JPH0728611Y2 - Magnetic card processor - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a card generally referred to as a prepaid card (hereinafter, simply referred to as a magnetic card, which can be used as cash for a machine by giving a monetary value in advance). The present invention relates to a magnetic card processing device for processing (referred to as).

[Prior Art] Such a magnetic card processing apparatus is used in an automatic ticket vending machine or the like, and when a magnetic card is inserted, processing is performed in the following order.

(1) The data written on the inserted magnetic card is read.

(2) In the case of a usable magnetic card, the account button lamp below the remaining amount written on the magnetic card (hereinafter, this remaining amount is referred to as the old remaining amount) is turned on. If the magnetic card cannot be used, the magnetic card is returned.

(3) When any one of the illuminated account buttons is pressed,
Tickets corresponding to this account button are issued.

(4) The amount corresponding to the pressed account button is deducted from the old remaining amount, and the amount (hereinafter, this remaining amount is referred to as the new remaining amount) is newly written on the magnetic card.
(Hereinafter, this process is referred to as a new balance writing process.) (5) The magnetic card is returned.

[Problems to be solved by the device]

By the way, in the magnetic card processing device, when the power is cut off due to a power failure or the like while the new balance is being written, or the magnetic card is clogged in the device for some reason, If you turn off the power to remove it, the data written on the magnetic card will be destroyed.

In this case, conventionally, when the magnetic card processing device is re-energized, the processing of the magnetic card is stopped so that the clerk can store the data (old balance and new balance) remaining in the magnetic card processing device. Based on the amount of money, the amount of money corresponding to the pressed account button, etc.), the amount remaining on the magnetic card was returned in cash, or the magnetic card was deposited and another new magnetic card was issued.

However, there is a problem in that the processing requires a long processing time because an attendant intervenes.

The present invention has been made to solve this problem, and an object thereof is to provide a magnetic card processing device capable of automatically performing the intervention processing of the staff.

[Means for Solving the Problems]

To achieve the above object, a magnetic card according to the present invention, which is provided with a monetary value in advance and can be used as cash for a machine, in which specific data for reading the data and identifying the card is recorded. And a magnetic card processing device having a magnetic head for reading and writing data of the magnetic card using a magnetic card having a track on which data can be written and the remaining monetary value of the card is recorded. (A) A storage area for temporarily storing each of the unique data recorded on the magnetic card, the remaining monetary value, and a new remaining monetary value obtained by subtracting the used amount from the monetary value. A battery-backed random access memory (hereinafter referred to as RAM) so that data can be stored even when the power is off, ) If the re-energized after power is lost on the way the write is writing data to a track that can be made,
First, it is determined whether the magnetic card passing over the magnetic head is the same as the magnetic card existing in the device before the power is turned off, based on the unique data temporarily stored in the storage area. When the card judging means and (c) the card judging means recognize that they are the same card, the amount of money used is subtracted from the remaining monetary value temporarily stored in the storage area and this monetary value. And rewriting means for writing again predetermined data relating to the new remaining monetary value to the writable track of this card.

Further, it is preferable that the storage area is provided in a RAM for storing various data used when a central processing unit that controls the operation of each unit of the magnetic card processing unit executes a program.

Further, the distance between the card insertion slot for inserting the magnetic card and the magnetic head is such that the power is turned off when the magnetic card is being returned and conveyed and a part of the magnetic card is passing over the magnetic head. It is preferable that the magnetic card has a sufficient length so that a part of the magnetic card does not protrude from the card insertion slot even if the motor for carrying is stopped and an inertial force acts on the magnetic card.

[Operation] In the above configuration, when the magnetic card is inserted into the magnetic card processing device, various known processes are performed. At this time, the unique data recorded on the magnetic card, the remaining monetary value, and the new remaining monetary value obtained by subtracting the used amount from the monetary value are stored in the RAM at any time. Will be temporarily saved in the save area. Since this RAM is backed up by battery,
The data is retained even if the main power supply of the magnetic card processing device is turned off.

Here, when the power is turned off while data is being written in the writable track of the magnetic card, there is a sufficient distance between the card insertion slot for inserting the magnetic card and the magnetic head. Even if inertial force acts on the card,
A part of the magnetic card does not protrude from the card insertion slot, and the magnetic card is held in the magnetic card processing device. After this, when the power is manually or automatically re-energized, the data of the read-only track of the magnetic card is read again, and the read unique data is stored in the storage area in the RAM by the card determination means. When the comparison is made with the unique data, and these data match, the card determination means determines that the magnetic card and the magnetic card existing in this device before the power is turned off are the same. When this determination is made, the rewriting means provides predetermined data regarding the remaining monetary value temporarily stored in the storage area and a new remaining monetary value obtained by subtracting the used amount from the monetary value. Is again written on the writable track of this card, and the magnetic card is ejected from the insertion slot.

