WO2005091079A1 - 電子ビーム描画装置 - Google Patents
電子ビーム描画装置 Download PDFInfo
- Publication number
- WO2005091079A1 WO2005091079A1 PCT/JP2005/005638 JP2005005638W WO2005091079A1 WO 2005091079 A1 WO2005091079 A1 WO 2005091079A1 JP 2005005638 W JP2005005638 W JP 2005005638W WO 2005091079 A1 WO2005091079 A1 WO 2005091079A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electron beam
- substrate
- circle
- rotation
- deflection
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
- H01J37/317—Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. for ion implantation
- H01J37/3174—Particle-beam lithography, e.g. electron beam lithography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/261—Preparing a master, e.g. exposing photoresist, electroforming
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/30—Electron or ion beam tubes for processing objects
- H01J2237/304—Controlling tubes
- H01J2237/30472—Controlling the beam
- H01J2237/30483—Scanning
Definitions
- Electron beam mass ring technology has been extensively studied for the production of such high recording density hard disks.
- an electron beam lithography exposure apparatus an electron beam spot emitted from an electron gun and focused by an electron lens is irradiated onto a resist-coated substrate.
- the irradiation position of the electron beam spot is controlled by a blanking control system and a beam deflection control system, and a desired beam pattern is drawn.
- an electron beam exposure apparatus an apparatus for accurately producing a master of a recording medium such as an optical disk has been developed (see, for example, Japanese Patent Application Laid-Open No. 2002-36671).
- An object of the present invention is to provide an electron beam drawing apparatus capable of drawing a circle connected at the start and end of the circle with high precision when drawing the electron beam concentrically. Is an example.
- An electron beam writing apparatus is an electron beam writing apparatus that irradiates an electron beam while rotating a substrate to draw a plurality of circles concentrically on the substrate, and deflects the electron beam to generate the electron beam.
- a beam deflecting unit that changes the irradiation position, a synchronizing signal generating unit that generates a synchronizing signal synchronized with the rotation of the substrate, and a beam based on the synchronizing signal when shifting from drawing one circle to drawing another circle
- a controller for controlling the deflecting unit to deflect the electron beam in the direction of the rotational radius of the substrate and in the direction of the rotational tangent of the substrate in the direction opposite to the rotation of the substrate; and And a beam blocking unit for blocking the irradiation of the substrate with the electron beam.
- An electron beam writing method is an electron beam writing method for irradiating an electron beam while rotating a substrate to draw a plurality of circles concentrically on the substrate.
- the interruption f ⁇ process, which stops the irradiation of the electron beam to the substrate, and the drawing start process, in which the electron beam is deflected at least in the direction of the radius of rotation of the substrate during the interruption to start the drawing of another circle It is characterized by having.
- FIG. 1 is a block diagram schematically illustrating a configuration of an electron beam writing apparatus according to a first embodiment of the present invention.
- FIG. 2 is a plan view showing a spiral pattern (dashed line) and a concentric pattern (solid line) of the disk.
- FIG. 3 is a schematic plan view illustrating the ease of drawing a plurality of concentric patterns on a substrate.
- FIG. 5 is a diagram corresponding to FIG. 4 and shows a blanking lf control signal and deflection control signals in the X and Y directions.
- FIG. 6 is a flowchart showing the drawing procedure shown in FIGS.
- FIG. 8 is a schematic plan view for explaining the deflection control at the time of shifting the drawing from the circle 15A to the circle 15B in the second embodiment.
- FIG. 9 is a view corresponding to FIG. 8 and shows a blanking control signal and deflection control signals in the X and Y directions.
- FIG. 11 is a diagram corresponding to FIG. 10, and is a diagram illustrating a blanking control signal and deflection control signals in the X and Y directions.
- FIG. 12 is a schematic plan view for explaining the deflection control at the time of shifting the drawing from the circle 15A to the circle 15B in the fourth embodiment.
- FIG. 13 is a diagram corresponding to FIG. 12, and is a diagram showing a blanking control signal and deflection control signals in the X and Y directions.
- the substrate 15 for the master disk is mounted on the turntable 16.
- the turntable 16 is rotationally driven about a vertical axis of the main surface of the disk substrate by a spindle motor 17 that is a rotary drive device that rotationally drives the substrate 15.
- the spindle motor 17 is provided on a feed stage (hereinafter, simply referred to as a stage) 18.
