JPH09180106A - Magnetic recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording device capable of producing magnetic cards of high reliability in a large volume and inexpensively. SOLUTION: A speed sensor 52 detects feeding speed of an original magnetic roll 32. A control part 56, based on the detected feeding speed, generates a recording timing so that magnetic recording density to be written by a magnetic head 66 in the direction of Y becomes constant. The magnetic head 66 writes successively transmitted recording information in the original magnetic roll 32 according to the generated recording timing. Thus, the magnetic recording density of the recording information to be written in the direction of Y can be kept constant irrespective of the feeding speed of the original magnetic roll 32 by controlling the recording timing based on the feeding speed of the original magnetic roll 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording apparatus and a magnetic recording method, and more particularly to a technique for performing magnetic recording on a magnetic material roll.

[0002]

2. Description of the Related Art A prepaid card is known as a magnetic card that can be purchased by paying for it in advance and then paying for the price of goods without using cash. The prepaid card has a denomination (500 yen, 1000
Specific information such as yen), issue date, issuer name, serial number, and variable information such as prepaid amount are written in advance as initial information.

In order to manufacture a prepaid card, first,
A magnetic material coated with a magnetic material is cut into a card shape.
Next, the above-mentioned initial information is magnetically recorded on a predetermined track for each cut card using a predetermined magnetic recording recording / reproducing device. In this way, a prepaid card in which predetermined initial information is written can be manufactured.

However, with the advent of the cashless era in recent years, the consumption of prepaid cards has increased, and a large amount of prepaid cards has been required to be supplied. In the above-described manufacturing method for writing the initial information for each cut card, the writing operation becomes a bottleneck and the production efficiency is low. In addition, the writing work is often performed manually by an operator, which causes an increase in labor cost and an increase in manufacturing cost.

[0005]

Therefore, in order to solve such a problem, as shown in FIG. 13, a method of recording initial information in advance on a magnetic material sheet 32 before cutting into a card shape. Can also be considered. According to this method, it is possible to omit writing the initial information later for each cut card.

However, the method of manufacturing the prepaid card shown in FIG. 13 has the following problems. First, when the initial information is recorded on the magnetic material 32, the magnetic recording density of the magnetic material 32 is likely to fluctuate (disperse) in the transport direction (Y direction), and the material loss of the magnetic material 32 is reduced. large. This is for the following reason.

As the magnetic raw material 32, generally, a roll-shaped raw material obtained by applying a magnetic material to a support made of a synthetic resin film and winding the magnetic material in a roll is used. Magnetic roll 3
2 is usually about 1 m in width (X direction) and 1000 in length
Since it is about m to 5000 m, the weight of the roll-shaped raw material wound around it reaches several hundred kgf. Therefore, when a drive motor (not shown) of the carrying device (not shown) drives the magnetic material sheet 32 in the Y direction, it takes a considerable time to reach a predetermined carrying speed, and during that time, the carrying speed is Gradually increase.

However, the recording timing of the magnetic head 36 is constant. Therefore, in order to prevent the magnetic recording density in the transport direction from fluctuating, after starting the operation of the transport device,
No information is recorded on the magnetic original sheet 32 that is conveyed until the predetermined conveying speed is reached. The portion (100 m to 200 m) where this information is not stored is the material loss. Therefore, the yield is low and the manufacturing cost is increased.

Further, even after the predetermined transport speed is reached, the transport speed of the magnetic material 32 may vary due to variations in the transport resistance. In such a case, the magnetic material 32
The magnetic recording density of the information recorded in the recording medium varies in the transport direction. Therefore, the prepaid card manufactured by such a manufacturing method is apt to be erroneously read during use and lacks reliability. Further, since such a defective card must be eliminated, the manufacturing cost also rises.

The present invention solves the problems of manufacturing a conventional magnetic card such as such a prepaid card, and the magnetic recording density of the magnetic material sheet 32 in the transport direction (Y direction) is small and reliable. An object of the present invention is to provide a magnetic recording device capable of manufacturing a high magnetic card in large quantities at low cost.

Secondly, the cutting position in the carrying direction cannot be clearly known. Therefore, the cutting position in the transport direction may vary with respect to the written magnetic information. Therefore, the prepaid card manufactured by such a manufacturing method is liable to cause erroneous reading during use and lacks reliability. Further, since such a defective card must be eliminated, the manufacturing cost also rises.

