JPH0512630A - Head cleaner - Google Patents

Abstract

PURPOSE:To wipe a magnetic head on a player side in a wet process with a cleaning tape, to which a cleaning liquid is supplied and applied advance and to simultaneously and concurrently wipe the above head in a dry process. CONSTITUTION:A cartridge case 1 had a liquid reservoir cylinder 35 in inside. The liquid reservoir cylinder 35 can be supplied with the cleaning liquid (a) from the exterior of the case. The cleaning tape 2 incorporated in the cartridge case 1 is traveled in contact with circumferential surface of the liquid reservoir cylinder 35. A through hole 38 for supplying the cleaning liquid (a) in the liquid reservoir cylinder 35 to the cleaning tape 2 is provided in the state of passing through the inside and outside. By this method, a wet area W coated with the cleaning liquid is brought into existence on the cleaning tape 2 attending upon the travel of the tape 2, and 2 dry area D not coated with the cleaning liquid is brought into existence above the wet area W in their lapping state in the tape widthwise direction in attendance upon the travel of the tape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head cleaner which is applied to a player for receiving a magnetic tape cartridge for video or audio and cleans the magnetic head.

[0002]

2. Description of the Related Art In a head cleaner of this type, a predetermined amount of cleaning tape is held in a cartridge case whose outer shape is substantially the same as that of a real magnetic tape cartridge for video or audio. When the player is loaded into the player, the cleaning tape is pressed against the peripheral surface of the magnetic head to clean the head surface.
Such a head cleaner is disclosed, for example, in JP-A-56-10532.
It is known in Japanese Patent Publication No. 1 and the like.

[0003]

Therefore, in general, the cleaning is conventionally performed by either wet cleaning in which a cleaning liquid is attached to a cleaning tape or dry cleaning in which the cleaning liquid is not used at all. Wet cleaning is superior to dry cleaning in terms of the cleaning effect on the head surface. On the other hand, there are problems that traces of contact of the cleaning liquid remain after cleaning and that the constituent fibers of the cleaning tape adhere to the head surface together with the cleaning liquid. Further, the wet cleaning has an order of magnitude greater sliding contact resistance between the cleaning tape and the magnetic head than the dry cleaning, and is apt to cause the tape to run or damage the magnetic head surface. Further, since the head is wet, there is a disadvantage that the player cannot perform the reproducing operation immediately after cleaning.

The dry cleaning is in time when the head surface is less contaminated, but it is difficult to obtain a sufficient cleaning effect when the head surface is contaminated to a certain extent or more. Further, there is also a problem in that the magnetic powder and the microdust removed from the head surface cannot be properly captured on the tape surface, and it is difficult to reliably remove the contaminants from the deck. As described above, both wet cleaning and dry cleaning have advantages and disadvantages, and the conventional head cleaner cannot reliably and sufficiently clean the magnetic head.

Therefore, an object of the present invention is to use a wet cleaning method and a dry cleaning method together to "wet" the magnetic head and then "wipe from" the magnetic head, thereby improving the cleaning performance of the magnetic head, and at the same time, cleaning tape. Another object of the present invention is to obtain a head cleaner capable of preventing the sliding contact resistance between the magnetic head and the magnetic head from becoming excessive and ensuring the operation reliability.

[0006]

A head cleaner according to the present invention is provided in a cartridge case 1 as shown in FIG.
A bottomed liquid storage cylinder 35 capable of replenishing the cleaning liquid a from the outside of the case, and a cleaning tape 2 running in contact with the peripheral surface of the liquid storage cylinder 35 are provided.
A communication hole 38 for supplying the cleaning liquid a in the liquid storage cylinder 35 to the cleaning tape 2 is provided in a penetrating manner inside and outside.

[0007]

When the head cleaner of the present invention is loaded into the player after the cleaning liquid a is replenished from the outside of the cartridge case 1 to the liquid storage cylinder 35, the cleaning tape 2 runs in contact with the peripheral surface of the liquid storage cylinder 35. At that time, the cleaning liquid a in the liquid storage cylinder 35 is sequentially supplied to the cleaning tape 2 through the lower communication hole 38. That is, the communication hole 38 of the liquid reservoir 35 faces the lower end side of the cleaning tape 2 in the vertical width direction, and the cleaning liquid a is
The tape 2 infiltrates upward from the lower end in the width direction. At this time, there is a short time required until the cleaning liquid a is supplied to the liquid storage cylinder 35 and is loaded into the player, and during this time, the cleaning tape 2 is entirely covered in the vertical width direction and also in the tape longitudinal direction. With the spread, the cleaning liquid a is already applied.

