JPH0465468B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic card read/write device for reading or writing information from a magnetic card. In particular, reading value information data from a magnetic card that stores value information such as the amount paid in advance,
This invention relates to a magnetic card read/write device that writes the remaining amount after sales or service.

Conventional technology Information data such as the amount paid in advance is stored on a magnetic stripe provided on a part of the card, information is read from the magnetic stripe, various services and products are sold, etc., and charges for the provided services are stored. Services and product sales systems using magnetic cards are well known, in which the sales price of a product is subtracted from the information data stored on the magnetic stripe, the remaining amount is written, and the card is returned. Read/write devices are also known.

Problems to be Solved by the Invention In the sales system using a magnetic card as described above, the remaining amount stored on the magnetic card becomes low, and even if the magnetic card is inserted into a magnetic card read/write device, it is difficult to receive the service. If the service charge is below the specified service charge or the price of the desired product is not reached, the service or product cannot be purchased.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems when the remaining amount stored in the magnetic card inserted into the magnetic card read/write device is small and the amount is less than the sales price of the desired service or product.
Provides a magnetic card read/write device that makes it possible to insert a new magnetic card, add up the value information, i.e., the amount, stored on the two magnetic cards, and sell services and products within this total amount. It's about doing.

Means for Solving the Problems Figure 1 is a block diagram of the means adopted by the present invention to solve the above problems. reading/writing means b for reading and writing;
A data transmitting/receiving means c for transmitting and receiving the read information, a processing end signal sent from the information processing device, and sales amount information, a storage means d for adding and storing the information read from the magnetic card, and a magnetic card additional insertion selection means. e, a determining means f for determining whether additional input has been selected by the additional input means e and whether a processing end signal has been sent; When the first return means g writes zero value information to the magnetic card by the writing means b and returns the magnetic card by the transport means a, and the discriminating means f determines that the processing end signal has been sent, the above-mentioned writing the amount obtained by subtracting the value information of the sales amount sent from the information processing device from the value information stored in the storage means d into the magnetic card by the reading/writing means b;
The above-mentioned problem has been solved by providing a second return means h for returning the magnetic card by zeroing out the stored information in the storage means d.

Operation: A magnetic card is inserted into the magnetic card read/write device, and the value information written by the conveyance means a and stored on the magnetic stripe of the magnetic card is read by the read/write information b. The information thus obtained is transmitted by the data transmitting/receiving means c to an information processing device such as a vending machine for goods or services, and is also stored in the storage means d by being added to the value stored in the storage means. When the information processing device inputs, for example, the sales amount indicating that the sale of a certain amount of products has ended and a processing end signal to the data transmitting/receiving means c, the determining means f determines the processing end signal. The second return means h subtracts the value information corresponding to the sales amount from the value information stored in the storage means d, and the subtracted value is output to the read/write means b writes on the magnetic card and drives the conveyance means a to return the magnetic card, while clearing the storage means d to make the stored value zero.

On the other hand, before the determination means f determines the processing end signal from the information processing device, the additional input selection means e
When the first return means g is activated, the reading/writing means b writes that the value information is zero on the magnetic card, and the conveying means a is driven to return the magnetic card. . As a result, the value of the value information read from the magnetic card is still stored in the storage means d. Therefore, when the customer inserts a new magnetic card again, the value information read from the new magnetic card is transmitted to the information processing device and added to and stored in the storage means d. When the sale is made, the value obtained by subtracting the sales amount from the value stored in the storage means d is written on the magnetic card and returned.

Embodiment FIG. 2 is a front view of an embodiment of the present invention, FIG. 3 is a right side view of the case with the right side plate of the casing in FIG. 2 removed, and FIG. 4 is a front view of an embodiment of the present invention. A sectional view and FIG. 5 are BB sectional views in FIG. 3.