- Stage 1 8 Is coupled to a feed motor 19, which is a transfer (key drive) device, and can move the spindle motor 17 and the evening table 16 in a predetermined direction in a plane parallel to the main surface of the substrate 15 It has become.
- the evening table 16 is made of a dielectric material, for example, ceramic, and has an electrostatic chucking mechanism (not shown).
- an electrostatic chucking mechanism includes a turntable 16 (ceramic) and electrodes provided in the turntable 16 and made of a conductor for generating electrostatic polarization.
- a high-voltage power supply (not shown) is connected to the electrode, and the substrate 15 is suction-held by applying a voltage to the electrode from the high-voltage power supply.
- optical elements such as a reflecting mirror 35 A and an interferometer, which are part of a laser length measuring system 35 described later, are used.
- the vacuum chamber 11 is installed via an anti-vibration table (not shown) such as an air damper, and transmission of vibration from outside is suppressed. Further, a vacuum pump (not shown) is connected to the vacuum chamber 11, and the inside of the chamber is evacuated by this.
- an anti-vibration table such as an air damper
- the interior of 11 is set to be a vacuum atmosphere with a constant pressure.
- the electron gun 21 emits an electron beam (EB) accelerated to several tens of eV by a cathode (not shown) to which a high voltage supplied from an accelerating high-voltage power supply (not shown) is applied.
- the converging lens 22 converges the emitted electron beam.
- the blanking electrodes 23 switch on / off (ONZO FF) of the electron beam based on the modulation signal from the blanking control unit 31. . That is, by applying a voltage between the blanking electrodes 23 and largely deflecting the electron beam passing therethrough, the electron beam can be prevented from passing through the aperture 24 and the electron beam can be turned off. .
- the alignment coil 26 corrects the position of the electronic beam based on the correction signal from the beam position corrector 32.
- the deflection electrode 27 can control the deflection of the electron beam at high speed based on a control signal from the deflection control unit 33. With this deflection control, the position of the electron beam spot with respect to the substrate 15 is controlled.
- the focus lens 28 performs electron beam focus control based on a control signal from the focus control unit 34.
- the vacuum chamber 11 is provided with a light source 36 A and a photodetector 36 B for detecting the height of the main surface of the substrate 15.
- the electron beam writing apparatus 10 is provided with a height detecting section 36.
- the photodetector 36B includes, for example, a position sensor and a CCD (Charge Coupled Device), and receives a light beam emitted from the light source 36A and reflected on the surface of the substrate 15 and receives the light beam.
- the light receiving signal is supplied to the height detector 36.
- the height detector 36 detects the height of the main surface of the substrate 15 based on the received light signal, and generates a detection signal.
- a detection signal indicating the height of the main surface of the substrate 15 is supplied to a focus control section 34, and the focus control section 34 performs focus control of the electron beam based on the detection signal.
- the laser length measurement system 35 measures the distance to the stage 18 using the laser beam for distance measurement from the light source in the laser length measurement system 35, and the distance measurement data, that is, the position data of the stage 18 is measured.
- the position controller 37 To the position controller 37.
- the position control unit 37 generates a position correction signal for correcting the beam position from the position data, and sends it to the beam position corrector 32.
- the beam position corrector 32 corrects the position of the electron beam based on the correction signal.
- the position control section 37 generates a position control signal for controlling the feed motor 19 and supplies the generated signal to the feed motor 19. Pay.
- the rotation of the spindle motor 17 is controlled by a rotation control unit 38. Further, the rotation control section 38 sends a rotation synchronization signal of the spindle motor 17 to the drawing controller 39.
- the rotation synchronization signal includes a signal indicating the reference rotation position of the substrate 15 and a pulse signal for each predetermined rotation angle from the reference rotation position.
- the rotation control unit 38 obtains the rotation angle, rotation speed, rotation frequency, and the like of the substrate 15 based on the rotation synchronization signal.
- the drawing controller 39 sends a blanking control signal and a mi direction control signal to the blanking control unit 31 and the deflection control unit 33, respectively, and performs drawing control. Such drawing control is performed in synchronization with the rotation signal of the spindle motor 17 as described later.
- the main signal lines for the blanking control unit 31, the beam position corrector 32, the deflection control unit 33, the focus control unit 34, the position control unit 37, and the rotation control unit 38 are shown. Each component is bilaterally connected to the drawing controller 39. Each component of the electron beam writing apparatus 10 is connected to a system controller (not shown) that controls the entire apparatus and is configured to transmit and receive necessary signals. Next, the case of drawing (electron beam exposure) a concentric pattern of the master hard disk by the electron beam drawing apparatus 10 will be described in detail below.
