JPH087524Y2 - Cleaning tape for magnetic head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a magnetic head cleaning tape, and more specifically, it provides a plurality of magnetic head cleaning portions at appropriate intervals for cleaning. The present invention relates to a cleaning tape for a magnetic head, which reduces wear of the magnetic head.

[Conventional technology]

As a cleaning tape for a magnetic head, there is provided a plastic tape coated with a metal abrasive such as chromium dioxide or alumina with a binder or the like. However, these metal abrasives may wear the magnetic head after long-term use. In addition, since chromium dioxide is sensitive to magnetism, it may be magnetized by the magnetic head during cleaning, or it may be magnetized simply by placing it in a place with strong magnetism. May be magnetized. In addition, the metal abrasive may peel off from the tape and be magnetically attracted to the magnetic head side. Further, when the magnetic head is extremely dirty, an alcohol-based cleaning liquid is used to remove the dirt. When the cleaning tape is impregnated with such a cleaning liquid, the binder coating the abrasive is dissolved and the abrasive is removed. Has the drawback of peeling off.

Therefore, the applicant of the present application has proposed a cleaning tape in Japanese Patent Publication No. 63-50770, in which fine asperities are formed on a plastic tape and the magnetic head is cleaned by the asperities. This cleaning tape is one in which fine particles such as alumina and glass beads are blown from a nozzle onto a plastic tape by compressed air to form fine irregularities on the tape surface, and the irregularities clean the surface of the magnetic head. This cleaning tape does not have the metal abrasive as described above, so that the magnetization of the cleaning tape can be prevented and an alcohol-based cleaning liquid can be used.

[Problems to be solved by the device]

However, since the cleaning tape of JP-B-63-50770 has unevenness formed over the entire surface in the longitudinal direction, it is highly effective in removing dirt on the magnetic head, but the surface of the magnetic head is constantly rubbed while the tape is running. Therefore, if the cleaning tape is used by mistake for a long time, the magnetic head may be worn out quickly. Particularly, in an auto-reverse tape recorder or a video player which has been widely used recently, it is necessary to pay special attention because it automatically reverses and continuously runs.

In this regard, for example, Japanese Utility Model Laid-Open No. 60-56911 proposes a cleaning tape in which magnetic head cleaning portions and recording portions on which predetermined signals are recorded are alternately arranged. Further, Japanese Utility Model Laid-Open No. 60-194712 proposes a cleaning tape in which light-transmitting portions and light-transmitting polishing portions are alternately arranged in the tape running direction.

According to these prior art examples, since the cleaning portion intermittently contacts the magnetic head, the risk of excessive polishing of the magnetic head is reduced, but the cleaning portion is still exposed to a metal abrasive such as alumina or silicon carbide. Since it contains, there is a problem that the abrasive material peels off. In addition, since the edge of the cleaning portion is formed so as to be orthogonal to the tape running direction, when moving from the non-cleaning portion to the cleaning portion, the edge portion of the magnetic head may be shocked at the corner portion of the magnetic head. As a result, there is also a problem that the corners of the magnetic head are worn.

The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to make it possible to effectively clean a magnetic head while minimizing wear of the magnetic head that occurs during tape running. It is to provide a cleaning tape for a magnetic head.

[Means for solving the problem]

In order to achieve the above object, the present invention comprises a non-magnetic plastic tape made of polyester or the like, and a non-cleaning portion and a cleaning portion are alternately provided on the magnetic head contact surface side of the tape along the longitudinal direction thereof. In the cleaning tape for a magnetic head, the non-cleaning portion is the bare surface of the non-magnetic plastic tape, and the cleaning portion is formed by fine irregularities formed by plastically deforming the surface of the non-magnetic plastic tape. And the edge portion of the cleaning portion is formed obliquely with respect to the tape running direction.

