JPH097131A - Recording/reproducing device - Google Patents

Abstract

PURPOSE: To remove the dirt on magnetic head transferred from a medium by providing a magnetic head cleaning means cleaning a magnetic head during the time when a medium transfer means is moved. CONSTITUTION: This device is a recording/reproducing device recording/ reproducing information by using a recording medium 1 having an optical recording surface 1a capable of optically reproducing the information and a magnetic recording surface 1b capable of magnetically recording/reproducing the information. The device is provided with a mechanical chassis 3, a tray 2 being a medium transfer means provided movably between a medium take-in/out position and a medium recording/reproducing position on the mechanical chassis 3, a brush 14 being the magnetic head cleaning means provided on the tray 2, an optical pickup 4b provided on the mechanical chassis 3 and reading the information on the optical recording surface 1a of the medium 1 and the magnetic head 7 provided in the moving path of the brush 14 of the mechanical chassis 3 and recording/reproducing the information on the magnetic recording surface 1b of the medium 1. Thus, the deterioration in the characteristic of the magnetic head 7 is prevented, and a magnetic recording/reproducing characteristic is stabilized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a disc-shaped recording medium having an optical recording surface capable of optically reproducing information and a magnetic recording surface capable of magnetically recording and reproducing information. The present invention relates to a playback device.

[0002]

2. Description of the Related Art In recent years, as a recording / reproducing apparatus, an optical reproducing-only apparatus using a medium capable of supplying a large amount of information at a low cost, as represented by a CD-ROM, has become popular. It is required to add a recording function while making the most of its features. Therefore, a method of magnetically recording on the back surface of the optical recording surface with a magnetic head has been proposed.

[0003]

However, since the recording / reproducing apparatus of the above-mentioned proposed example uses a medium such as a CD which does not have a special case such as dustproof, when contact-type recording / reproducing is performed, the medium becomes dirty. And the like are transferred to the magnetic head, and there are problems that the characteristics of the magnetic head are deteriorated, the medium is scratched, and abnormal noise is generated.

In view of the above-mentioned conventional problems, the present invention provides a recording / reproducing apparatus capable of preventing deterioration of magnetic head characteristics due to dirt even when contact-type magnetic recording / reproducing is performed on a medium having no dustproof case. The purpose is to do.

[0005]

According to another aspect of the present invention, there is provided a recording / reproducing apparatus comprising a recording medium having an optical recording surface capable of optically reproducing information and a magnetic recording surface capable of magnetically recording / reproducing information. An apparatus for recording / reproducing information using a mechanical chassis, a medium transporting unit movably provided on the mechanical chassis between a medium loading / unloading position and a medium recording / reproducing position, and the medium transporting unit. Magnetic head cleaning means,
An optical pickup provided on the mechanical chassis for reading information on the optical recording surface of the medium, and a magnetic head provided on the moving path of the magnetic head cleaning means of the mechanical chassis for recording and reproducing information on the magnetic recording surface of the medium. Is.

According to a second aspect of the present invention, there is provided the recording / reproducing apparatus according to the first aspect, wherein an adhering matter removing portion for rubbing a cleaning surface of the magnetic head cleaning means is provided in a moving path of the magnetic head cleaning means of the mechanical chassis. It is what According to a third aspect of the present invention, in the recording / reproducing apparatus of the first or second aspect, the magnetic head cleaning means is
It is characterized in that it comprises an arm provided on the medium transfer means and a brush provided at the tip of the arm for rubbing the magnetic head.

A recording / reproducing apparatus according to a fourth aspect of the present invention is the apparatus according to the first aspect, wherein the tip of the brush is inclined in a direction from the medium loading / unloading position toward the medium recording / reproducing position. The recording / reproducing apparatus of claim 5 is the same as that of claim 3.
Alternatively, in the device of 4, the arm is made of an elastic body.

[0008]

According to the structure of the present invention, since the magnetic head cleaning means for cleaning the magnetic head when the medium transfer means is moved is provided, the dirt transferred from the medium to the magnetic head each time the medium is taken in and out. ， Can remove trash. According to the second aspect of the invention, since the adhering matter removing portion that rubs the cleaning surface of the magnetic head cleaning means is provided when the medium transporting means moves, the cleaning effect continues.

