JPH087523Y2 - Cleaning tape cassette - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a cleaning tape cassette for cleaning a head, a pinch roller and a capstan of a video cassette recorder, an audio cassette recorder and the like.

[Prior Art] Conventionally, so-called dry type and wet type cleaning tape cassettes have been known as this type of cleaning tape cassette.

The dry cleaning tape cassette incorporates a dry cleaning tape consisting of an abrasive tape coated with a polyester base film with abrasives of about # 10000 to # 20000 containing fine abrasive grains into the cassette body, similar to a normal tape cassette. The cleaning tape is loaded in a recorder and operated in a reproduction mode to bring the cleaning tape into sliding contact with a head or the like, and cleaning is performed by its polishing action.

The wet cleaning tape cassette incorporates a wet cleaning tape made of cloth woven with nylon or polyester and a cleaning liquid application tank, and then IPA cleaning liquid or CFC cleaning liquid is injected into the tank and loaded into a recorder for playback. By performing the mode, the cleaning tape that moves in sliding contact with the coating pad of the tank is wetted with the cleaning liquid, and the cleaning tape wipes away dirt such as magnetic tape abrasion powder and grease on the head. Is.

[Problems to be Solved by the Invention] Since the conventional cleaning tape cassette is divided into the dry type and the wet type as described above, surface cleaning of the head and the like and wiping of dirt are performed by different cleaning tape cassettes. It is necessary for the user to prepare two types of cleaning tape cassettes, it is troublesome to replace the cleaning tape cassettes, and the dealers must handle them clearly. Various drawbacks have been pointed out.

The present invention has been made in order to eliminate such a conventional defect, and an object thereof is to provide a cleaning tape cassette which can be used as both a dry type and a wet type with a single cassette.

[Means for Solving the Problems] In the cleaning tape cassette according to the invention according to claim 1, in order to achieve the above-mentioned problems, a cleaning tape is connected between the take-up reel and the supply reel in the cassette body. In the cleaning tape cassette, the cleaning tape is composed of a connecting tape in which only the lengthwise end faces of the dry cleaning tape and the wet cleaning tape are abutted, and the backing tape is adhered only to the connecting portion.

In the cleaning tape cassette according to the invention as set forth in claim 2, a tank for applying the cleaning liquid to the surface of the connecting tape is arranged in the tape outlet passage near the supply side reel in the cassette body, and the tank is It incorporates an application pad which is brought into sliding contact with the surface of the connecting tape, and an orifice which adjusts the infiltration rate of the cleaning liquid supplied to the tank into the pad.

Further, in the cleaning tape cassette according to the third aspect of the present invention, the orifice is formed by a small hole of a plastic resin sheet provided in the cleaning liquid supply port of the tank.

[Operation] In the cleaning tape cassette according to the invention described in claim 1, the cleaning tape connected between the take-up reel and the supply reel in the cassette body is a connection tape of a dry cleaning tape and a wet cleaning tape, In this case, both ends of the connecting tape are wound on both reels via the leader tape as usual. Connection between each tape is made by attaching backing tape across both tapes with a heat-sensitive adhesive or bond adhesive, and select an adhesive material so that the adhesive strength does not decrease with the cleaning liquid used, and the tensile strength is 3 kg. The length of the backing tape should be about 3 to 4 mm so that the running torque does not increase excessively when the connecting portion of the dry cleaning tape and the wet cleaning tape touches the head. Is desirable.

As the dry cleaning tape, it is preferable to use one having a thickness of about 24 to 40 μm so as not to curl due to the adhesion of the cleaning liquid.
The equivalent of 00 to # 12000 is the best. For the abrasive coating layer on the surface, select the adhesive of the coating base material so that the abrasive will not melt or peel even if it gets wet with the cleaning liquid. It is better to be able to perform soft polishing as described above.

As the wet cleaning tape, a cloth woven of nylon or polyester is used, and IPA or CFC cleaning liquid is applied and soaked as necessary.

When cleaning the head or the like of the recorder device with such a cleaning tape cassette, the cassette is loaded into the device as usual with all the tape wound on the supply reel, and the device is operated in the playback mode. As a result, first the surface of the head etc. is polished with the dry cleaning tape after the tip side leader tape,
Then, the head and the like are wiped with a wet cleaning tape.