Reference numeral 1 denotes a housing having mounting holes 1a to 1d for mounting the magnetic card read/write device to a vending machine. 2 is a mask for the card insertion slot, a lamp 3 indicates that it is available for sale, and a card return button PB1.
Additional insertion button used when inserting a new card when the remaining amount stored on the inserted card is low
It has PB2. 5 is a card entrance provided in the mask into which a card is inserted. 6 is a front cover, and the front cover 6 and the mask 2 are fixed to the housing with mounting screws or the like. A side bracket 7 is fixed to the housing, and a drive motor 8, a reduction mechanism 9 for decelerating the output of the drive motor 8, and a rotary encoder 10 are fixed to the side bracket 7. Two pulleys P1 and P2 are fixed to the drive shaft, and one pulley P1
A drive belt 11 is stretched between one drive pulley P3 of a card transport mechanism to be described later. In addition, the other pulley P2 and the rotary encoder 10
An encoder drive belt 12 is stretched between pulleys P4 provided on the rotating shaft. Further, a shutter solenoid 15 for driving an entrance shutter 14 for opening and closing the card insertion slot 13 is fixed to the side bracket 7. Further, a lower radius guide 17 that forms a card conveyance path 16 is fixed to the housing 1, and a sub radius guide 18 provided on the side bracket 7, an upper radius guide 19 fixed to the housing 1, and the lower radius guide 17 are fixed to the housing 1. Guide 17
A card conveyance path 16 is formed between these, and
The lower radius guides 19 and 17 are formed in an arc shape so that the direction of the card conveyance path 16 is changed by 90 degrees on the side opposite to the card insertion slot 13. Furthermore, the lower card guide 21 is connected to the housing 1 and the side bracket 7.
is fixed to and faces this lower card guide 21,
An upper card guide 20 is provided which rotates about a shaft 22 with respect to the lower card guide 21. The sub radius guide 18 and the lower radius guide 17 are provided with three entrance sensors PSW1 to PSW composed of photoelectric elements, etc., as shown in the sectional view taken along line B-B in Figure 5.
3 are arranged on both sides of the card conveyance path 16, the entrance sensors PSW2 and PSW3 are arranged at positions facing each other, and the entrance sensor PSW1 is arranged at a position closer to the card insertion slot 3 than these entrance sensors PSW2 and PSW3. When the card C is inserted in the normal insertion direction, the entrance sensors PSW1 and PSW2 are turned on, and the entrance sensor PSW3 is turned off by the notch in one end of the magnetic card C (upper right end in Figure 5). When the magnetic card C is inserted normally, it is detected. Further, between the upper card guide 20 and the lower card guide 21, sensors PSW5 and PSW7 for detecting the magnetic card C conveyed through the card conveyance path 16 are arranged at the upper and lower ends of the vertical card conveyance path 16.

A conveyance pulley P7 is rotatably fixed to the lower radius guide 17, and partially projects into the card conveyance path 16. Further, a conveyance pulley P6 is rotatably fixed to the upper part of the lower card guide 21, and a portion of the pulley P6 protrudes into the card conveyance path 16. A pulley P driven by the drive belt 11 is provided at the bottom of the lower card guide 21.
A shaft 23 of No. 3 is rotatably supported, and a transport pulley P5 partially exposed to the card transport path is mounted on the shaft 23.
A conveyor belt 24 is installed between the conveyor pulleys P5 to P7, and the tension of the conveyor belt 24 is adjusted by an idler 25 provided on the lower card guide 21. There is.

Shaft 27a provided in the upper radius guide 19
The pinch roller 2 is attached to the mounting member 27, which is biased counterclockwise in FIG.
8 is rotatably fixed, and the pinch roller 28 protrudes into the card conveyance path 16 so as to press against the conveyance pulley P7 and the conveyance belt 24 placed over the conveyance pulley P7. Further, a pinch roller 29 is rotatably fixed to a mounting member 26 which is biased counterclockwise in FIG. 3 by a spring SP2 about a shaft 26a provided on the card guide 20. Above conveyor pulley P
6 and the conveyor belt 24 are pressed against each other. Further, a shaft 32 to which a mounting member 32 of a pinch roller 31 which is in pressure contact with the magnetic head 30 and the above-mentioned conveyance pulley P5 is fixed is attached.
is fixed. Figure 6 shows C- in Figure 3.
FIG. 7 is a sectional view taken along the line DD in FIG. 3. As mentioned above, a head bracket 30a having a magnetic head 30 fixed to its tip is rotatably fixed to the shaft 29. Bracket 30a
The magnetic head 30 is formed to protrude into the card conveyance path 16 by a spring SP3. The shaft 32 also has a pinch roller 3 at its tip.
1 is rotatably fixed to a mounting member 31a, which is rotatably fixed to the mounting member 31a.
SP4 causes the pinch roller 31 to protrude into the card conveyance path 16, and the conveyor belt 24 and conveyor pulley P.
5. A shaft 23 rotatably fixed to the lower card guide has a guide roller 33 that faces the magnetic head 30.
The conveyor belt 24 is stretched over the conveyor belt 24, and the conveyor pulley P5 and the dummy roller 34 that contact the pinch roller 31 via the conveyor belt 24 are fixed, and the drive pulley P3 is fixed to one end of the shaft 23, as described above. When the drive pulley P3 is driven by the drive belt 11, the shaft 23 is rotated, the control roller 33, the dummy roller 34, and the conveyance pulley P5 are rotated, and the conveyance belt 24 is also driven to drive the conveyance pulleys P1 and P7. It also rotates.
In addition, when the position of the magnetic stripe of the inserted magnetic card C changes, the dummy roller 34
This dummy roller 34 is used as a patrol roller by fixing a magnetic head at the position shown by the broken line in the figure.