Therefore, while writing data to the magnetic card, the power is turned off and the data is not written correctly,
Even if the written data is damaged, the necessary data is automatically written again in the magnetic card.

[Embodiment] An embodiment in which the magnetic card processing device of the present invention is applied to a ticket vending machine will be described below with reference to the drawings.

Fig. 2 is a diagram showing the external structure of the automatic ticket vending machine. In this figure, 1 is a guide display board on which sales routes are displayed and 2 is a 4-segment 7-segment LED (light emitting diode). A deposit amount indicator for displaying the amount of money, 3 is an operation indicator for indicating whether it is on sale or discontinued, 4 is a coin slot for inserting a coin, 5 is a card slot for inserting a magnetic card, and 6 is A number designation button for designating a desired purchase number (for example, any one of 1 to 4), and 7 is a desired ticket (for example, 80 yen, 100 yen, 120 yen, 140 yen, 160 yen) ) Is an account button for designating a ticket, 8 is a ticket exit from which a ticket is released, and 9 is a tray for receiving the released ticket and change.

FIG. 1 is a diagram showing the electrical configuration of the automatic ticket vending machine shown in FIG. 2, in which 10 is a CP for controlling the operation of each part of the automatic ticket vending machine.
U (central processing unit), 11 is a ROM (read only memory) in which programs used in the CPU 10 are stored, and 12 is a RAM (random access memory) in which various data are stored. In addition to the work area used when the CPU 10 executes the program, this RAM 12 stores ID codes, subway destination numbers, machine numbers of automatic ticket vending machines, etc., and is also composed of account button numbers / fares. A fare table is provided, and the unique data of this card recorded on the magnetic card inserted through the card insertion slot 5 shown in FIG. 2, the old remaining amount, and the card insertion slot 5 are returned. A storage area E is provided for temporarily storing each of the new balances written before. The RAM 12 is backed up by a battery so that data can be saved even when the power is off. Reference numeral 13 denotes a coin change unit for discriminating and counting the coins inserted from the coin inlet 4 shown in FIG. 2 and discharging the change to the tray 9 shown in FIG. Data is exchanged with the CPU 10 via 14. A ticket issuing unit 15 prints a ticket based on the ticket issuing control command and print data supplied from the CPU 10 through the interface 16, and the ticket issuing port 8
Release from. Reference numeral 17 denotes an operation unit including various switches and a display provided on the back surface of the automatic ticket vending machine, which supplies various operation signals to the CPU 10 through the interface 18 and C
Receives various display signals from PU10. Reference numeral 19 is a customer service unit including an input amount display 2, a number of buttons 6 and an account button 7 shown in FIG.
It supplies various operation signals to U10 and receives various display signals from CPU10. Reference numeral 21 is a card unit for receiving and returning the magnetic card inserted from the card insertion slot 5 shown in FIG. 2 and reading / writing various magnetic data.
Various signals are exchanged between the CPU 10 and the card unit 21 via the interface 22. 23 is a calendar clock unit that generates date data, has a battery backup to operate even when the power is off,
The date data is sent to the CPU10 via the interface 24 according to the command from the CPU10 requested via the interface 24.
Hand over to.

Next, the structure of the magnetic card applied to the automatic ticket vending machine shown in FIG. 1 will be described with reference to FIG. In the figure, reference numeral 25 denotes the entire magnetic card, and the base surface of this magnetic card 25 is made of a magnetic recording film. Further, in the longitudinal direction on the surface of the magnetic card 25, a read-only data, a first track T ₁ of the magnetic card 25 is unique data identifiable recorded, which data can be read and write The second track T ₂ is formed in parallel. Further, various magnetic data are magnetically recorded on these tracks T ₁ and T ₂ at 105 BPI by the FM (frequency modulation) method. 25a ₁ ~
25a ₃ is a punch hole, which corresponds to the remaining amount each time the remaining amount decreases, and the remaining amount scale sequentially provided in the longitudinal direction at the front edge of the magnetic card 25 (in this figure, 1,000 yen, 500 yen sequentially
Yen, 300 yen, 100 yen, 50 yen are printed. ) Is parallel to. (This figure shows that the remaining amount of money is between 100 yen and 300 yen.) The details of the magnetic data of the tracks T ₁ and T ₂ are as follows.

