Dynamic magnetic information storage or retrieval – Head – Head accessory
Patent
1998-06-16
2000-02-22
Evans, Jefferson
Dynamic magnetic information storage or retrieval
Head
Head accessory
360134, G11B 541
Patent
active
060287519
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a cleaning device for cleaning a component in a tape path in a machine unit in which a tape passes along and engages the component, and defines the tape path. The present invention also relates to a method for cleaning a component in the tape path. In particular, the present invention relates to a cleaning device for cleaning a recorder and/or playback unit, such as, for example, a video recorder and/or playback unit, or an audio recorder and/or playback unit, however, the present invention is not limited to a cleaning device for cleaning such recorder and/or playback units. As well, the present invention relates to a method for cleaning such a recorder and/or playback unit, although, the invention is not limited to such a method. The invention further relates to a cleaning tape for cleaning a component in a tape path in a machine unit in which a tape passes along and engages the component, and defines the tape path, and for example, the invention relates to but is not limited to a cleaning tape for cleaning a component in a tape path in a recorder and/or playback unit, such as, for example, a video recorder and/or playback unit or an audio recorder and/or playback unit.
DESCRIPTION OF THE PRIOR ART
Cleaning devices for cleaning recorder and/or playback units, such as, for example, video or audio recorder and/or playback units may comprise a cassette housing within which a cleaning tape is located for cleaning at least one of the components in the tape path of the recorder and/or playback unit. The cassette housing, in general, is substantially similar in size and shape to a conventional tape cassette housing.
A typical cleaning device for a video recorder and/or playback unit is described in European Patent Specification No. EP-A-0,210,787. The cleaning device of this European Specification relies on a cleaning tape and a cleaning brush for cleaning components in a magnetic tape path along which a conventional magnetic tape is drawn into and through the video unit during playing from and/or recording onto the magnetic tape. Typical of the components which are cleaned in the magnetic tape path are the video head, the video drum within which the video head is located, guide rollers which withdraw the tape from the video cassette housing and urge it into engagement with the video drum, the capstan and pinch rollers, sound head, erase head and the like. However, one of the difficulties experienced in cleaning these components with conventional tape cleaning devices which in general only comprise a cleaning tape and do not include a cleaning brush is that the cleaning tape is of width which is substantially similar to the width of a conventional magnetic tape and, in general, is of width identical to that of a conventional magnetic video tape. Since the magnetic tape, as it is drawn over the components in the magnetic tape path, rubs the surfaces that it touches, dirt particles and other debris tend not to collect on the components in the area over which the magnetic tape passes, but rather, to each side of the area over which the magnetic tape passes, in other words, on margin areas on each side of the magnetic tape path. Thus, since the width of conventional cleaning tapes is similar to the width of a magnetic video tape, the cleaning action of conventional tape cleaning devices is limited to the area of the path of a normal magnetic video tape, and thus, the margin areas on the components on each side of a normal magnetic tape path remain untouched by the cleaning tape. Because of this any build-up of dirt and other foreign matter which may collect on the margin areas adjacent the respective sides of the magnetic tape path remain undisturbed after cleaning. By providing a cleaning brush in the cleaning device of European Patent Specification No. EP-A-0,210,787 which cleans the drum, a significant proportion of this problem is overcome. However, in the case of components which are contacted only by the cleaning tape, any build-up of dirt or other fo
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Fritsch Joseph Frederick
Fritsch Roxanne Yvonne
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