PSW 4 is a sensor that detects when the inlet shutter 14 opens the card conveyance path 16 by the operation of the shutter solenoid 15. The plunger is pivotally mounted by a pin 36, and when the shutter solenoid 15 is de-energized, the entrance shutter 14 is moved from the card conveyance path 14 by gravity as shown in FIG.
When the shutter solenoid 15 is energized, it rotates clockwise around the pin 35 in the clockwise direction in FIG. It's becoming like that.

The upper card guide 20 is rotatably fixed to a shaft 22 fixed between protruding members 21a protruding from both sides of the lower end of the lower card guide 21. Further, a guide member 37 having a guide hole 38 is integrally fixed to the lower card guide 21, and a protruding member 20a protruding from both sides of the lower end of the upper card guide 20 is fixed to the guide hole 38. When the upper card guide 20 is rotated clockwise about the shaft 22 in FIG. 2, the pin 20b is guided by the guide hole 38 and stops at the end of the guide hole 38. Hold the upper card guide 20 in this position. As a result, by opening the upper card guide 20, the card conveyance path 16 is opened, and when a magnetic card is jammed in the card conveyance 16, removal or repair of the magnetic card, etc.
It is designed to be easy to clean. In addition, 3
9 is a back cover fixed to the upper card guide 20 with screws or the like. Further, 40 and 41 are a main board and an interface board to which control boards fixed to the front cover 6 and side bracket 7 are attached, respectively.

Next, the card conveyance operation of the magnetic card read/write device will be outlined.

The magnetic card is inserted from the insertion slot 5 of the mask in the normal insertion direction (when the card is inserted with the notched corner on the upper right side as shown in Figure 5), and the entrance sensors PSW1 and PSW2 are turned on.
When the entrance sensor PSW3 is in the off state due to the notch in the card, the shutter solenoid is activated.
Pull up the entrance shutter 14 and card conveyance path 16
is released, the drive motor 8 is driven, the drive pulley P3 is rotated via the drive pulley P1 and the drive belt 11, the shaft 23 is rotated, the conveyance pulley P5 and the conveyance belt 24 are driven, and the conveyance pulley P6 . P
7 to drive the card transport means. Therefore, when the magnetic card C is further inserted, one end of the magnetic card C is pinched by the pinch roller 28 and the conveyor belt 24 which is placed over the conveyor pulley P7, and the magnetic card C is conveyed as the conveyor belt 24 rotates. It is taken into the passage 16, guided by the upper and lower radius guides 19 and 17, turned 90 degrees and conveyed, and then pinched again by the pinch roller 28 and the conveyor belt 24 on the conveyor pulley P6.
Next, the magnetic card C is conveyed by the pinch roller 31 and the conveyor belt 24 on the conveyor pulley P5, and further conveyed. The magnetic head 30 reads information from the magnetic stripe on the magnetic card C. Then, when the leading end of the magnetic card C is detected by the sensor PSW6, the drive motor 8 is stopped and the card transport means is stopped.

Next, when returning the magnetic card C, the drive motor 8 reverses and drives the card transport means in the opposite direction, so the magnetic card C is fed backwards, and during this time information is transferred from the magnetic head 30 onto the magnetic stripe of the magnetic card C. is written, passes through the card insertion slot 13, and the magnetic card C is ejected from the card entrance 5 of the mask 2.

Note that while the magnetic card C is being transported, the rotary encoder 1 is moved by the encoder drive belt 12 between the pulley P2 provided on the output shaft of the deceleration mechanism 9 and the pulley P2 provided on the shaft of the rotary encoder 15.
0 is activated to detect the position of the magnetic card C.

