JP2018116489A - POS system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a POS system capable of accurately grasping deficiency in remaining quantity of receipt paper.SOLUTION: A POS system includes: a commodity registration machine for executing registration processing of a commodity; and a price payment machine for executing payment processing of a price on the basis of price data generated by execution by the registration processing. The price payment machine includes: a printer 310 for printing on receipt paper R; a sensor 330 for detecting deficiency in remaining quantity of the receipt paper R during a period from end of printing in the printer 310 to start of next printing; and a display part for outputting notification information for notifying the deficiency in remaining quantity of the receipt paper R when the sensor 330 detects the deficiency in remaining quantity of the receipt paper R by at least two or more predetermined times.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a POS (Point of Sales) system.

  There is known a POS system that includes a product registration machine that executes a product registration process and a price payment machine that executes a payment process based on the price data generated by the execution of the registration process (for example, a patent). Reference 1). In the POS system, a store clerk operates a product registration machine, and a customer operates a price payment machine, thereby reducing the time required for payment. In such a payment machine, for example, as described in Patent Document 2, a payment amount is printed on a receipt sheet such as a thermal roll sheet by a printer and a receipt (accounted receipt) is issued.

JP 2013-242839 A JP 2015-24554 A

  In recent years, it has been considered that the above-described POS system is equipped with a sensor for detecting an insufficient remaining amount of receipt paper. However, in this case, when the receipt paper is shaken (for example, when a roll-type thermal roll paper is exposed), the detection accuracy of the sensor is lowered, and the receipt paper is insufficiently short. It may be difficult to grasp.

  Accordingly, an object of the present invention is to provide a POS system that can accurately grasp the shortage of the remaining amount of receipt paper.

  A POS system according to the present invention includes a commodity registration machine that executes registration processing of goods, and a price payment machine that executes payment processing based on price data generated by execution of the registration processing. The printer that prints on receipt paper, the sensor that detects the shortage of receipt paper between the end of printing in the printer and the start of the next printing, and the sensor that detects the shortage of receipt paper And a notification unit that outputs notification information notifying that there is insufficient receipt paper remaining when a predetermined number of times is detected at least twice.

  In this POS system, notification information is not output immediately when a shortage of receipt paper is detected by the sensor, but is output when a shortage of receipt paper is detected a predetermined number of times by the sensor. The Therefore, it is possible to increase the certainty of the detection result that the receipt paper is insufficient, and to accurately grasp the shortage of the remaining amount.

  In the POS system of the present invention, the notification unit may display, as notification information, a sign for a clerk informing that the receipt paper is insufficient on the screen of the display unit of the payment machine. This makes it possible to notify the store clerk that the receipt sheet is short of remaining so that it is difficult for the customer to notice.

  In the POS system of the present invention, a plurality of price payment machines are provided, and the execution of payment processing is possible in one price payment machine that has performed communication with the product registration machine among the plurality of price payment machines, When the sensor detects that the remaining amount of receipt paper is insufficient, the merchandise registration machine may lower the priority of communication with the payment machine having the sensor. Accordingly, it is possible to reduce the possibility that the payment process is executed in the payment machine in which the shortage of the receipt paper is detected by the sensor.

  In the POS system of the present invention, a plurality of price payment machines are provided, and the execution of payment processing is possible in one price payment machine that has performed communication with the product registration machine among the plurality of price payment machines, When the sensor detects a shortage of the remaining amount of receipt paper a predetermined number of times, the merchandise registration machine may prohibit communication with the payment machine having the sensor. Thereby, it is possible to prohibit the payment processing from being executed in the payment machine in which the shortage of the remaining amount of the receipt paper is accurately grasped.

  In the POS system of the present invention, the payment machine has a usage amount detection unit that detects the usage amount of the receipt paper after the sensor detects that the remaining amount of the receipt paper is insufficient, and the notification unit is a usage amount detection unit. When the usage amount detected in (1) exceeds a predetermined amount, notification information may be output. In this case, when the shortage of the remaining amount of the receipt paper is detected by the sensor, the notification information is output when the receipt paper is used beyond a predetermined amount thereafter. Therefore, it is possible to reliably grasp the shortage of receipt paper.