The present invention solves the problems of manufacturing a conventional magnetic card such as a prepaid card, and provides a highly reliable magnetic card in which the cutting position in the conveying direction with respect to the written magnetic information is small. An object of the present invention is to provide a magnetic recording device that can be mass-produced at low cost.

In summary, the present invention solves the problems in manufacturing magnetic cards such as conventional prepaid cards,
An object of the present invention is to provide a magnetic recording device capable of mass-producing inexpensive and highly reliable magnetic cards.

[0014]

According to a first aspect of the present invention, there is provided a magnetic recording apparatus which conveys a magnetic material sheet, while conveying the magnetic material sheet to one or more recording tracks on the magnetic material sheet set in parallel with a conveying direction. In a magnetic recording apparatus including a magnetic recording unit having one or more magnetic heads for magnetically recording predetermined information corresponding to a recording track to be recorded, a magnetic recording density in the direction of the recording track on the magnetic material roll. Is configured to be constant regardless of the transport speed of the magnetic material.

A magnetic recording apparatus according to a second aspect of the present invention is the magnetic recording apparatus according to the first aspect, wherein the magnetic field is detected based on a speed sensor for detecting a conveying speed of the magnetic original sheet and a conveying speed of the magnetic original sheet detected by the speed sensor. Recording timing control means for controlling the recording timing of the head is provided.

According to a third aspect of the present invention, there is provided a magnetic recording apparatus, which conveys a magnetic material, and conveys predetermined information magnetically to one or more recording tracks on the magnetic material which are set in parallel with a conveying direction. In a magnetic recording apparatus provided with a magnetic recording means having one or more magnetic heads for recording corresponding to recording tracks to be recorded, in synchronization with the recording timing of the magnetic heads, a magnetic material for a post-process is formed. It is characterized in that mark providing means for providing a work mark is provided.

A magnetic recording apparatus according to a fourth aspect is the magnetic recording apparatus according to the third aspect, characterized in that an ink jet printing apparatus is provided as a mark giving means.

[0018]

[Definition of terms] The concept of terms in the claims is defined as follows.

"Magnetic original fabric": A continuous strip-shaped member comprising at least one magnetic layer and at least one support for supporting the magnetic layer, and magnetic writing, protective layer coating, It does not matter whether or not processing such as printing is performed.

[0020]

The magnetic recording device according to the present invention is characterized in that the magnetic recording density in the direction of the recording track on the magnetic material roll is constant regardless of the transport speed of the magnetic material roll.

Therefore, even if the weight of the magnetic material is large and it takes a considerable time to reach the predetermined conveying speed, the recording information can be written in the magnetic material at a constant magnetic recording density during that time. . Further, even when the transport speed of the magnetic material sheet varies due to the variation of the transport resistance or the like, the recording information can be written in the magnetic material sheet at a constant magnetic recording density. For this reason, the material loss of the magnetic material is small and erroneous reading is unlikely to occur when the card is used. That is, a highly reliable magnetic card can be mass-produced at low cost.

According to another aspect of the magnetic recording apparatus of the present invention, the recording timing of the magnetic head is controlled on the basis of the transport speed of the magnetic material web detected by the speed sensor. Therefore, it is possible to detect the transport speed of the magnetic original sheet and control the recording timing of the magnetic head with high accuracy based on the detected speed information. That is, the uniformity of the magnetic recording density can be further enhanced.

A magnetic recording apparatus according to a third aspect of the present invention is characterized in that a work mark for a post-process is provided on the magnetic material sheet in synchronization with the recording timing of the magnetic head.

Therefore, the positional relationship between the recording track and the work marker in the carrying direction is always constant. For this reason,
When cutting or the like is performed in a subsequent process, by positioning the work marks as a reference, the deviation between the recording track and the outer shape of the card in the carrying direction can be suppressed to an extremely small value. That is, a highly reliable magnetic card can be mass-produced at low cost.

A magnetic recording apparatus according to a fourth aspect is characterized in that an ink jet printing apparatus is provided as the mark applying means.

Therefore, it is possible to apply the work mark to the magnetic original fabric in a non-contact manner. For this reason, it is not necessary to stop the transport of the magnetic material sheet when applying the work mark. That is, the work mark can be provided without any trouble in writing the recorded information on the magnetic original fabric.

[0027]

FIG. 1 shows the overall structure of a magnetic recording device 40 according to an embodiment of the present invention. The magnetic recording device 40 includes an original transport unit 42 that is a transport unit, a magnetic head group 44 that is a magnetic recording unit, a position sensor 46 that is an end position detection unit, an actuator 48, and a gap sensor 50 that is a space gap detection unit. A laser Doppler type speed sensor 52 which is a speed sensor, an ink jet printing device 54 which is a mark providing unit, and a control unit 56 are provided.

