JP2001195764A - Optical recording device, optical head used therefor and device for cleaning recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record, reproduce or erase data more stably than usual with respect to a recording medium where a lubricant layer is formed. SOLUTION: An optical head 40 included in an irradiation optical system 20 is provided with a near-field light generating means 41 and an adsorption mechanism part 42. This optical recording device is constituted so that data are recorded, reproduced or erased by permeating near-field light through the minute opening formed on the bottom side of the head 40 in such a state that the bottom side of the head 40 is in contact with the lubricant layer formed on the top face side of a recording medium 9. The part 42 fit to the side face part of the means 41 shows the action to adsorb dust contained in the lubricant layer and remove dust from the inside of the lubricant layer when the medium 9 is rotated in the prescribed direction. As a result, the near-field light is not obstructed by dust so that data can be stably recorded, reproduced or erased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical recording apparatus for recording, reproducing or erasing data on a recording medium having a lubricant layer formed on a recording surface, an optical head used therefor, and such recording. The present invention relates to a recording medium cleaning device for cleaning a medium.

[0002]

2. Description of the Related Art In recent years, near-field light, which is not restricted by the diffraction limit of light, is used to optically record data on a recording medium at a spot smaller than the wavelength of light or to reproduce data from a recording medium. Field light recording is attracting attention. In the recording method using near-field light, since a light spot for recording can be realized with a small diameter, high-density data recording becomes possible.

Here, the near-field light used for optical recording has a very low light intensity, and the light intensity decreases as the distance from the near-field light seeping-out position increases. Therefore, in order to perform stable data recording, reproduction, or erasing using near-field light, the distance between the recording surface of the recording medium and the near-field light seeping position is fixed within the near-field area. It is necessary to control so that

[0004] In JP-A-11-3534,
There is disclosed a technique for making the above-mentioned interval constant by bringing a near-field light generating means for generating near-field light into contact with a recording medium via a lubricant. According to this conventional technique, the distance between the near-field light generating means and the recording medium can be stably maintained by the surface tension or intermolecular force of the lubricant.

[0005]

However, in the case of an optical recording apparatus using near-field light, if the near-field light generating means and the recording medium are brought into contact with each other via a lubricant as described above, Since a lubricant is always interposed between the field light generating means and the recording medium, there is a problem that an optical path of light serving as recording light or the like is blocked by contamination of the lubricant. Since optical recording using near-field light or the like uses extremely weak light as described above, dust contained in the lubricant reduces the amount of light that reaches the recording surface of the recording medium, and becomes unusable during recording. Sufficient data is recorded, and a reproduction error occurs during reproduction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a more stable recording, reproducing, or erasing of data on a recording medium having a lubricant layer formed on a recording surface. It is an object of the present invention to provide an optical recording apparatus capable of performing the above-mentioned, an optical head used for the same, and a recording medium cleaning apparatus for cleaning such a recording medium.

[0007]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, data is recorded, reproduced or erased on or from a recording medium having a lubricant layer formed on a recording surface. An optical recording apparatus for performing near-field light generation means for generating near-field light on the recording surface in contact with the lubricant layer, and suction means for absorbing dust contained in the lubricant layer And

According to a second aspect of the present invention, in the optical recording apparatus according to the first aspect, the optical recording apparatus further comprises a voltage applying means for applying a predetermined voltage to the attracting means, wherein the attracting means comprises: The dust is attracted by an electrostatic action by means of an applied voltage by means.

According to a third aspect of the present invention, there is provided an optical head used in an optical recording apparatus for recording, reproducing or erasing data on a recording medium having a lubricant layer formed on a recording surface, A near-field light generating means for generating near-field light on the recording surface in contact with the lubricant layer; and a dust disposed in the near-field light generating means integrated with the near-field light generating means. And an adsorbing means for adsorbing.

According to a fourth aspect of the present invention, there is provided a recording medium cleaning apparatus for cleaning a recording medium having a lubricant layer formed on a recording surface, wherein the means for holding the recording medium and the lubricant are provided. Adsorbing means for adsorbing dust contained in the layer.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic configuration diagram of an optical recording apparatus 1 according to an embodiment of the present invention. In FIG. 1, a three-dimensional coordinate system XYZ is defined.

