JPS61122903A - Magnetic recording medium and information processing unit of magnetic recording medium - Google Patents

Abstract

PURPOSE:To prevent to copy, forge and alter a card by shifting a magnetic head at a right angle in the transport direction of the recording media, executing the writing and forming a special data track on the recording media. CONSTITUTION:A magnetic head 4 is fixed to a sliding block 5, and a block 5 is installed in a reciprocating manner in the (c) direction of an arrow at a right angle in the transport direction of the recording media by a spiral gear 7 interlocking with a step motor 6. Presently, when magnetic recording media P are transported in the (a) direction of an arrow by rollers 1 and 2, the motor 6 is driven through a timing disk 10 of a platen roller 3 and a head 4 is shifted in the (c) direction. Consequently, an inclination-shaped special data track 13 is recorded on the media P. For this reason, when the exclusive-use reading device is used, the reading and writing can be executed, when the copying is executed, the asymmetry is obtained and the forging and altering can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a magnetic recording medium having a special data track and an information processing apparatus for a magnetic recording medium, in an apparatus for writing/reading on a magnetic recording medium.

[Technical background of the invention and its problems]

In recent years, carrying around large amounts of banknotes and coins at all times has the risk of being lost or stolen, or the inconvenience of having to calculate the amount required for a transaction. Therefore, in order to solve these problems, in the financial industry, stored value certificates such as telephone cards, for example, have been developed and are becoming popular. These cards are securities, and most of the information recorded on the cards is magnetically recorded, and since information is exchanged during transactions, the magnetic information recorded on the cards is There is a risk that information may be copied by thermal transfer or tampered with. Therefore, with the spread of the above-mentioned cards, measures to prevent these problems have become desirable.

[Purpose of the invention]

The present invention has been made based on the above-mentioned circumstances.
c. It is an object of the present invention to provide a magnetic recording medium and an information processing apparatus for the magnetic recording medium for producing a magnetic recording medium having a data track of a special shape or for reading data from the magnetic recording medium.

[Summary of the invention]

In order to achieve the above object, the present invention is directed to a magnetic recording medium that is conveyed in a constant direction and speed while moving at right angles to the conveying direction of the magnetic recording medium and parallel to the magnetic surface of the recording medium. This is characterized in that a special data track is formed for writing data.

[Embodiments of the invention]

The present invention will be explained below based on an embodiment shown in FIGS. 1 and 2. FIG. 1 is a perspective view showing the configuration of this device. In the figure, (1) and (2) are feed rollers that sandwich a magnetic recording medium (I) in which a magnetic layer is provided on the entire surface or a part of the recording medium and convey it at a constant speed in the direction of arrow a. (11, (carried by 21.

A platen roller (3) and a magnetic head (4) are disposed facing each other on the conveyance path of the magnetic recording medium (P) being fed, and the magnetic head (4) is spaced apart from the platen roller (3) by a certain distance. The platen roller (3) is configured to be able to move in the axial direction of the platen roller (3) while holding the platen roller (3). That is, the magnetic head (4) is fixed to the end of the slide block (5), and the slide block (5) is equipped with a step motor (
6) and a spiral gear (7) that interlocks with this spiral gear (7).
Guide rods (8) arranged parallel to the platen rollers (3) are respectively inserted in parallel to the shafts (3a) of the platen rollers (3), and are reciprocated in the direction of arrow C by the drive of the motor (6). It has become.

Further, an optical sensor (9) is arranged on the conveyance path between the feed rows y(1), (2) and the platen roller (3), and the magnetic recording medium (P) is transferred to the optical sensor ( 9)
The position of the leading edge of the magnetic recording medium (P) is detected by detecting the
) is a comb to start. That is, the shaft (3a) K of the platen roller (3) is the timing disc (
1G is fitted, and a disk sensor αυ is disposed in engagement with this timing disk holder. When the optical sensor (9) detects the leading edge of the magnetic recording medium [P], the magnetic recording medium (Pl) is inserted. The step motor (6) is driven via the control unit α in synchronization with the timing disc tilt, which rotates at a speed proportional to the transport speed, and the pulses generated by the disc sensors αυ and K. For example, when the disk sensor αυ generates two pulses, a drive pulse is sent to the step motor.