In this embodiment, the CPU 6 (see FIG. 5) and the actuator 48, which will be described later, constitute magnetic head position control means. CPU6
The write amplifier 26 (see FIG. 5) described later constitutes a write current adjusting means. Also, a CPU to be described later
6 and the D / A converter 24 (see FIG. 5) constitute recording timing control means.

The original fabric conveying section 42 includes a fixing member (not shown), an original fabric winding motor (not shown) fixed to the fixing member, and a winding roller 60 rotatably provided with respect to the fixing member. , A feeding roller 62, and one or more support rollers 64.

The roll-shaped magnetic raw material 32 is held by the feeding roller 62. The winding roller 60 driven by the original web winding motor, via the support roller 64,
The magnetic material 32 is wound up. In this way, the original fabric conveying section 42 conveys the magnetic original fabric 32 in the Y direction. It is also possible to transport the original fabric by driving the support roller 64 by the original fabric winding motor.

As shown in FIG. 2, the position sensor 46 measures the width of the light emitted from the light projecting portion 46a and reaching the light receiving portion 46b, whereby one end portion of the magnetic original 32 is measured. The position of 32a in the X direction is detected. The detected position of the end portion 32a in the X direction is input to the control unit 56.

The speed sensor 52 is a laser Doppler type speed sensor. As a velocimeter using a laser, a method of obtaining the velocity from the frequency shift of scattered light from a moving body, a method of obtaining the velocity from the interval of interference fringes and the cycle of light and dark,
There is a method of obtaining the velocity from the movement of the speckle pattern or the diffraction pattern, and any of them can be used without any problem. In this embodiment, a method of obtaining the velocity from the frequency shift of the scattered light of the moving body will be described as an example.

The magnetic recording surface 32c of the magnetic material 32 being conveyed.
The laser beam is projected onto the magnetic recording surface 32c, and the laser beam reflected by the magnetic recording surface 32c is received. The speed sensor 52 detects the transport speed of the magnetic original 32 based on the difference between the wavelength of the projected laser light and the wavelength of the received laser light. The detected transport speed of the magnetic original 32 is input to the controller 56.

As shown in FIG. 3, the gap sensor 50 includes a head support plate 68 together with a magnetic head 66 described later.
Fixed to the gap sensor 50 and the magnetic recording surface 3
By measuring the distance d2 from 2c using laser light, the space gap d1 between the magnetic head 66 and the magnetic recording surface 32c can be known.
The space gap d1 detected by the gap sensor 50 is input to the control unit 56.

As shown in FIG. 4, the actuator 48 has a DC motor 48a, a main body 48b, and a movable portion 48c. By driving the DC motor 48a of the actuator 48, the control unit 56 can reciprocate the magnetic head group 44 in the X direction via the movable unit 48c and the head support plate 68.

The magnetic head group 44 is composed of a plurality (four in this embodiment) of magnetic heads 66, and each magnetic head 66 is connected to a movable portion 48c of an actuator 48 (see FIG. 4). It is supported by the head support plate 68. The magnetic head 66 writes predetermined recording information on the magnetic original 32 under predetermined recording write current according to an instruction from the control unit 56. In addition,
In FIG. 1, in order to avoid complexity of the drawing, two of the four magnetic heads 66 are shown, and the other two are omitted.

The ink jet printer 54 includes a control unit 5
In accordance with the print timing given by 6, the work mark for the subsequent process is printed on the magnetic recording surface 32c of the magnetic original 32.

The hardware configuration of the control unit 56 is shown in FIG. The hard disk 2 stores a program for controlling the magnetic head 66, data, and the like. The main memory 4 is loaded with programs and the like stored in the hard disk 2. The CPU 6 executes the program loaded in the main memory 4.

Data or the like for control is input via the keyboard 8. Further, a command is sent to the CPU 6 via the keyboard 8 and the mouse 10. The CRT 12 displays the control result and the like. Transfer of programs and various data to and from an external device (not shown) is performed by a flexible disk (not shown) via an FDD (flexible disk drive) 14. Recording information to be recorded on the magnetic original 32 is sequentially transmitted through a signal line (not shown) provided separately, and is temporarily held in the data latch 22.

The I / O interface 16 is connected via the A / D converter 18, the D / A converters 20, 24, etc.
Control signals and the like are exchanged between the CPU 6 and the magnetic head 66 or the like.