In the cleaning tape cassette according to the present invention, a tank for applying a cleaning liquid to the surface of the connecting tape is arranged in the tape outlet passage near the supply reel in the cassette body, and the tank is connected to the connecting tank. An application pad that is in sliding contact with the surface of the tape and an orifice that adjusts the infiltration rate of the cleaning liquid supplied to the tank into the pad are incorporated. Therefore, in this case, when the cleaning liquid is injected into the tank, the pad is gradually infiltrated by the orifice, and the pad does not run out even if the dry cleaning tape is started at the time of cleaning. Therefore, it is possible to continue supplying the sufficient cleaning liquid.
It goes without saying that adjustment of the infiltration rate of the cleaning liquid into the pad can be achieved by appropriately setting the opening diameter of the orifice.

In the cleaning tape cassette according to the invention as set forth in claim 3, since the orifice is constituted by a small hole of the plastic resin sheet provided in the cleaning liquid supply port of the tank, for example, the supply port of all opening diameters. It is possible to attach an orifice that gives a desired infiltration rate by a simple means, such as by covering with a resin sheet having pinhole-shaped small holes of about 0.1 to 0.2 mm.

A preferred embodiment of the present invention will be described below with reference to the drawings.

[Embodiment] FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view of a connecting portion between a dry cleaning tape and a wet cleaning tape, and FIG. 3 is a cleaning liquid mounted on a cassette body. FIG. 4 is an enlarged cross-sectional view of the tank, and FIG. 4 is an explanatory view showing a usage state.

Although the embodiment shown in FIG. 1 is a cleaning tape cassette for a video cassette recorder, it goes without saying that the present invention can also be applied to an audio cassette recorder.

In FIG. 1, the cassette body 1 and its take-up reel 2
The supply reel 3 and the supply reel 3 have the same structure as a normal video tape cassette, and one end of each of the leader tapes 4a and 4b is fixed to each reel 2 and 3, respectively. About 1.2 m of dry cleaning tape 5 is attached to the other end of the leader tape 4a on the tip side.
One end of the wet cleaning tape 7 is joined to the other end of the dry cleaning tape 5 by another backing tape 8 and the other end of the wet cleaning tape 7 is another backing tape. The tape 9 is joined to the other end of the leader tape 4b on the rear end side. A tank 10 for applying a cleaning liquid is arranged in the tape outlet passage of the cassette body 1 on the supply reel 3 side. The length of the dry cleaning tape 5 is 1.
The length is not limited to 2 m, but it is preferably within the range of 1 to 2 m in view of the cleaning effect by polishing and the tape reproduction speed.

The state of joining the dry cleaning tape 5 and the wet cleaning tape 7 with the backing tape 8 is enlarged and shown in FIG. That is, in this case, the dry cleaning tape 5 is one in which the abrasive coating layer 52 containing abrasive grains is formed on the surface of the polyethylene base film 51 using an adhesive binder insoluble in the cleaning liquid, and the wet cleaning tape 7 is Polyester woven fabric
It is formed by applying a cleaning liquid impermeable backing coating 72 to 71. Both cleaning tapes 5,7
The backing tape 8 is attached to the back surface of the polyester tape 81 with the heat-sensitive adhesive layer formed on the polyester tape 81.
82, and the adhesive layer 82 joins the tapes.

The tank 10 mounted on the cassette body 1 includes a cylindrical tank body 11 inserted into the cassette body 1 as shown in FIG. It is fitted so that it cannot rotate relative to it. The tank body 11 has a vertically long slit opening 14 toward the tape running path, and is filled with a felt filler 13 inside, and a part of the felt filler 13 is used for the slit opening 14
A cleaning liquid application pad 13a is formed on the surface of the tape by projecting from the outside to the outside. An opening cap 15 is fitted on the upper end of the tank body, and the cap opening 15a serves as a cleaning liquid inlet. This cap 15
The opening 15a is terminated by a plastic sheet 16 with a pinhole sandwiched between the tank body 11 and the cap 15, and the sheet 16 is provided with a pinhole 16a which communicates the opening 15 with the inside of the tank body 11. To form an orifice for adjusting the infiltration speed of the cleaning liquid into the felt filling body 13. Reference numeral 17 is a rib formed on the outer surface of the tank body 11 so as to regulate the upper end of the tape running path.

