JP2000163721A - Cassette type cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an equipment such as a VTR to be used immediately by surely performing a wet wiping in the state without causing any sticking by means of the supply of an adequate cleaning liquid and also surely performing a dry wiping so that the cleaning liquid is not remained. SOLUTION: A cleaning tape 5 is divided into a wet wiping area and a dry wiping area, and plural notched holes 20 having the specific size are formed at specified intervals on the wet wiping area. Consequently, when the wet wiping is performed in the first half of the cleaning tape 5, the wet wiping is performed without causing any sticking phenomenon since the notched holes are provided on the wet wiping area, and also since the cleaning liquid stuck by the wet wiping operation is removed by performing the dry wiping at the later half, the equipment such as the VTR can be used immediately without any trouble to be unconscious of the drying time by removing this cleaning device after the equipment is cleaned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wet and cassette type head cleaner for cleaning a magnetic head in an apparatus for recording or reproducing a magnetic recording tape or an apparatus for reproducing a magnetic recording tape, that is, a cleaning apparatus. is there.

[0002]

2. Description of the Related Art The wet type here is a head cleaner of a type in which a cleaning liquid is supplied to a cleaning tape mounted in a cassette and used. The configuration disclosed in Japanese Unexamined Patent Publication No. 59-36021 and Japanese Unexamined Patent Application Publication No. 59-90224 are known.

In the device disclosed in the above-mentioned publication, a cleaning liquid application roller having a liquid supply surface on which an absorber is exposed and a smooth non-liquid supply surface is arranged in a path along which a cleaning tape runs in a cassette shell. The cleaning tape running in contact with the application roller is provided with a portion where the cleaning liquid is applied from the absorber and a portion where the cleaning liquid is not applied, that is, a wet portion and a dry portion are formed intermittently. Things.

[0004] Further, the invention disclosed in the above publication is also
A cleaning liquid supply source (coating roller) is provided in a path along which the cleaning tape travels in the cassette shell. The coating roller is mostly a smooth surface, and a part of the coating roller is provided with a protruding portion of the absorber. The wet portion and the dry portion are formed intermittently with respect to the cleaning tape by the protruding portion and the smooth surface that is not so.

[0005] In any of the conventional examples, the rotary head drum to be cleaned is cleaned or cleaned by intermittent repetition of wet wiping and empty wiping from the beginning to the end.

[0006]

In these prior arts, a cleaning liquid impregnated in an absorber is applied intermittently to a cleaning tape by rotation of an application roller. Therefore, the rotation of the application roller and the running of the cleaning tape are not synchronized, or the cleaning liquid does not always come out uniformly from the absorber, and in many cases, a large amount of cleaning liquid is applied only at the beginning of application. Therefore, there is a problem that uniform intermittent coating cannot be performed and scheduled cleaning cannot be performed.

In order to avoid uneven intermittent application,
When cleaning is performed by supplying excess cleaning liquid and increasing the amount of application to the cleaning tape,
There is a problem that the adhesiveness of the cleaning tape to the rotating head drum is increased, and the cleaning tape is stuck and hinders the running of the cleaning tape.

In any of the conventional examples, cleaning is performed with a so-called wet cleaning tape. Immediately after the cleaning, the cleaning liquid still remains on the rotary head drum, the guide pins and the like. In many cases, if the tape for recording / reproduction is run immediately after cleaning, the tape for recording / reproduction sticks to the rotating head drum and causes malfunction, and in the worst case, a device such as VTR or recording / reproduction Since the tape is damaged, the apparatus cannot be used until the cleaning liquid dries, and there is a problem that the cleaning liquid cannot be used immediately.

Therefore, the head cleaner of the conventional example is designed to supply an appropriate cleaning liquid to surely perform wet wiping without sticking, and to surely perform empty wiping so that no cleaning liquid remains. There is a problem that must be solved in order to be able to use the device immediately.