  According to the present invention, it is possible to provide a POS system that can accurately grasp the shortage of the remaining amount of receipt paper.

It is a block diagram which shows the structure of the POS system of one Embodiment of this invention. It is a block diagram which shows the structure of the goods registration machine of the POS system of FIG. It is an external appearance perspective view of the goods registration machine of FIG. It is a block diagram which shows the structure of the price payment machine of the POS system of FIG. It is an external appearance perspective view of the price payment machine of FIG. It is a sequence diagram which shows the operation example of the POS system of FIG. FIG. 5 is a perspective view for explaining receipt paper setting in the printer of the payment machine in FIG. 4. (A) is a figure explaining the detection of the sensor when the receipt paper is not short of the remaining amount. (B) is a diagram for explaining the detection of the sensor when the receipt paper is insufficient.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 1, the POS system 1 includes a store controller (higher level device) 10, a plurality of product registration machines 20, and a plurality of price payment machines 30. The store controller 10, each merchandise registration machine 20, and each price payment machine 30 are connected to each other by a wired or wireless LAN (Local Area Network) 2. The POS system 1 is a semi-automatic POS system built in a store such as a supermarket. That is, in the POS system 1, each product registration machine 20 is operated by a store clerk to execute a product registration process, and each price payment machine 30 is operated by a customer to generate the price data generated by executing the registration process. Based on the payment processing of the price. The store clerk includes employees and users of the store where the POS system 1 is introduced, and in a broad sense includes related businesses of the store. A customer includes a person who purchases and / or purchases a product. In a broad sense, the customer includes a person who gives and / or receives a price to a store.

  The store controller 10 is a computer that controls the POS system 1 and manages various information such as a product master. The store controller 10 is communicable with each product registration machine 20 and each price payment machine 30, and appropriately transmits a product master to each product registration machine 20 and each price payment machine 30. The product master is a file that stores product information about each product (product identification information, information about the product name and sales price, etc.). The product master is updated as appropriate.

  As shown in FIG. 2, the merchandise registration machine 20 includes a CPU (Central Processing Unit) 201, a ROM (Read Only Memory) 202, a RAM (Random Access Memory) 203, a scanner 204, and a store clerk display unit 205. A customer display unit 206, an operation unit 207, a communication unit 208, a speaker 209, and a printer 210. These are connected to each other by a bus 215. The appearance of the merchandise registration machine 20 is as shown in FIG.

  The CPU 201 controls the operation of the commodity registration machine 20 by reading and executing a program stored in the ROM 202. The ROM 202 stores a program for controlling the operation of the product registration machine 20. The RAM 203 stores the product master transmitted from the store controller 10, the product information acquired from the product master based on the barcode (product code) read by the scanner 204, and information related to the operation history as needed.

  The scanner 204 optically reads a barcode or the like attached to a product. The store clerk display unit 205 displays to the store clerk the product name and sales price corresponding to the barcode read by the scanner 204. The customer display unit 206 displays to the customer the product name and sales price corresponding to the barcode read by the scanner 204. In addition, the display part 205 for shop assistants and the display part 206 for customers comprise a touch panel, and also function as an operation part.

  The operation unit 207 has various operation buttons (such as a subtotal key, a current total key, a numeric key, a correction key, and a preset key) for operating the commodity registration machine 20. The communication unit 208 communicates with other devices via the LAN 2. The speaker 209 outputs the operation sound of the product registration device 20 and various sounds. The printer 210 appropriately prints various characters on a piece of paper and issues the piece of paper.

  In the merchandise registration machine 20 configured as described above, when the bar code attached to the merchandise that the customer intends to purchase is read by the scanner 204 under the operation of the store clerk, the merchandise information is acquired from the merchandise master by the CPU 201. Then, the price data is generated (execution of product registration process). The price data includes information on the unit price and quantity of all the products that the customer intends to purchase, the total price, and the like.