The optical recording apparatus 1 includes a rotating mechanism 5 for rotating the recording medium 9 in a predetermined direction while holding a disk-shaped recording medium 9 such as an optical disk, and a recording light or the like at an appropriate position on the recording medium 9. An arm driving mechanism 2 for moving the recording medium 9, a controller 3 for providing a driving control signal to the arm driving mechanism 2 and the rotating mechanism 5, and a signal processing unit 4 for processing a recording signal or a reproduction signal for the recording medium 9. It is configured with.

The rotation mechanism section 5 includes a rotation drive section 51 and a rotation member 52. The rotation drive section 51 rotates the rotation member 52 in a predetermined direction based on a drive control signal given from the controller 3. The rotating member 52 has a structure for holding the recording medium 9 at a predetermined position, and performs a rotating operation integrally with the recording medium 9.

The arm drive mechanism 2 includes a drive section 18, an arm section 19, and an irradiation optical system 20. Then, near-field light, such as recording light or reproduction light, is guided from the irradiation optical system 20 to the recording medium 9.

The irradiating optical system 20 is disposed at the tip of the arm 19, and uses the light for erasing, recording, and reading (reproducing) signals on the recording surface of the recording medium 9 as near-field light. Is applied to an appropriate position on the recording surface. The bottom surface of the irradiation optical system 20 (that is, the surface on which the near-field light oozes out) is configured to be in contact with the surface of the recording medium 9 so as to perform data recording and reproduction.

The arm unit 19 is configured to be able to advance and retreat in the radial direction of the recording medium 9 (that is, in the X direction) by the driving unit 18. The controller 3 sends a driving control signal to the driving unit 18. By giving the arm part 19
, The near-field light irradiation position by the irradiation optical system 20 is controlled. The drive mechanism of the arm drive mechanism 2 is not limited to a configuration in which the drive mechanism advances and retreats in a direction of the rotation center of the recording medium 9, but may be a configuration in which the arm mechanism advances and retreats while turning.

The signal processing section 4 supplies data to be recorded on the recording medium 9 to a laser drive circuit and a shutter drive circuit (not shown) in the controller 3, and read data (reproduced data) detected by a reproducing optical system. Has been received via the controller 3 and output to other data processing devices.

Although not shown in FIG. 1, the reproducing optical system is provided on the back side of the recording medium 9 and advances and retreats in the center direction of the recording medium 9 in conjunction with the reciprocating operation of the irradiation optical system 20. In addition, data is reproduced by detecting a transmitted light component to the back side of the recording medium 9.

FIG. 2 is a schematic diagram showing the irradiation optical system 20 and the reproduction optical system 30 in the optical recording apparatus 1.

The irradiation optical system 20 includes a laser light source 21 composed of a He—Ne laser, a semiconductor laser, or the like, and emitting a laser beam having a wavelength λ1 for recording and reproduction.
A collimator lens 22 for collimating the laser light, a condensing lens 23 for condensing the collimated light at a predetermined condensing position, and a near-field light of a minute spot serving as recording light and reproduction light. And an optical head 40 that oozes out on the recording surface side. The laser light source 21, the collimator lens 22, the condenser lens 23, and the optical head 40 are all held by a head holding mechanism 20a so as to maintain a predetermined positional relationship.
It is attached to the tip. Note that the bottom surface side of the optical head 40 is in contact with the front surface side of the recording medium 9.

The reproducing optical system 30 includes a condenser lens 31.
And the light receiving element 32, and the recording medium 9
Is transmitted to the light receiving element 32 by the condenser lens 31. Therefore, the light receiving element 32 is configured to be able to detect the light intensity according to the transmittance of the near-field light. Both the condenser lens 31 and the light receiving element 32 are held by a head holding mechanism 30 a so as to maintain a predetermined positional relationship, and advance and retreat toward the center of the recording medium 9 integrally with the irradiation optical system 20.
Then, the light intensity detected by the light receiving element 32 is photoelectrically converted and applied to the controller 3 side, and the data recorded on the recording medium 9 is reproduced.

Although not shown in FIG. 2,
In the irradiation optical system 20, an erasing light source (laser light source that emits light of the wavelength λ2) for erasing data recorded on the recording medium 9 and an erasing optical system may be separately arranged. Good.

At the time of recording in such an optical recording apparatus 1, a laser beam having a predetermined light intensity (light power) is emitted from the laser light source 21, and the recording medium 9 is transmitted from the optical head 40.
Near-field light, which becomes recording light, oozes out on the recording surface side. Unlike near-field light, this near-field light exists only in the near-field region at the seeping-out position, but by arranging the recording surface of the recording medium 9 in the near-field region, the minute spot High-density optical recording using near-field light is realized.