First track T ₁ start mark ST ₁ : A character indicating the start of data.

ID code IDC: Issuing agency code for identifying the issuer, and each magnetic card processing device determines whether or not to permit the use based on the content of this code.

Amount MO: Indicates the value of the card given at the time of issuance.

Spare YOB ₁ : Spare track area.

Issue point code HO: This is a code indicating the issue point of the card.

Issuing serial number BA: Issuing card number, which is recorded as an additional serial number for each card.

Check code CH ₁ : A code for detecting an abnormal reading of the data recorded on the track T _1, which is recorded with the horizontal parity of each of the above-mentioned data taken.

End mark END ₁ : A character indicating the end of data.

Second track T ₂ start mark ST ₂ : A character indicating the start of data.

Location code SH: Write and record the code of the location where this card was last used.

Date of Use DA: Write and record the date of purchase of the ticket or the date of payment processing using this card.

Remaining amount RMO: When this card is not used, the amount when the card was issued is recorded, and each time this card is used, the new remaining amount obtained by subtracting the amount used is written and recorded.

Spare YOB ₂ : A spare track area.

Check code CH _2: code for detecting seen Sonji or read abnormality of the data recorded in the track T _2, the horizontal parity of each data of said is recorded is taken.

End mark END ₂ : A character indicating the end of data.

Next, the mechanical structure of the card unit 21 shown in FIG. 1 will be described with reference to FIG. In this figure, F is a frame for holding each mechanism described later, and 5a and 5b are upper and lower plates constituting the card insertion slot 5 shown in FIG.
And the lower plate 5b forms a slit 5c into which only one magnetic card can be inserted. ST ₁ is a stopper housed in the upper plate 5a and supported so as to be vertically swingable around a support shaft J ₁ , and SL ₁ is an electromagnetic solenoid that drives the stopper ST ₁ up and down. When the solenoid SL ₁ is in the excited state, the stopper ST ₁ is lifted upward, and in the non-excited state, the stopper ST ₁ is pushed down to close the slit 5c and regulate the insertion of the magnetic card. P ₁ and P ₂ are two sets of photosensors for card insertion detection that detect that a magnetic card has been inserted into the card insertion slot 5, each of which is composed of a transmissive photosensor including an issuing diode and a phototransistor. , Are arranged on the inner side of the card insertion slot 5 with a predetermined distance in the width direction. V ₁ and V ₂ are belts that sandwich and convey the magnetic card inserted in the card insertion slot 5 as indicated by C ₁ , M ₁ is a pulse motor that drives the belt V ₁ , R ₁ , R ₃ and R ₄ pulleys, R ₉ for holding and guiding the belt V ₁ was tension adjustment pulley for adjusting the tension of the belt V _1, R ₁₀ is directly coupled to the rotation shaft of the pulse motor M _1,
A pulley that transmits the rotational force of the pulse motor M ₁ to the belt V ₁ . R ₅ , R ₇ and R ₈ are pulleys that hold and guide the belt V ₂ .
R ₆ is a tension adjusting pulley for adjusting the tension of the belt V ₂ . Further, R ₁₁ is a roller supported by the holder H ₁ , and is constantly urged downward by the spring SP ₁ , whereby the roller R ₁₁ is pressed against the pulley R ₅ via the belt V ₂ and the card insertion slot. The magnetic card inserted from 5 is guided between the belts V ₁ and V ₂ . The HD is a head that reads and writes magnetic data to and from a magnetic card that is conveyed while being sandwiched by belts V ₁ and V ₂ . In this magnetic head HD, the read coil and the write coil are integrated, and the first track of the magnetic card is
It has a function of reading magnetic data from each of T ₁ and the second track T ₂ (see FIG. 3) and writing the magnetic data to the second track T ₂ . R ₂ is a platen roller that presses the magnetic card against the magnetic head HD. The PU is a punch mechanism for punching a predetermined punch hole in a magnetic card that is conveyed while being sandwiched by belts V ₁ and V _2. It is a rotary electromagnetic solenoid SL ₂ and a plunger of this solenoid SL ₂ . Punch rod PL directly connected to
And a punch guide PG for guiding the punch rod PL to be movable in the vertical direction and a die PD. When the solenoid SL ₂ is excited, the punch rod PL is urged downward while rotating. It is designed to punch holes in magnetic cards. Ga and Gb are guide plates that guide the magnetic cards sent from the belts V ₁ and V ₂ . Further, P ₃ is a photo sensor for detecting the card position for detecting the end of the magnetic card, and is composed of a transmissive photo sensor including a light emitting diode and a phototransistor. In addition,
This photo sensor P ₃ detects that the magnetic card has passed through the magnetic head HD and has reached the position indicated by C ₂ in the figure, and also detects the start position when punching holes in the magnetic card by the punch mechanism PU. Used to do. Also,
The distance L between the card insertion slot 5 and the magnetic head HD is such that the pulse motor M ₁ is stopped when the magnetic card is being returned and conveyed and a part thereof is passing over the magnetic head HD. Even if an inertial force is applied to the magnetic card, the length of the magnetic card is sufficiently long so that a part of the magnetic card does not protrude from the card insertion slot 5.