The operation of the magnetic recording device 40 will be described with reference to FIGS. 1 and 5. As shown in FIG.
2 is transported in the Y direction by the original transport unit 42. The CPU 6 detects the position sensor 46 and
The position data in the X direction of the one end portion 32a of the magnetic material roll 32, which is input via the D converter 18 and the I / O interface 16, is taken in.

The CPU 6 determines the end 32a and the magnetic head 66 based on the position data of the end 32a taken in the X direction.
The X-direction movement amount of the actuator 48 is calculated so that the distance between and becomes constant. The CPU 6 moves the actuator 48 in the X direction via the I / O interface 16 and the D / A converter 20 according to the calculated X direction movement amount.

As described above, by controlling the distance between the end portion 32a of the magnetic raw material 32 and the magnetic head 66 to be constant, even when the end portion 32a meanders, it is shown in FIG. As described above, the distance between the recording track 38 where the recording information is written by the magnetic head 66 and the end portion 32a can always be kept constant.

Therefore, when printing, cutting or the like is performed in the subsequent process, the recording track 38 is configured by positioning the end portion 32a in the X direction with reference to the end portion 32a.
The deviation in the X direction between the printing position and the cutting position (indicated by the one-dot chain line in FIG. 6) and the like can be suppressed to an extremely small value.

The CPU 6 takes in the space gap d1 detected by the gap sensor 50 and inputted via the A / D converter 18 and the I / O interface 16.

The CPU 6 of the write amplifier 26 corresponding to the taken-in space gap d1 according to a predetermined mathematical expression or table so that the reproduction output of the recorded information to be written by the magnetic head 66 becomes a constant value. Calculate the gain. FIG. 7 is a diagram showing the relationship between the space gap d1 and the recording / writing current of the magnetic head 66 when the reproduction output of recorded information is kept constant. The above formula or table is created based on the relationship shown in FIG. 7 and the characteristics of the write amplifier, and is stored in the hard disk 2.

The CPU 6 controls the write amplifier 2 via the I / O interface 16 according to the calculated gain.
By controlling 6, the recording / writing current of the magnetic head 66 is adjusted.

As described above, by adjusting the recording / writing current of the magnetic head 66 on the basis of the space gap d1, even if the magnetic original 32 is wavy in the Z direction, the reproduction output of the recorded information is performed. Can always be kept constant.

The CPU 6 is detected by the speed sensor 52, and the A / D converter 18 and the I / O interface 16 are detected.
The feeding speed of the magnetic original 32, which is input via the.

The CPU 6 generates a recording timing based on the taken-in transportation speed so that the magnetic recording density in the Y direction of the recording information to be written by the magnetic head 66 becomes a constant value.

The CPU 6 executes the D / A via the I / O interface 16 according to the generated recording timing.
The conversion timing of the converter 24 is controlled. That is, the recording information (digital signal) sequentially sent to the data latch 22 is converted into an analog signal according to the conversion timing of the D / A converter 24 described above, and is amplified to a predetermined recording / writing current by the write amplifier 26. It is written on the magnetic original 32 as magnetic recording information via the magnetic head 66.

As described above, by controlling the recording timing on the basis of the transport speed of the magnetic material 32, regardless of the transport speed of the magnetic material 32, the Y-direction magnetic recording of the recording information to be written is performed. The density can be kept constant.

The laser Doppler type speed sensor 5
By using 2, it is possible to directly detect the conveying speed of the magnetic material roll 32 with high accuracy and in a non-contact manner. further,
The recording timing of the magnetic head 66 can be controlled with high accuracy based on the detected highly reliable speed information. That is, the uniformity of the magnetic recording density can be further enhanced. Also, to use the Doppler effect of light,
It is not necessary to attach a mark for speed measurement to the magnetic recording surface 32c.

Further, the CPU 6 takes the magnetic original 3 taken in.
The magnetic recording surface 3 of the magnetic original 32 is based on the transport speed of 2.
The print timing is generated so that the work marks MK (see FIG. 8) to be printed on 2c are evenly spaced.

The CPU 6 controls the print timing of the ink jet printer 54 via the I / O interface 16 according to the generated print timing. That is, the print pattern given in advance to the inkjet printing device 54 is in accordance with the above print timing.
A work mark MK is written on the magnetic original 32.

In this way, by controlling the printing timing based on the transport speed of the magnetic material 32, the magnetic material 32
It is possible to keep the interval of the work marks MK to be written constant regardless of the transport speed of the. Further, as shown in FIG. 8, the CPU 6 controls such that the positional relationship in the Y direction between the work mark MK and the recording track 38 is always constant.

