CN100359582C - Method and device for fabricating optical recording medium - Google Patents
Method and device for fabricating optical recording medium Download PDFInfo
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- CN100359582C CN100359582C CNB2005100716845A CN200510071684A CN100359582C CN 100359582 C CN100359582 C CN 100359582C CN B2005100716845 A CNB2005100716845 A CN B2005100716845A CN 200510071684 A CN200510071684 A CN 200510071684A CN 100359582 C CN100359582 C CN 100359582C
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Abstract
PROBLEM TO BE SOLVED: To increase yield without renovating existing production facilities in a device for manufacturing a one side two-layer type optical recording medium.
Description
Technical field
The present invention relates to a kind of method and apparatus of producing optical record medium, this optical record medium comprises first recording layer and second recording layer, and can be by means of writing down from optical record medium one side incident and beam reflected and reproducing.
Background technology
In recent years, reported that DVD-dual layer-R is among the exploitation, this is a kind of write-once dvd media of double-deck stepped construction, and can write down and reproduce in the one side.For example, concentrate by the meeting paper of Japanese recording medium craft guild tissue on February 27th, 2004, disclose this DVD-dual layer-R in the 9th page of " Toward Further Advances of Red Laser Recording DVD (prospect of red laser record DVD) " that H.Matsumura delivers.
Fig. 9 A to 9H is the schematic cross-section of production DVD-dual layer-R method in the prior art.
At first, in step shown in Fig. 9 A and Fig. 9 B, substrate is coated with first pigment (pigment coating), and the layer that forms thus is called " recording layer substrate L0 ".
Next, in step shown in Fig. 9 C,, and form middle layer and groove with soft pressing mold by sputtering sedimentation one translucent reflective layer.
Then, in step shown in Fig. 9 D, remove soft pressing mold.
In step shown in Fig. 9 E and Fig. 9 F, apply second pigment, the layer that forms thus is called " recording layer substrate L1 ".
Next, in step shown in Fig. 9 G,, and form indicator by the sputtering sedimentation reflection horizon.
In step shown in Fig. 9 H, virtual substrate (cover) is provided, thereby realizes double-deck stacked indicator.
Yet said method needs device to form middle layer and groove in soft pressing mold, and needs device to remove soft pressing mold, and adopts this method not produce the stacked indicator of this bilayer with existing equipment.In addition, owing to need to improve existing equipment or investment buying new equipment, production cost will increase.In addition, owing to can damage soft pressing mold when removing this soft pressing mold, so throughput rate is very low.
Summary of the invention
Therefore, the purpose that the present invention is general is to solve one or more problem of the prior art.
A special purpose of the present invention is, a kind of method and apparatus that is used to produce the single-surface double-layer optical record medium is provided, and it can improve output capacity and not need to improve existing equipment.
First aspect according to the present invention, a kind of method of producing optical record medium is provided, this optical record medium comprises first recording layer and second recording layer, and can be by writing down from optical record medium one side incident and beam reflected and reproducing, described method comprises the steps, forms first recording layer by pigment coating and sputter successively in first substrate; In second substrate, form second recording layer by first sputter, pigment coating and second sputter successively; Be positioned at the mode in the outside in conjunction with first recording layer and second recording layer with first substrate and second substrate.
According to the present invention, form the single-surface double-layer optical record medium in conjunction with first recording layer and second recording layer by the mode that is positioned at the outside with first substrate and second substrate.Because first recording layer and second recording layer are stacked not in prior art, so unnecessaryly utilize soft pressing mold to form middle layer and groove.
As an embodiment, in the step that forms first recording layer, first reflection horizon of optical record medium forms by sputter; In the step that forms second recording layer, second reflection horizon of optical record medium forms by first sputter, and forms the inorganic protective layer of optical record medium by second sputter.
As an embodiment, in the step that forms first recording layer, after applying, described pigment anneals; In the step that forms second recording layer, after applying, described pigment anneals.
As an embodiment, in the step that forms first recording layer, after described sputter, carry out the edge and clean; In the step that forms second recording layer, after second sputter, carry out the edge and clean.In this embodiment, the described edge at least one step that forms first recording layer and second recording layer cleans the back and forms protective seam.
