JP2557949Y2 - Magnetic head - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head, and more particularly to a magnetic head suitable for station equipment such as an automatic ticket gate and an automatic payment machine. 2. Description of the Related Art For example, the size of a magnetic head incorporated in an automatic ticket gate is designed to be compatible with a commuter pass which is the largest of recording media to be inserted. Therefore, in the case of an Edmonson ticket smaller than a commuter pass, a read / write process is performed using a part of the magnetic head. However, in the above-mentioned conventional magnetic head, the recording media having different sizes are read and written by a single magnetic head. However, there is a defect that the step (step) is easily generated on the rubbing surface of the magnetic head. In other words, in the case of a commuter pass, the rubbing surface of the magnetic head is in contact with the entire range, but in the case of an Edmonson ticket, it is in contact with a part of the range. It wears faster than the rubbing surface, causing a step. If the level difference is larger than a predetermined value, the commuter pass cannot contact the magnetic head uniformly, causing a reading error or a writing error. In order to prevent such inconvenience due to uneven wear of the magnetic head, the mounting position of the magnetic head is reversed so that the portion which has been in contact with the Edmonson ticket until now is not in contact with the Edmonson ticket. In order to prevent the occurrence of a step (see Japanese Utility Model Laid-Open No. 48-3).
No. 5400). However, in order to prevent the occurrence of a step difference in this proposal, it is necessary to disassemble the magnetic head part.
It is impossible for station staff to do this easily. Therefore, the present invention has been made to solve the above-mentioned problem, and an object of the present invention is to enable stable read / write processing over a long period of time even with recording media of different sizes. Another object of the present invention is to provide a simple magnetic head. In order to achieve the above object, a magnetic head according to the present invention has the largest magnetic recording medium among magnetic recording media of different sizes such as an Edmonson ticket or a commuter pass. A magnetic recording medium having a rubbing surface matched with the recording medium, wherein the magnetic recording medium smaller than the largest magnetic recording medium is in contact with a part of the rubbing surface; Is configured to be higher than the rubbing surface position of the other portion. The position of the rubbing surface of the magnetic head in contact with a small magnetic recording medium, for example, an Edmonson ticket, is formed higher than the positions of the other rubbing surfaces. In addition to the commuter pass, the Edmonson ticket is in contact with the raised sliding contact surface, and only the commuter pass is in contact with the other sliding surfaces. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a magnetic head 1 incorporated in an automatic ticket gate not shown, and FIG. 2 is a plan view of FIG. The magnetic head 1 has a space 3 in the center of the upper surface of the case 2, a first rubbing portion 4 a and a second rubbing portion 4 b on both sides thereof, and a side surface (the second side) of the case 2. The first rubbing portion 4 a side) is fixed to the mounting bracket 5. The two rubbing portions 4a and 4b are made of nickel-white, and their upper surface portions are respectively a first rubbing surface 4a 'and a second rubbing surface.
The two rubbing surfaces 4a ', 4b are formed on the rubbing surfaces 4b'.
Although not shown, a magnetic core is embedded in b '. The upper surface position of the first rubbing portion 4a is more than the upper surface position of the second rubbing portion 4b by a predetermined distance d, for example, 0.02 to 0.03.
mm higher. This predetermined distance is determined by the two sliding surfaces 4.
Even if there is a level difference between a and 4b, the commuter pass b can be read and written. The width L ₁ of the first rubbing portion 4 a is the same as that of the Edmonson ticket a which slides on one end of the mounting member 5 in the longitudinal direction.
Formed in the same direction as the width in the direction perpendicular to the conveying direction of
Width L ₂ from the mounting bracket 5 to the one end of the second rubbing portion 4b (end of the mounting member 5 opposite) is formed in the same direction of the width perpendicular to the conveyance direction of the commutation ticket b . In the magnetic head 1 according to this embodiment, the first rubbing surface 4a 'in contact with the Edmonson ticket a and the commuter pass b is formed higher in advance than the second rubbing surface 4b' in contact with only the commuter pass b. Therefore, the first rubbing surface 4a 'is
It can be in contact with more magnetic recording media. That is, even if the first rubbing surface 4a 'is lower than the second rubbing surface 4b', the magnetic head 1 can be used to the extent that the reading / writing process can be performed. The life can be at least twice as long as that of the related art. In the above-described embodiment, the two rubbing portions 4a,
4b is made of nickel silver, but if it is made of a highly wear-resistant material such as ceramics, the life can be further extended. In setting the above-mentioned predetermined distance d, it is preferable to take into account the insertion ratio of the commuter pass b to be inserted and the Edmonson ticket a. This is because the smaller the predetermined distance d, the better the reading and writing of the commuter pass b, the better. When the insertion ratio of the Edmonson coupon a is smaller than that of the commuter pass b, it is preferable to make it as small as possible. . The magnetic head according to the present invention has a rubbing surface that matches the largest magnetic recording medium among the magnetic recording media having different sizes, and has the largest size. The magnetic recording medium smaller than the magnetic recording medium was in contact with a part of the rubbing surface, and the position of the rubbing surface of the magnetic head was set higher than the position of the rubbing surface of the other part. The portion can be in contact with many magnetic recording media, and can extend the life of the magnetic head.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a magnetic head according to an embodiment of the present invention. FIG. 2 is a plan view of FIG. [Description of Signs] 1 Magnetic head 4a First rubbing portion 4b Second rubbing portion 4a 'First rubbing surface 4b' Second rubbing surface a Edmonson ticket (magnetic recording medium) b Commuter ticket (magnetic recording medium)

Claims (1)

(57) [Claims for utility model registration] Among the magnetic recording media of different sizes, such as Edmonson tickets or commuter passes, have a rubbing surface that matches the largest magnetic recording media, and the largest size In the magnetic head in which the magnetic recording medium smaller than the magnetic recording medium is in contact with a part of the rubbing surface, the position of the rubbing surface in contact with the smaller magnetic recording medium is larger than the position of the rubbing surface of the other part. A magnetic head having a high structure.