light in weight, and has a printing speed of up to 80mm / s. At the same time, it uses high wear-resistant, high and low temperature resistant special engineering plastic gears and shafts to make the transmission stable and reliable with extremely low noise. In addition, the store receipt printer supports a variety of printing formats, including Chinese characters, ASCII characters, one-dimensional barcodes, two-dimensional barcodes, and graphic patterns, etc., which can meet the various printing content requirements of merchants' takeaway orders.

[0071] 3) Unique backlight design of HD camera.

[0072] The store receipt printer uses a high-brightness white LED as a light source, and a hole is punched in the middle of the backlight panel to position the camera, making the light even and symmetrical, thereby improving the camera's recognition ability and enabling the store receipt printer to quickly identify the code at long and short distances.

[0073] Among them, the 4G wireless communication adopts the EC600G chip, which is the core component of the store receipt printer with code scanning function, and is used as the main control unit of the store receipt printer to control the working status of other peripheral devices.

[0074] The peripheral devices are mainly composed of the following parts:

[0075] 1) WIFI wireless connection: AI-WB2-12S is a 2.4G WIFI module that communicates directly with the EC600G chip. When there is no 4G network available, WIFI connection can be used.

[0076] 2) Camera code scanning and recognition: ZC-HK-20A6 is a camera module that realizes photoelectric conversion and directly feeds the collected code scanning information back to the EC600G chip, which analyzes and processes the data.

[0077] 3) Thermal printing: The EC600G chip transmits the printing information to the thermal print head through the MCU AT32F415CBT7, and the print head prints out the received information.

[0078] 4) Audio broadcast: The EC600G chip transmits the audio signal to the power amplifier chip CS5230, which amplifies the audio signal and transmits it to the speaker to realize voice broadcast.

[0079] 5) Button control: Four touch buttons are connected to EC600G through the GPIO port to realize volume increase, volume decrease, print and paper output respectively.

[0080] 6) LED display: Two RGB chips are connected to the EC600G chip through the GPIO port to display various working states. The LED display can be set to use different colors of LED to represent various states of the product.

[0081] 7) Communication component eSIM: external Micro SIM card slot, replaceable SIM card.

[0082] 8) Storage unit: External 8M Flash, used for storing information.

[0083] 9) The product has an external 9V 2A switching power supply, which is stepped down by LDO to power the corresponding devices.

[0084] After the product is connected to the Internet, the EC600G chip analyzes and processes the Internet information received through the FPC antenna, and pushes the audio signal to the power amplifier chip. The power amplifier chip amplifies the signal and drives the speaker to implement voice broadcast. At the same time, the EC600G chip also transmits transaction information data to the MCU AT32F415CBT7. The MCU performs data exchange processing and then transmits it to the thermal printer to print the corresponding information content.

[0085] The store receipt printer with a code scanning function provided in this embodiment is directly connected to the cloud server through the mobile operator network, and can receive information sent by the server at any time (including system notifications, order information, business statistics, etc.), and complete instant voice notifications or printing, etc. In addition, the store receipt printer with a code scanning function can independently complete order taking without WIFI, mobile phones, cash registers, computers and other auxiliary equipment, thereby improving the reliability of order taking and reducing the investment cost of order taking.

[0086] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A store receipt printer with code scanning function, characterized in that: It includes a body and a wireless communication module installed inside the body, the wireless communication module is connected to a printer mechanism, the printer mechanism is connected to a stepper motor, a backlight panel is installed on the body, a code scanning camera is installed in the middle of the backlight panel, and the wireless communication module is connected to the code scanning camera.

2. A store receipt printer with code scanning function according to claim 1, characterized in that: The backlight panel comprises a bracket, the code scanning camera is installed in the middle of the bracket, a light guide plate is installed on the bracket, a fill light bowl is installed on the light guide plate, and a lens is installed on the fill light bowl.

3. A store receipt printer with code scanning function according to claim 1 or 2, characterized in that: The wireless communication module is the main control unit and adopts the EC600G chip.

4. A store receipt printer with code scanning function according to claim 1, characterized in that: It also includes a voice playing unit, which includes a power amplifier unit and a speaker connected to the power amplifier unit. The power amplifier unit is connected to the wireless communication module, and the speaker is installed at the bottom of the body.

5. A store receipt printer with code scanning function according to claim 1, 2 or 4, characterized in that: The printer core comprises a rotating shaft and a highly wear-resistant, high and low temperature resistant plastic gear sleeved on the rotating shaft.

6. A store receipt printer with code scanning function according to claim 1, 2 or 4, characterized in that: It also includes a key unit, which is connected to the wireless communication module through a GPIO port.

7. A store receipt printer with code scanning function according to claim 1, 2 or 4, characterized in that: It also includes a WIFI module, which is connected to the wireless communication module.

8. A store receipt printer with code scanning function according to claim 1, 2 or 4, characterized in that: It also includes a power supply module, which is connected to the wireless communication module through an LDO step-down unit.

9. A store receipt printer with code scanning function according to claim 1 or 2, characterized in that: The backlight panel light source is a high-brightness white LED lamp.

10. A store receipt printer with code scanning function according to claim 8, characterized in that: The LDO step-down unit includes a first step-down unit connected to the wireless communication module, a second step-down unit connected to the camera, and a third step-down unit connected to the printing mechanism.

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