  Then, when the generated price data is acquired by any one price payment machine 30, the price payment machine 30 that acquired the price data among the plurality of price payment machines 30 (that is, the customer is charged for the price). The payment machine 30) to be paid is informed. In the merchandise registration machine 20, the customer display unit 206 and the printer 210 function as a notification unit. Specifically, the customer display unit 206 displays, for example, the identification number of the price payment machine 30 that has acquired the price data among the identification numbers assigned to the price payment machines 30. The printer 210 prints the identification number of the payment machine 30 that has acquired the price data, the barcode indicating the identification information of the price data, etc. on a piece of paper, and issues the piece of paper (accounting ticket).

  Note that the speaker 209 may function as a notification unit. In that case, the speaker 209 outputs the audio | voice which shows the identification number of the price payment machine 30 which acquired price data among the identification numbers attached | subjected to each price payment machine 30, for example. In the merchandise registration device 20, at least one of the customer display unit 206, the speaker 209, and the printer 210 can function as a notification unit.

  As shown in FIG. 4, the payment machine 30 includes a CPU 301, a ROM 302, a RAM 303, a scanner 304, a display unit 305, an operation unit 307, a communication unit 308, a speaker 309, a printer 310, A settlement unit 311, a sign pole 312, a human sensor 313, and a camera 314 are provided. These are connected to each other by a bus 315. The appearance of the payment machine 30 is as shown in FIG.

  The CPU 301 controls the operation of the payment machine 30 by reading and executing a program stored in the ROM 302. The ROM 302 stores a program for controlling the operation of the payment machine 30 and various data. The RAM 303 stores the product master transmitted from the store controller 10 and information on the operation history as needed.

  The scanner 304 optically reads a bar code or the like printed on an accounting ticket. The display unit 305 displays an operation procedure and the like for the customer to pay for the price. The display unit 305 also functions as an operation unit by configuring a touch panel.

  The operation unit 307 has various operation buttons (such as a correction key and a preset key) for operating the payment machine 30. The communication unit 308 communicates with other devices via the LAN 2. The speaker 309 outputs operation sound of the payment machine 30 and various sounds. When the customer pays the price, the printer 310 prints a list of purchased products, the amount of each product, the total payment amount, the received amount, the fishing amount, etc. on the piece of paper ( Issue a receipt).

  The settlement unit 311 has a bill insertion / discharge port 311a, a coin insertion port 311b, a coin discharge port 311c, a credit card insertion / discharge port 311d, an electronic money reader 311e, and a control unit (not shown) for controlling them. ing. The bill insertion / discharge port 311a, the coin insertion port 311b, and the coin discharge port 311c function as a cash settlement unit. The customer pays in cash through the cash settlement unit such as the bill insertion / discharge port 311a, pays in the credit card through the credit card reader, and pays in electronic money through the electronic money reader. At least one of the payments can be selected.

  The sign pole 312 notifies that the customer can perform an operation for paying the price and that some abnormality has occurred by turning on or blinking the indicator lights of a plurality of colors. The human sensor 313 detects a customer or the like existing in a predetermined area in front of the payment machine 30. The camera 314 images a customer or the like existing in a predetermined area in front of the payment machine 30.

  In the payment machine 30 configured as described above, when the price data generated by the execution of the registration process is acquired by the CPU 301, the price payment machine 30 (that is, the customer who has acquired the price data) It is notified that the price payment machine 30) to pay the price is its own machine. In the payment machine 30, the payment machine 30 that has acquired the price data by at least one of displaying characters and the like on the display unit 305, outputting sound by the speaker 309, and turning on the indicator lamp by the sign pole 312, It is notified that it is.

  The customer goes to the price payment machine 30 that has acquired the price data in accordance with the notification by the product registration machine 20 and the notification by the price payment machine 30 that has acquired the price data. When the customer who has entered the predetermined area in front of the payment machine 30 is detected by the human sensor 313, the display unit 305 starts displaying an operation procedure for the customer to pay the payment. At this time, sound output indicating the operation procedure is also started by the speaker 309. When the screen of the display unit 305 is touched by the customer, when any button of the operation unit 307 is pressed by the customer, and the customer who enters the predetermined area in front of the payment machine 30 is captured by the camera 314. At any time, display of the operation procedure may be started by the display unit 305, and output of sound indicating the operation procedure may be started by the speaker 309.