Next, when the cleaning tape 2 is loaded into the player and the cleaning tape 2 starts to run, the cleaning liquid a in the liquid storage cylinder 35 is consumed and the liquid level thereof is lowered. Moreover, as the tape runs, the diffusion and permeation of the cleaning liquid a from the lower end side of the tape 2 toward the upper side is also delayed. Therefore, as shown in FIG. 1B, as the cleaning tape 2 travels in the direction of the arrow, the amount of the cleaning liquid a applied in the vertical width direction of the tape 2 is determined by the amount of the cleaning liquid a in the liquid reservoir 35. It gradually decreases in a state that is almost proportional to the decrease in surface area. That is, the wet area W where the cleaning liquid a is applied is formed on the cleaning tape 2, and the dry area D where the cleaning liquid a is not applied is formed adjacent to the wet area W. At that time, the boundary line B between the wet area W and the dry area D gradually changes downward along the longitudinal direction of the tape. As a result, the wet area W and the dry area D coexist on the cleaning tape 2 within a limited range in the tape longitudinal direction, and the area of the wet area W gradually decreases as the tape runs. Dry area D
The area of is expanding.

[0009]

According to the present invention, although the cleaning liquid a in the liquid storage cylinder 35 is applied to the cleaning tape 2, the wet area W is formed on the cleaning tape 2.
Will come into contact with the magnetic head H in the state of coexisting with the dry region D. Therefore, while the magnetic head H is initially "wetted", "wet wiping" and "kara wipe" are performed simultaneously immediately after that. Meanwhile, it will be wiped from the end.
Therefore, the surface of the magnetic head can be wiped off and then wiped off for good cleaning. On the other hand, the area of the wet area W on the cleaning tape 2 decreases as the tape runs, and the area of the dry area D gradually increases by that amount. Therefore, the cleaning tape 2 and the magnetic head H
It is possible to reliably prevent the sliding contact resistance with the excessive increase, and it is possible to prevent the cleaning tape 2 from running and the magnetic head H from being scratched.

[0010]

EXAMPLE In FIG. 2, the head cleaner shown in the figure is VHS.
It has a cartridge case 1 having substantially the same external shape and function as a real type magnetic tape cartridge. The cleaning tape 2 is held inside this case. One end of the cleaning tape 2 is locked to the supply reel 3 and the other end is locked to the winding reel 4. A pilot roller mechanism 5, a liquid supply means 7, a tape surface switching means 6 and the like are arranged in the path of the cleaning tape 2 between the reels 3 and 4. In addition to this, in the case 1, a cleaning means 9 for the capstan C and the pinch roller Q, a pair of left and right friction pulleys 10 and 11 corresponding to the tape reels of the magnetic tape cartridge, and an auto-stop means 12 for defining the cleaning time are provided. Is equipped with.

Case Structure The cartridge case 1 is composed of upper and lower plastic cases 1a and 1b joined together in a lid-like manner. On the front surface of the case 1, there are provided tape loading pockets 13 and 14 and a capstan pocket 15, respectively, and the case 1 is provided with a front lid 16 for opening and closing the front surface thereof. The front lid 16 is rotationally biased to the closed posture and is rotationally locked in the closed posture as in the case of the real magnetic tape cartridge, and when loaded in the player, the member on the player side automatically unlocks and opens upward. Rotate.

The lower case 1 corresponds to standard members such as a positioning pin on the player side, a reel brake release pin, a reel drive shaft, and a lamp for detecting the start and end of the tape.
Positioning holes 17, 17, a release pin hole 18,
The drive shaft insertion holes 19 and 19, the ramp hole 20 and the like are formed at predetermined positions in a predetermined shape. At the center of the lower surface of the lower case 1b, there is a groove 21 that crosses the lamp hole 20 back and forth to prevent erroneous loading. These holes and grooves are provided mainly for loading the cartridge case 1 on the player without any trouble, and the holes 17, 18 and 20 are not directly related to the cleaning operation.