At the time of reproduction, the laser light source 21 emits a weaker laser beam than at the time of recording.
The near-field light serving as the reproduction light oozes more toward the recording surface side of the recording medium 9. When the near-field light reaches the recording surface, it becomes a propagation light, passes through the recording medium 9, and is guided to the reproducing optical system 30 arranged on the back surface side. As a result, the light receiving element 32 detects the light intensity of the transmittance according to the data recorded on the recording surface of the recording medium 9, and the recorded data can be reproduced.

Next, the optical head 4 in the irradiation optical system 20
0 will be described. FIG. 3 is a cross-sectional view illustrating the structure of the optical head 40. As shown in FIG.
Is configured to include near-field light generating means 41 for generating near-field light for recording and reproduction, and an adsorption mechanism 42 disposed on a side of the near-field light generating means 41.

The near-field light generating means 41 has an entrance opening 412 having an opening diameter of about λ1 on the upper surface side (light source side) of the plate-shaped main body 411, for example. The opening diameter is gradually reduced toward the lower surface of the main body 411 (the bottom surface facing the recording medium 9).
As a result, an emission aperture 413 having a small aperture diameter (an aperture diameter smaller than the wavelength λ1) is formed on the lower surface side of the near-field light generating means 41. Then, when the laser beam L1 is incident from the entrance aperture 412 by the condenser lens 23, it oozes as the near-field light L2 from the exit aperture 413 formed on the bottom side of the near-field light generating means 41. Normally, propagating light is not emitted from an opening smaller than the wavelength of light, and the near-field light L2, which is non-propagating light, exists in a state of seeping into the near-field region of the emission opening 413. When the lower surface having the emission opening 413 contacts the recording medium 9, the near-field light L <b> 2 leaching from the emission opening 413 can be made to reach the recording layer of the recording medium 9 satisfactorily. I have.

The suction mechanism 42 is formed of a stainless steel material, and the main body 41 of the near-field light generating means 41.
1 has a mesh structure in which a large number of small-diameter (for example, about 1 μm diameter) holes are formed on the surface side thereof. Further, the suction mechanism section 42 is connected to a power supply section 61 via a switch 62. When the switch 62 is closed, a predetermined voltage V is applied to the suction mechanism section 42. The switch 62 and the power supply 61 function as voltage applying means and are provided on the controller 3 side. The controller 3 controls whether or not to apply an applied voltage to the suction mechanism 42. ing.

FIG. 4 is a diagram showing the positional relationship between the optical head 40 and the recording medium 9 as viewed from above the recording medium 9. As shown in FIG. 4, the suction mechanism section 42 having the mesh structure in the optical head 40 is provided downstream of the near-field light generating means 41 with respect to the rotation direction of the recording medium 9.

Next, the structure of the recording medium 9 will be described. FIG. 5 is a sectional view showing the structure of the recording medium 9. The recording medium 9 has a glass substrate 91, a recording layer 92, a protective layer 93, and a lubricant layer 94. First, a material in which a photochromic dye and a polymethyl methacrylate resin are mixed at a weight ratio of 1: 1 is applied to the upper surface side of the glass substrate 91 by spin coating, and a layer thickness of about 15
A 0 nm recording layer 92 is formed. Then, the recording layer 92
A protective layer 93 made of silicon dioxide and having a thickness of about 20 nm is formed on the upper surface side by sputtering.
A lubricant layer 94 made of fluoroalkyl ethanol and having a thickness of about 10 nm is formed on the upper surface side of 3 by spin coating. As a result, the recording medium 9 is configured to form a data recorded state and an unrecorded state by the photochromic material used for the recording layer 92.

FIG. 6 is a diagram showing the structural formula of the photochromic material and the photochromic reaction caused by the substance. The photochromic material is in the first state, state A
When the light of the wavelength λ1 is absorbed in the above, the state changes to the state B which is the second state. In state A, the absorbance of light of wavelength λ1 is large, and in state B, the absorbance of light of wavelength λ2 is large. Then, in the state B, the wavelength λ2
, The photochromic material returns to the first state, state A.

Therefore, when the state A shown in FIG. 6 is an unrecorded state and the state B is a recorded state, the recording medium 9 is irradiated by irradiating the recording medium 9 with light having a wavelength λ1 as recording light.
This makes it possible to change the state of the photochromic material included in No. 2 to a recording state.