Next, the operation procedure of the ticket vending machine according to this embodiment will be described mainly based on FIG. 4 and using the flowcharts shown in FIGS. 5 (a) and 5 (b).

The automatic ticket vending machine is in the ticket issuing standby state and the card unit 21
The electromagnetic solenoid SL ₁ is excited, the stopper ST ₁ is lifted upward, and the magnetic card can be inserted.

In the following, each step of SP1 to SP22 shown in FIG. 5 (a) will be described, so the operation will be described for each step.

(1) Step SP1 When the magnetic card is inserted from the card insertion slot 5, the photosensors P ₁ and P ₂ are shielded from light, the magnetic card is detected, and the process proceeds to step SP ₂ .

(2) Step SP2 pulse motor M ₁ is started, start the forward rotation in the direction of arrow A,
The belts V ₁ and V ₂ rotate in accordance with the positive rotation of the pulse motor M ₁ , and the magnetic card is conveyed inside the card unit 21 while being held between the belts V ₁ and V ₂ .
Pass on HD and move to step SP3.

(3) Step SP3 When the magnetic card passes over the magnetic card HD, the magnetic head HD causes the first of the magnetic cards shown in FIG.
When the magnetic data recorded on the track T ₁ and the second track T ₂ are read and supplied to the CPU 10 through the interface 22 shown in FIG. 1 and read normally, Move to step SP4. On the other hand, if for some reason the card reading is not
Move to SP19. At this time, the data of the _first track T _{1 and} the data recorded in the balance RMO of the second track T ₂ (FIG. 3) are stored in the storage area E in the RAM 12 shown in FIG.
Will be temporarily stored in.

(4) Step SP4 It is determined by the CPU 10 shown in FIG. 1 whether the ID code of the inserted magnetic card corresponds to any of the codes registered in its own storage unit. If the result is "NO", that is, if it is determined that the card is an unregistered magnetic card, the process proceeds to step SP19. On the other hand, when the result of "YES" is obtained, the process proceeds to step SP5.

(5) Step SP5 tip of the magnetic card shields the photosensor P _3, proceeds to step SP6.

(6) Step SP6 The pulse motor M ₁ stops, the magnetic card stops at the position C ₂ , and the process proceeds to step SP7.

(7) Step SP7 The balance of the magnetic card read in step SP3 is displayed on the insertion amount indicator 2 shown in FIG. 2 according to the instruction of the CPU 10, and the process proceeds to step SP8.

(8) Step SP8 The arbitrary number designation button 6 is pressed (normally, one adult is automatically set, so if there is no need to change it, this step is skipped).

(9) Step SP9 Only the number of sheets designation button 6 selected in step SP8 lights up, and the process proceeds to step SP10.

(10) Step SP10 The account button 7 below the balance is lit up, and step SP11
Move on to.

(11) Step SP11 Of the account buttons 7 lit in step SP10, any account button is pressed, and the process proceeds to step SP12.

(12) Step SP12 Only the account button 7 selected in step SP11 lights up, and the process proceeds to steps SP13 and SP14.

(13) Step SP13 In the CPU 10 shown in FIG. 1, the print data necessary to print the ticket corresponding to the number-of-sheets designating button 6 illuminated in step SP9 and the account button 7 illuminated in step SP12 is edited. The print data is supplied to the ticket issuing unit 15 via the interface 16, the ticket issuing unit 15 prints the ticket based on the print data, and the ticket is issued from the ticket issuing port 8 shown in FIG. At this time, the new balance is calculated by the CPU 10 shown in FIG. 1, and the data is
It is temporarily stored in the storage area E in the RAM 12 shown in the figure.

