JPS62217470A - Drive control system for magnetic head - Google Patents

Abstract

PURPOSE:To reduce vibrations when a magnetic head keeps contact with a medium and to improve write accuracy by driving a magnetic head at a low speed almost where the magnetic head contacts the magnetic head, and then controlling the magnetic head running speed in plural stages so that the head is driven at a high speed. CONSTITUTION:The magnetic head 3 is held rotatably on a retraction arm 4, which is held rotatably on a carrier base 5, thereby pressing the magnetic head 3 against the magnetic tape 2 by a spring 6. The carrier base 5 is provided with a sensor shield plate 8 which is sensed by a sensor 7, and consequently the run position of the carrier base 5 is recognized. When a bankbook 1 is set at a specific position, the carrier base 5 is driven at the low speed the running speed of the magnetic head 3 is set to a high speed which is a magnetic code read/write speed after the magnetic head runs by specific distance after the sensor shield plate 8 is not sensed by the sensor 7 any more.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic head drive control system for bank teller equipment, etc., and in particular, the present invention relates to a magnetic head drive control system for bank teller equipment, etc., and in particular, the magnetic head, which was initially placed at a position away from the medium, is moved toward the medium during operation. The present invention relates to a magnetic head drive control system having a contact configuration.

[Conventional technology]

Conventional devices, for example, as disclosed in Japanese Unexamined Patent Publication No. 59-101382, take into consideration multi-step speed control during suction of the medium, but do not take into account speed control of the magnetic head drive mechanism. It was controlled at a constant speed.

[Problem that the invention seeks to solve]

For this reason, conventional devices as described above have problems in that the vibrations generated when the magnetic head comes into contact with the medium take time to subside and lead to writing and reading errors.

The present invention has been made in view of the above circumstances, and its purpose is to solve the above-mentioned problems in conventional magnetic head drive control systems, reduce vibrations when the magnetic head contacts the medium, and An object of the present invention is to provide a magnetic head drive control system that further improves magnetization pattern writing accuracy.

[Means for solving problems]

The above object of the present invention is to provide a magnetic head having a magnetic head held by a carrier, and a mechanism that engages with a part of the carrier at one end of the operating range of the carrier and retracts the magnetic head by movement of the carrier. In the drive mechanism, the moving speed at which the magnetic head leaves the evacuation mechanism and contacts the medium is set to a speed lower than the speed at which the magnetic head contacts the medium and reads and writes magnetic codes on the medium, and the magnetic head This is achieved by a magnetic head drive control method characterized in that after contacting the medium, the speed of the magnetic head is increased to the speed at which the magnetic code is read and written.

[Effect]

The present invention relates to a magnetic head drive control mechanism that moves a magnetic head relative to a magnetic stripe.

The running speed of the magnetic head is controlled in multiple steps, such as driving at a low speed near where the magnetic head contacts the magnetic tape and then driving at a high speed thereafter.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 3 is a perspective view showing the main parts of a passbook handling device which is an embodiment of the present invention. In the figure, 1 is a bankbook, 2 is a magnetic tape pasted on the bankbook 1, and 3 is a magnetic head for writing a magnetic code on the magnetic tape 2 or reading a magnetic code written in advance. .

The magnetic head 3 is rotatably held by a retraction arm 4, and the retraction arm 4 is rotatably held by a carrier base 5, and a spring 6 causes the magnetic head 3 to be rotated. It is configured to press against the tape 2.

The carrier base 5 runs a wire rope 12 from a wire drum 3 connected to a servo motor 14 on a support rail 9 provided parallel to the read/write direction of the magnetic tape 2 (indicated by X in the figure). Powered through
It is configured to be slidable in the X direction. Further, the carrier base 5 is provided with a sensor shielding plate 8 that is sensed by a sensor 7, which will be described later.

The positional relationship between the sensor 7 and the sensor shielding plate 8 is determined by the encoder 15 attached to the rear of the servo motor 14.
Then, the control circuit 16 and the memory circuit 17 determine the running position of the carrier base 5 from the position where the sensor shielding plate 8 is no longer detected by the sensor 7 or the position where the sensor shield plate 8 is no longer detected by the sensor 7. It is structured in such a way that it can be recognized.

Further, on the support 1-rail 9 at the left end of the travel range of the carrier base 5, there is a slope 10 for retracting the magnetic head 3 from the surface of the magnetic tape 2 by engaging the retraction arm 4. It is provided.

FIGS. 4(A) and 4(B) show the carrier base 5
FIG. 2 is a side view and a front view showing detailed configurations of the surroundings, and regarding the upward traction arm 4 on the carrier base 5 and the magnetic head 3 on the retraction arm 4, in relation to the retraction operation by the slope 10,
3 and 4 indicate the case where the magnetic head 3 is placed in a non-retraction state in which it is pressed against the magnetic tape 2;
3A and 4-A respectively show cases in which the magnetic tape 2 is placed in a retraction state without being pressed against the magnetic tape 2.