- the hard disk tracks used today are not concentric circles (shown by solid lines) instead of spiral patterns (shown by dashed lines) used on optical disks such as CDs and DVDs, as shown in Figure 2. It is. An example will be described in which concentric patterns (15A, 15B, 15C, etc. in FIG. 2) are sequentially drawn by such a device (X-0 drawing device).
- FIG. 3 is a plan view schematically showing a case where a plurality of concentric patterns are drawn on a substrate 15 serving as a master disk of a hard disk. Electron beam drawing (electron beam exposure) is performed concentrically on the resist-coated substrate 15 as shown in the figure, and the concentric circles are accurately connected at the beginning and end. Draw a circle (track). That is, first, electron beam writing is started from the starting point 15X of the circle 15A, and a circle is drawn so as to be connected to the drawing starting point 15X at the drawing end point (end of the circle 15A). In the figure, the positions of the start and end (connection points) 15X of the circle 15A are indicated by black circles (1) in the description.
- a circle 15B which is a concentric circle with the circle 15A, is similarly drawn using the point 15Y outside the radius (radial) direction of the drawing connection point 15X of the circle 15A as a drawing connection point. Further, a point 15Z on the outer side in the radius (radial) direction of the drawing connection point 15Y is used as a drawing connection point, and concentric circles 15C, which are concentric circles with the circles 15A and 15B, are drawn in the same manner.
- the drawing connection points 15X, 15Y, and 15 ⁇ are on the same radial straight line at the concentric circles 15A, 15B, and 15C. The same applies when drawing concentric circles on the radial inside. It is.
- FIG. 4 is a schematic plan view for explaining a case where the concentric circles 15 and 15 B are drawn so that the circles are connected with high accuracy at the above-mentioned drawing connection points. (End point) The vicinity is shown enlarged.
- FIG. 5 is a view corresponding to FIG. 4 and shows a blanking control signal and deflection control signals in the X and Y directions.
- FIG. 6 is a flowchart showing a procedure for drawing a heel. The case where the HI rotation control is performed on the substrate 15 at a constant linear velocity (CLV) V will be described as an example.
- CLV constant linear velocity
- the positions B and E are the drawing start points of the circles, It is also a continuation point.
- Positions B and E are on the same radial straight line (hereinafter also referred to as a reference radius straight line) which is a drawing reference, and are the bases of concentric circles 15A and 15B, respectively.
- This reference radius straight line is, for example, so that the drawing connection position of each circle is on the reference radius straight line, or as described later, in the case of overwriting, in the overwriting; ⁇ Can be specified. Not limited to this, the reference radius straight line can be set to ⁇ t.
- the electron beam is not only rotated in the radial direction (radial) but also opposite to the rotation (movement) of the substrate.
- the direction of rotation is also deflected in the tangential direction. Also, it is deflected in the rotational tangential direction at the drawing connection of the circle. Therefore, it is possible to draw a circle (track) that is connected accurately at the beginning and end. Also, even when there is uneven rotation on the rotary stage, the circles can be joined with high accuracy.
- the Y deflection signal having a ramp waveform at the position A.
- the point of starting beam deflection is the same as in the first embodiment.
- the position B for example, the reference position RA
- force ⁇ the deflection speed is increased, and the electron beam is emitted by the blanking signal at the position C that has passed the reference position RA.
- the electron beam is cut off (beam: OFF) by blanking.
- the electron beam is deflected in the same direction as before (-Y direction in the figure), and the direction of the next circle (track) 15 B (+ in the figure)
- the electron beam is deflected in the X direction), and the electron beam is transferred at high speed to the position E on the circle 15B.
- the electron beam is deflected in the tangential direction (+ Y direction in the figure) by the ramp deflection Y deflection signal until it reaches position F.
- the position F is set as a position before reaching the reference position RB on the reference radius straight line in the circle 15B.
- the blanking is released so that the electron beam EB is irradiated on the substrate 15 (beam: ON).
- the deflection speed is reduced, and the deflection by the ramp waveform Y deflection signal is completed at the position H.
- the drawing start point and the drawing end point are the reference positions, and blanking control is performed so that overwriting does not occur.
- overwriting is performed. Area is generated.