  In accordance with the display on the display unit 305 and the sound output from the speaker 309, the customer operates the price payment machine 30 via the operation unit 307 and the display unit 305 constituting the touch panel to pay the price. Specifically, when the customer causes the scanner 304 to read the barcode printed on the bill issued by the merchandise registration machine 20, a selection screen for selecting a settlement type is displayed on the display unit 305. The customer selects one of the payment types of cash, credit card, and electronic money on the display unit 305, or a plurality of payment types to be used together, and makes payment with the selected payment type in the payment unit 311. When payment is made by the customer, a receipt on which a list of purchased products, a payment amount, and the like are printed is issued by the printer 310.

  An operation example of the POS system 1 described above will be described with reference to FIG. Here, attention is focused on one product registration machine 20 </ b> A among the plurality of product registration machines 20. As a premise, it is assumed that the merchandise registration machine 20A permits acquisition of price data to three price payment machines 30A, 30B, and 30C among the plurality of price payment machines 30.

  First, for a product that a customer is about to purchase, when the store clerk starts operation of the product registration machine 20A (such as an operation that causes the scanner 204 to read a barcode attached to the product that the customer wants to purchase), the product registration machine 20A starts the registration process of goods (step S01). When the registration process ends (step S02), the merchandise registration machine 20A adds information indicating the price payment machines 30A, 30B, and 30C permitted to acquire the price data to the price data generated by the execution of the registration process. Then, the price data is transmitted to the store controller 10 (step S03). The store controller 10 receives the price data (step S04) and stores it.

  At this time, since the price payment machine 30 </ b> A is not paid for by another customer, the price payment machine 30 </ b> A executes price data acquisition processing for the store controller 10. Specifically, the price payment machine 30A monitors whether or not the price data to which the information indicating the own machine is added is stored in the store controller 10, and if the price data is stored, The controller 10 is requested to transmit the price data. On the other hand, in the price payment machines 30B and 30C, the payment is made by other customers, so the price payment machines 30B and 30C have not executed the price data acquisition process for the store controller 10. The payment process of the price started in the past (steps S05 and S06) is executed.

  Then, the store controller 10 transmits the price data generated in the merchandise registration machine 20A to the price payment machine 30A in accordance with the request from the price payment machine 30A (step S07). When the price payment machine 30A receives the price data transmitted from the store controller 10 (step S08), the price payment machine 30A transmits information indicating that the acquisition of the price data is completed to the merchandise registration machine 20A. As a result, among the multiple payment machines 30A, 30B, and 30C, the payment machine 30A can execute the payment process (the payment process based on the payment data generated in the product registration machine 20A). Become. That is, one of the plurality of payment machines 30A, 30B, 30C that has performed communication (including direct communication and indirect communication via the store controller 10) with the product registration machine 20A. In the price payment machine 30A, it is possible to execute the price payment process.

  In the commodity registration machine 20A, the price payment machine 30A (that is, the price payment machine 30 to which the customer should pay the price) is the price payment machine 30A that has acquired the price data based on the information received from the price payment machine 30A. Inform customers of this. The price payment machine 30A notifies the customer that the price payment machine 30 that acquired the price data (that is, the price payment machine 30 to which the customer should pay the price) is his / her own machine. When the customer guided to the price payment machine 30A starts the operation of the price payment machine 30A according to the notification from the product registration machine 20A and the price payment machine 30A, the price payment machine 30A uses the price data generated in the product registration machine 20A. The payment process of the price based on is started (step S09).

  The product registration device 20A can execute a new registration process when the generated price data is transmitted to the store controller 10 (step S03). Therefore, when the clerk starts the operation of the product registration machine 20A for the product that the next customer intends to purchase, the product registration machine 20A starts a new product registration process (step S11). When the registration process ends (step S12), the merchandise registration machine 20A adds information indicating the price payment machines 30A, 30B, and 30C permitted to acquire the price data to the price data generated by executing the registration process. Then, the price data is transmitted to the store controller 10 (step S13). The store controller 10 receives the price data (step S14) and stores it.