Therefore, when printing is performed in the subsequent process, the recording track 38 and the recording track 38 are formed by positioning the work mark MK as a reference in the Y direction.
The deviation in the Y direction from the printing position can be suppressed to an extremely small value.

When cutting or the like is performed in the subsequent process, first, the work mark MK is used as a reference for positioning in the Y direction, and the sheet is cut along the cutting line (a). Next, the cutting line (a) is used as a reference for positioning in the Y direction, and a card is punched along the cutting line (b). With this configuration, the recording track 38
Then, the deviation in the Y direction from the cutting line (b) can be suppressed to be extremely small.

By using the ink jet printing device 54, the work mark MK can be applied to the magnetic original sheet 32 in a non-contact manner. Therefore, the work mark M
When K is applied, it is not necessary to stop the conveyance of the magnetic original 32. That is, the work mark MK can be provided without causing any trouble in the operation of writing the recorded information on the magnetic original 32.

In the above embodiment, the optical position sensor 46 is used as the end position detecting means, but a mechanical, ultrasonic or pneumatic sensor may be used as the end position detecting means. it can.

Although the electric actuator 48 was used as the actuator,
Pneumatic or hydraulic actuators can also be used.

Next, FIG. 9 shows a part of the configuration of a magnetic recording apparatus 70 according to another embodiment of the present invention. The magnetic recording device 70 includes an original transport unit 42 that is a transport unit, a magnetic head group 44 that is a magnetic recording unit, a gap sensor 50 that is a space gap detection unit, a laser Doppler type speed sensor 52, an inkjet printing device 54, and control. 1 in that the unit 56 and the CPU 6 and the write amplifier 26 (see FIG. 5) that are write current adjusting means are provided.
Common to the magnetic recording device 40.

However, unlike the magnetic recording device 40 (see FIG. 1), the magnetic recording device 70 of FIG.
The actuator 48 is not provided. On the other hand, unlike the magnetic recording device 40, the magnetic recording device 70 of FIG. 9 includes one or more end regulating rollers 72 which are end position regulating means, and a raw fabric pressing portion 74 which is a raw fabric pressing means. Note that FIG.
In the control unit 56 (see FIG. 5) of the magnetic recording device 70, the input from the position sensor 46 to the A / D converter 18 and the output from the D / A converter 20 are not set.

As shown in FIG. 9, the end regulating roller 72
Is rotatably provided around a Z-direction spindle (not shown). The position of the end regulating roller 72 in the X direction can be fixed to a fixing member (not shown) after the adjustment. By fixing the position of the end portion regulation roller 72 in the X direction, it is possible to regulate the movement of one end portion 32a of the magnetic original web 32 to the negative side in the X direction.

The original fabric pressing portion 74 includes the frame body 76, the pressing roller 78, the pressing spring 80, and the frame indicating roller 8.
Two. The pressing roller 78 is rotatably provided around a Z-direction supporting shaft (not shown). The support shaft is fixed to the frame body 76. One end 80a of the pressing spring 80 is fixed to a fixing member, and the other end 80b is in contact with the frame body 76. The pressing spring 80 is configured to bias the other end 32b of the magnetic raw material 32 toward the negative side in the X direction via the frame body 76 and the pressing roller 78. The frame instruction roller 82 prevents the frame body 76 from moving in the Z direction.

Thus, the one end 3 of the magnetic original 32 is
The movement of 2a to the negative side in the X direction is regulated, and the other end portion 32b of the magnetic raw material 32 is biased toward the negative side in the X direction (see FIG. 10, biasing force F). One end 32a can be forcibly brought into contact with the end regulating roller 72.

On the other hand, as shown in FIG. 10, each magnetic head 66 is supported by a head support plate 68, but unlike the magnetic recording device 40 of FIG. 1, the head support plate 68 is fixed to a fixing member. There is.

As described above, one end 3 of the magnetic original 32 is
By forcing 2a into contact with the end regulating roller 72 and fixing each magnetic head 66, even when the end 32a meanders, as shown in FIG. The distance between the recording track 38 where the recording information is written by 66 and the end portion 32a can always be kept constant.

Therefore, as in the case of the magnetic recording device 40 of FIG. 1, when printing or cutting is performed in the subsequent process, the recording track 38 and the recording track 38 are configured by positioning the end portion 32a in the X direction. The deviation in the X direction from the printing position, the cutting position (shown by the one-dot chain line in FIG. 10), etc. can be suppressed to an extremely small value.