FIG. 8 is a block diagram of the control device in this embodiment, where 51 is a microprocessor (hereinafter referred to as CPU), and 52 is a ROM that stores a control program.
53 is an input circuit which inputs signals from the above-mentioned sensors PSW1 to PSW6 and an information processing device such as a vending machine control device. . Furthermore, the output of a reversible counter 55 that counts output pulses from the rotary encoder 10 is also input. 54 is an output circuit connected to the drive motor 8, the shutter solenoid 15, and an information processing device such as a vending machine control device.

Next, the operation of this embodiment will be explained with reference to the operation processing flowchart of FIG.

The CPU 51 connects to the entrance sensor via the input circuit 53.
It is constantly detected whether PSW1 and PSW2 are ON and entrance sensor PSW3 is OFF (steps S1 to S3).
That is, when the magnetic card C is inserted normally and the entrance sensors PSW1 and PSW2 are turned on and the entrance sensor PSW3 is turned off, the shutter solenoid 15 is energized (step S4). The shutter solenoid 15 is activated, and the inlet shutter 14 is connected to the pin 35.
Rotate clockwise around the card transport path 16.
to open. When the sensor PSW 4 detects this rotation of the entrance shutter 14 (step S5), it drives the drive motor 8 (step S7). Note that even if the shutter solenoid 15 is energized in step S4, if sensor PSW4 is not turned on (step
S5), the shutter solenoid 15 is turned off (step S6), the standby state is restored, and the processing from step S1 onwards is repeated. When the drive motor 8 rotates in the normal direction (step S7) and the magnetic card C is further inserted, the magnetic card C is held between the pinch roller 28 and the conveyor belt 24 on the conveyor pulley P7, and the drive motor 8 rotates in the normal direction. Therefore, the deceleration mechanism 9, the drive pulley P1, the drive belt 11, and the drive pulley P3 rotate in the normal direction, causing the shaft 23 to rotate in the normal direction, so that the conveyance pulley P5 rotates in the normal direction, and the conveyance belt placed over the conveyance pulleys P5 to P7 rotates in the normal direction. 24 is rotated in the normal direction, the magnetic card C is taken in, guided by the upper and lower radius guides 19 and 17, turned 90 degrees, and conveyed.
Then, from the tip of the magnetic card C, insert the sensor PSW5.
When turned on (step S8), the timer T1 in the CPU 51 is started (step S9). Furthermore, the magnetic card C is pinched by the pinch roller 28 and the conveyor belt 11 on the conveyor pulley P6, and is further taken in by the forward rotation of the conveyor belt 11, and is then taken in by the sensor.
When sensor PSW5 turns off after passing the position of PSW5 (step S10), shutter solenoid 1
5 is turned off and the conveyance path is closed by the entrance shutter 14 (step S11).A tape or string is attached to the magnetic card C, and the entrance shutter 14 closes the conveyance path with the tape or thread attached to the magnetic card C. The conveyance of the magnetic card C is stopped by pinching the thread. On the other hand, if the magnetic card C is normal, the magnetic head 30 starts reading data from the magnetic stripe on the magnetic card C (step S12).
The magnetic card C is conveyed by a conveyor belt 11,
It is pushed toward the magnetic head 30 by the patrol roller 33,
Moreover, the magnetic head 30 is a rotary encoder 10.
Data is read from the magnetic stripe based on the signal. Then, the magnetic card C is further transported and the sensor PSW6 is turned on (step
S13), during this time the CPU 5 reads the data and
It is determined whether the timer T1 has elapsed for the set time (step S14), and if the timer T1 elapses before the sensor PSW6 is turned on, normal feeding will not be performed, and the forward rotation of the drive motor 8 is stopped (step S15). ) and perform the card return processing from step S29 onward, which will be described later. When the magnetic card C is normally transported and the sensor PSW 6 is turned on, it means that the magnetic card C has been transported to the end of the card transport path 16 and the data has been read normally, so the drive motor is stopped (step S16). ), transmitting the amount data read from the magnetic head 30 to an information processing device such as a vending machine or an automatic service machine to which the magnetic card read/write device is attached;
Add to register MA (step S17). The information processing device that receives this data will enable a vending machine to sell the product within the price data according to this data, and once the sale is completed, it will send a sales end signal back to the magnetic card read/write device. However, during this time, the magnetic card read/write device
CPU51 is additional input button PB2, card return button PB
When 1 is pressed, it is determined whether an additional signal or a return signal has been sent (steps S18, S19), or whether a sales end signal has been sent (step S20), and if an additional signal is sent, the process goes to step S37. When the return signal is sent to step S39, the process proceeds to step S39.