[0010]

As specific means for solving the problems of the prior art, the present invention relates to a rotatable reel hub on which a cleaning tape is wound, and a cleaning liquid applying means provided on a traveling path of the cleaning tape. Wherein the cleaning tape is divided into a wet wiping area and an empty wiping area, and a plurality of notch holes of a predetermined size are formed at predetermined intervals in the wet wiping area. The cleaning device and the cleaning liquid application unit are formed in a hollow cylindrical shape having a bottom and an opening at an upper part, and a rotating shaft having a window hole in a peripheral wall surface, and a roll shape attached to the peripheral wall surface of the rotating shaft. The rotating shaft is loosely fitted in a bearing hole provided in the upper shell, and the upper opening is provided with the cleaning liquid absorber. There is provided a cassette type cleaning apparatus characterized in that the bore.

Further, in the cassette type cleaning apparatus of the present invention, the wet wiping area is provided on the starting end side in the running direction of the cleaning tape, and a flange is formed on the peripheral wall near the upper and lower ends of the rotating shaft. And that a plurality of projections for reducing friction are formed on the flange portion as an additional requirement.

In the cassette type cleaning apparatus according to the present invention, the cleaning tape is divided into a wet wiping area and an empty wiping area, and a plurality of cutout holes having a predetermined size are formed at predetermined intervals in the wet wiping area. The wet wiping action is performed in the first half of the tape, and the cleaning liquid adhering to the wet wiping action is removed in the second half by empty wiping. Therefore, there is no problem even if a device such as a VTR is used immediately after cleaning. There is no.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the illustrated embodiments. As shown in FIG. 1, the cassette-type cleaning device 1 generally includes an upper shell 2, a lower shell 3 and a lid 4, and a pair of reel hubs around which a cleaning tape 5 is wound. The reel 6 and the take-up reel 7 are incorporated in a rotatable state. The reel 6 and the take-up reel 7 have a so-called cleaning cassette shape, and the cleaning tape 5 is provided at a predetermined position between both reel hubs, that is, near the supply reel 6 side. The cleaning liquid supply hole 8 is provided at a position where the cleaning liquid supply hole 8 passes.

The upper shell 2 has a window 2a partially formed of a transparent material.
The state of the cleaning tape 5, the supply reel 6 of the reel hub, and the take-up reel 7 incorporated therein can be visually checked.

As shown in FIG. 2, the supply reel 6 and the take-up reel 7 are incorporated in the lower shell 3, and the cleaning tape 5 is connected to the supply reel 6 via a plurality of guide pins 9. From the supply reel 6 to the take-up reel 7 side.
Immediately after being pulled out from the cleaning liquid application means 10
It comes in contact with and travels.

The cleaning liquid application means 10 is configured so as to face the cleaning liquid supply hole 8 or a part thereof serves as the cleaning liquid supply hole. And a cleaning liquid absorber 12 attached to the shaft.

As shown in FIGS. 3 and 4, the structure of an example of the cleaning liquid applying means 10 is such that the rotating shaft 11 is hollow and has a bottomed cylindrical shape with an open top, and the upper opening is cleaned. A liquid supply hole 8 and a closed bottom 1 at the bottom
The shaft portion 14 is formed so as to protrude outside the central portion of 3.

Further, the cylindrical rotating shaft 11 has a plurality of window holes 15 formed in the peripheral wall surface thereof, and flange portions 16 and 17 are integrally formed on the outer periphery near the upper and lower ends. The cleaning liquid absorber 12 in the form of a roll is attached between the cleaning liquid absorbers 16 and 17, and the flange portions 16 and 17 substantially regulate the position of the cleaning liquid absorber 12. Further, a plurality of hemispherical projections 16a, 17a for reducing rotation resistance due to contact with the upper shell 2 and the lower shell 3 are formed on the outer surfaces of the flange portions 16, 17, respectively.

In the cleaning liquid applying means 10 having such a structure, the rotating shaft 11 is loosely fitted into the bearing hole 18 provided in the upper shell 2 and the bearing hole 1 provided in the lower shell 3 is provided.
The cleaning tape 5 is rotatably mounted in the cleaning cassette 1, that is, the cleaning device 1 with the shaft portion 14 loosely fitted in the cleaning liquid absorber 12.
The cleaning fluid is transferred to the cleaning tape 5 from the cleaning fluid absorber 12 while the cleaning application means 10 rotates quickly due to the contact friction.