In FIGS. 2, 5, and 6, friction pulleys 10 and 11 having engagement teeth in the form of spline holes are rotatably arranged in the drive shaft insertion holes 19 and 19, respectively. When the head cleaner is loaded on the player, the friction pulleys 10 and 11 are engaged with the reel drive shaft S and driven to rotate in accordance with each operation mode. A rubber wheel 23 for driving the supply reel 3, the pilot roller mechanism 5, the tape surface switching mechanism 6 and the like is fixed to the lower side of the outer peripheral surface of each of the friction pulleys 10 and 11.

Cleaning Tape and its Arrangement The cleaning tape 2 is mainly composed of a cleaning ribbon having a liquid absorbing property, and lead tapes are connected to both ends thereof. It has a total length including the length that allows tape winding. As the cleaning ribbon, a tape material such as natural leather, artificial leather, woven cloth or non-woven cloth, or a plastic sheet laminated with the above-mentioned sheet material on one side is used. Considering the damage to the head surface, the function of removing micro dust, the durability, etc., the cleaning ribbon formed of artificial leather is preferable.

In FIG. 2, a movable pilot roller 29 and a fixed tape guide 24 are provided on both sides of the opening of the pocket 13 on the right side. The cleaning tape 2 is guided between these two members 29 and 24, and the tape 2 is pulled out to the front of the case by the player-side tape pull-out member L which is inserted into the pocket 13 from below. The friction pulley 10 on the right side is provided between the pilot roller 29 and the supply reel 3.
The three fixed guide pins 25 for guiding the cleaning tape 2 are arranged so as to bypass. Further tape guide 2
4 between the winding reel 4 and the winding reel 4
Four fixed guide pins 26 for guiding the cleaning tape 2 are arranged along the inner surfaces of the right side wall and the rear side wall of the. That is, when the supply reel 3 is the starting end, the cleaning tape 2 bypasses the rear side of the right-side friction pulley 10 from the supply reel 3 and crosses the front surface of the right-side pocket 13, and then is reversely guided toward the rear side of the case. A tape path that ends with the winding reel 4 located near the rear left end is taken. In this stored state, a predetermined amount of tape is wound around the supply reel 3. The tape guide 24
The guide pins 25 and 26 are expected to be round pins integrated with the lower case 1b, but they may be separate pins or freely rotatable rollers.

The supply reel 3 is rotatably supported by a swing arm 27 which is horizontally swingably mounted on the bottom wall of the lower case 1b. With the spring 28 acting on the swing arm 27, the supply reel 3
The rubber ring 23 of the friction pulley 10 is attached to the peripheral surface of the lower flange 3a.
Always press against. A large number of saw tooth-shaped friction teeth are formed at small intervals on the peripheral surface of the lower flange 3a. In the eject mode in which the cleaning is stopped by the automatic stop means 12 to be described later and the tape pull-out member L is returned into the pocket 13, the supply reel 3 is rewound and rotated by the friction pulley 10, whereby the cleaning tape 2 pulled out of the case. Retract and store.

Pilot Roller Mechanism The pilot roller mechanism 5 is for reducing the wrapping angle of the cleaning tape 2 with respect to the magnetic head H to reduce the rotation resistance, and for defining the application range of the cleaning liquid to a constant width as described later. Is. Specifically, it has a first swing arm 30 that supports the pilot roller 29, and a second swing arm 31 that supports the first swing arm 30 so that it can swing. The swing base end of the first swing arm 30, that is, the second swing arm 31.
A passive roller 32 for returning and swinging the pilot roller 29 is fixed to a connection point with and so as to swing together with the first swing arm 30. The second swing arm 31 is biased by a spring 33 so that the passive roller 32 is constantly in pressure contact with the friction pulley 10. A spring 34 is stretched between the swing arms 30 and 31 to swing and bias the first swing arm 30 in the standby posture.

When the head cleaner is not used, the first swing arm 30 and the pilot roller 29 are in the standby position shown in FIG. When the cleaning tape 2 is pulled out of the case by the tape pull-out member L as shown in FIGS. 3 and 4, the first swing arm 30 swings counterclockwise while resisting the spring 34 by the tension acting on the tape 2. The tape 2 is moved to guide the tape 2 to a position near the center of the pocket 13. Then, the winding angle of the tape 2 around the magnetic head H becomes small, and the rotation resistance applied to the magnetic head H becomes small. The returning operation of the pilot roller 29 to the original position is performed by rewinding drive of the friction pulley 10 in the eject mode, and the passive roller 32 that is in pressure contact with the rubber ring 23 is rotationally driven in the opposite direction to the friction pulley 10. , And returns to the standby position shown in FIG.