When the sale end signal is sent (step
S20), the CPU 51 reads and stores the sales amount X sent together with the sales end signal (step S20).
S21), the sales amount X is subtracted from the previously read and stored pre-sale amount data in the register MA and the remaining amount is stored in the register MB (step S22). Note that if the information processing device sends the remaining amount instead of the sales amount X, the process of step S22 is not necessary.

Then, write the remaining amount to the card (step
S23). In the remaining amount writing process, as shown in FIG. 9d, the drive motor 8 is reversed and the conveyor belt 1 is
1 is sent backwards, and the magnetic card C is sent backwards, and the counter C is set to zero (step SB1). When the magnetic card C is sent backwards and the sensor PSW 6 is turned off (step SB2), the CPU 51 first starts writing the remaining amount (value of the register MB) on the magnetic stripe of the magnetic card C that has been conveyed from the magnetic head 30. , write operation is performed until sensor PSW5 is turned on (steps SB3, SB4). and,
When the magnetic card C is fed backwards and the sensor PSW5 is turned on by one end of the magnetic card C (step
SB4), the drive motor 8 stops rotating in the reverse direction, and then starts rotating in the forward direction (steps SB5, SB6). When the magnetic card C is sent by the forward rotation of the drive motor 8 and the sensor PSW 5 is turned off (step SB7), the data written on the magnetic card C is read again from the magnetic head 30.
Read DC (step SB8). And the sensor
When the PSW 6 turns on, the drive motor 8 is stopped (steps SB9 and SB10), and it is determined whether the read data DC and the value in the register MB are equal, that is, whether there is a writing error (step SB11). If the read data DC and the value in the register MB are equal, it is determined whether the value of the counter C is greater than or equal to the set value N (step SB12), and the set value N is determined.
If the value is not exceeded, "1" is added to the counter C (step SB13), the drive motor 8 is reversed (step SB14), and the magnetic card C is sent back to the sensor.
When PSW 6 is turned off (step SB15), the process from step SB3 onwards is performed again to write the remaining amount, and it is checked whether the writing has been done correctly. If the value of counter C exceeds the set value N in step SB12, the CPU 51 outputs a sales stop signal to the information processing device and displays it (step SB12).
SB16). Also, if the written data and the data DC read for confirmation are equal (step SB11),
The process returns to the main routine and proceeds to the return process starting from step S24. That is, register MA,
By clearing the MB (step S24), reversing the drive motor 8 (step S25), and reversing the magnetic card C, the sensor PSW6 is turned off, and when the sensor PSW5 is turned on (step S26,
S27), the shutter solenoid 15 is energized and the inlet shutter 14 is opened (step S28). and,
When the magnetic card passes and the sensor PSW5 is turned off (step S29), a timer T2 is started, and when the timer T2 elapses, the shutter solenoid 15 is deenergized, the inlet shutter 14 is closed, and the reverse rotation of the drive motor 8 is stopped ( Step S31~
S33). That is, the set time of the timer T2 is set to a time sufficient for the magnetic card C to completely pass through the position of the entrance shutter 14 after the sensor PSW5 is turned off.
When the magnetic card C passes through the position 4 and a part of the magnetic card C protrudes from the card entrance of the mask 2, the drive motor 8
drive will be stopped. Then, the magnetic card C is pulled out and the entrance sensors PSW1 to PSW
When all 3 are off (steps S34 to S36),
The magnetic card read/write device enters a standby state.

On the other hand, after one magnetic card C is inserted and the data is read from the magnetic card C and stored in the register MA (steps S1 to S17), the CPU 51 sends an additional signal or return signal or While determining whether or not a sales end signal has been input, a customer who has a small amount remaining on the inserted magnetic card C and has reached the price of the desired product, etc. wishes to insert a new magnetic card C, and adds a new magnetic card C. Insertion button
When PB2 is pressed and an additional signal is input to the CPU 51 (step S18), the CPU 51 inputs the register MB.
is cleared to zero (step S37), and the remaining amount writing process is performed (step S38).As mentioned above, the remaining amount writing process is the process of writing the value of register MB to the magnetic card C in steps SB1 to SB16.
In this case, a value of zero will be written to the magnetic card C. When this balance writing process is completed,
The card return process from step S25 onwards is performed, and the magnetic card C is returned. Furthermore, without returning the magnetic card C, a hopper may be installed in the magnetic card read/write device and the data may be taken into the hopper.Also, even when returning the magnetic card C, all information in the magnetic stripe of the magnetic card may be erased. Alternatively, a portion of the card may be cut off and processed so that it can be reused.