In this case, as a material used for the cleaning liquid absorber 12, a relatively hard sponge material such as foamed polyurethane having a good liquid retaining property is used, and a cleaning liquid impregnated in the sponge material is used. When transfer-adhering to the cleaning tape 5, it is configured not to excessively exude.

The cleaning tape 5 is formed of a woven cloth (fabric) or the like, and as shown in FIG. 5, extends over a predetermined length from the joint side with the take-up reel 7 side, that is, from the start end side. Notch holes are formed over a predetermined length on the side of the connection portion between the wet wiping area A in which the notch holes 20 of a predetermined size are formed at predetermined intervals and the supply reel 6 side, that is, on the terminal end side. The empty wiping area B is not provided.

In this embodiment, for example, 4 ±
This is a square cutout hole 20 having a size of 1 × 4 ± 1 mm, and the cutout holes 20 are formed at intervals of about 4 ± 1 mm. The wet wiping area A in which the notch hole 20 is formed is about half the length of the entire length of the cleaning tape 5, and the other half is provided with the notch hole. There is no empty wiping area B. As the shape of the cutout hole 20, a polygonal shape such as a triangular shape or a hexagonal shape, a circular shape, an elliptical shape, and the like can be arbitrarily adopted in addition to a square shape.

When the cassette type cleaning apparatus 1 of the present invention having such a configuration is used, for example, for cleaning a VTR, first, a predetermined amount of cleaning liquid is dropped and supplied to the cleaning liquid supply hole 8. The supplied cleaning liquid is absorbed by the cleaning liquid absorber 12 from the window hole 15 in the cylindrical rotary shaft 11 by capillary action, and the cleaning liquid absorber 12 is entirely wet.

In this case, the supply amount of the cleaning liquid is supplied so as to substantially fill the inside volume of the cylindrical rotary shaft 11, and is not allowed to be supplied excessively. In other words, the inner volume of the rotating shaft 11 is set to a volume in which a sufficient amount of the cleaning liquid can be injected to wet the wet wiping area A of the cleaning tape 5. Axis 11
The cleaning liquid supplied into the cylindrical body is temporarily stored in the cylindrical body, and then is substantially uniformly absorbed by the cleaning liquid absorber 12 from the window hole 15 by a capillary phenomenon, so that a suitable wet state is obtained. (See FIG. 4).

When the cleaning device 1 is mounted on a VTR and driven in the same manner as a recording / reproducing tape cassette, as shown in FIG. 6, the rotary drum head 30 and the guide pins provided on the VTR are provided. 31, 32
The cleaning tape 5 runs when it comes into contact with the like.

In the running of the cleaning tape 5, immediately after the cleaning tape 5 is pulled out from the supply reel 6, the cleaning tape 5 comes into contact with the cleaning liquid applying means 10 so that the cleaning liquid is transferred from the cleaning liquid absorber 12 and becomes wet. A portion of the wiping area A except for the notch hole 20 is entirely wet, and the wet wiping area A is formed by the rotating drum head 30 and the guide pins 31 and 32.
The vehicle travels in contact with the like, and cleaning by wet wiping is effectively performed.

In this case, in the initial stage, the cleaning is performed in the wet wiping area A which is wet. Since the notch hole 20 is provided in the wet wiping area A, the rotary drum head 30 and the guide pin Even if it comes into contact with 31, 32 or the like, a sticking phenomenon does not occur, and smooth wet wiping is performed.

When the wet wiping is performed over a predetermined length of the cleaning tape 5, the amount of the cleaning liquid that has permeated the cleaning liquid absorber 12 is reduced, and the degree of wetness is reduced. The transfer adhesion of the liquid is gradually reduced, and the transfer adhesion of the cleaning liquid is almost eliminated or slightly decreased in the rear portion of the wet wiping area A.

Following this wet wiping area A, an empty wiping area B over a predetermined length in the latter half of the cleaning tape 5
Comes to run, but the cleaning absorber 12
, The cleaning liquid permeates only slightly, so that there is almost no transfer of the cleaning liquid to the empty wiping area B.
The vehicle travels in contact with the reference pins 0 and the guide pins 31, 32 and the like, and the cleaning liquid adhering thereto is removed by dry wiping.