- circle 15B taking circle 15B as an example, if circle 15C is drawn in the same manner as above after circle 15B, the position of circle 15B Drawing end position C
- the section up to '(the position on the circle 15B corresponding to the position C) is an overwritten portion (WO). That is, deflection and blanking control are performed so that an overwritten portion (WO) is generated around the reference position (RA, RB) on the circle 15A and the circle 15B.
- FIG. 10 is a schematic plan view for explaining the deflection control in the transition of the drawing from the circle 15A to the circle 15B, and shows the vicinity of the drawing connection point in an enlarged manner.
- FIG. 11 is a diagram corresponding to FIG. 10 and shows a blanking control signal and deflection control signals in the X and Y directions.
- the deflection by the Y deflection signal is started from the position A on the circle 15A, and a blanking voltage having a predetermined increasing rate is applied from the position B on the circle 15A. That is, by applying the blanking voltage in a ramp shape, the intensity of the beam applied to the substrate can be adjusted.
- the blanking voltage is sharply increased, the electron beam is completely blanked, and the electron beam is cut off (beam: OFF). In other words, the beam intensity gradually decreases from the position B to the position C, and becomes completely zero at the position C.
- the electron beam is deflected in the one Y direction and the electron beam is deflected in the + X direction to transfer the electron beam to the position E on the circle 15B at a high speed.
- the blanking voltage is sharply reduced to a predetermined voltage so that an electron beam having a beam intensity lower than the completely ON state is irradiated. Then, the blanking voltage is reduced at a predetermined reduction rate, and the position G ( (Corresponding to position C on circle 15A), and completely turn on the beam. After that, at the position H, the deflection by the ramp waveform Y deflection signal ends.
- the beam irradiation intensity may be changed at a predetermined change rate before or during at least one of the periods during which the electron beam is deflected in the radial direction.
- FIG. 12 is a schematic plan view for explaining the deflection control in the transition of the drawing from the circle 15A to the circle 15B, and shows the vicinity of the drawing connection point in an enlarged manner.
- FIG. 13 is a diagram corresponding to FIG. 12, and is a diagram showing a blanking control signal and deflection control signals in the X and Y directions.
- the electron beam is deflected in the tangential direction (the Y direction in the figure) by a sinusoidal Y deflection signal over the period from position A to position C.
- Tangier from position C It deflects the electron beam in the radial direction (one Y direction in the figure) and also deflects the electron beam in the radial direction (+ X direction in the figure) to transfer the electron beam to position D at high speed.
- the electron beam is deflected in the tangential direction (the Y direction in the figure) by a sinusoidal Y deflection signal.
- the point that the electron beam is blanked and the electron beam is cut off (beam: OFF) over the period from the position B, which is the drawing connection point, to the position E is the same as in the first embodiment.
- the interruption period of the electron beam may be set so as to overwrite.
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- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/593,476 US7473910B2 (en) | 2004-03-23 | 2005-03-22 | Electron beam lithography apparatus |
EP05721565A EP1729177A1 (en) | 2004-03-23 | 2005-03-22 | Electron beam lithography system |
JP2006511337A JP4322919B2 (ja) | 2004-03-23 | 2005-03-22 | 電子ビーム描画装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004084464 | 2004-03-23 | ||