According to the third, fourth and fifth aspects, the magnetic head cleaning means is provided with a brush for rubbing the magnetic head at the tip of the arm, and the tip of the brush is used for recording / reproducing the medium from the medium take-in / out position. By tilting in the direction toward the position, the magnetic head is strongly cleaned at the initial stage of mounting the medium, and the arm is formed of an elastic body, so that the cleaning effect is improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 and 2 show the overall structure of a magnetic head of a recording / reproducing apparatus according to an embodiment of the present invention during cleaning. FIG. 1 is a plan view thereof, and FIG.
Is a side view thereof.

In the figure, 1 is a medium having an optical recording surface 1a capable of optically reproducing information, and a magnetic recording surface 1b capable of magnetically recording and reproducing information on the back surface thereof, and 2 is a medium receiving surface 2
1 is a tray (medium transfer means) configured to be movable in the direction of arrow A between the medium loading / unloading position of the medium 1 and the medium recording / reproducing position. The state of the withdrawal position is shown.

A mechanical chassis 3 guides the operation of the tray 2 and moves the tray 2 by a drive source (not shown). The mechanical chassis 4 receives and holds the medium 1, and a motor (not shown) directly connected to the medium 1 holds the medium 1. The mechanical chassis 3 has a turntable 4a for rotating the optical disk and an optical pickup 4b for optically reproducing information.
An optical reproducing unit 5 having two positions, a medium clamping position and a unclamping position, is sandwiched by the drive source (not shown) of the medium 1 with the turntable 4a, and is turned to the medium 1 by the attraction force of a magnet or the like. A clamper for transmitting the rotation of the table 4a, a clamp plate 6 for holding the clamper 5 rotatably and fixedly holding it on the mechanical chassis 3, and a guide shaft 9a.
With respect to the magnetic recording surface 1b of the medium 1, which is held by a head arm 8 urged in one direction by a spring 16 to perform magnetic recording and reproduction, and a guide shaft 9a. , 9b to be movable in the radial direction of the medium 1, driven by a motor 11 as a drive source from a gear 11a connected to the motor 11 via a rack portion 10a integrated with the carriage, and a head arm 8
In the radial direction of the medium 1.

Numeral 12 holds the motor 11 and the guide shafts 9a and 9b, and at the standby position of the magnetic head 7 (the magnetic head position in FIGS. 2 and 5), the head arm 8 is moved in the direction of separating the magnetic head 7 from the medium 1. A base having a cam portion 12a that works in conjunction with the horizontal movement of the head, and a head cleaning brush 14 at the tip of the base 13, which is rotatably installed around a support shaft 2b provided on the tray 2. The brush arm is biased clockwise by the spring 15 and the position thereof is regulated by the stopper 2c on the tray 2. The brush arm 13 and the brush 14 constitute magnetic head cleaning means.

Further, FIG. 3 shows an explanatory view of the internal structure of the medium 1. In the figure, 1c is a base material of the medium 1, 1d is an optical pit, 1e is a protective layer for the optical pit, 1f is a magnetic layer for magnetic recording, and 1g is a protective layer for the magnetic layer 1f. 4 and 5
1 is a plan view of the reproduction state of the medium 1 by the optical reproduction section 4 by retracting the tray 2 on which the medium 1 is placed into the recording / reproducing apparatus from the medium loading / unloading position of FIGS. And a side view is shown.

FIGS. 6 and 7 are plan views showing a state in which recording and reproduction are performed by the magnetic head 7 on the magnetic recording surface 1b on the back surface of the optical recording surface 1a of the medium 1 in the states of FIGS. 4 and 5. The figure and the side view are shown. FIG. 8 is a sectional view showing the states of the recording position and the standby position of the magnetic head 7. The magnetic recording / reproducing operation will be described. In the state shown in FIGS. 6 and 7, the magnetic head 7 attached to the head arm 8 is urged by the spring 16 in a state where the medium 1 is clamped and rotated by being sandwiched between the turntable 4a and the clamper 5 ( The magnetic recording surface 1b of the medium 1 is contacted by the arrow C (see FIG. 8) (see the solid line in FIG. 8), and the motor 11 drives the carriage 10 in the radial direction of the medium 1 through the carriage 10 (arrow D: see FIG. 8). The recording medium is moved while being position-controlled, and a concentric track is recorded and reproduced on the medium 1 by exchanging signals with the main body side (not shown). After the recording / reproducing operation is completed, the magnetic head 7 (simultaneously the head arm 8 and the carriage 10) is moved in the direction of arrow B (see FIG. 6) by driving the motor 11, and the cam portion 12a of the base 12 is at the magnetic head standby position.
The convex portion 8a on the head arm 8 is lifted on the slope of the magnetic head 7 and the magnetic head 7 separates from the medium 1 (see the phantom line in FIG. 8). At this time, the brush arm 13 is connected to the mechanical chassis 3
The position is regulated by the upper pin 3a.