(14) Step SP14 Punch hole 25a corresponding to the new balance from CPU10 shown in FIG.
An operation instruction signal for emptying is transmitted. This allows
The pulse motor M ₁ starts and starts reverse rotation in the direction of arrow B. Belt V ₁ with the reverse rotation of the pulse motor M _1, V ₂
The magnetic card is carried by the number of pulses, and the process proceeds to step SP15.

However, if the range of the new balance is the same as the range of the old balance (when the new balance is between 100 yen and 300 yen in Fig. 3), it is not necessary to make a new punch hole 25a. Therefore, this step and step SP15 and step S described later
P16 is skipped and moves to step SP17.

(15) Step SP15 When the magnetic card is conveyed to a predetermined position for punching the punch hole 25a, the pulse motor M ₁ is stopped,
Move to SP16.

(16) Step SP16 The solenoid SL ₂ of the punch mechanism PU is excited, the punch hole 25a is opened in the magnetic card, and the process proceeds to step SP17.

(17) Step SP17 The pulse motor M ₁ again starts reverse rotation in the direction of arrow B, the magnetic card passes over the magnetic head HD, and the process proceeds to step SP18.

(18) Step SP18 When the magnetic card passes over the magnetic head HD, the magnetic head HD causes the second track T ₂ of the magnetic card to pass.
In FIG. 3, the new remaining amount of money temporarily stored in the storage area E in the RAM 12 shown in FIG. 1, the place of use and the date of use are written, and the magnetic card is further transported, and the process proceeds to step SP20.

(19) Step SP19 The pulse motor M ₁ starts reverse rotation in the direction of arrow B in response to the return instruction signal from the CPU 10 shown in FIG. ₁ , the magnetic card is conveyed in the card insertion slot 5 direction, and the process proceeds to step SP20.

(20) Step SP20 The magnetic card is partially extruded from the card insertion slot 5, and when the operator pulls out the magnetic card, the photo sensor P ₁ ,
P ₂ changes from the light shielding state to the light emitting state, and then proceeds to step SP21.

(21) Step SP21 After the pulse motor M ₁ is stopped, the automatic ticket vending machine is again in the ticket issuing standby state.

Next, when the new balance, the place of use and the date of use are written in the second track T ₂ (Fig. 3) of the magnetic card by the magnetic head HD (step SP18), the power supply to the automatic ticket vending machine is turned on. The operation procedure when the power is cut off and the power is supplied again will be described for each step of SP22 to SP29 shown in FIG. 5 (b).

(22) Step SP22 The power is turned on again, and the process proceeds to step SP23.

At this time, since the distance L between the card insertion slot 5 for inserting the magnetic card and the magnetic head HD is sufficient, even if an inertial force acts on the magnetic card, a part of the magnetic card is inserted. It does not protrude from the mouth 5, and the magnetic card is inside the card unit 21.

(23) Step SP23 The pulse motor M ₁ starts reverse rotation in the direction of arrow B, the magnetic card is conveyed in the direction of the card insertion slot 5, and this magnetic card
When the magnetic card is conveyed to the position of C ₁ (the tip of the magnetic card shields the photo sensors P ₁ and P ₂ from light), the pulse motor M ₁ starts to rotate in the direction of arrow A in the opposite direction. It is transported to the inside of 21, passes over the magnetic head HD, and moves to step SP24.

(24) Step SP24 When the magnetic card passes over the magnetic head HD, the magnetic head HD causes the first track T ₁ of the magnetic card to pass.
The magnetic data recorded in (FIG. 3) is read, and the CPU 10 shown in FIG. 1 saves the read data and the save area E in the RAM 12 at step SP3 shown in FIG. 5 (a). The data of the first track T _{1 being} recorded are compared to determine whether or not they are the same card. As a result, in the case of "NO", that is, when it is determined that they are not the same magnetic card, the process proceeds to step SP27. Meanwhile, "YE
When the result of "S" is obtained, the process proceeds to step SP25.

(25) Step SP25 The pulse motor M ₁ again starts reverse rotation in the direction of arrow B, the magnetic card passes over the magnetic head HD, and the process proceeds to step SP26.

(26) Step SP26 When the magnetic card passes over the magnetic head HD, the magnetic head HD causes the second track T ₂ of the magnetic card to pass.
The new remaining amount of money temporarily stored in the storage area E in the RAM 12 shown in FIG. 1, the place of use and the date of use are again written in (FIG. 3), and the magnetic card is further transported.
Go to 28.