  At this time, in the payment machine 30A, the payment is made by the previous customer. Therefore, the payment machine 30A does not execute the acquisition process of the payment data to the store controller 10, and the previous payment ( The payment process for the price started in step S09) is executed. On the other hand, in the price payment machines 30B and 30C, since the payment processing of the price started in the past (steps S05 and S06) has been completed (steps S15 and S16), the price payment machines 30B and 30C are stored in the store controller 10. The price data acquisition process is executed for

  Then, the store controller 10 transmits the price data generated in the merchandise registration machine 20A to the price payment machine 30B in accordance with the request by the price payment machine 30B among the requests by the price payment machines 30B and 30C (step S17). When receiving the price data transmitted from the store controller 10 (step S18), the price payment machine 30B transmits information indicating that acquisition of the price data has been completed to the product registration machine 20A. As a result, among the multiple payment machines 30A, 30B, 30C, the payment machine 30B can execute the payment process (the payment process based on the payment data generated in the product registration machine 20A). Become. That is, one of the plurality of payment machines 30A, 30B, 30C that has performed communication (including direct communication and indirect communication via the store controller 10) with the product registration machine 20A. In the price payment machine 30B, it is possible to execute a payment process for the price.

  In step S17, the store controller 10 follows the request by the price payment machine 30B among the requests by the price payment machines 30B and 30C because of a predetermined priority order. In the POS system 1, for example, when requests from a plurality of payment machines 30 overlap, a priority order is determined in advance so that the store controller 10 follows a request from the payment machine 30 closest to the product registration machine 20. It has been. The priority order will be described later.

  In the product registration machine 20A, the price payment machine 30B is the price payment machine 30 that acquired the price data based on the information received from the price payment machine 30B (that is, the price payment machine 30 to which the customer should pay the price). Inform customers of this. The price payment machine 30B notifies the customer that the price payment machine 30 that acquired the price data (that is, the price payment machine 30 to which the customer should pay the price) is his / her own machine. The customer goes to the price payment machine 30B according to the notification from the product registration machine 20A and the price payment machine 30B, and pays the price at the price payment machine 30B.

  Here, as shown in FIG. 7, the printer 310 included in the price payment machine 30 prints a list of purchased products, a payment amount, and the like on the received receipt paper R and issues a receipt. In the present embodiment, a thermal printer is employed as the printer 310. As the receipt paper R, for example, a cylindrical heat-sensitive roll paper in which the heat-sensitive paper r2 is wound around the outer periphery of the paper tube r1 is used.

  The printer 310 is a throw-in type (paper drop-in type) in which the receipt paper R can be easily replenished. Specifically, in the printer 310, the front cover 320 is opened, the receipt paper R is dropped into the housing 321 with its axial direction being the horizontal direction, and the front cover 320 is removed with the end of the receipt paper R appropriately pulled out. By closing, the receipt paper R can be set. The receipt paper R is accommodated in the printer 310 without the paper tube r1 being fixed or pivotally supported.

  The printer 310 includes a sensor 330 that detects an insufficient remaining amount (near end) of the receipt paper R. As shown in FIG. 8, the sensor 330 is a reflection type photosensor, and includes a light projecting unit and a light receiving unit. The sensor 330 projects the light L from the light projecting unit onto the receipt paper R, and the reflected light of the light L is received by the light receiving unit. The sensor 330 detects whether or not the receipt paper R is short of the remaining amount based on the amount of reflected light received by the light receiving unit.

  Specifically, as shown in FIG. 8A, the sensor 330 reflects the light L on the receipt paper R, and when the reflected light amount equal to or greater than the threshold is received by the light receiving unit, the receipt paper R It still has a sufficient outer diameter and detects that the receipt paper R is not short of remaining amount. On the other hand, as shown in FIG. 8B, the sensor 330 consumes the receipt paper R when the light L is not reflected by the receipt paper R and the amount of reflected light received by the light receiving unit is less than the threshold value. To detect that the remaining capacity is insufficient. When the sensor 330 detects the shortage of the remaining amount of the receipt paper R, the sensor 330 outputs a shortage signal indicating that the remaining amount is short to the CPU 301. The threshold value is not particularly limited, and can be set in advance based on experience or experiment.