〔Example〕

An embodiment of the present invention shown in the drawings will be described below. The cleaning tape 1 is made of a non-magnetic plastic film such as a polyester film having a thickness of 25 to 38 μm. On one surface of the cleaning tape 1, a plurality of cleaning portions 2 having a predetermined width in the longitudinal direction and a plurality of non-cleaning portions 3 are alternately arranged. The cleaning portion 2 is formed with a large number of fine irregularities as described in JP-B-63-50770, and the non-cleaning portion 3 is a flat surface without such irregularities. . The cleaning portion 2 is formed so as to be inclined from one end edge in the longitudinal direction of the cleaning tape 1 toward the other end edge.

The cleaning tape 1 as described above is manufactured, for example, as follows. First, a non-magnetic plastic film having a width several times or several tens times wider than the width of the cleaning tape 1 is prepared. On the other hand, prepare a pattern plate that is approximately the same as or larger than this plastic film. This pattern plate is provided with diagonally striped shield portions at a predetermined interval from the upper end to the lower end, and the width of each shield portion is substantially equal to the width of the cleaning portion 2, and this spacing is the non-cleaning portion 3. The width is approximately equal to the width of. This pattern plate is placed on a plastic film and a water-soluble paint is applied. That is, the portion corresponding to the non-cleaning portion 3 is masked on the plastic film by this paint. The masked plastic film is blown with compressed air by a lump of fine particles composed of alumina, glass beads, silica sand or a mixture thereof as described in JP-B-63-50770. As a result, the unmasked portion is plastically deformed by the lumps of fine particles blown together with the compressed air, and a wavy cleaning surface having fine irregularities is formed. On the other hand, since the masked portion is protected by the paint, fine irregularities are not formed. Next, the paint is washed off with water or the like and dried, and then this plastic film may be cut into a desired tape width. It should be noted that, depending on the hardness of the masking paint when it is dried, in the case of a paint with a low hardness, fine particle lumps may be sprayed onto the paint part and penetrate the paint part to form slight irregularities on the film. However, since the unevenness of this portion is weak even if formed, it is not as strong as the cleaning portion 2, and the cleaning effect is not so great.

Therefore, the cleaning unit 2 and the non-cleaning unit 3 alternately contact the magnetic head to be cleaned,
Contamination can be reliably removed, and the contact area of the cleaning unit 2 in one cleaning cycle is shorter than that of the conventional cleaning tape, so that the degree of wear can be reduced even after long-term use. Also,
Since the edge portion of the cleaning portion 2 of the cleaning tape 1 which is orthogonal to the tape running direction is formed obliquely, it comes into contact with the surface of the magnetic head from the lower end portion or the upper end portion thereof, so that the cleaning portion 2 The end edges can prevent unnecessary wear of the corners of the magnetic head surface.

[Effect of device]

As described above, the cleaning tape of the present invention is provided with a plurality of cleaning portions having a large number of fine irregularities formed by plastic deformation on the surface thereof and having a predetermined width in the longitudinal direction. It is possible to surely clean and apply an alcohol-based cleaning liquid, and the contact area of the cleaning portion in one cleaning cycle is shorter than that of the conventional cleaning tape, so even if it is used for a long period of time. The degree of wear can be reduced. Further, since the edge portion of the cleaning portion is formed obliquely with respect to the tape traveling direction, the corner portion of the magnetic head is not unnecessarily worn.

[Brief description of drawings]

The drawing is a plan view showing a part of an embodiment of the present invention. In the drawings, 1 is a cleaning tape, 2 is a cleaning part, and 3 is a non-cleaning part.

Claims (1)

[Scope of utility model registration request] 1. A magnetic head cleaning tape comprising a non-magnetic plastic tape, wherein a non-cleaning portion and a cleaning portion are alternately provided on the magnetic head contact surface side of the tape along the longitudinal direction thereof. The cleaning portion is the bottom surface of the non-magnetic plastic tape, and the cleaning portion is formed by fine irregularities formed by plastically deforming the surface of the non-magnetic plastic tape, and the end of the cleaning portion is formed. A cleaning tape for a magnetic head, wherein an edge portion is formed obliquely with respect to a tape traveling direction.