(27) Step SP27 The pulse motor M ₁ starts reverse rotation in the direction of arrow B in response to the return instruction signal from the CPU 10 shown in FIG. ₁ , the magnetic card is conveyed in the card insertion slot 5 direction, and the process proceeds to step SP28.

(28) Step SP28 The magnetic card is partially extruded from the card insertion slot 5, and when the operator pulls out the magnetic card, the photo sensor P ₁ ,
P ₂ changes from the light shielding state to the light emitting state, and then proceeds to step SP29.

(29) Step SP29 After the pulse motor M ₁ is stopped, the automatic ticket vending machine is in an abnormal standby state, and the operation indicator 3 shown in FIG.

In the description of the above operation, the case where the magnetic card is normally conveyed has been described, but when the magnetic card is not normally conveyed, that is, when the magnetic card is writing data, the magnetic card is If it becomes necessary to turn off the power due to clogging, the clerk may remove the magnetic card, turn on the power again, and then insert the magnetic card again from the card insertion slot 5.

Further, in the above embodiment, the magnetic card processing device of the present invention is applied to an automatic ticket vending machine, but the present invention is not limited to this and can be applied to, for example, an automatic settlement machine.

[Advantages of the Invention] As described above, in the magnetic card processing device of the present invention, the power is turned off while data is being written to the magnetic card, data may not be written correctly, or the written data may be corrupted. Even if it happens, the necessary data will be automatically written to the magnetic card again.
There is an advantage that a clerk does not need to intervene as in the conventional case and the processing time is short.

[Brief description of drawings]

FIG. 1 is a block diagram showing the electrical construction of the magnetic card processing apparatus of the present invention, FIG. 2 is a perspective view showing the external construction of a magnetic card processing apparatus having the electrical construction shown in FIG. 1, and FIG. Is a plan view of a magnetic card used in the magnetic card processing device shown in FIG. 2, FIG. 4 is a side view showing the mechanical structure of the card unit shown in FIG. 1, and FIGS. 5 (a) and 5 (b) are 3 is a flow chart showing an operation procedure of an embodiment of the present invention. 5 …… Card insertion slot 10 …… CPU (central processing unit) 12 …… RAM (random access memory) 25 …… Magnetic card E …… Storage area HD …… Magnetic head M ₁ …… Pulse motor T ₁ …… No. 1st track (read only) T ₂ …… 2nd track (writable)

Claims (3)

[Scope of utility model registration request] 1. A magnetic card which can be used as cash for a machine by giving a monetary value in advance, a read-only track on which identifiable unique data of the card is recorded, and the remaining amount of the card. Using a magnetic card having a writable track for recording data for
In a magnetic card processing device having a magnetic head for reading and writing data of the magnetic card, it is used from the unique data recorded on the magnetic card, the remaining monetary value, and the remaining monetary value. Random access memory backed up by a battery so that data can be stored even when the power is off, and a storage area for temporarily storing data relating to each of the new remaining monetary value after deducting the monetary amount, and the data transferred in this device. A magnetic card that passes over the magnetic head after re-energization is performed when the power is turned off while data is being written on the writable track of the magnetic card and re-energized after that. Before the power is turned off, it is temporarily stored in the storage area as to whether it is the same as the magnetic card existing in this device. When it is determined that the card determining means and the card determining means based on existing unique data are the same card, the remaining monetary value temporarily stored in the storage area and the monetary value A magnetic card, comprising rewriting means for writing again predetermined data relating to a new remaining monetary value obtained by subtracting the used amount from the value in the writable track of this card. Processing equipment. 2. A storage area for temporarily storing each of the unique data recorded on the magnetic card, the remaining monetary value, and the new remaining monetary value obtained by subtracting the used amount from the monetary value. 2. The magnetic card processing device according to claim 1, wherein the magnetic card processing device is provided in a random access memory that stores various data used when a central processing unit that controls operations of each unit of the magnetic card processing device executes a program. 3. The power supply is turned off when the distance between the card insertion slot for inserting the magnetic card and the magnetic head is such that the magnetic card is being returned and conveyed and a part of the magnetic card is passing over the magnetic head. 3. Even if the motor for performing the return transportation is stopped and an inertial force is applied to the magnetic card, the magnetic card has a length long enough so that a part of the magnetic card does not protrude from the card insertion slot. The magnetic card processing device described.