Liquid supply means In the cartridge case 1, as shown in FIG. 2, between the pilot roller 29 in the standby position and the guide pin 25 near the friction pulley 10, the liquid supply for supplying the cleaning liquid to the cleaning tape 2 is supplied. Means 7 are provided. As shown in FIG. 1A, the liquid supply means 7 includes a liquid storage cylinder 35 formed in a bottomed cylindrical shape, and the liquid storage cylinder 35 is sandwiched and fixed at a fixed position between the upper and lower cases 1a and 1b. There is. When not in use, the cleaning tape 2 is in contact with the peripheral surface of the liquid storage tube 35, and the coating sheet 36 is attached to the peripheral surface of the liquid storage tube 35 on the side of the surface in sliding contact with the tape 2. The upper case 1a is provided with an opening communicating with the upper surface of the opening of the liquid storage cylinder 35, and a notched rubber cap 37 for preventing the intrusion of dust is provided in this opening. The cleaning liquid a can be replenished into the liquid reservoir 35 by pushing the rubber cap 37 open.

A communication hole 38 is formed in the lower end of the peripheral wall of the liquid storage cylinder 35 on the sliding contact surface side with the cleaning tape 2 so as to penetrate inside and outside.
You can go outside via 8. The coating sheet 36 is formed of, for example, a sheet of ethylene tetrafluoride having excellent lubricity, and has a vertical slit 36a formed in the sliding contact surface with the cleaning tape 2. A supply passage 35a for the cleaning liquid a facing the slit 36a is formed between the coating sheet 36 and the peripheral wall of the liquid storage cylinder 35, and the cleaning liquid a in the liquid storage cylinder 35 is communicated with the communication hole 38.
A predetermined amount can be applied and supplied from the supply passage 35a through the slits 36a to the cleaning tape 2 without suddenly overflowing.

Tape Release Mechanism from Liquid Supply Means When the head cleaner is loaded on the player, the cleaning tape 2 is pulled out from the cartridge case 1 toward the front of the case as described above. When this tape is loaded, the tension applied to the cleaning tape 2 causes the first
When the swinging arm 30 swings counterclockwise against the spring 34 and the pilot roller 29 moves toward the center of the pocket 13, as shown in FIG. That is, it moves away from the peripheral surface of the liquid storage cylinder 35. For this reason, the replenishing cleaning liquid a is only applied to the inside of the liquid reservoir 35 within a certain range of the cleaning tape 2. The arrangement position of the liquid supply means 7 is determined so that this coating position comes into contact with the head surface of the magnetic head H when the tape loading in FIG. 3 is completed.

More specifically, in the unused state of FIG. 2, the cleaning tape 2 is wound around the supply reel 3 for a predetermined length. However, as shown in FIGS. 3 and 4, when the cleaning tape 2 is pulled out to the front of the case by the tape pull-out member L protruding from the bottom into the pocket 13, the tape 2 is unwound from the supply reel 3 at the beginning of pulling out, At this stage, the tape 2 is the liquid reservoir 3
The cleaning liquid a is applied and supplied to the tape 2. When the tension applied to the cleaning tape 2 by the forward movement of the tape drawing member L overcomes the urging force of the spring 34, the pilot roller 29 moves to the center side of the pocket 13 in the above-described manner. The cleaning tape 2 goes away from the liquid reservoir 35, and the supply of the cleaning liquid a is cut off.

How the cleaning liquid a is applied and supplied from the liquid supply means 7 to the cleaning tape 2 at the beginning of tape loading will be described with reference to FIG. 1B. In the unused state of FIG. After replenishing the cleaning liquid a from the outside of the case and before the cleaning tape 2 is pulled out to the player side, the cleaning liquid a in the liquid storage tube 35 is applied to the tape 2 through the communication hole 38 and the supply passage 35a. It At this time, since the tape 2 is not running, the cleaning liquid a first diffuses and permeates upward from the lower end side of the tape 2, and the cleaning liquid a wets over the entire width of the tape 2 in the vertical direction. The wetting over has a predetermined spread in the longitudinal direction of the tape.