Here, a change from the state A to the state B or a change from the state B to the state A takes a wavelength λ in each state.
The rate of change when the photochromic material changes to each state is different depending on the light intensity (light power) of light irradiated in each state. .

For this reason, if the intensity of light applied to the photochromic material is high, a change from state A to state B occurs and good recording is performed. On the other hand, if the intensity of light is weak, The change from the state A to the state B is suppressed. Therefore, in the optical recording apparatus 1 having the above configuration, the light intensity of the laser light from the laser light source 21 is set so as to be sufficiently large at the time of recording so that recording can be performed satisfactorily. It is configured so that a laser beam of weak light intensity is emitted so as not to change.

Then, for such a recording medium 9,
The optical recording device 1 is configured to contact the bottom surface side of the optical head 40 where the emission opening 413 is formed via the lubricant layer 94, and perform optical recording or optical reproduction using the near-field light L2.

In the optical recording apparatus 1 having the above-described configuration, the lubricant layer 94 is provided on the surface side of the recording medium 9, and dust entering from the outside and dust generated by operating each mechanism are generated. It will adhere to the lubricant layer 94. If such dust is left as it is, the near-field light, which is a minute spot, is blocked by the lubricant layer 94 and the recording layer 9
2 may not be reached, and as a result, a recording error or a reproduction error may occur.

In the optical head 40 of this embodiment, a suction mechanism 42 is attached to the side surface of the near-field light generating means 41, and the suction mechanism 42 suctions dust contained in the lubricant layer. It functions as an adsorption means for removal. That is, the suction mechanism unit 42 sucks and removes dust mixed into the lubricant layer 94 and removes the dust from the lubricant layer 94, whereby the data recording, the data reproduction, and the data erasing are performed on the recording medium 9. That is, the irradiated near-field light appropriately reaches the recording layer 92.

The suction mechanism section 42 is configured so that a predetermined voltage V can be applied between the power supply section 61 and the ground level. However, regardless of whether the voltage V is applied to the suction mechanism section 42 or not. Thus, dust can be removed from the lubricant layer 94. When applying the applied voltage V,
This has a unique effect that the dust removing action from the lubricant layer 94 can be increased as compared with the case where no lubricant is provided. When dust is removed from the lubricant layer 94 with the voltage V applied to the suction mechanism section 42, the lubricant layer 94
Dust that is charged inside can be satisfactorily removed by the electrostatic action, so that it is considered that a greater dust removal effect can be obtained than when no voltage is applied.

Here, the present applicant conducted an experiment in which the recording medium 9 was actually rotated, and the reproduction optical system 30 detected the transmittance of near-field light to verify the dust adsorption effect by the adsorption function 42. went. The details of the experiment and the results will be described below.

In this experiment, in the above configuration, the diameter of the entrance aperture 412 in the near-field light generating means 41 was set to about 6
00 nm, and the opening diameter of the exit aperture 413 is about 200 nm.
The laser light source 21 is configured to emit laser light having a wavelength λ1 = 633 nm.

First, in the initial stage of the experiment, the recording medium 9 was set to the data recording state, the recording medium 9 was irradiated with near-field light during reproduction, and the transmitted light intensity was measured by the reproduction optical system 30. The transmitted light intensity at this time is defined as Ir.

Next, the entire surface of the recording medium 9 is irradiated with ultraviolet light (laser light having a wavelength of λ2) as erasing light to make the entire surface unrecorded. And the transmitted light intensity was measured by the reproducing optical system 30. The transmitted light intensity at this time is defined as Io. If the transmittance at the initial stage of the experiment is To, the transmittance To is T
It is obtained as o = Io / Ir.

Thereafter, the recording medium 9 was actually rotated at a speed of about 1000 rpm in a normal laboratory, and near-field light during reproduction was irradiated every 10 minutes to measure the transmitted light intensity. For example, assuming that the transmitted light intensity after x minutes is Ix, the transmittance Tx after x minutes can be obtained by Tx = Ix / Ir.

Then, such an experiment was performed by using the optical head 40.
Three states were performed: a state where the suction mechanism 42 was not mounted, a state where the suction mechanism 42 was mounted and no voltage was applied, and a state where the suction mechanism 42 was mounted and voltage + V was applied.

