JP2012185768A - Card reader/writer, card position information generation method, and card position information generation program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a card reader/writer hardly affected by a foreign body such as a receipt and a wad of dust entered into a card conveyance path.SOLUTION: Displacement sensors 1a, ... output signals 1a0, ... corresponding to displacements of driven rollers 2a, .... Levels of the signals 1a0, ... are at or less than a threshold value h1 when no foreign object is caught in between driving rollers 3a, ... and the driven rollers 2a, ... paired therewith, and at or between a threshold values h2 and h3 when a magnetic card 4 is caught in. When only a foreign object such as a receipt or a wad of dust entered into a conveyance path for the magnetic card 4, the levels exceed the threshold value h1 but remain less than the threshold value h2 and the foreign object is not erroneously recognized as the magnetic card 4 inserted. When a thin object such as the receipt is caught in, the levels become between the threshold values h1 and h2 and the thin object can be distinguished from the magnetic card 4.

Description

  The present invention relates to a card reader that performs at least one of reading and writing of information on an information recording card such as a magnetic card or an IC card in an ATM (automated teller machine), a POS (point-of-sale information management) system, or the like. The present invention relates to a card position information generation method and a card position information generation program applied to the / writer, and its card reader / writer.

  FIG. 3 is a conceptual diagram showing an outline of a main configuration of the card reader 100 for an information recording medium processing device disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2009-31890). As described in FIG. 1 of this Patent Document 1 and paragraphs 0033, 0034, and 0036 of the specification, the card reader 100 includes a card insertion slot 11 serving as a magnetic card or IC card taking-in port, external dust and It includes a shutter 13 for preventing foreign matter from entering, a solenoid 12 for displacing and driving the shutter 13, a conveying means for conveying the inserted card, a driving motor 14 for driving the conveying means, and sensors 1 to 5. The conveying means includes a first pair of rollers 15 and 16, a second pair of rollers 19 and 20, and a third pair of rollers 23 and 24. Rollers 15, 19 and 23 are drive rollers. Rollers 16, 20 and 24 are driven rollers and are driven by drive rollers 15, 19 and 23, respectively.

  Sensors 1 to 5 are optical position detection sensors that detect the end of the card inserted into the card reader 100, and sandwich the light-emitting element (photodiode) and the light-receiving element (photosensor) with the conveyance path therebetween. Arranged. The outputs of the sensors 1 to 5 change when the optical path between the light emitting element and the light receiving element is blocked by the card. Therefore, it is possible to grasp that the end portion of the card has passed through the optical path between the light emitting element and the light receiving element by the change in the output of the sensors 1 to 5. The card reader 100 detects the position of the card in the transport direction based on the signal output of the sensors 1-5.

JP 2009-31890 A

  As described above, the card reader 100 described in Patent Document 1 generates card position information based on a signal indicating when the end of the card has passed through the optical path by the optical position detection sensor including the sensors 1 to 5. The card position information generation method is adopted. However, in such a card position information generation method using an optical position detection sensor, if any light blocking object enters the optical path between the light emitting element and the light receiving element in the sensor, it is mistaken for a card even if it is not a card. Incorrect card position information is generated. As light blocking objects other than the card, that is, foreign matter, there are a receipt (receipt) that enters the card insertion slot 11 of the card reader 100, lint, lump of dust accumulated in the card reader / writer, and the like. is there. A lump of dust collected near the card transport path in the card reader / writer may adhere to the inserted card. A lump of dust collected on a member in the vicinity of the optical path in the card reader / writer may block the optical path.

  If the card has a transparent area, the optical position detection sensor detects not only the edge of the card but also the boundary between the transparent area and the opaque area in the card. The reader 100 cannot detect the correct position of the card.

  Further, in the optical position detection sensor of FIG. 3, since the light emitting element and the light receiving element are arranged on each side across the card conveyance path, the components cannot be concentrated in one place, and the configuration is It becomes complicated and makes it difficult to reduce the manufacturing cost of the entire card reader 100.

  Therefore, in order to solve such a problem, the present invention is less susceptible to the influence of a foreign substance such as a receipt that has entered the card transport path, can generate correct position information of a card having a transparent area, and is also provided on one side of the card transport path. It is an object of the present invention to provide a card reader / writer capable of integrating card position detection sensor components, a card position information generation method and a card position information generation program applicable to such a card reader / writer.