  The sensor 330 detects the shortage of the remaining amount of the receipt paper R between the end of printing in the printer 310 and the start of the next printing. Here, the sensor 330 detects whether or not the receipt paper R is short of the remaining amount at the time when the printing of the printer 310 is completed (when the receipt is issued).

  When the sensor 330 detects a shortage of the remaining amount of the receipt paper R a predetermined number of times, the CPU 301 controls at least one of the display unit 305, the speaker 309, and the sign pole 312 and the remaining amount of the receipt paper R from at least one of them. Notification information (hereinafter also simply referred to as “notification information”) for reporting the shortage is output. The predetermined number is an integer of at least two times. The predetermined number of times is not particularly limited, and can be set in advance based on experience or experiment. Here, the CPU 301 outputs at least one of display of characters and the like by the display unit 305, output of sound by the speaker 309, lighting of the indicator lamp by the sign pole 312, and the like when the shortage signal is output from the sensor 330 a predetermined number of times. Thus, the shortage of the remaining amount of the receipt paper R is notified.

  When notifying the shortage of the remaining amount of the receipt paper R, the display unit 305 displays a clerk sign notifying the shortage of the remaining amount of the receipt paper R on the screen of the display unit 305 as notification information. The clerk sign may be, for example, a clerk mark such as a circle displayed at the corner of the screen of the display unit 305 and noticed by the clerk.

  As described above, the payment processing in the POS system 1 can be executed by one price payment machine 30 that communicates with the commodity registration machine 20 among the plurality of price payment machines 30. Therefore, when the sensor 330 detects that the remaining amount of the receipt paper R is insufficient, the merchandise registration machine 20 lowers the priority of communication with the price payment machine 30 having the sensor 330. Specifically, the merchandise registration machine 20 reduces the order of the payment machine 30 having the sensor 330 to the generated price data when a shortage signal is output from the sensor 330 to the CPU 301. The information is added and transmitted to the store controller 10. The priority order information is information related to the priority order, which is the order of giving priority to the acquisition of price data for each of the plurality of price payment machines 30. The price payment machine 30 with higher priority is given priority to the acquisition of price data.

  In particular, when the sensor 330 detects that the remaining amount of the receipt paper R is insufficient a predetermined number of times, the merchandise registration machine 20 prohibits communication with the payment machine 30 having the sensor 330. Specifically, when a shortage signal is output from the sensor 330 to the CPU 301 a predetermined number of times, the merchandise registration machine 20 acquires price data for the price payment machine 30 having the sensor 330 in the generated price data. Is added to the store controller 10.

  As described above, in the POS system 1, notification information is not output immediately when the remaining amount of the receipt paper R is detected by the sensor 330, but when the insufficient amount of the receipt paper R is detected by the sensor 330 a predetermined number of times. Broadcast information is output. Therefore, it is possible to increase the certainty of the detection result that the receipt paper R is insufficient, and even if the receipt paper R is likely to swing (bounce), the receipt paper R is insufficient. Can be accurately grasped.

  In the POS system 1, a clerk's sign notifying the shortage of the remaining amount of the receipt paper R is displayed on the screen of the display unit 305 of the payment machine 30 as notification information. As a result, it is possible to notify the store clerk that the receipt paper R is insufficient in quantity so that the customer is less likely to notice.

  In the POS system 1, when the sensor 330 detects that the receipt paper R is insufficient, the merchandise registration machine 20 lowers the priority of communication with the price payment machine 30 having the sensor 330 among the plurality of price payment machines 30. Let Thereby, in the payment machine 30 in which the shortage of the remaining amount of the receipt paper R is detected by the sensor 330, the possibility that the payment process is executed can be reduced.

  In the POS system 1, when the sensor 330 detects that the remaining amount of the receipt paper R is insufficient for a predetermined number of times, the merchandise registration machine 20 prohibits communication with the price payment machine 30 having the sensor 330 among the plurality of price payment machines 30. . Thereby, it is possible to prohibit the payment processing from being executed in the payment machine 30 in which the shortage of the remaining amount of the receipt paper R is accurately grasped.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

  In the above embodiment, the semi-automatic POS system 1 is exemplified, but the present invention is not limited to this. The present invention may be a so-called full self-type POS system. For example, a product registration machine 20 in which a customer performs product registration processing by itself and a price payment machine 30 in which the customer performs price payment processing by itself are integrated or separated. You may provide the POS terminal device comprised by the body.