The operation of this embodiment will be explained below.

FIG. 1 is a control flowchart showing the operation of this embodiment, and FIG. 2 is a diagram showing the moving speed of the magnetic head 3.

The operation will be explained below based on both figures. The processing steps in Figure 1 are indicated by their numbers, and the position of the magnetic head shown in Figure 2 is referred to as "point A" etc. .

When the terminal @l is set at a predetermined position, a command is issued to operate the carrier base 5 at a speed ① which is the escape speed of the slope 10 by reading or writing a magnetic code. Travel from point A at the above speed ■.

The process 22) detects at point B that the sensor shielding plate 8 is no longer detected by the sensor 7, and after traveling a certain distance, passing point C is detected (process 23). The speed is set to f, which is the code read/write speed (process 24).

However, since it takes time to start up, the magnetic head 3
From point D, it moves at a constant speed at the above speed I. here,
Point D is the point where the magnetic code has meaning as data (point E)
The 0 point is set so as to be closer to the front side, and the vibration generated when the magnetic head 3 contacts the passbook 1 is attenuated to the extent that it falls within the allowable range by the E point. It is set.

” 1. When passing through point E is detected (process 25), reading or writing of data is started (process 26).

Reading or writing data ends at point E.

After reading or writing data, the magnetic head 3 detects passage of point F (process 27), then enters a stop operation (process 28), and stops at point G.

After detecting a stop (process 29), reading in the reverse direction, or
This is because, in the case of returning to the home position without writing or any of the above operations, the magnetic head 3 is already in contact with the terminal.

There is no problem of vibration during contact operation as described above. For this reason,
There is no problem even if it starts at the above speed I from point G (Process 3
0).

When it is detected that the magnetic head 3 has passed point E (processing 31), the above speed I is maintained until the 5th point without reading or writing data (processing 32).
Proceed with

When it is detected that the five points have been passed (process 33), the stop operation starts (process 34) and the series of operations ends.

In the above operation, the characteristic feature is that the Slonip 10
Starting from , the running speed of the magnetic head 3 is set to a speed I lower than the reading or writing speed (speed ■) until the magnetic head 3 comes into contact with the magnetic head 1. The vibration generated when the head 3 comes into contact with the bankbook 1 is suppressed to a minimum, thereby reducing the time required to keep the vibration within an allowable range and the distance traveled by the magnetic head 3 during that time.

In the above embodiment, it is assumed that the magnetic head 3 is in contact with the bankbook 1 during the return operation from point G in FIG. If the conditions are the same as in the operation described above, it is necessary to increase the moving speed of the magnetic head 3 in stages, similar to the above-mentioned operation. This can be done in the same way as in the previous example.

It goes without saying that the object of reading and writing by the magnetic head of the present invention is not limited to the bankbook shown in the above embodiment, but may also be other types of slips.

〔Effect of the invention〕

As described above, according to the present invention, the magnetic head is driven at a low speed near the position where the magnetic head contacts the magnetic tape, and thereafter the magnetic head is driven at a high speed.
Since the magnetic head running speed is controlled in multiple stages, no matter how high the target magnetic head driving speed is, stable magnetic head moving operation can be executed, and the processing speed is excellent. This has the remarkable effect of realizing a set of magnetic head drive control forces 8 that provide stable magnetization pattern writing accuracy.

[Brief explanation of drawings]

FIG. 1 is a control flowchart showing the operation of an embodiment of the present invention, and FIG. 2 is a diagram showing the moving speed of the magnetic head.
FIG. 3 is a perspective view showing the main parts of a passbook handling device which is an embodiment of the present invention, and FIGS. 4(A) and 4(B) are a side view and a front view showing the detailed configuration around the carrier base. It is. 1: Passbook, 2: Magnetic tape, 3: Magnetic head, 4: Retraction arm, 5: Carrier base, 7: Sensor,
8: sensor shielding plate, 9: support rail, 10 nislope, 14: servo motor, 16: control circuit, 17: memory circuit, 21 to 35: processing steps.

Claims (1)

[Claims] 1. A magnetic head drive mechanism having a magnetic head held by a carrier, and a mechanism that engages with a part of the carrier at one end of the operating range of the carrier and retracts the magnetic head by movement of the carrier. The moving speed at which the head leaves the evacuation mechanism and contacts the medium is set to a speed lower than the speed at which the magnetic head contacts the medium and reads and writes magnetic codes on the medium, and after the magnetic head contacts the medium. . A magnetic head drive control method, characterized in that the speed of the magnetic head is increased to the speed at which the magnetic code is read and written.