Next, the operation of loading / unloading the medium 1 and the magnetic head cleaning operation in conjunction therewith will be described. In the magnetic recording / reproducing standby state shown in FIGS.
When the open operation is performed, the light reproducing unit 4 is lowered, and the clamp due to the sandwiching of the medium 1 by the turntable 4a and the clamper 5 is released, and then the tray 2 is ejected outward from the recording / reproducing apparatus, and the medium of FIGS. Move to the in / out position. At that time, the brush arm 13 is released from the position regulation by the pin 3a on the mechanical chassis 3, and the arm portion of the brush arm 13 is biased by the spring 15 so that the arm 2 of the brush arm 13 stops on the tray 2.
The brush 14 is rotated until it comes into contact with c, and the brush 14 takes a position corresponding to the magnetic head 7 on the standby position, and in cooperation with the movement of the tray 2, the brush 14 rubs the head surface for cleaning.

Next, by performing a closing operation from that state, the reverse operation to the above is performed, and while the tray 2 is being drawn in, the brush 14 cleans the surface of the magnetic head 7 at the standby position while recording / reproducing the medium 1. Insert it into the package,
The turntable 4a and the clamper 5 are sandwiched and clamped, and both the optical and magnetic recording / reproducing states are made. At this time, regarding the brush shape, the bristles may be planted vertically with respect to the brush arm 13. However, as shown in FIG. 9, the tip of the brush 14 is inclined in the direction from the medium loading / unloading position to the medium recording / reproducing position. , The contact pressure between the brush 14 and the cleaning surface of the magnetic head 7 increases when the medium 1 is placed on the tray 2 and pulled in to the medium recording / reproducing position.
The surface of the magnetic head 7 can be cleaned more strongly, and the cleaning effect is further improved.

Further, in FIG. 9, the position of the magnetic head 7 side is regulated by the regulating portion 6a on the clamp plate 6 so as not to escape, and the brush arm 13 is formed of an elastic molded product, so that the brush is formed. When the magnetic head 7 and the magnetic head 7 come into contact with each other, the head arm 8 is prevented from escaping to the right in the drawing by the restricting portion 6a, and the brush arm 13 bends in the direction of arrow E, and the elastic bending is applied to clean the magnetic head. The pressure of the brush 14 on the magnetic head 7 can be obtained without adding an additional biasing component.

The lower surface of the base 12 is utilized while the brush 14 is cleaning the surface of the magnetic head 7 and further pulling in the tray 2, or while the brush arm 13 is rotated by the pin 3a on the mechanical chassis 3. The convex portion 12b serving as an adhered matter removing portion is formed on the movement path of the brush of FIG.
By adopting a configuration in which the dirt and the like reflected on the brush from the head surface in 2b is scraped off, the dirt and the like are not deposited on the brush 14 and the cleaning effect of the brush 14 can be maintained.

According to the recording / reproducing apparatus having the above-described structure, the brush 14 whose tip is inclined in the direction from the medium loading / unloading position to the medium recording / reproducing position is interlocked with the movement of the tray 2 on which the medium 1 is placed. By cleaning the surface of the magnetic head 7 that performs magnetic recording and reproduction on the medium 1 in the standby state by the pressure due to the elasticity of the brush arm 13 made of a molded product, the medium 1 is removed every time the medium 1 is taken in and out.
It is possible to remove dirt, dust, etc. transferred from the magnetic head 7 to the magnetic head 7. Therefore, even when contact-type magnetic recording / reproducing is performed on the medium 1 having no dustproof case, deterioration of the magnetic head characteristics due to dirt can be prevented, the magnetic recording / reproducing characteristics can be stabilized, and the space between the medium 1 and the magnetic head 7 can be prevented. Effects such as prevention of abnormal noise and scratches can be obtained at low cost with a simple mechanical structure.

Further, since the brush 14 is inclined so as to perform stronger cleaning when the medium 1 is mounted, the surface of the magnetic head 7 is cleaned at the initial stage of mounting the medium, which has a cleaning effect. Further improve. Further, by applying elastic bending, the pressure of the brush 14 on the magnetic head 7 at the time of cleaning the magnetic head can be obtained without adding an additional biasing component.

Further, the dirt and dust transferred from the magnetic head 7 to the brush 14 are interlocked with the movement of the tray 2 and scraped off by the convex portion 12b provided on the base 12 to maintain the cleaning effect of the brush 14. You can In the case of the above-described embodiment, the magnetic recording / reproducing unit is formed on the base 12, and the base 12 is fixed to the mechanical chassis 3 via the clamp plate 6. Depending on the conditions, the base 12 may be directly fixed to the light reproducing unit 4.

[0023]

According to the first aspect of the invention, since the magnetic head cleaning means for cleaning the magnetic head when the medium transport means is moved is provided, the medium is transferred from the medium to the magnetic head each time the medium is operated. It can remove dirt and dust. Therefore, even when contact-type magnetic recording / reproducing is performed on a medium without a dustproof case, deterioration of the magnetic head characteristics due to dirt can be prevented, the magnetic recording / reproducing characteristics can be stabilized, and noise and noise between the medium and the magnetic head can be prevented. The effect of preventing scratches is obtained.

According to the second aspect of the present invention, since the adhering matter removing portion for rubbing the cleaning surface of the magnetic head cleaning means is provided when the medium transfer means is moved, the effect of sustaining the cleaning effect can be obtained. According to the third, fourth and fifth aspects, the magnetic head cleaning means is provided with a brush for rubbing the magnetic head at the tip of the arm, and the tip of the brush moves from the medium take-in / out position to the medium recording / reproducing position. By tilting in the direction, the magnetic head is strongly cleaned at the initial stage of mounting the medium, and the arm is formed of an elastic body, so that the cleaning effect is improved.

[Brief description of drawings]

FIG. 1 is a plan view of a recording / reproducing apparatus according to an embodiment of the present invention when a magnetic head is cleaned.

FIG. 2 is a side view of the recording / reproducing apparatus according to the embodiment of the present invention when the magnetic head is cleaned.

FIG. 3 is an explanatory diagram of an internal structure of a medium used in an embodiment of the present invention.

FIG. 4 is a plan view of a recording / reproducing apparatus according to an embodiment of the present invention in an optical reproducing state.

FIG. 5 is a side view of the recording / reproducing apparatus of the embodiment of the present invention in an optical reproducing state.

FIG. 6 is a plan view of a magnetic recording / reproducing state of the recording / reproducing apparatus of an embodiment of the present invention.

FIG. 7 is a side view showing a magnetic recording / reproducing state of the recording / reproducing apparatus according to the embodiment of the present invention.

FIG. 8 is a sectional view showing a state of a recording position and a standby position of the magnetic head of the recording / reproducing apparatus of the embodiment of the present invention.

FIG. 9 is an enlarged view of a magnetic head cleaning brush installation portion of the recording / reproducing apparatus in one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 medium 2 tray (medium transfer means) 3 mechanical chassis 4 optical reproducing section 7 magnetic head 12 base 12b convex section (adhesion removing section) 13 brush arm 14 brush (magnetic head cleaning means)

Claims (5)

[Claims] 1. A recording / reproducing apparatus for recording / reproducing information using a recording medium having an optical recording surface capable of optically reproducing information and a magnetic recording surface capable of magnetically recording / reproducing information. A mechanical chassis, a medium transporting unit provided to the mechanical chassis so as to be movable between a medium loading / unloading position and a medium recording / reproducing position, a magnetic head cleaning unit provided in the medium transporting unit, and a mechanical chassis. Recording comprising an optical pickup for reading information on the optical recording surface of the medium, and a magnetic head provided on the moving path of the magnetic head cleaning means of the mechanical chassis for recording and reproducing information on the magnetic recording surface of the medium. Playback device. 2. The recording / reproducing apparatus according to claim 1, wherein an adhering matter removing portion that scrapes a cleaning surface of the magnetic head cleaning means is provided in a moving path of the magnetic head cleaning means of the mechanical chassis. 3. The recording / reproducing apparatus according to claim 1, wherein the magnetic head cleaning means comprises an arm provided on the medium transfer means, and a brush provided at the tip of the arm for rubbing the magnetic head. . 4. The recording / reproducing apparatus according to claim 3, wherein the tip of the brush is inclined in a direction from the medium loading / unloading position to the medium recording / reproducing position. 5. The recording / reproducing apparatus according to claim 3, wherein the arm is made of an elastic body.