JPS6029919A - Method for adjusting position of magnetic head - Google Patents

Abstract

PURPOSE:To adjust the position of a magnetic head with high efficiency by driving a magnetic recording medium through a record head and then a reproduction head together with application of recording signals to both heads respectively and then developing the images on the recording medium produced by both heads. CONSTITUTION:The recording signal for test, for example, is supplied to a record head 1 and at the same time a DC power supply 5 such as a dry cell, etc. is connected to a reproduction head 2 for supply of power. Under such conditions, a recording medium 3 is driven toward an arrow head to form images produced by both heads 1 and 2 on a recording surface. Then the medium 3 is dipped into a nonvolatile liquid containing the magnetic iron powder to develop each latent recorded image. The relative positions of both heads 1 and 2 can be simply recognized from the visible images TW and RW recorded on the medium 3. Thus it is possible to decide whether or not both heads are set at correct positions respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION (al) Technical Field of the Invention The present invention relates to a method for adjusting the position of a magnetic head, and more particularly, a method for adjusting the relative position of a recording magnetic head and a reproducing magnetic head that are installed adjacent to each other. It is related to.

(bl Prior Art and Problems) As a ticket issuing machine for train tickets, commuter passes, pari-mutuel betting tickets, etc., machines are known that print and magnetically record the required information on a recording medium that serves as the ticket, etc. Many of these magnetic recording devices have a recording magnetic head (hereinafter referred to as a recording head) and a reproducing magnetic head (hereinafter referred to as a reproduction head) installed adjacent to each other on a substrate. The relative positional relationship between both magnetic heads greatly affects the quality. Conventionally, the head positioning method involves mechanically setting the recording head and reproducing head on the substrate at predetermined dimensions from the reference plane, and then actually recording. When a recording/reproducing operation is performed on a medium, and an error occurs in the reproduced output, it is determined that both heads are in a positional error, and thereafter the positions of both heads are repeatedly fine-tuned manually.

However, in this conventional method, the amount of positive G (li) positional deviation of both heads cannot be visually observed. Therefore, the above-mentioned fine δBl adjustment work has to be repeated many times, which reduces the work efficiency. However, it lacked reliability as it was unclear whether it was absolute or not.

(C1 Purpose of the Invention This invention makes it possible to adjust the relative position of the recording head and the reproducing head while visually recognizing the amount of positional deviation between the two heads in the above-mentioned situation, thereby making it possible to perform adjustment work. The purpose of this invention is to provide a new magnetic head position adjustment method that is efficient and enables highly reliable positioning.

1dl Structure of the Invention The method for adjusting the magnetic belly button F position rfl of the present invention which achieves the above object is to pass a magnetic recording medium through the recording head and the reproducing head in this order while applying a recording signal to each of the recording head and the reproducing head. After that, the recorded images by the recording head and the regenerative head on the magnetic recording medium are developed, and the relative positions of the two heads are adjusted based on the visualized recorded image on the magnetic recording medium. This is a characteristic feature.

111) Embodiment of the Invention An embodiment of the invention will be described in detail below with reference to the drawings.

FIG. 1 is a diagram showing the arrangement relationship between the recording head and the reproducing head of a magnetic recording device to which such an embodiment is applied, in which the recording head 1 and the reproducing head 2 are placed adjacent to each other on the substrate with the surface in contact with the recording medium 3 facing upward. Both heads are spaced apart by dimensions A and B (A=B or A≠B) with reference to the running guide 4 on one side of the recording medium 3.

The positioning of both heads 1 and 2 is performed as follows. That is, first, the respective dimensions A and B' are determined mechanically and the recording bed 1 and the reproducing head 2 are installed as in the conventional method. Next, for example, a test recording signal is supplied to the recording head 1, and a DC power source 5 such as a dry battery is connected to the reproduction throat 2 to supply power. In this signal supply state, the recording medium 3 is run in the direction of the arrow, and a recorded image by the recording head 1 and a recorded image by the reproducing head 2 are sequentially formed on the recording surface thereof. Thereafter, the recording medium 3 is immersed in a volatile liquid in which magnetic iron 15) is suspended, and the latent recording images are developed. As a result, visual recorded images IW and IR due to adhesion of magnetic iron powder as shown in FIG. 2 appear on the recording surface of the cover recording medium 3. Specifically, the recorded image l- by the recording head 1 appears as a cotton-like pattern based on the logical value "IJ, rOJ signal," and the recorded image IR by the reproducing head 2 appears as a linear pattern obtained by erasing the striped pattern. Therefore, from the visualized recorded images IN and 4 on the recording medium 3, the relative positional relationship between the recording head 1 and the playback)/gutter 2 can be easily recognized, and whether the above settings are correct or not is correct. If there is a positional error, you can accurately know the amount of deviation, so you can change the position of either recording gutter 1 or playback gutter 2 by the size according to the positional deviation amount. Fine adjustment. In this case, the position fine adjustment can be completed in about one time.

In the above embodiments, the relative positioning of the recording head, the reproducing head, and the reproducing head on a plane has been described, but it goes without saying that the present invention is not limited to this, and can also be applied to so-called height positioning of both heads on a vertical plane.

if) Effects of the Invention As is clear from the above explanation, according to the magnetic head position adjustment method of the present invention, relative positioning of a recording head and a reproducing head installed adjacent to each other can be easily performed, and high positioning accuracy can be obtained. Therefore, it is extremely useful when applied to magnetic recording devices such as ticket issuing machines.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a diagram showing the arrangement relationship between a recording head and a reproducing head of a magnetic recording device to which an embodiment of the present invention is applied, and FIG. 2 is a diagram showing a recording head for explaining the present invention in detail. FIG. 3 is a diagram showing a recording state of a medium.

Claims (2)

[Claims] (1) A method of adjusting the relative positions of a recording magnetic head and a reproducing magnetic head installed adjacent to each other on a substrate, the method comprising transmitting a recording signal to the recording magnetic head and the reproducing magnetic head, respectively. The magnetic recording medium is run past the recording magnetic head and the reproducing magnetic head in this order with a 1:11 addition of . A method for adjusting the position of a magnetic head, characterized in that the relative position of the two magnetic heads is adjusted using a visualized recorded image on a magnetic recording medium. (2) The magnetic head position ir9: IM adjustment method according to claim 1, wherein the recording signal appearing on the recording magnetic head is output from a DC power source.