  In the above-described embodiment, the payment machine 30 detects the feed amount of the receipt paper R using, for example, a separate sensor or the CPU 301, and detects a shortage of the remaining amount of the receipt paper R based on the detected feed amount of the receipt paper R. The usage amount (usage distance) of the receipt paper R after 330 is detected may be detected. Further, when the detected usage amount of the receipt paper R exceeds a predetermined amount, the CPU 301 controls at least one of the display unit 305, the speaker 309, and the sign pole 312 and sends notification information from at least one of them. It may be output. According to this configuration, when the remaining amount of the receipt paper R is detected by the sensor 330, the notification information is output when the receipt paper R is used beyond a predetermined amount thereafter. Therefore, it is possible to reliably grasp the shortage of the remaining amount of the receipt paper R. The predetermined amount is not particularly limited and can be set in advance based on experience or experiment. A separate sensor or CPU 301 constitutes a usage amount detection unit.

  In the above embodiment, the display unit 305, the speaker 309, and the sign pole 312 constitute a notification unit. Note that the payment machine 30 may include a transmission unit that transmits notification information to the controller of the service center so as to notify the service center that the receipt paper R is insufficient.

  In the above embodiment, the store controller 10 stores the price data generated in the product registration machine 20, but the product registration machine 20 may store the price data. In this case, each price payment machine 30 executes price data acquisition processing on the merchandise registration machine 20, not on the store controller 10.

  In the above embodiment, the store controller 10 stores the price data as a host device in the POS system 1. However, if the store controller 10 has a function of storing the price data, another device can be used as the host device in the POS system 1. it can.

  In the above embodiment, the merchandise registration machine 20 generates the price data, but the store controller 10 or the price payment machine 30 may generate the price data based on the merchandise registration process executed by the merchandise registration machine 20. Good.

  DESCRIPTION OF SYMBOLS 1 ... POS system 20, 20A ... Merchandise registration machine, 30, 30A, 30B, 30C ... Price payment machine, 301 ... CPU (use amount detection part), 305 ... Display part (notification part), 309 ... Speaker (notification part) , 310 ... Printer, 312 ... Sign pole (notification unit), 330 ... Sensor, R ... Receipt paper.

Claims (5)

A product registration machine that performs product registration processing;
A payment machine for executing payment processing based on price data generated by execution of the registration process,
The payment machine is
A printer that prints on receipt paper;
A sensor for detecting a shortage of the remaining amount of the receipt paper between the end of printing in the printer and the start of the next printing;
A POS system, comprising: a notification unit that outputs notification information notifying that the receipt paper is insufficient when the sensor detects that the receipt paper is insufficient.   2. The POS system according to claim 1, wherein the notifying unit displays a sign for a clerk notifying the shortage of the remaining amount of the receipt paper as the notifying information on a screen of a display unit of the payment machine.   A plurality of the payment machines are provided, and the execution of the payment process is possible in one of the payment machines that has communicated with the commodity registration machine among the plurality of payment machines. 3. The POS system according to claim 1, wherein when the sensor detects that the receipt sheet is insufficient in remaining amount, the registration device lowers the priority of the communication with the payment machine having the sensor.   A plurality of the payment machines are provided, and the execution of the payment process is possible in one of the payment machines that has communicated with the commodity registration machine among the plurality of payment machines. The POS according to any one of claims 1 to 3, wherein the registration machine prohibits the communication to the payment machine having the sensor when the sensor detects the shortage of the remaining amount of the receipt paper for the predetermined number of times. system. The payment machine is
A usage amount detection unit that detects a usage amount of the receipt paper after the sensor detects an insufficient remaining amount of the receipt paper;
The POS system according to any one of claims 1 to 4, wherein the notification unit outputs the notification information when a usage amount detected by the usage amount detection unit exceeds a predetermined amount.

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