The platen roller (3) applies a conveying force while pressing the magnetic recording medium toward the magnetic head (4), and has an appropriate elasticity and frictional force on its surface.

FIG. 2 shows the surface of a magnetic recording medium on which special data tracks are formed by this apparatus.

Next, the operation of the present invention based on the above configuration will be explained. In FIG. 1, it is assumed that the platen roller (3) is rotatable and stationary.

Now, the magnetic recording medium (P) is moved between the feed rollers (1), (2
), the magnetic recording medium (P) is conveyed in the direction of arrow a by an optical sensor (9) provided on the conveyance path.
The tip of the is detected. Then, the step motor (6) is started clockwise after a certain period of time via the control unit (ls5) by being fed into the platen roller (3). That is, the magnetic recording medium (
P) is held between the platen roller (3) and the magnetic head (4), the platen roller (3) rotates at a speed proportional to the transport speed of the magnetic recording medium (Pl). The timing disc tilt fitted on the shaft (3a) of the roller (3) and the timing disc Q
(The step motor (6) is driven and rotated via the control unit α2 in synchronization with the pulses generated by the IK-engaged disc sensor (11J).

Then, the helical gear (7) interlocks with the step motor (6).
) rotates in the direction of the arrow C, and as a result of this rotation, the slide block (5) to which the magnetic head (4) is fixed slides in the direction of the arrow C along the guide holder (8)K. Therefore, the magnetic head (4) moves on the magnetic recording medium (P) in a direction perpendicular to the conveying direction of the magnetic recording medium (P), and a special data track 0 is formed to magnetically write data. will be carried out. Here, install the above magnetic head (4
) is set to be proportional to the transport speed of magnetic recording medium a), one magnetic recording medium C
Since writing is performed by moving the other magnetic head (4) at a constant speed in the direction perpendicular to the conveyance speed of the magnetic recording medium (I) while the magnetic head (P) is conveyed at a constant speed in the longitudinal direction, data track No. It can be formed into an inclined linear shape as shown in FIG. Furthermore, if the transport speed of the magnetic head (4) is set to be a certain function with respect to the transport speed of the magnetic recording medium (I), an arbitrary curve as shown in FIG. It is also possible to form a data track with a shape.

[Effect of idea]

As explained above, according to the present invention, it is possible to form a data track in a special shape, such as an inclined or curved shape, on a magnetic recording medium. It cannot be read or written to. In addition, if the step motor for moving the magnetic head is controlled so as to form a track with an asymmetric shape with respect to the center line or center point of the magnetic recording medium, the surface of the magnetic recording medium on which data is magnetically recorded and the data can be magnetically aligned. Even if the data is copied by thermal transfer by overlapping the surface of an unrecorded magnetic recording medium, the data track becomes asymmetrical, so it is impossible to read the copied recording medium with the same reading device.

Therefore, it is extremely difficult to copy, forge or tamper with the magnetic recording medium provided with the specially shaped data tracks, and this has the excellent effect of achieving the initial purpose.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an information processing device showing an embodiment of the present invention, FIG. 2 is a plan view showing an example of a magnetic recording medium on which inclined linear data tracks are formed by the device, and FIG.
The figure is a plan view showing another example of a magnetic recording medium in which curved data tracks are formed. P... Magnetic recording medium 1.2... Feed roller (conveying means) 3... Platen row 2 4... Magnetic head 5...
slide block

Claims (3)

[Claims] (1) In an information processing device that writes or reads data on a magnetic recording medium, there is provided a conveying means for conveying the magnetic recording medium in a predetermined direction, and a conveying means for conveying the magnetic recording medium in the conveying direction by the conveying means. a slide mechanism that is movable in a direction perpendicular to the magnetic recording medium and in a direction parallel to the surface of the recording medium; a platen roller for pressing the magnetic recording medium against the magnetic head and conveying it; a drive means for operating the slide mechanism; and a drive means for moving the magnetic head to the platen while controlling the drive means. An information processing device for a magnetic recording medium, comprising a control means for performing magnetic writing or reading on the magnetic recording medium while moving in the axial direction of a roller. (2) A magnetic recording medium provided entirely or partially with a magnetic recording layer, characterized in that data tracks written on the magnetic recording layer are formed obliquely with respect to the transport direction. (3) The magnetic recording medium according to claim 2, wherein the data track is formed in a curved line with respect to the transport direction.