FIG. 7 is a view showing the above-mentioned experiment, in which the rotation time (min) of rotating the recording medium 9 and the transmittance Tx (%) are shown.
FIG.

As shown in FIG. 7, when the suction mechanism section 42 is not provided, dust gradually accumulates in the lubricant layer 94 of the recording medium 9 with the passage of time, and after about 80 minutes from the start of rotation, dust is accumulated. The transmittance starts to decrease. As a result, the transmittance To was about 60% in the initial state, but after about 140 minutes, the transmittance Tx became about 40%, which is a value significantly different from the initial state. This is because no mechanism for removing dust accumulated in the lubricant layer 94 is provided, and dust contained in the lubricant layer 94 blocks near-field light. Conceivable.

On the other hand, when the suction mechanism 42 is attached to the optical head 40 and the switch 62 is in the open state and the applied voltage + V is not applied, about 150 minutes after the start of rotation, The transmittance starts to decrease. However, as compared with the case where the suction mechanism unit 42 is not provided, the timing at which the transmittance starts to decrease is delayed, and only by providing the suction mechanism unit 42 as described above, a certain degree of dust removal effect can be obtained. Will be. In other words, this dust removal effect makes it possible to record and reproduce data more stably than before.

Further, in the case where the suction mechanism 42 is attached to the optical head 40 and the applied voltage + V is applied by closing the switch 62, even after about 200 minutes have elapsed from the start of rotation. The transmittance is about 60% of the initial state
Continue to maintain. For this reason, by applying the applied voltage + V to the suction mechanism section 42, an electrostatic action is generated on the dust contained in the lubricant layer 94, and it was not possible to perform suction by simply providing the suction mechanism section 42. It is considered that dust can be electrostatically adsorbed, and as a result, the phenomenon of decrease in transmittance does not occur for a long time. Therefore, by applying a predetermined voltage to the suction mechanism section 42 while the recording medium 9 is rotating, dust contained in the lubricant layer 94 can be removed most effectively, and long-term stable data Recording and playback become possible.

As described above, in the optical recording apparatus 1 described in this embodiment, the adsorption mechanism 42 for adsorbing and removing dust contained in the lubricant layer 94 formed on the surface side of the recording medium 9. , It is possible to record, reproduce or erase data more stably than before.

A power supply 61 is provided as voltage applying means for applying a predetermined voltage to the suction mechanism 42, and the suction mechanism 42 removes dust in the lubricant layer 94 by applying a voltage from the power supply 61. Since it is configured to be attracted by an electric action, it is possible to record, reproduce, or erase data more stably.

In the optical recording apparatus 1 described above, the dust contained in the lubricant layer 94 is suctioned and removed by the suction mechanism 42 provided integrally with the optical head 40. Various other methods are conceivable for removing dust in the lubricant layer 94 of the medium 9. For example, when a large amount of dust accumulates on the lubricant layer 94 of the recording medium 9 and it becomes impossible to perform stable data recording or the like, the recording medium 9 is reworked and only the lubricant layer 94 is replaced. Other methods are also conceivable. The dust removal mode in the optical recording device 1 is a mode that can be used in combination with such other various methods. And
When used in combination with another method, there is also an advantage that the effect duration of the other method is prolonged.

In this embodiment, the optical head 40
The example of the configuration in which the suction mechanism unit 42 is provided and the near-field light generating means 41 and the suction mechanism unit 42 are integrated has been described.
The invention is not limited to this, and a head dedicated to the suction mechanism may be separately provided.

When dust adsorption is performed for a long time,
It is expected that the dust suction capability of the suction mechanism unit 42 is reduced. In such a case, the suction mechanism unit is realized as, for example, a roller mechanism having a mesh structure. May be rotated so that the working surface (suction surface) is always updated in a circulating manner. When the suction mechanism 42 is replaced, it is preferable that the optical head 40 be replaceable. This is because if the irradiation optical system 20 is configured to be replaced, the cost of replacement parts increases.
This is because if only one of them is exchanged, it becomes difficult to attach it. Further, the suction mechanism unit 42 sucks dust from an area used for recording and reproduction on the recording medium 9 and, at a timing other than recording or reproduction, does not affect the area that does not affect recording or reproduction. If the suctioned dust is configured to be transferred, the suction mechanism 42 need not be replaced.