Further, the cleaning liquid applying means 10 uses a rotating shaft formed in a bottomed cylindrical body having an open top, and the opening is supported by the upper shell in an exposed state as a cleaning liquid supply hole. Therefore, a predetermined amount of the cleaning liquid can be injected into the bottomed cylinder through the opening, and the injection amount of the cleaning liquid is limited, so that the handling becomes easy.

[0031]

As described above, the cassette type cleaning apparatus of the present invention is a cleaning cassette equipped with a rotatable reel hub on which a cleaning tape is wound and a cleaning liquid applying means provided on a traveling path of the cleaning tape. The cleaning tape is divided into a wet wiping area and an empty wiping area, and a plurality of cutout holes having a predetermined size are formed at predetermined intervals in the wet wiping area. The action is performed, and a cutout hole is provided in the wet wiping area, so that effective wet wiping can be performed without sticking phenomenon between the object to be cleaned and the wet wiping in the latter half. The cleaning liquid adhering by the action is removed by dry wiping. After cleaning, if Torisare this cleaning device, an excellent effect of not Kisa to any problem be used immediately without having to worry about the drying time.

[0032] The cleaning liquid application means may be a hollow shaft having a bottom and open at the top and having a window hole formed in a peripheral wall surface, and a roll-shaped shaft attached to the peripheral wall surface of the rotation shaft. The rotating shaft is loosely fitted into a bearing hole provided in the upper shell, and the upper opening is formed as a cleaning liquid supply hole, thereby facilitating the injection of the cleaning liquid. In addition, since the rotating shaft is a bottomed cylindrical body, the amount of the cleaning liquid to be injected is limited, so that an excessive cleaning liquid is not supplied, and an excellent effect that cleaning can always be performed in an appropriate state is achieved. Play.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a cassette type cleaning device according to the present invention.

FIG. 2 is a schematic plan view of the cassette type cleaning device with an upper shell removed.

FIG. 3 is an enlarged plan view showing cleaning application means of the cassette type cleaning device.

FIG. 4 is a cross-sectional view including an upper shell and a lower shell taken along line XX of FIG. 3;

FIG. 5 is an explanatory view showing a part of a cleaning tape used in the cassette type cleaning device.

FIG. 6 is a perspective view showing only essential parts when the cassette-type cleaning device is used for cleaning a VTR.

[Description of Symbols] 1 cleaning device; 2 upper shell; 2a window; 3 lower shell; 4 lid; 5 cleaning tape; 6 supply reel; 7 take-up reel;
Cleaning liquid supply hole; 9 Guide pin; 10 Cleaning liquid application means; 11 Rotary shaft; 12 Cleaning liquid absorber; 13 Bottom; 14 Shaft;
Window holes; 16, 17 Flange portions; 16a, 17a Hemispherical projections; 18, 19 Bearing holes; 20 Notch holes; 30 Rotating drum head; 31, 32 Guide pins; A wet wiping area; B empty wiping area.

Claims (4)

[Claims] 1. A cleaning cassette comprising: a rotatable reel hub on which a cleaning tape is wound; and a cleaning liquid application unit provided on a traveling path of the cleaning tape, wherein the cleaning tape has a wet wiping area and an empty wiping area. A plurality of cutout holes of a predetermined size are formed at predetermined intervals in a wet wiping area. 2. The cassette type cleaning apparatus according to claim 1, wherein the wet wiping area is provided at a start end side in a running direction of the cleaning tape. 3. A cleaning cassette comprising an upper shell and a lower shell equipped with a rotatable reel hub on which a cleaning tape is wound and a cleaning liquid applying means provided on a traveling path of the cleaning tape; The liquid application means includes a rotating shaft formed in a hollow cylindrical shape having a bottom and an opening at an upper part, and having a window hole in a peripheral wall surface, and a roll-shaped cleaning liquid absorber attached to the peripheral wall surface of the rotating shaft. The rotating shaft is loosely fitted in a bearing hole provided in the upper shell,
A cassette type cleaning device, wherein an upper opening is a cleaning liquid supply hole. 4. The cassette type cleaning apparatus according to claim 3, wherein a flange portion is provided on a peripheral wall near upper and lower ends of the rotating shaft, and a plurality of protrusions for reducing friction are formed on the flange portion.