Although the end position regulating roller 72 is used as the end position regulating means in the above embodiment, a wall surface or the like for regulating the end position may be used as the end position regulating means. The wall surface may be fixed, or may be a member that moves in the Y direction together with the magnetic material sheet 32 like a belt conveyor.

The frame body 7 is used as the original fabric pressing means.
6, the original fabric pressing portion 74 including the pressing roller 78, the pressing spring 80 and the frame supporting roller 82 is used, but the original fabric pressing means is not limited to this.

Next, FIG. 11 shows a part of the configuration of a magnetic recording device 90 according to still another embodiment of the present invention.
The magnetic recording device 90 shown in FIG. 11 is common to the magnetic recording device 90 of FIG. 9 in that the head support plate 68 on which the magnetic head 66 is arranged is fixed to a fixing member.

However, unlike the magnetic recording device 70 (see FIG. 9), the magnetic recording device 90 of FIG. 11 does not include the end regulating roller 72 and the original pressing portion 74. On the other hand, FIG.
Unlike the magnetic recording device 70, the magnetic recording device 90 is provided with a slitter 92 which is a reference end forming means.

The slitter 92 includes a slitter blade 94 for cutting off one end portion 32a and the other end portion 32b of the magnetic raw material 32 in parallel with the conveying direction, and a winding portion near the cut-off end portion 32a and the end portion 32b. The ear winding unit 96 is provided. Slitter blade 94, selvedge winding unit 96
Are fixed to the fixing member.

As shown in FIG. 12, as the magnetic raw material 32 is conveyed, the vicinity of the end portions 32a and 32b of the magnetic raw material 32 is cut off by the slitter blade 94. By cutting off the vicinity of the end portion 32a, the magnetic original 3
A linear portion formed in 2 and parallel to the transport direction is referred to as a reference end portion 98.

As described above, the reference end portion 98 is formed by cutting off at least one end portion 32a of the magnetic raw material 32 in parallel with the conveying direction, and the magnetic head 66 is fixed to the slitter 92. Even if the end portion 32a meanders, as shown in FIG. 12, the distance between the recording track 38 where the recording information is written by the magnetic head 66 and the reference end portion 98 is always kept constant. You can

Therefore, when printing, cutting or the like is performed in the subsequent process, the recording track 3 is configured by performing the positioning in the X direction with the reference end portion 98 as a reference.
8 and the printing position, the cutting position (indicated by a chain line in FIG. 12) and the like in the X direction can be suppressed to an extremely small value.

In the above embodiment, the slitter blade 94 and the selvage take-up portion 9 are used as the reference end portion forming means.
Although the slitter 92 provided with 6 is used, an electric blade, a laser cutting machine, or the like may be used as the reference end forming means.

The above-described magnetic recording device 70 of FIG. 9 and FIG.
In the magnetic recording device 90 of No. 1, the magnetic head 66 is fixed to the fixing member.
In the magnetic recording device 90, as in the magnetic recording device 40 of FIG. 1, the position sensor 46 is provided to detect the end portion 32a or the reference end portion 98 of the magnetic original 32, and the actuator 48 is operated based on the detection output. The magnetic head 66 may be configured to move in the X direction. With this structure, the recording track 38 can be positioned with respect to the end portion 32a or the reference end portion 98 with higher accuracy.

In each of the above-mentioned embodiments, as the conveying means, the fixing member, the original winding motor, the winding roller 60,
Although the raw fabric transporting section 42 including the feeding roller 62 and the supporting roller 64 has been described as an example, the transporting means is not limited to this. The transport speed is not particularly limited, but 1 to 200 m / min is preferable.

In each of the above embodiments, four magnetic heads 66 are arranged, but the number of magnetic heads 66 is not particularly limited. In addition, the magnetic head 66
Is not particularly limited as long as it is an electromagnetic conversion element in which a residual magnetic flux capable of obtaining a desired reproduction output can be written, but in each of the above-described embodiments, an electromagnet having a narrow gap of a ring core of a soft magnetic material is used. ing. If necessary, a cooling device for preventing heating of the magnetic head can be combined.

The recording frequency when the recording information is written on the magnetic original sheet 32 by using the magnetic head 66 is as follows.
It can be applied in the range of 0.01 to 10,000 KHz. The recording current in this case can be in the range of several mA to several A. The recording density on the magnetic original 32 is preferably 10 to 1000 BPI.