JP2004-084464 | 2004-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005091079A1 true WO2005091079A1 (ja) | 2005-09-29 |
Family
ID=34993871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/005638 WO2005091079A1 (ja) | 2004-03-23 | 2005-03-22 | 電子ビーム描画装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7473910B2 (ja) |
EP (1) | EP1729177A1 (ja) |
JP (2) | JP4322919B2 (ja) |
CN (1) | CN1934503A (ja) |
WO (1) | WO2005091079A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009211757A (ja) * | 2008-03-04 | 2009-09-17 | Fujifilm Corp | 電子ビーム描画方法、電子ビーム描画装置、インプリントモールドの製造方法および磁気ディスク媒体の製造方法 |
JP2009223155A (ja) * | 2008-03-18 | 2009-10-01 | Fujifilm Corp | 電子ビーム描画方法、電子ビーム描画装置、凹凸パターン担持体および磁気ディスク媒体 |
JP2009223199A (ja) * | 2008-03-18 | 2009-10-01 | Ricoh Co Ltd | 電子線描画方法 |
JP2010026464A (ja) * | 2008-07-24 | 2010-02-04 | Ricoh Co Ltd | 電子線描画装置、電子線描画方法、原盤製造方法、及び情報記録媒体製造方法 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4322919B2 (ja) * | 2004-03-23 | 2009-09-02 | パイオニア株式会社 | 電子ビーム描画装置 |
US20100047717A1 (en) * | 2006-11-06 | 2010-02-25 | Yoshiaki Kojima | Method for manufacturing original master |
US8189902B1 (en) * | 2007-12-21 | 2012-05-29 | Doug Carson & Associates | Creating an XY image pattern on a rotating substrate |
US8018820B2 (en) * | 2008-08-15 | 2011-09-13 | Seagate Technology, Llc | Magnetic recording system using e-beam deflection |
JP2012517071A (ja) * | 2009-02-02 | 2012-07-26 | パイオニア株式会社 | トラック整列書込ビーム偏向による媒体の事前書き込み及び書込周波数の調整 |
KR101636523B1 (ko) | 2009-05-20 | 2016-07-06 | 마퍼 리쏘그라피 아이피 비.브이. | 듀얼 패스 스캐닝 |
WO2011115139A1 (ja) * | 2010-03-16 | 2011-09-22 | Hoya株式会社 | 電子ビーム露光方法および電子ビーム露光装置 |
TWI477925B (zh) * | 2011-10-04 | 2015-03-21 | Nuflare Technology Inc | Multi - beam charged particle beam mapping device and multi - beam charged particle beam rendering method |
KR102475973B1 (ko) * | 2015-03-31 | 2022-12-08 | 도쿄엘렉트론가부시키가이샤 | 회전, 병진이동, 및 가변 처리 조건을 통한 노광 선량 균질화 |
JP7008598B2 (ja) * | 2017-09-07 | 2022-01-25 | 日本電子株式会社 | 電子銃および電子線装置 |
CN111048227A (zh) * | 2019-12-04 | 2020-04-21 | 中国工程物理研究院材料研究所 | 一种电子束辐照装置和设备 |
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CN1542798A (zh) | 2003-02-26 | 2004-11-03 | ���µ�����ҵ��ʽ���� | 电子束记录器和电子束照射位置检测方法 |
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2005
- 2005-03-22 JP JP2006511337A patent/JP4322919B2/ja not_active Expired - Fee Related
- 2005-03-22 CN CNA2005800091847A patent/CN1934503A/zh active Pending
- 2005-03-22 WO PCT/JP2005/005638 patent/WO2005091079A1/ja not_active Application Discontinuation
- 2005-03-22 US US10/593,476 patent/US7473910B2/en active Active
- 2005-03-22 EP EP05721565A patent/EP1729177A1/en not_active Withdrawn
-
2008
- 2008-12-18 JP JP2008322260A patent/JP2009134857A/ja active Pending
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JPH0215889A (ja) * | 1988-06-30 | 1990-01-19 | Seiko Epson Corp | レーザーカッティング方法 |
JPH06103615A (ja) * | 1992-09-18 | 1994-04-15 | Ricoh Co Ltd | 光ディスク原盤露光装置 |
JPH06243510A (ja) * | 1993-02-17 | 1994-09-02 | Sony Corp | 光ディスク及び光ディスク原盤製造装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2009211757A (ja) * | 2008-03-04 | 2009-09-17 | Fujifilm Corp | 電子ビーム描画方法、電子ビーム描画装置、インプリントモールドの製造方法および磁気ディスク媒体の製造方法 |
JP2009223155A (ja) * | 2008-03-18 | 2009-10-01 | Fujifilm Corp | 電子ビーム描画方法、電子ビーム描画装置、凹凸パターン担持体および磁気ディスク媒体 |
JP2009223199A (ja) * | 2008-03-18 | 2009-10-01 | Ricoh Co Ltd | 電子線描画方法 |
JP2010026464A (ja) * | 2008-07-24 | 2010-02-04 | Ricoh Co Ltd | 電子線描画装置、電子線描画方法、原盤製造方法、及び情報記録媒体製造方法 |
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JP4322919B2 (ja) | 2009-09-02 |
US20070160932A1 (en) | 2007-07-12 |
JP2009134857A (ja) | 2009-06-18 |
US7473910B2 (en) | 2009-01-06 |
CN1934503A (zh) | 2007-03-21 |
JPWO2005091079A1 (ja) | 2008-02-07 |
EP1729177A1 (en) | 2006-12-06 |
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