Next, when the cleaning tape 2 starts running while receiving the tape loading and in contact with the liquid storage cylinder 35, the cleaning liquid a in the liquid storage cylinder 35 is consumed and the liquid surface gradually decreases. In addition, since the tape 2 is running, the cleaning liquid a supplied to the lower side of the tape 2 is soaked up above the tape 2 and cannot go there. as a result,
The wet region W coated with the cleaning liquid a on the cleaning tape 2 initially extends over the entire width in the vertical direction, but its upper limit gradually moves downward as the tape runs. That is, the boundary line B between the dry area D and the wet area W, to which the cleaning liquid a is not applied, is inclined obliquely downward in the direction opposite to the tape running direction.
The inner volume of the liquid storage tube 35 is set so that the tape 2 is separated from the liquid storage tube 35 when the cleaning liquid a is completely supplied to the cleaning tape 2.

Tape Surface Switching Mechanism In the cartridge case 1, the contact position of the cleaning tape 2 with respect to the magnetic head H is changed from the wet area W where the cleaning liquid a is attached to the dry area D where the cleaning liquid a is not completely attached. It has tape surface switching means 6 for forcibly moving. As the tape surface switching means 6, as shown in FIGS. 2 and 7, a swing arm 39 which is horizontally swingably supported on the bottom wall of the lower case 1b and a swing arm 39 which is swingably supported near the swing tip. The disk-shaped switching disc 40 and the spring 41 for pressing and contacting the rubber ring 23 of the friction pulley 11 on the left side of the switching disc 40.
On the upper surface of the switching disk 40, a guide boss 42 and a hooking roller 43 are provided upright at two positions, that is, in the center and near the periphery, with the cleaning tape 2 sandwiched in the front and rear.

Simultaneously with the completion of tape loading, the friction pulley 11 is driven clockwise by the reel drive shaft S,
At the same time, the switching disc 40 is driven by the rubber ring 23 in the counterclockwise direction. Along with this, as shown in FIG. 4, the hooking roller 43 also rotates along with the switching disk 40, so that the cleaning tape 2 is pulled while being hooked by the hooking roller 43, and the amount of the pulling causes the cleaning tape 2 to move. The contact position with the magnetic head H shifts from the wet area W to the dry area D as shown in FIG. 1 (B), and the magnetic head H is cleaned at the dry portion of the tape 2. However, as described above, the dry region D also coexists in the wet region W within a certain range in the longitudinal direction of the tape 2 so that the area gradually increases as the tape runs, and at this stage. Therefore, "wet wiping" and "drying" of the magnetic head H have already been performed. Therefore, the wet area W
Is not moistened with the cleaning liquid a over the entire width in the vertical direction, and the sliding contact resistance between the magnetic head H and the cleaning tape 2 does not become excessive when moving from the moistened region W to the dry region D.

After the switching disc 40 has rotated by a certain angle as shown in FIG. 3, the tension of the spring 41 overcomes the rotational force of the switching disc 40 and does not rotate any more. The rubber ring 43 is slipped. For this,
The spring 41 is hooked on a pin 44 on the board surface of the switching disk 40, and the spring 41 is expanded and deformed when the switching disk 40 rotates. The switching disc 40 is the friction pulley 1.
Almost at the same time when the driving of No. 1 is stopped, it is returned in the clockwise direction by the tension of the spring 41 and returns to the original posture shown in FIG.

Cleaning means for capstan and pinch roller In FIG. 4, the cartridge case 1 is additionally provided with a cleaning means 9 for cleaning the capstan C and the pinch roller Q. The cleaning means 9 is a hexagonal column-shaped wiping pad 46/47 circumscribing the capstan C and the pinch roller Q, respectively, and is horizontally swingably supported on the bottom wall of the lower case 1b to remove the pad 46/47. It comprises a holder 48 for holding it and a spring 49 for urging the holder 48 to swing toward the capstan pocket 15 side. The holder 48 has a pad 46.
A holding frame 48a for inserting 47 is provided upright. Both pads 46 and 47 are made of, for example, felt, and are attached to the holding frame 48a in such a manner that the ridge lines on the peripheral surface of the pads circumscribe the capstan C and the pinch roller Q, respectively. Both pads 46 and 47 can be replaced as needed. Reference numeral 50 is an auxiliary cleaning pad for the capstan C.

Winding Reel In FIGS. 2 and 8, the winding reel 4 is rotatably supported between the upper and lower cases 1a and 1b, and its lower flange 4a.
Ratchet teeth 4b formed on the peripheral surface of the ratchet claw 51
By engaging with, the tape rotates only in the tape winding direction (counterclockwise direction). An operation window 52 is opened on the rear side wall 1c of the cartridge case 1 near the winding reel 4 as shown in FIG. 8, and a part of the lower flange 4a of the winding reel 4 is exposed from the window 52 to the outside of the case. ,
The reel 4 can be manually rotated from the outside of the case through the operation window 52. In the state shown in FIG. 2, when the winding reel 4 is manually rotated in the winding direction, the cleaning tape 2 is unwound from the supply reel 3 and wound on the winding reel 4. Then, the phase position of the cleaning tape 2 is displaced by the amount of the wound tape, and the new tape surface hits the magnetic head H during tape loading. That is, the magnetic head H can be cleaned with a clean tape surface by manually rotating the take-up reel 4 as necessary, and the cleaning tape 2 is prevented from being used beyond the usable limit. The scratches on the head H are also prevented.

In order to minimize the winding of the cleaning tape 2 without waste, a mark 53 for indicating the remaining amount, for example, a number, is printed at regular intervals on the cleaning tape 2, especially on the lead tape, as shown in FIG. I am doing it. The display mark 53 can be visually recognized from the outside of the case through the viewing window 54 opened on the rear wall 1c of the case. A tape stopper 55 is arranged inside the cleaning tape 2 at a position facing the visual recognition window 54. The tape stopper 55 includes a stopper claw 56 swingably supported on the bottom wall of the lower case 1b, and a U-shaped spring 57 for biasing the stopper claw 56 against the cleaning tape 2 with a light contact pressure.
And are integrally formed.

On the wall surface of the stopper claw 56 facing the viewing window 54, a usage limit indicator 59 is printed or formed by a molding pattern or the like. The tape stopper 55 prevents the cleaning tape 2 from being further wound when the updating of the tape surface by the winding reel 4 reaches a limit. Therefore, a stopper hole 58 as shown in FIG. 9 is opened in the lead tape portion near the tape guide 24. When the stopper claw 56 falls into the stopper hole 58, even if the winding reel 4 is rotated,
The cleaning tape 2 on the supply reel 3 side cannot be wound up from the stopper hole 58. Supply reel 3 even in this state
The cleaning tape 2 of the amount necessary for tape loading is still wound around the tape. In other words, the tape stopper 55 prevents the tape 2 from being wound by the take-up reel 4 at the limit position, and leaves the tape length required for tape loading on the supply reel 3 side from the stopper hole 58, so that the tape pull-out member L and The drive mechanism of this or the head cleaner side member is prevented from being damaged.

Auto Stop Means In FIG. 2, the cartridge case 1 has an auto stop means 12 for defining the cleaning time. The auto stop means 12 includes a start detection means 60 for detecting the start of cleaning, a light source 61 for irradiating the optical sensor P for detecting the tape end on the player side with detection light, and a signal from the start detection means 60. And a power source 63, which performs power supply control so that a current is applied to the light source 61 after a certain time has elapsed.
The start detecting means 60 includes a switch operating arm 64 on which one end of a spring 41 for urging the switching disc 40 is hooked.
And a micro switch 65 which is turned on / off by the operating arm 64, and when the switching disk 40 is rotationally driven by the friction pulley 11 at the same time when the tape loading is completed, the switch operating arm 64 moves the switching disk 40. When the micro switch 65 is turned on by receiving it via the spring 41, the start of cleaning is detected and a signal current (or a drive current) is applied to the time setting means 62.