The space gap, which is the distance between the magnetic head 66 and the magnetic film 32, is not particularly limited, but is non-contact in order to prevent the magnetic head 66 from being worn due to contact with the magnetic film 32. It is preferable that when the relationship with the above-mentioned recording / writing current is taken into consideration, 100
μm or less is preferred.

In each of the above embodiments, the magnetic original 32
The width of the upper recording track 38 is set to 1 to 10 mm, preferably 2 to 7 mm. The accuracy of the track is ± 0.05mm
It is possible to control to a certain degree. Recording track 38
If the width is too narrow, it will be difficult to increase the accuracy with the mass writing method, and if it is too wide, the playback equipment for using this card will be large and it will not be suitable for magnetic cards such as prepaid cards. .

In each of the above-mentioned embodiments, the gap sensor 50 utilizing laser light is used as the space gap detecting means, but as the space gap detecting means,
An ultrasonic sensor or the like can also be used.

A laser Doppler type speed sensor 52 was used as a speed sensor for detecting the conveying speed of the magnetic material 32, but the rotation speed of the support roller 64 or the like is detected by a rotary encoder or the like to rotate the support roller 64 or the like. It may be configured to calculate the transport speed of the magnetic original sheet 32 based on the speed.

Although the ink jet printing device 54 and the control unit 56 are used as the mark applying means, the mark can be provided on either the front or back side of the magnetic original 32 as required. Further, a laser generator may be used instead of the ink jet printing device 54, and a laser punch hole may be formed at a predetermined position of the magnetic raw material 32.

In the above embodiment, the CPU
Although a case has been described as an example where each function of the control unit 56 shown in FIG. 1 is realized by using FIG. 6, a part or all of each function may be realized by hardware logic.

Further, although the roll-shaped magnetic raw material 32 has been described as an example of the magnetic raw material, the magnetic raw material may be a sheet-shaped one and the form is not particularly limited.

In each of the above embodiments, the magnetic original 32
Is a magnetic powder, a binder, and a trace amount additive mixed with a solvent and applied on a support.

The support used for the magnetic raw material 32 is, for example, a sheet film such as a polyester film, a vinyl chloride film, a polyethylene film, a polypropylene film, a polyethylene film synthetic paper, a wood pulp paper or a laminated paper having a thickness of 10 to 1000 μm. A non-magnetic material can be applied. In particular, a prepaid card using a polyester film having a thickness of 150 to 300 μm as a support is preferable because the physical strength of the support is suitable for magnetic card applications.

As a magnetic material used for the magnetic material sheet 32,
Various known ferromagnetic materials that are effective as magnet materials can be used. For example, Fe, Ni, Co, Mn, Cr, O and alloys or compounds containing these as main components are melted,
Alternatively, various magnetic materials obtained by sintering or the like can be used. Specifically, iron, magnetite, γ-ferrite, cobalt-doped γ ferrite, strontium ferrite, barium ferrite, chrome steel, cobalt steel, MK steel, KS steel, chromium dioxide, cobalt iron, metal iron, sendust alloy It is possible to use powders of a single substance or a mixture of permalloy alloy, iron amorphous alloy, etc., flakes, sheets, etc.

The method for forming the magnetic layer is not particularly limited, and the magnetic layer can be formed according to the well-known conventional techniques. For example, coating type molding, fusion molding,
Although methods such as vapor deposition and sputtering are used, the coating type is preferable because it is suitable for controlling the thickness of the magnetic layer, the selectivity of the support, and suitable for mass production.

When the magnetic layer is provided in the coating method, the magnetic material used for preparing the coating liquid is a coercive force of 50.
00 Oe, preferably magnetic powder having an average grain size of 0.01 to 100 microns, for example, _{γ-Fe 2 O 3, BaO} -6Fe
₂ O ₃ , Sendust alloy powder, and iron amorphous alloy powder are preferable.

The coating liquid is a magnetic powder, a wetting agent, an antistatic agent, a plasticizer, using water, an organic solvent or the like as a dispersion medium and a stirrer / pulverizer such as a ball mill or a sand mill attritor.
It is prepared by dispersing a lubricant, an abrasive, a dispersant, a binder and the like together or separately. In such a coating liquid, starch, cellulose derivative,
Casein, polyvinyl alcohol, styrene / maleic anhydride copolymer emulsion, styrene / butadiene copolymer emulsion, urethane resin, acrylic resin,
Polyester resin, epoxy resin, vinyl chloride vinyl acetate copolymer resin, alkyd resin, polyvinyl butyral resin, vinyl chloride resin, vinyl chloride vinyl acetate vinyl alcohol copolymer resin, etc. are 5 to 60% by weight of the total solid content, preferably About 10 to 50% by weight is blended.

