JP2599089Y2 - Roller device against magnetic head - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head opposing roller device used in a magnetic card reader.

[0002]

2. Description of the Related Art As shown in FIG. 1, in a conventional magnetic head opposing roller apparatus, the gap line portion 3 and the axis line of the opposing roller 2 are on the same straight line, and the R of the magnetic head 1 and the opposing roller are arranged. The two Rs are fixed so as to contact each other on the same straight line. The card is inserted in a tangential direction between the R of the magnetic head and the R of the opposing roller 2.

The roller tension 5 is applied in the direction of the magnetic head 1 (in the direction of the arrow) from 300 g to 400 g. That is, the magnetic card is inserted, and is pressed against the gap line portion 3 by the roller tension 5,
The record on the magnetic card 4 is read by the gap line section 3.

[0004]

[Problem to be solved by the invention] Roller tension 5
In FIG. 1A, the amount of 300 g to 400 g is added in the direction of the magnetic head 1 (the direction of the arrow).
Fig. 2.
As shown in (b), (c) and (d), the card edge portion 6 is in contact with the gap line portion 3 and is worn.

As shown in FIG. 1 (e), in the worn magnetic head, a portion of the spacing 7 (indicated by x) is generated between the magnetic card 4 and the gap line portion 3, and this causes the spacing loss. This causes problems in signal writing, signal reading, overwrite characteristics, and the like.
Therefore, the life of the magnetic head has been shortened.

In addition, even when the cap depth is worn, as shown in FIG. 2E, the magnetic head needs to be replaced. SUMMARY OF THE INVENTION It is an object of the present invention to provide a magnetic head opposing roller device which eliminates the above-mentioned drawbacks, enables the magnetic head to be used up to the guaranteed magnetic head wear range, and extends the life of the magnetic head.

[0007]

According to the present invention, the line of the roller shaft opposed to the magnetic head is 0.05 mm to 0.1 mm in the card insertion direction more than the gap line of the magnetic head.
A magnetic head opposing roller is fixed to be 2 mm rearward, and when the magnetic card is not inserted, the magnetic head and the magnetic head opposing roller are in contact with each other. A roller device is obtained.

[0008]

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 2A shows the position of the opposing roller 2 of the present invention with respect to the gap line portion 3.
The axis line of the magnetic head opposing roller 2 is fixed 0.05 to 0.2 mm behind the gap line of the gap line section 3 of the magnetic head in the card insertion direction. The card is inserted in a tangential direction between the R of the magnetic head 1 and the R of the opposing roller 2. As shown in FIGS. 2B to 2D, the card edge portion 6 of the inserted magnetic card has a smaller area in direct contact with the gap line portion 3 as compared with the related art. Can be prevented from being directly pressed with a force of 300 g to 400 g. That is, the wear of the gap line portion 3 is shown in FIG.
(E).

[0010]

According to the present invention, the gap line portion is less likely to be worn, so that no spacing occurs and the magnetic head can be used within the guaranteed wear range. For this reason, when the position of the conventional opposing roller is compared with the position of the opposing roller of the present invention, the magnetic head can be used within the guaranteed wear range of the magnetic head, and the durability of the magnetic head is improved.

[Brief description of the drawings]

FIG. 1A is a diagram showing a positional relationship between a magnetic head opposing roller and a magnetic head in a conventional opposing roller device before a magnetic card is inserted. FIG. 1 (b),
(C), (d) and (e) are diagrams showing the positional relationship between the magnetic head opposing roller and the magnetic head after the insertion of the magnetic card in the opposing roller device shown in FIG. 1 (a).

FIG. 2A is a diagram showing a positional relationship between a magnetic head opposing roller and a magnetic head before inserting a magnetic card in the opposing roller device of the present invention. FIG. 2 (b),
FIGS. 2C, 2D and 2E are diagrams showing the positional relationship between the magnetic head opposing roller and the magnetic head after the insertion of the magnetic card in the opposing roller device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic head 2 Counter roller 3 Gap line part 4 Magnetic card 5 Roller tension 6 Card edge part 7 Spacing

Claims (1)

(57) [Scope of request for utility model registration] The line of the roller shaft opposed to the magnetic head is more distant from the gap line of the magnetic head in the card insertion direction.
The magnetic head opposing roller is configured to be fixed so as to be rearward from 0.05 mm to 0.2 mm. When the magnetic card is not inserted, it is determined that the magnetic head and the magnetic head opposing roller are in contact with each other. Characteristic roller device against magnetic head.