  In order to solve the above-described problems, the card reader / writer, the card position information generation method, and the card position information generation program according to the present invention mainly adopt the following characteristic configuration.

(1) A card reader / writer according to the present invention has a distance between a driving roller having a fixed position and a driving roller having a rotation center as a rotation center, parallel to the first axis and the first axis. A driving roller having a variable second shaft as a rotation center, and an urging force for pressing the driven roller toward the driving roller is applied to the second shaft; And an information recording card conveying means for conveying the information recording card by rotation of the driving roller.
A displacement sensor for detecting a displacement of the second axis with respect to the first axis;
Card position information generating means for generating information on the position of the information recording card in the transport direction based on the displacement detected by the displacement sensor.
(2) In the card position information generation method according to the present invention, a distance between a driving roller having a rotation center around a first axis whose position is fixed and a distance between the first axis and the first roller is parallel to the first axis. An information recording card between the drive roller and the driven roller is configured such that the second shaft is variable and the second shaft is urged so as to press the driven roller toward the drive roller. And the information recording card is conveyed by the rotation of the drive roller,
Detecting a displacement of the second axis relative to the first axis;
Based on the displacement, information on the position of the information recording card in the transport direction is generated.
(3) A card position information generation program according to the present invention is characterized in that the card position information generation method described in (2) above is implemented as a program executable by a computer.

  According to the present invention, it is difficult to be affected by a foreign substance such as a receipt entering the card conveyance path, and it is possible to generate correct position information of a card having a transparent area, and the card position detection sensor components are integrated on one side of the card conveyance path. The card position information generating method and card position information generating program applicable to such a card reader / writer can be provided.

It is a conceptual diagram which shows the outline | summary of the main structures of the card reader / writer which is one embodiment of this invention. It is a figure which shows the relationship between the conveyance direction position of the card | curd in the embodiment of FIG. 1, and a displacement sensor output. 1 is a conceptual diagram showing an outline of a main configuration of a card reader 100 for an information recording medium processing device disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2009-31890).

  Preferred embodiments of a card reader / writer and card position information generation method according to the present invention will be described below with reference to the accompanying drawings. In the following description, the card reader / writer and the card position information generation method according to the present invention will be mainly described. However, the method may be implemented as a card position information generation program executable by a computer. It goes without saying that the card position information generation program may be recorded on a computer-readable recording medium.

  The card reader / writer of the present embodiment is a device that performs at least one of reading and writing of information with respect to an information recording card such as a magnetic card or an IC card. That is, the card reader / writer according to the present embodiment is a device that only reads information recorded on an information recording card, a card writer that only writes information to the information recording card, and a device that only reads information recorded on the information recording card. It can be realized as any device that reads recorded information and writes information to an information recording card.

  FIG. 1 is a conceptual diagram showing an outline of the main configuration of a card reader / writer according to an embodiment of the present invention, and is a side view of the card reader / writer as viewed from the side in the card transport direction. FIG. 2 is a diagram showing the relationship between the position in the card transport direction and the displacement sensor output in the embodiment of FIG. In the figure, 1a, 1b, ... 1e are displacement sensors, 1a0, 1b0, ... 1e0 are the outputs of the displacement sensors 1a, 1b, ... 1e, 2a, 2b, ... 2e are driven rollers, 3a, 3b,... 3e are drive rollers, 4 is a magnetic card, 5 is a card position information generation control unit (corresponding to the card position information generation means described above), 50 is a motor control signal, 6 is a motor, and 7 is Each belt is shown. The card position information generation control unit 5 includes a CPU, a memory, and an input / output interface. Hereinafter, in the present embodiment, the case where the information recording card to be handled is the magnetic card 4 will be described. However, the information recording card to be handled in the present embodiment is not limited to the magnetic card 4 and may be an IC card, for example. Of course.

  The drive system for transporting the magnetic card 4 includes a motor 6, a drive belt 7, a plurality of pairs of drive rollers 3a, 3b,... 3e, and driven rollers 2a, 2b,. The The magnetic card 4 is sandwiched between the drive rollers 3a, 3b,... 3e and the driven rollers 2a, 2b,... 2e, and receives the force generated by the rotation of the drive rollers 3a, 3b,. Then, it is conveyed from the left side to the right side or from the right side to the left side in the figure. The conveyance direction 10 of the magnetic card 4 can be arbitrarily controlled by controlling the rotation direction of the motor 6 with the motor control signal 50 in either the left or right direction in the figure.

  The drive system for transporting the magnetic card 4 will be described in more detail. The rotation of the motor 6 is transmitted to the drive rollers 3a, 3b,... 3e via the drive belt 7, and the drive rollers 3a, 3b,. The driving roller 3a and the driven roller 2a are disposed to face each other with their rotation axes parallel to each other, and form a pair. Further, the shaft of the driven roller 2a is supported so that the distance from the shaft of the driving roller 3a is variable while maintaining parallel to the shaft of the driving roller 3a, and is directed in the direction of the shaft of the driving roller 3a. The driven roller 2a is pressed against the driving roller 3a. The force that directs the axis of the driven roller 2a in the direction of the axis of the driving roller 3a, that is, the urging force, uses the casing of the card reader / writer as a fulcrum and the axis of the driven roller 2a in the direction of the axis of the driving roller 3a. Provided by a spring that pushes or pulls. When the magnetic card 4 is not sandwiched between the driven roller 2a and the driving roller 3a, there is friction between the driven roller 2a and the driving roller 3a. Therefore, when the driving roller 3a rotates, the driven roller 2a Is rotated by receiving a rotational force from the driving roller 3a.

  Similarly, the driving rollers 3b, 3c, 3d and 3e are paired with the driven rollers 2b, 2c, 2d and 2e, respectively, and when the magnetic card 4 is not sandwiched between them, the driven rollers 2b, 2c, 2d and 2e rotates by receiving rotational force from the driving rollers 3b, 3c, 3d and 3e, respectively.

  Now, as shown in FIGS. 1 and 2, it is assumed that the magnetic card 4 is inserted between the driving roller 3a and the driven roller 2a. Then, the magnetic card 4 receives the force due to the rotation of the driving roller 3a, and is conveyed in the right direction in the figure, and is sandwiched between the next driving roller 3b and the driven roller 2b from the end (front end) in the conveying direction, It is conveyed further to the right, and is further sandwiched sequentially between the driving roller 3c and the driven roller 2c, between the driving roller 3d and the driven roller 2d, and between the driving roller 3e and the driven roller 2e, and conveyed to the right. The The driven rollers 2a, 2b,... 2e move up and down in the direction of arrow 11 depending on whether or not the magnetic card 4 is sandwiched between the pair of driving rollers 3a, 3b,. Move. By reversing the rotation direction of the motor 6 and reversing the rotation direction of the belt 7, the magnetic card 4 sandwiched between the driving roller 3e and the driven roller 2e is conveyed leftward, and the leftmost driving roller 3a. And the driven roller 2a, the magnetic card 4 can be sent leftward.

  When the magnetic card 4 is sandwiched between the driving roller 3a and the driven roller 2a, the driven roller 2a is displaced upward in the figure by the thickness of the magnetic card 4. The displacement sensor 1a detects the displacement and generates a level of the displacement sensor output 1a0. Similarly, when the magnetic card 4 is sandwiched between the driving rollers 3b, 3c, 3d and 3e and the corresponding driven rollers 2b, 2c, 2d and 2e, the displacement sensors 1b, 1c, 1d and 1e are driven. The displacements of the rollers 2b, 2c, 2d and 2e are detected, and displacement sensor outputs 1b0, 1c0, 1d0 and 1e0 are generated, respectively. As the displacement sensors 1a, 1b,... 1e, a well-known optical type or magnetic type can be used.

  When the magnetic card 4 is not sandwiched between the driving rollers 3a, 3b, ... 3e and the driven rollers 2a, 2b, ... 2e, the displacement sensor outputs 1a0, 1b0, ... 1e0 levels. Is less than or equal to the first threshold value h1. The first threshold value h1 is the maximum level of the displacement sensor outputs 1a0, 1b0,... 1e0 when the driven rollers 2a, 2b,... 2e are in contact with the driving rollers 3a, 3b,. Corresponds to the value. When the magnetic card 4 is sandwiched between the driving rollers 3a, 3b, ... 3e and the driven rollers 2a, 2b, ... 2e, the displacement sensor outputs 1a0, 1b0, ... 1e0 levels. Is greater than or equal to the second threshold h2 and less than or equal to the third threshold h3. The second threshold value h2 and the third threshold value h3 correspond to the allowable minimum value and the allowable maximum value in the standard of the magnetic card 4 respectively.

  In FIG. 2, the magnetic card 4 is sequentially sandwiched between the driving rollers 3a, 3b,... 3e and the driven rollers 2a, 2b,. It is a figure which shows the output 1a0, 1b0, ... 1e0 of the displacement sensors 1a, 1b, ... 1e when the magnetic card 4 is conveyed. The output 1a0 of the displacement sensor 1a indicates that the magnetic card 4 (medium) exists between the driving roller 3a and the driven roller 2a between times t1 and t2. The rising edge of the output 1a0 represents the time when the front end of the magnetic card 4 in the carrying direction is sandwiched between the driving roller 3a and the driven roller 2a. The falling edge of the output 1a0 is the trailing edge of the magnetic card 4 in the carrying direction. A time when the drive roller 3a and the driven roller 2a are separated from each other is shown. Similarly, the rise and fall of the displacement sensor outputs 1b0, 1c0, 1d0 and 1e0 are caused between the driving rollers 3b, 3c, 3d and 3e and the pair of driven rollers 2b, 2c, 2d and 2e, respectively. 4 represents a time when 4 is sandwiched and a time when it is separated from the time.

  The amplitude of the displacement sensor outputs 1a0, 1b0,... 1e0 corresponds to the thickness of the object sandwiched between the driving rollers 3a, 3b,... 3e and the driven rollers 2a, 2b,. Yes. Then, the first threshold value h1, the second threshold value h2, and the third threshold value h3 are set in the card position information generation control unit 5. When the amplitude of the displacement sensor outputs 1a0, 1b0,... 1e0 is smaller than the first threshold value h1, the card position information generation control unit 5 causes the driven rollers 2a, 2b,. ... it is determined that 3e is in contact, that is, nothing is sandwiched between the paired drive roller and driven roller. Further, the card position information generation control unit 5 determines that the amplitude of the displacement sensor outputs 1a0, 1b0,... 1e0 exceeds the first threshold value h1, is equal to or greater than the second threshold value h2, and is a third threshold value. When the level reaches h3 or less, the driven rollers 2a, 2b,... 2e and the driving rollers 3a, 3b,... 3e, that is, between the pair of driving rollers and driven rollers. It is determined that the magnetic card 4 is sandwiched.

  On the other hand, the card position information generation control unit 5 determines that the time during which the amplitude of the displacement sensor outputs 1a0, 1b0,... 1e0 is a value between the first threshold value h1 and the second threshold value h2 is the first value. When it continues beyond a predetermined time, it is determined that a foreign object has been sandwiched between the pair of driving roller and driven roller, and an abnormal warning is generated. The card position information generation control unit 5 also detects foreign matter between the pair of driving roller and driven roller even when the amplitude of the displacement sensor outputs 1a0, 1b0,... 1e0 exceeds the third threshold value h3. It is determined that it has been pinched, and an abnormal warning is generated.

  For example, if the foreign matter is a receipt, the thickness of the receipt is thinner than the thickness of the magnetic card 4, so the card position information generation control unit 5 in the card reader / writer of the embodiment uses the displacement sensor outputs 1a0, 1b0,. It is determined that the thickness of the detected object corresponding to the amplitude of 1e0 is not between the second threshold value h2 and the third threshold value h3, and the object detected by the motor control signal 50 output from the card position information generation control unit 5 The foreign matter (receipt) can be discharged to the outside from the card insertion slot side by rotating the motor 6 in the direction of discharging the card from the card insertion slot side.

  The card position information generation control unit 5 receives the displacement sensor outputs 1a0, 1b0, 1c0, 1d0 and 1e0, and the thickness of the detected object determined from the displacement sensor outputs 1a0, 1b0, 1c0, 1d0 and 1e0 is the second threshold value. When it is between h2 and the third threshold value h3, the detected object is determined to be the magnetic card 4, information on the position of the magnetic card 4 in the transport direction is generated, and a motor control signal 50 is generated based on this information. Then, the rotation of the motor 6 is controlled, and information recorded on the magnetic card 4 is read or information is written to the magnetic card 4.

  In the embodiment described with reference to FIGS. 1 and 2, the position of the magnetic card 4 in the transport direction is detected by the displacement sensors 1a, 1b,... 1e. In the card reader 100 shown in FIG. 3, since the position in the conveyance direction of the magnetic card 4 is detected by the optical position detection sensor, as described above, a foreign substance such as a receipt or a lump of dust entering the card conveyance path. There is a problem to be solved that correct position information cannot be generated for a card with a transparent area, and parts of the card position detection sensor have to be arranged on both sides of the card transport path. In the present embodiment, all of these problems are solved.

  That is, according to the present embodiment, even if foreign matter such as a receipt adheres to the magnetic card 4 or a lump of dust accumulated in the card reader / writer enters the card conveyance path, the influence of the foreign matter is reduced. Without being received, the displacement sensor 1a, 1b,... 1e can accurately detect when the magnetic card 4 is sandwiched between the driving roller and the driven roller and when the magnetic card 4 is separated from the drive roller and the driven roller. Can generate correct information regarding the position of the magnetic card 4.

  In this embodiment, the displacement sensors 1a, 1b,... 1e as card position detection sensors do not directly detect the presence or absence of the magnetic card 4, but the magnetic card 4 is driven by the driving rollers 3a, 3b,. .. Detects displacement of the driven rollers 2a, 2b,... 2e due to being sandwiched between 3e and the driven rollers 2a, 2b,. Therefore, the card position detection sensors (displacement sensors 1a, 1b,... 1e) can be arranged at a position away from the conveyance path, not the card conveyance path where foreign matters such as dust tend to accumulate. As described above, by adopting the present embodiment, the card position detection sensor can be installed separately from the card transport path, so that it is possible to obtain an effect that the card position is not easily affected by a foreign object.

  Further, according to the present embodiment, the position of the magnetic card 4 in the transport direction is detected by the displacement sensors 1a, 1b,... 1e, and the opacity of the magnetic card 4 is not a requirement for detecting the position of the magnetic card 4. Therefore, even with a card having a transparent area, correct position information of the card can be generated.

  Furthermore, according to the present embodiment, the displacement sensors 1a, 1b,... 1e can collect the components of the card position detection sensor on one side of the card conveyance path as shown in FIGS. The card position detection sensor itself and the assembly cost of the card reader / writer can be reduced.

  In this embodiment, if the displacement sensors 1a, 1b,... 1e are excellent in position detection accuracy, the deformation of the magnetic card 4 based on the displacement sensor outputs 1a0, 1b0, 1c0, 1d0 and 1e0, Since it is possible to infer cracks, defects, etc., when an error occurs in reading or writing of the magnetic card 4, the user of the card reader / writer is informed of the type of abnormality and the possibility of abnormality in the magnetic card 4. Is possible.

  In this embodiment, displacement sensors 1a, 1b,... 1e as card position detection sensors are sandwiched between drive rollers 3a, 3b,... 3e and driven rollers 2a, 2b,. Since the displacement sensor outputs 1a0, 1b0, 1c0, 1d0 and 1e0 representing the thickness of the detected object are generated, the first threshold value h1, the second threshold value h2, and the third threshold value h3 are set in advance to the card position information generation control unit. By comparing the displacement sensor outputs 1a0, 1b0, 1c0, 1d0 and 1e0 with the threshold values h1, h2 and h3, the object sandwiched between the paired driving roller and the driven roller is set to 5. It can be determined that the card is not a magnetic card, that is, a foreign object. If it is determined that the object is a foreign object, the motor 6 is reversed by the motor control signal 50 output from the card position information generation control unit 5 to discharge the foreign object. It is possible.

  The card reader / writer of the present invention is a device that performs at least one of reading and writing of information with respect to an information recording card such as a magnetic card or an IC card. That is, the card reader / writer according to the present invention is recorded on the information reading card only device for reading information recorded on the information recording card, the card writer recording only reading device for writing information to the information recording card, and the information recording card. The present invention can be applied to any apparatus that reads information and writes information to an information recording card.

    The configuration of the preferred embodiment of the present invention has been described above. However, it should be noted that such embodiments are merely examples of the present invention and do not limit the present invention in any way. Those skilled in the art will readily understand that various modifications and changes can be made according to a specific application without departing from the gist of the present invention. For example, based on the length of time that the displacement sensor outputs 1a0, 1b0, 1c0, 1d0, and 1e0 exceed the first threshold value h1, the type of the object sandwiched between the paired driving roller and the driven roller is estimated, Depending on the type, it is possible to design a program of the card position information generation control unit so as to provide appropriate guidance to the card reader / writer user.

1a, 1b, ... 1e Displacement sensors 1a0, 1b0, ... 1e0 Displacement sensor outputs 2a, 2b, ... 2e Driven rollers 3a, 3b, ... 3e Drive roller 4 Magnetic card 5 Card position information generation control 50 Motor control signal 6 Motor 7 Belt

Claims (10)

The rotation center is a driving roller centering on the first shaft whose position is fixed and the second shaft that is parallel to the first shaft and variable in distance from the first shaft. And an urging force for pressing the driven roller toward the driving roller is applied to the second shaft, and an information recording card is interposed between the driving roller and the driven roller. An information recording card transporting means for sandwiching and transporting the information recording card by rotation of the drive roller;
A displacement sensor for detecting a displacement of the second axis with respect to the first axis;
A card reader / writer comprising card position information generating means for generating information on the position of the information recording card in the transport direction based on the displacement detected by the displacement sensor. The direction of conveyance is perpendicular to a plane including the first and second axes;
When the information recording card is not sandwiched between the driving roller and the driven roller, the driving roller and the driven roller are in contact with each other,
When the displacement rises from the first threshold value or less to a value that is greater than or equal to the second threshold value and less than or equal to the third threshold value, the card position information generating means causes the end of the information recording card in the transport direction to be driven. Judge that it is located between the roller and the driven roller,
The first threshold corresponds to a state in which the driven roller is in contact with the driving roller,
The card reader / writer according to claim 1, wherein the second and third threshold values respectively correspond to an allowable minimum value and an allowable maximum value in a standard of the information recording card. When a pair of rollers composed of the driving roller and the driven roller rotated by the rotational force of the driving roller is referred to as a single conveying roller, the information recording card conveying means is configured to space the plural conveying rollers in the conveying direction. Opened and arranged,
The displacement sensor is provided corresponding to each driven roller in the transport roller,
When the envelope surface formed by connecting the information recording card holding surfaces of the drive roller and the driven roller in the respective transport rollers arranged at intervals in the transport direction is referred to as a card transport surface, the displacement sensor is The card reader / writer according to claim 1, wherein the card reader / writer is provided only on one side with respect to the card transport surface.   3. The card position information generating means generates an abnormality warning when a time during which the displacement is a value between a first threshold value and a second threshold value exceeds a predetermined time. Or the card reader / writer according to any one of 3;   5. The card reader / writer according to claim 2, wherein when the displacement exceeds a third threshold value, the card position information generation unit generates an abnormality warning. The rotation axis is a driving roller having a first axis whose position is fixed as a rotation center and a second axis that is parallel to the first axis and variable in distance from the first axis. The second shaft is urged so as to press the driven roller toward the driving roller, an information recording card is sandwiched between the driving roller and the driven roller, and the information recording card is rotated by the rotation of the driving roller. Transport the
Detecting a displacement of the second axis relative to the first axis;
A card position information generation method for generating information on the position of the information recording card in the transport direction based on the displacement. The direction perpendicular to the plane including the first and second axes is the transport direction,
When an information recording card is not sandwiched between the driving roller and the driven roller, the driving roller and the driven roller are brought into contact with each other,
When the displacement increases from the first threshold value or lower to a value equal to or higher than the second threshold value and equal to or lower than the third threshold value, the end in the transport direction of the information recording card is between the driving roller and the driven roller. It is determined that
The first threshold corresponds to a state in which the driven roller is in contact with the driving roller,
The card position information generation method according to claim 6, wherein the second and third threshold values respectively correspond to an allowable minimum value and an allowable maximum value in the standard of the information recording card. When a pair of rollers composed of the driving roller and the driven roller rotated by the rotational force of the driving roller is referred to as one conveying roller, a plurality of the conveying rollers are arranged at intervals in the conveying direction.
The displacement sensor is provided corresponding to each driven roller in the transport roller,
When an enveloping surface formed by connecting the information recording card holding surfaces of the drive roller and the driven roller in each of the transport rollers arranged at intervals in the transport direction is referred to as a card transport surface, The card position information generating method according to claim 6, wherein the displacement sensor is provided only on one side.   The abnormality warning is generated when the time during which the displacement is a value between the first threshold value and the second threshold value exceeds a predetermined time. The card position information generation method described on one side. 10. A card position information generation program that implements the card position information generation method according to claim 6 as a program executable by a computer.

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