In the example shown in FIG. 3, the sheet 16 with the pinhole is provided.
Although it is in contact with the felt filling body 13,
A gap may be formed, in which case it is desirable that the gap does not exceed 3 mm.

Fig. 4 shows the usage state. That is, FIG. 4 shows the first
The cleaning tape cassette according to the illustrated embodiment is loaded in a video cassette recorder, and the loading posts 44a and 44b on the winding side and the supply side of the recorder have moved from the broken line positions to the solid line positions.
The cleaning tape is the supply reel 3 of the cassette body 1.
In order from the tape guide 41b, all erasing head 42, supply impedance roller 43b, supply side loading post 44b, rotary head drum 45, winding side loading post 44a, winding impedance roller 43a, audio erasing head 46, audio control head The winding reel 2 is wound around the 47, the pinch roller 48, and the tape guide 41a.
Incidentally, 49 is a capstan shaft.

Therefore, when the cleaning tape cassette, in which the cleaning liquid has been injected into the tank 10 in advance, is set in the recorder and the recorder is operated in the reproduction mode, the heads and the tape guides are first polished by the dry cleaning tape 5. To be cleaned. In this case, since the cleaning liquid is also applied from the tank 10 to the dry cleaning tape 5, for example, a soft polishing effect similar to that obtained by softly polishing with an oil grindstone can be obtained, and the magnetic head abrasion powder etc. firmly adhered can also be polished. To be removed. When the wet cleaning tape 7 comes around in pairs, each part after polishing is wiped by the woven cloth portion 71 containing the cleaning liquid of the wet cleaning tape 7. In this case, the application of the cleaning liquid to the woven cloth portion 71 of the wet cleaning tape 7 is performed along with the tape running by the sliding contact with the pad 13a of the tank 10, and the supply of the cleaning liquid at that time is performed by the sheet.
Since the wet cleaning tape 7 is limited in number by the 16 pinholes 16a and gradually performed, it is maintained until the running of the entire length of the wet cleaning tape 7 is completed.

[Effects of the Invention] As described above, according to the present invention, both cleaning by dry polishing and cleaning by wet wiping can be achieved by one operation with one cassette, and the user can perform two kinds of cleaning. It is not necessary to prepare a cleaning tape cassette, and replacement of the cleaning tape cassette is not necessary, and even a store or the like can simply handle it as a cleaning cassette without making a distinction between dry type and wet type.

Further, since the backing tape is attached only to the connecting portion, it is possible to maintain the tensile strength so that the dry and wet cleaning tapes do not separate during cleaning running with the cleaning tape, and the backing tape is attached only to the connecting portion. Since the tapes are stuck together, the running torque of the cleaning tape does not increase excessively.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view of a connecting portion between a dry cleaning tape and a wet cleaning tape, and FIG. 3 is an enlarged sectional view of a cleaning liquid tank mounted on a cassette body. FIG. 4 and FIG. 4 are explanatory views showing a usage state. (Description of symbols of main parts) 1 ... Cassette body, 2 ... Take-up reel, 3 ... Supply reel, 5 ... Dry cleaning tape, 7 ... Wet cleaning tape, 8 ... Joining backing tape, 10 …… Cleaning liquid tank, 13a …… Cleaning liquid application pad, 16a …… Pinhole (orifice)

Claims (3)

[Scope of utility model registration request] 1. A cleaning tape cassette in which a cleaning tape is connected between a take-up reel and a supply reel in a cassette body, wherein the cleaning tape is abutted only on the end faces in the length direction of a dry cleaning tape and a wet cleaning tape. A cleaning tape cassette, wherein the cleaning tape cassette comprises a connecting tape, and a backing tape is attached only to the connecting portion. 2. A tank for applying a cleaning liquid to the surface of the connecting tape is arranged in the tape outlet passage near the supply reel in the cassette body, and when the tank is in sliding contact with the surface of the connecting tape, the applying pad. The cleaning tape cassette according to claim 1, further comprising: an orifice that adjusts a rate of infiltration of the cleaning liquid supplied to the tank into the pad. 3. The cleaning tape cassette according to claim 2, wherein the orifice is a small hole of a plastic resin sheet provided in the cleaning liquid supply port of the tank.