On the other hand, the data stored in the returned magnetic card C is stored in the register MA. Therefore, when the customer inserts a new magnetic card C, new data is read from the new magnetic card C and transmitted to the information processing device, and the new data is added to the register MA (steps S1 to S17). Then, the above-described processing from step S18 onwards is performed.

Furthermore, if the card return button PB1 is pressed before the sale, the CPU 51 detects a return signal (step S19), writes the value of register MA to register MB (step S39), and performs the balance writing process (step S40). ). That is, when the card return button PB1 is pressed, the amount read from the magnetic card C is stored in the register MB as the remaining amount, and this remaining amount is written to the magnetic card C. Note that the remaining amount writing process is the same process as described above in steps SB1 to SB16. When the balance writing process is completed, the register
After clearing MA and MB (step S41), the process moves to the card return processing in steps S25 and below, returns the magnetic card C, and enters a standby state.

Effects of the Invention As described above, the present invention provides the following advantages: when a magnetic card is inserted and the amount of value information stored on the magnetic card is less than the sales amount of the service or product;
Insert a new magnetic card, add the balance remaining on the old magnetic card and the amount stored on the new magnetic card, and sell products or receive services within this added amount. By doing this, you can use the magnetic cards that have few remaining applications without wasting them.

[Brief explanation of the drawing]

Figure 1 is a block diagram of the means adopted by the present invention to solve the problems of the prior art, Figure 2 is a front view of an embodiment of the present invention, and Figure 3 is the right side of the casing in Figure 2. The right side view when the plate is removed, Figure 4 is a sectional view taken along line AA in Figure 3, Figure 5 is a sectional view taken along line B-B in Figure 3, and Figure 6 is taken along line C-C in Figure 3. 7 is a sectional view taken along line DD in FIG. 3, FIG. 8 is a control block diagram of the same embodiment, and FIG.
Figures a to d are operational processing flowcharts of the same embodiment. 1... Housing, 2... Mask, 3... Lamp, 4
... Card return button, 5 ... Card entrance, 6 ... Front cover, 7 ... Side bracket, 8 ... Drive motor, 9 ... Reduction mechanism, 10 ... Rotary encoder, 11 ... Drive belt, 12 ... ... Encoder drive belt, 13 ... Card insertion slot, 14 ... Entrance shutter, 15 ... Shutter solenoid, 16
...Card conveyance passage, 17...Lower round guide,
18...Sub R guide, 19...Upper R guide, 21...Lower card guide, 22, 23...
Shaft, 24... Conveyor belt, 25... Idler, 2
6, 27... Mounting member, 28, 29... Pinch roller, 30... Magnetic head, 30a... Bed bracket, 31... Pinch roller, 31a...
Mounting member, 32...shaft, 33...patroller,
34...Dummy roller, 35, 36...Pin, 3
7... Guide member, 38... Guide hole, 39...
Back cover, 40... Main board, 41... Interface board, 51... Microprocessor, 52... Memory, 53... Input circuit, 54...
...Output circuit, 55...Counter, PSW1, PSW
3... Drive pulley, P2, P4... Pulley, P5
~P7...Conveyance pulley, C...Magnetic card.

Claims (1)

[Scope of Claims] 1. A magnetic card read/write device that reads and writes value information from a magnetic card, comprising: a conveying means for conveying a magnetic card; a reading/writing means for reading and writing information from a magnetic card; a data transmitting/receiving means for transmitting and receiving information and a processing end signal sent from the information processing device and sales amount information; a storage means for adding and storing information read from the magnetic card; a means for selecting the addition of a magnetic card; A determining means for determining whether additional input has been selected by the input selection means and whether a processing end signal has been sent; a first return means for writing value information on the magnetic card and returning the magnetic card by the conveyance means; and when the discriminating means determines that a processing end signal has been sent, the sales amount sent from the information processing device; a second return means for writing the amount obtained by subtracting the information from the value information stored in the storage means into the magnetic card by the reading/writing means, zeroing out the information stored in the storage means and returning the magnetic card. A magnetic card read/write device characterized by: 2. The determining means also determines the presence or absence of a card return signal, and when the determining means determines the card return signal, the reading/writing means writes the information stored in the storage means onto the magnetic card, returns the magnetic card, and returns the magnetic card to the storage means. 2. The magnetic card read/write device according to claim 1, further comprising a third return means for zeroing out the stored information.