In the configuration described above, when a voltage is applied from the power supply section 61 to the suction mechanism section 42, the suction mechanism section 42 is always in the operating state. 32 detects the transmitted light intensity,
When an abnormality is detected based on the transmitted light intensity, a voltage may be applied to the suction mechanism section 42 to induce an electrostatic action to start the dust suction operation. In this case, the light receiving element 32 of the reproducing optical system 30 functions as a detecting unit for detecting the state of contamination of the recording medium 9 by dust, and when the light intensity detected by the detecting unit changes, Is started.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

For example, in the above description, the recording medium 9
Although the optical recording device 1 capable of recording, reproducing, or erasing data has been described above, for example, when the recording medium 9 is a detachable and portable recording medium, the optical system By removing the part and providing the suction mechanism, it is possible to realize a device dedicated to cleaning the recording medium 9. That is, the drive unit 1 is attached to the arm drive mechanism 2 in the configuration of the optical recording apparatus 1 described above.
The recording medium cleaning device is configured by providing the arm 8 and the arm unit 19 and providing a suction head having the suction mechanism unit 42 mounted at the tip of the arm unit 19. In addition,
Even in this case, means for holding the recording medium (means corresponding to the rotation mechanism unit 5 in the optical recording apparatus 1) is necessary.

[0057]

As described above, according to the first aspect of the present invention, the near-field light generating means generates near-field light in contact with the lubricant layer of the recording medium, and the adsorbing means generates the near-field light. Since it is configured to adsorb dust contained in the lubricant layer, near-field light is not blocked by dust contained in the lubricant layer during data recording and the like, and data can be stably recorded. , Can be reproduced or erased.

According to the second aspect of the present invention, since the suction means is configured to suction the dust by an electrostatic action by the voltage applied by the voltage applying means, the dust contained in the lubricant layer is removed. The suction effect can be increased, and more stable data can be recorded, reproduced, or erased.

According to the third aspect of the present invention, the optical head is arranged integrally with the near-field light generating means and is configured to adsorb dust contained in the lubricant layer of the recording medium. The optical head can adsorb dust contained in the lubricant layer.

According to the fourth aspect of the present invention, since the recording medium is held at a predetermined position and dust contained in the lubricant layer of the recording medium is adsorbed, stable data can be obtained. It is possible to clean the recording medium so as to be able to perform recording and the like.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an optical recording apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing an irradiation optical system and a reproduction optical system in the optical recording apparatus.

FIG. 3 is a cross-sectional view illustrating a structure of an optical head.

FIG. 4 is a diagram showing a positional relationship between an optical head and a recording medium as viewed from above the recording medium.

FIG. 5 is a sectional view showing the structure of a recording medium.

FIG. 6 is a diagram showing a structural formula of a photochromic material and a photochromic reaction caused by the substance.

FIG. 7 is a diagram illustrating a relationship between a rotation time when a recording medium is rotated and transmittance.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical recording device 9 Recording medium 94 Lubricant layer 20 Irradiation optical system 21 Laser light source 22 Collimating lens 23 Condensing lens 40 Optical head 41 Near-field light generation means 42 Suction mechanism (Suction means) 30 Reproduction optical system 61 Power supply part (voltage) Application means) 62 switch

Claims (4)

[Claims] 1. An optical recording apparatus for recording, reproducing, or erasing data on a recording medium having a lubricant layer formed on a recording surface, wherein the optical recording device contacts the recording surface with the lubricant layer. A near-field light generating means for generating near-field light, an adsorbing means for adsorbing dust contained in the lubricant layer,
An optical recording device comprising: 2. The optical recording apparatus according to claim 1, further comprising a voltage application unit that applies a predetermined voltage to the suction unit, wherein the suction unit is configured to apply the predetermined voltage to the dust by the voltage applied by the voltage application unit. An optical recording device characterized by adsorbing by electrostatic action. 3. An optical head used in an optical recording apparatus for recording, reproducing or erasing data on a recording medium having a lubricant layer formed on a recording surface, wherein the optical head is in contact with the lubricant layer. A near-field light generating means for generating near-field light with respect to the recording surface, and an adsorbing means which is disposed integrally with the near-field light generating means and adsorbs dust contained in the lubricant layer. An optical head, comprising: 4. A recording medium cleaning apparatus for cleaning a recording medium having a lubricant layer formed on a recording surface, comprising: means for holding the recording medium; and dust contained in the lubricant layer. Adsorption means for adsorbing,
A recording medium cleaning device comprising: