JP3819455B2 - Recording / playback device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a recording / reproducing apparatus using a disc-shaped recording medium having an optical recording surface capable of optically reproducing information and a magnetic recording surface capable of magnetically recording / reproducing information.
[0002]
[Prior art]
In recent years, as a recording / reproducing apparatus, an optical reproduction-only apparatus using a medium that can supply a large amount of information at a low cost, as represented by a CD-ROM, has become widespread. There is a need to add functionality.
Thus, a method of performing magnetic recording with a magnetic head on the back surface of the optical recording surface has been proposed.
[0003]
[Problems to be solved by the invention]
However, since the recording / reproducing apparatus of the proposed example as described above uses a medium such as a dustproof CD that does not have a special case, when performing contact type recording / reproducing, dirt on the medium is transferred to the magnetic head, and magnetic recording is performed. There were problems such as deterioration of head characteristics, scratches on the medium, and generation of abnormal noise.
[0004]
SUMMARY OF THE INVENTION In view of the above-described conventional problems, the present invention provides a recording / reproducing apparatus capable of preventing deterioration of magnetic head characteristics due to dirt even when performing contact-type magnetic recording / reproducing with a medium having no dustproof case. It is the purpose.
[0005]
[Means for Solving the Problems]
The recording / reproducing apparatus according to claim 1 uses a recording medium having an optical recording surface capable of optically reproducing information and a magnetic recording surface capable of magnetically recording / reproducing information, for recording / reproducing information. A playback device,
Mechanical chassis,
Medium transfer means provided on the mechanical chassis so as to be movable between a medium loading / unloading position and a medium recording / reproducing position;
A magnetic head cleaning means comprising: an arm rotatably disposed around a support shaft provided in the medium transfer means; and a brush for rubbing a magnetic head for recording and reproducing the magnetic recording surface at the tip of the arm ;
An optical pickup provided in the mechanical chassis for reading information on an optical recording surface of the medium;
Provided in the mechanical chassis, the brush is restricted from the position of the magnetic head in the medium loading / unloading position to a position other than the magnetic head in the medium recording / reproducing position by rotating the arm around the support shaft. Position regulating means to perform,
An adhering matter removing unit that rubs the brush of the head cleaning unit while the brush is rotated by the arm is provided.
[0007]
The recording / reproducing apparatus according to claim 2 is characterized in that, in the apparatus of claim 1, the tip of the brush is inclined in a direction from the medium loading / unloading position to the medium recording / reproducing position.
A recording / reproducing apparatus according to a third aspect is the apparatus according to the first aspect , wherein the arm is made of an elastic body.
[0008]
[Action]
According to the configuration of the first aspect, since the magnetic head cleaning means for cleaning the magnetic head is provided when the medium transfer means is moved, dirt and dust transferred from the medium to the magnetic head each time the medium is put in and out. Can be removed.
In addition , since the deposit removing unit that rubs the cleaning surface of the magnetic head cleaning unit during movement of the medium transfer unit is provided, the cleaning effect is sustained.
[0009]
According to the second and third aspects of the present invention, the magnetic head cleaning means includes a brush for rubbing the magnetic head at the tip of the arm, and the tip of the brush is directed in a direction from the medium loading / unloading position toward the medium recording / reproducing position. By tilting, the magnetic head is strongly cleaned in the initial stage of mounting the medium, and the arm is formed of an elastic body, thereby improving the cleaning effect.
[0010]
【Example】
An embodiment of the present invention will be described with reference to FIGS.
FIG. 1 and FIG. 2 show the overall structure of a recording / reproducing apparatus according to an embodiment of the present invention when the magnetic head is cleaned, FIG. 1 is a plan view thereof, and FIG. 2 is a side view thereof.
[0011]
In the figure, reference numeral 1 denotes 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 denotes a medium 1 on a medium receiving surface 2a. 1 is a tray (medium transfer means) configured to be movable in the direction of arrow A between the medium loading / unloading position and the medium recording / reproducing position of medium 1, and FIGS. Is shown.
[0012]
Reference numeral 3 denotes a mechanical chassis that guides the operation of the tray 2 and moves the tray 2 by a drive source (not shown), 4 receives and holds the medium 1, and rotates the medium 1 by a directly connected motor (not shown). An optical reproducing unit 5 having a turntable 4a and an optical pickup 4b for optically reproducing information, and having two positions of a medium clamping position and a clamp releasing position by a drive source (not shown) of the mechanical chassis 3 A clamper 6 sandwiches the medium 1 with the turntable 4a and transmits the rotation of the turntable 4a to the medium 1 with an attractive force such as a magnet. A clamper 6 rotatably holds the clamper 5 and is fixedly held on the mechanical chassis 3. The clamp plate 7 is rotatably provided with respect to the guide shaft 9a, is held by the head arm 8 biased in one direction by a spring 16, and contacts the magnetic recording surface 1b of the medium 1 to perform magnetic recording / reproduction. A magnetic head 10 is a carriage that is guided by guide shafts 9a and 9b and configured to be movable in the radial direction of the medium 1. A rack unit 10a integrated with the carriage is connected from a gear 11a connected to the motor 11 using the motor 11 as a drive source. To move the head arm 8 in the radial direction of the medium 1.
[0013]
Reference numeral 12 denotes a motor 11 and guide shafts 9a and 9b. At the standby position of the magnetic head 7 (the magnetic head position in FIGS. 2 and 5), the horizontal direction of the head arm 8 extends away from the medium 1. A base having a cam portion 12a acting in conjunction with the moving operation of the head 13, a head cleaning brush 14 is formed at the tip, and is installed rotatably about a support shaft 2b provided on the tray 2, and a spring 15 Is a brush arm that is urged clockwise by the stopper 2c on the tray 2, and the brush arm 13 and the brush 14 constitute magnetic head cleaning means.
[0014]
FIG. 3 is an explanatory diagram 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 show that the tray 2 on which the medium 1 is placed is drawn into the recording / reproducing apparatus from the medium loading / unloading position shown in FIGS. 1 and 2 to the medium recording / reproducing position. The top view and side view of the reproduction | regeneration state are shown.
[0015]
FIGS. 6 and 7 are a plan view and a side view of the state in which recording / reproduction is performed on the magnetic recording surface 1b on the back surface of the optical recording surface 1a of the medium 1 by the magnetic head 7 in the states of FIGS. The figure is shown. FIG. 8 is a cross-sectional view showing the recording position and standby position of the magnetic head 7.
The magnetic recording / reproducing operation will be described. 6 and 7, the magnetic head 7 attached to the head arm 8 is sandwiched between the turntable 4a and the clamper 5 so that the medium 1 is clamped and rotated. An arrow C (see FIG. 8) contacts the magnetic recording surface 1b of the medium 1 (see a solid line in FIG. 8), and the motor 11 drives the radial direction of the medium 1 via the carriage 10 (arrow D: see FIG. 8). The concentric tracks are recorded and reproduced on the medium 1 by exchanging signals with the main body (not shown). After the recording / reproducing operation is completed, the magnetic head 7 (at the same time, the head arm 8 and the carriage 10) is moved in the arrow B direction (see FIG. 6) by driving the motor 11, and the cam portion 12a of the base 12 is moved to the magnetic head standby position. The convex portion 8a on the head arm 8 is lifted on the slope, and the magnetic head 7 moves away from the medium 1 (see the imaginary line in FIG. 8). At this time, the position of the brush arm 13 is regulated by the pin 3 a on the mechanical chassis 3.
[0016]
Next, the operation for inserting and removing the medium 1 and the magnetic head cleaning operation associated therewith will be described. In the magnetic recording / reproducing standby state shown in FIGS. 6 and 7, by performing the opening operation, the optical reproducing unit 4 is lowered, the clamp by the sandwiching of the medium 1 by the turntable 4a and the clamper 5 is released, and then the tray 2 is recorded and reproduced. The sheet is discharged outward from the apparatus and moved to the medium loading / unloading position shown in FIGS. At that time, the brush arm 13 is released from the position restriction by the pin 3 a on the mechanical chassis 3, and is rotated until the arm portion of the brush arm 13 abuts against the stopper 2 c on the tray 2 by the urging force of the spring 15. 14 takes a position corresponding to the magnetic head 7 on the standby position, and the brush 14 rubs and cleans the head surface in conjunction with the movement of the tray 2.
[0017]
Next, a reverse operation is performed by performing a closing operation from that state, and the medium 1 is moved into the recording / reproducing apparatus while the surface of the magnetic head 7 at the standby position is cleaned with the brush 14 while the tray 2 is being pulled. The optical disk is inserted and clamped between the turntable 4a and the clamper 5 to shift to a state where both optical and magnetic recording and reproduction are possible. At this time, the brush shape may be implanted vertically with respect to the brush arm 13, but as shown in FIG. 9, the tip of the brush 14 is inclined from the medium loading / unloading position toward the medium recording / reproducing position. When the medium 1 is placed on the tray 2 and pulled to the medium recording / reproducing position, the contact pressure between the brush 14 and the cleaning surface of the magnetic head 7 increases, and the surface of the magnetic head 7 can be more strongly cleaned, resulting in a cleaning effect. It gets even better.
[0018]
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 made of a molded product having elasticity, whereby the brush 14 and the magnetic When the head 7 comes into contact, the head arm 8 is prevented from escaping rightward in the drawing by the restricting portion 6a, the brush arm 13 is bent in the direction of arrow E, and the elastic deflection is applied to the brush 14 at the time of magnetic head cleaning. The pressure on the magnetic head 7 can be obtained without adding a separate biasing component.
[0019]
Further, the brush 14 is used to draw the tray 2 after cleaning the surface of the magnetic head 7 or while the brush arm 13 is rotated by the pin 3 a on the mechanical chassis 3. By constructing a convex portion 12b as an adhering matter removing portion on the movement locus and scraping off the dirt and the like reflected on the brush from the head surface by this convex portion 12b, dirt and the like are accumulated on the brush 14. Therefore, the cleaning effect of the brush 14 can be maintained.
[0020]
According to the recording / reproducing apparatus configured as described above, the brush 14 whose tip is inclined in the direction from the medium loading / unloading position toward the medium recording / reproducing position in conjunction with the movement of the tray 2 on which the medium 1 is placed is formed from the molded product. By cleaning the surface of the magnetic head 7 that performs magnetic recording / reproducing on the medium 1 with the pressure generated by the elasticity of the brush arm 13 in the standby state, the medium 1 is moved from the medium 1 to the magnetic head 7 each time the medium 1 is put in and out. Transferred dirt and dust can be removed. Therefore, even when contact-type magnetic recording / reproduction is performed on the medium 1 without the dustproof case, the deterioration of the magnetic head characteristics due to contamination can be prevented, the magnetic recording / reproduction characteristics can be stabilized, and the medium 1 and the magnetic head 7 can be stabilized. Effects such as prevention of abnormal noise and scratches can be obtained at low cost with a simple mechanical configuration.
[0021]
In addition, since the brush 14 is inclined so as to clean more strongly when the medium 1 is mounted, the surface of the magnetic head 7 is cleaned at the initial stage of the medium mounting, and the cleaning effect is further improved. To do.
Further, it is possible to obtain the pressure of the brush 14 against the magnetic head 7 at the time of cleaning the magnetic head by applying elastic bending without adding a separate urging component.
[0022]
Further, the dirt and dust transferred from the magnetic head 7 to the brush 14 are scraped off by the convex portion 12b provided on the base 12 in conjunction with the movement of the tray 2, whereby the cleaning effect of the brush 14 can be maintained.
In the embodiment, the magnetic recording / reproducing unit is configured on the base 12, and the base 12 is fixed to the mechanical chassis 3 via the clamp plate 6. Depending on conditions, the base 12 may be directly fixed to the optical reproducing unit 4.
[0023]
【The invention's effect】
According to the configuration of the first aspect, since the magnetic head cleaning means for cleaning the magnetic head is provided when the medium transfer means is moved, dirt and dust transferred from the medium to the magnetic head each time the medium is put in and out. Can be removed. Therefore, even when contact-type magnetic recording / reproducing is performed on a medium without a dustproof case, it is possible to prevent the magnetic head characteristics from being deteriorated due to dirt, to stabilize the magnetic recording / reproducing characteristics, and to detect abnormal noise between the medium and the magnetic head. The effect that a damage | wound can be prevented is acquired.
[0024]
In addition , since the deposit removing unit that rubs the cleaning surface of the magnetic head cleaning unit during movement of the medium transfer unit is provided, an effect that the cleaning effect is sustained can be obtained.
According to the second and third aspects of the present invention, the magnetic head cleaning means includes a brush for rubbing the magnetic head at the tip of the arm, and the tip of the brush is directed in a direction from the medium loading / unloading position toward the medium recording / reproducing position. By tilting, the magnetic head is strongly cleaned in the initial stage of the medium mounting, and the effect of improving the cleaning effect is obtained by forming the arm with an elastic body.
[Brief description of the drawings]
FIG. 1 is a plan view of a recording / reproducing apparatus according to an embodiment of the present invention during magnetic head cleaning.
FIG. 2 is a side view of the recording / reproducing apparatus according to the embodiment of the present invention during magnetic head cleaning.
FIG. 3 is an explanatory diagram of the internal structure of a medium used in one embodiment of the present invention.
FIG. 4 is a plan view of an optical reproduction state of a recording / reproducing apparatus according to an embodiment of the present invention.
FIG. 5 is a side view of the optical reproducing state of the recording / reproducing apparatus according to the embodiment of the present invention.
FIG. 6 is a plan view showing a magnetic recording / reproducing state of the recording / reproducing apparatus according to the 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 cross-sectional view showing the recording position and standby position of the magnetic head of the recording / reproducing apparatus in the embodiment of the invention.
FIG. 9 is an enlarged view of a magnetic head cleaning brush installation portion of a recording / reproducing apparatus according to an embodiment of the present invention;
[Explanation of symbols]
1 Medium 2 Tray (medium transfer means)
3 Mechanical chassis 4 Optical reproducing unit 7 Magnetic head 12 Base 12b Convex part (attachment removal part)
13 Brush arm 14 Brush (magnetic head cleaning means)

Claims (3)

A recording / reproducing apparatus for recording / reproducing information using an optical recording surface capable of optically reproducing information and a recording medium having a magnetic recording surface capable of magnetically recording / reproducing information,
Mechanical chassis,
Medium transfer means provided on the mechanical chassis so as to be movable between a medium loading / unloading position and a medium recording / reproducing position;
A magnetic head cleaning means comprising: an arm rotatably disposed around a support shaft provided in the medium transfer means; and a brush for rubbing a magnetic head for recording and reproducing the magnetic recording surface at the tip of the arm ;
An optical pickup provided in the mechanical chassis for reading information on an optical recording surface of the medium;
Provided in the mechanical chassis, the brush is restricted from the position of the magnetic head in the medium loading / unloading position to a position other than the magnetic head in the medium recording / reproducing position by rotating the arm around the support shaft. Position regulating means to perform,
A recording / reproducing apparatus comprising: an adhering substance removing unit that rubs the brush of the head cleaning unit while the brush is rotated by the arm . The tip of the brush, the recording and reproducing apparatus according to claim 1, wherein the tilted toward the medium recording position from the medium out position. Arm recording reproducing apparatus according to claim 1, characterized in that it consists of elastic material.

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