The time setting means 62 includes a delay circuit and a CR.
It is formed of an electric circuit such as a timer and is provided on the substrate 66. When receiving the signal current from the start detection means 60, a drive current is applied to the light source 61 after waiting for a set time of, for example, 3 seconds, to cause the light source 61 to emit light. The light source 61 is composed of a light emitting body such as a light emitting diode or a small light bulb that uses electricity as an energy source, and is fixed to the inner surface of the right side wall of the cartridge case 1 corresponding to the optical sensor P in FIG.
The light sensor 67 is operated by irradiating the outside of the case with detection light from the light projecting window 67 that is opened in the side wall. The power source 63 is composed of two dry batteries 63a mounted on the substrate 66. In FIG. 2, reference numeral 70 denotes a battery lid which is openably and closably mounted on the upper case 1a of the cartridge case 1.

The light source 61 is operated by the operation of the time setting means 62.
When is turned on, the optical sensor P is activated to be in the same state as when the end of the tape in the magnetic tape cartridge is detected, the drive of the reel drive shaft S and the magnetic head H is immediately stopped, and the cleaning is stopped.

(Other Embodiments) Contrary to the above embodiments, the tape surface may be switched by feeding the cleaning tape 2 to the supply reel 3 side and shifting the contact with the magnetic head H. An actuator such as a motor or a solenoid is provided in the cartridge case 1 so that the cleaning tape 2 can be moved directly or through the tape surface switching means 6. In this case, the start and stop of the actuator can be controlled by the start detecting means 60 and the time setting means 61 described above. The cleaning tape 3 is pulled out at the central pocket 14 side. Alternatively, the tape 2 may be spanned between the pockets 13 and 14. Besides, although the VHS system video head cleaner has been described in the illustrated example, it can be widely applied to a head system cleaner such as a beta system video deck or a digital recording / reproducing system audio deck in which a tape is pulled out to the front of the case. .

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a main part showing a liquid supply unit and a front view of a cleaning tape.

FIG. 2 is a cross-sectional plan view showing the internal structure when not in use.

FIG. 3 is a schematic plan view during use.

FIG. 4 is a cross-sectional plan view during use.

5 is a sectional view taken along line VV in FIG.

6 is a sectional view taken along line VI-VI in FIG.

7 is a sectional view taken along line VII-VII in FIG.

8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is an exploded perspective view of a portion A in FIG.

[Explanation of symbols]

 1 Cartridge Case 2 Cleaning Tape 7 Liquid Supply Means 13 Pocket 24 Tape Guide 29 Pilot Roller 35 Liquid Storage Tube 38 Communication Hole a Cleaning Liquid H Magnetic Head L Tape Drawout Member W Wet Area D Dry Area

[Procedure amendment]

[Submission date] October 16, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

[0009]

According to the present invention, although the cleaning liquid a in the liquid storage cylinder 35 is applied to the cleaning tape 2, the wet area W is formed on the cleaning tape 2.
Will come into contact with the magnetic head H in the state of coexisting with the dry region D. Therefore, while the magnetic head H is initially "wetted", "wet wiping" and "kara wipe" are performed simultaneously immediately after that. Meanwhile, it will be wiped from the end.
Therefore, the surface of the magnetic head can be wiped off and then wiped off for good cleaning. On the other hand, the area of the wet area W on the cleaning tape 2 decreases as the tape runs, and the area of the dry area D gradually increases by that amount. Therefore, the cleaning tape 2 and the magnetic head H
It is possible to reliably prevent the sliding contact resistance with the excessive increase, and it is possible to prevent the cleaning tape 2 from running and the magnetic head H from being scratched. Moreover, when the present invention is applied to a player for a video in which the magnetic head is tilted and rotated, the magnetic head is used for the magnetic tape even in the changing area where the wet area W and the dry area D coexist on the cleaning tape 2. The contact is made so as to cross the change area of 2 obliquely, and the first wet area W is "wipe" and then the upper dry area D is "wipe". It is possible to make the rotary servo control mechanism of the magnetic head gentle without changing sharply from "to wipe".

Claims (1)

Claims: 1. A bottomed liquid storage cylinder 3 capable of supplying the cleaning liquid a from the outside of the cartridge case 1 to the inside thereof.
5 and the cleaning tape 2 that runs in contact with the peripheral surface of the liquid storage cylinder 35. The cleaning liquid a in the liquid storage cylinder 35 is provided below the liquid storage cylinder 35.
A head cleaner characterized in that a communication hole 38 for supplying the cleaning tape 2 to the cleaning tape 2 is provided in a penetrating manner inside and outside.