The method for forming the coating layer is not particularly limited, and a conventionally known and commonly used technique can be used. For example, as a method of applying the coating liquid for the magnetic layer onto the support, an appropriate coating device such as an air knife coater, a blade coater, a gravure coater, a curtain coater, a die coater, a reverse roll coater, or the like is used.

The coating amount of the coating liquid is not particularly limited as long as the coating layer can obtain sufficient magnetic energy to suit the intended use. Generally 1 to dry weight
It is adjusted in the range of 100 g / m ² . Further, the coating layer may be formed of at least one layer by combining various magnetic materials so as to suit the intended use.

The thickness of the magnetic layer is not particularly limited, but is 0.3 to 500 μm, preferably 1 to 100 μm.
It is.

The magnetic recording device 40, the magnetic recording device 70, or the magnetic recording device 90 described above is used to further apply magnetic coating, protective layer coating, or heat-sensitive layer coating to the magnetic raw material 32 on which recording information is written. Engineering, printing, punching, anti-counterfeiting, etc. can be added. Further, magnetic processing may be further performed after processing into a card shape. By adding such steps, the function as a magnetic card can be diversified.

In addition, even in each of the states in which the magnetic coating, the protective layer coating, the heat-sensitive layer coating, the printing, the anti-counterfeiting processing and the like are performed as described above, as long as they are in the form of continuous strips,
Recording can also be performed with the magnetic recording device of the present invention as a magnetic material.

In each of the above-described embodiments, the magnetic recording device for manufacturing the prepaid card has been described as an example, but the present invention is not limited to this and is used after cutting after magnetic recording. The present invention is generally applied to a magnetic recording device for recording information on a magnetic material.

[Brief description of the drawings]

FIG. 1 is a magnetic recording device 4 according to an embodiment of the present invention.
0 is a drawing showing the overall configuration of the system.

FIG. 2 is a drawing showing a configuration of a position sensor used in a magnetic recording device 40.

FIG. 3 is a diagram showing a configuration of a gap sensor used in the magnetic recording device 40.

FIG. 4 is a diagram showing a configuration of an actuator used in the magnetic recording device 40.

5 is a diagram showing a hardware configuration of a control unit used in the magnetic recording device 40. FIG.

FIG. 6 is a diagram for explaining the operation of the magnetic recording device 40.

FIG. 7 is a diagram showing a relationship between a gap space and a recording / writing current in the magnetic recording device 40.

FIG. 8 is a diagram for explaining the operation of the magnetic recording device 40.

FIG. 9 is a diagram showing a part of the configuration of a magnetic recording device 70 according to another embodiment of the present invention.

10 is a drawing for explaining the operation of the magnetic recording device 70. FIG.

FIG. 11 is a drawing showing a part of the configuration of a magnetic recording device 90 according to still another embodiment of the present invention.

FIG. 12 is a drawing for explaining the operation of the magnetic recording device 90.

FIG. 13 is a diagram showing a magnetic recording device.

[Explanation of symbols]

 32 ... Magnetic material 52 ... Speed sensor 56 ... Control unit 66 ... Magnetic head

Claims (4)

[Claims] 1. A transporting means for transporting a magnetic material, a magnetic head for magnetically recording predetermined information during transportation on one or more recording tracks on the magnetic material set parallel to a transport direction, In a magnetic recording device provided with one or more magnetic recording means corresponding to the recording tracks to be formed, the magnetic recording density in the direction of the recording tracks on the magnetic material is constant regardless of the transport speed of the magnetic material. A magnetic recording device characterized in that 2. The magnetic recording apparatus according to claim 1, wherein a recording speed of the magnetic head is controlled based on a speed sensor for detecting a conveyance speed of the magnetic material, and a conveyance speed of the magnetic material detected by the speed sensor. A recording timing control means is provided. 3. A transporting means for transporting a magnetic material, a magnetic head for magnetically recording predetermined information during transportation on one or more recording tracks on the magnetic material which are set in parallel with a transport direction. In a magnetic recording device including one or more magnetic recording means corresponding to a recording track to be formed, a mark for giving a work mark for a post process to a magnetic material sheet in synchronization with recording timing of a magnetic head A magnetic recording apparatus comprising: an applying unit. 4. The magnetic recording apparatus according to claim 3, wherein an ink jet printing device is provided as the mark applying means.