As an embodiment, check after forming the step of the step of first recording layer and second recording layer.
According to the present invention; because carrying out the edge after second sputter of described sputter that forms the first recording layer step and the formation second recording layer step cleans; in addition; edge at least one step that forms first recording layer and second recording layer cleans the back and forms protective seam, can prevent the erosion or the crack that for example take place in reflection horizon and inorganic protective layer before in conjunction with first recording layer and second recording layer.
Second aspect according to the present invention, a kind of device of producing optical record medium is provided, this optical record medium comprises first recording layer and second recording layer, and can be by writing down from optical record medium one side incident and beam reflected and reproducing, described device comprises: first production line forms first recording layer by pigment coating and sputter successively in first substrate; Second production line applies by first sputter, pigment in second substrate successively and second sputter forms second recording layer; And the 3rd production line, be positioned at the mode in the outside in conjunction with first recording layer and second recording layer with first substrate and second substrate.
As an embodiment, first production line forms first reflection horizon of optical record medium by described sputter; Second production line forms the inorganic protective layer of optical record medium by second reflection horizon of first sputter formation optical record medium by described second sputter.
As an embodiment, this device also comprises annealing device, is used for annealing after the described pigment that forms first recording layer and second recording layer applies.
As an embodiment, this device also comprises the edge cleaning device, be used for after the described sputter when forming first recording layer respectively and described second sputter when forming second recording layer after carry out the edge and clean.In this embodiment, this device comprises that also protective seam forms device, is used for described edge in when forming first recording layer and second recording layer at least one to clean the back and form protective seam.
As an embodiment, this device also comprises testing fixture, is used for checking first recording layer and second recording layer.
In conjunction with the drawings to following DETAILED DESCRIPTION OF THE PREFERRED, it is more obvious that these and other purposes, features and advantages of the present invention will become.
Description of drawings
Fig. 1 is the schematic cross-section according to the single-surface double-layer optical record medium of the production method production of first embodiment of the invention;
Fig. 2 A and Fig. 2 B are respectively in the single-surface double-layer optical record medium shown in Figure 1 the schematic cross-section of the structure of the second dish substrate L1 and the first dish substrate L0;
Fig. 3 is the schematic flow sheet according to the production method of first embodiment of the invention, single-surface double-layer optical record medium shown in Figure 1;
Fig. 4 schematically illustrates the calcspar that is used to produce an example of device of single-surface double-layer optical record medium according to the embodiment of the invention;
Fig. 5 schematically illustrates the calcspar that is used to produce another example of device of single-surface double-layer optical record medium according to the embodiment of the invention;
Fig. 6 is the schematic cross-section according to the single-surface double-layer optical record medium of the production method production of second embodiment of the invention;
Fig. 7 A and Fig. 7 B are respectively in the single-surface double-layer optical record medium shown in Figure 6 the schematic cross-section of the structure of the second dish substrate L1 and the first dish substrate L0;
Fig. 8 is the schematic flow sheet according to the production method of second embodiment of the invention, single-surface double-layer optical record medium shown in Figure 6; And
Fig. 9 A to Fig. 9 H is the schematic cross-section of production DVD-dual layer-R method in the prior art.
Embodiment
Next, the preferred embodiments of the present invention will be described in conjunction with the accompanying drawings.
First embodiment
Fig. 1 is the schematic cross-section according to the single-surface double-layer optical record medium of the production method production of first embodiment of the invention.
Optical record medium shown in Figure 1 comprises first substrate 1, the first pigment recording layer 2, first reflection horizon 3, second substrate 11, second reflection horizon 12, the second pigment recording layer 13, inorganic protective layer 14 and transparent intermediate layer 8.
First substrate 1, the first pigment recording layer 2, first reflection horizon 3 and transparent intermediate layer 8 constitute the first dish substrate L0; Second substrate 11, second reflection horizon 12, the second pigment recording layer 13, inorganic protective layer 14 and transparent intermediate layer 8 constitute the second dish substrate L1.
The laser beam of incident enters into optical record medium and reflects from the first dish substrate L0, one side leaves optical record medium, is used for record and reproduction.
Fig. 2 A and Fig. 2 B are respectively in the single-surface double-layer optical record medium shown in Figure 1 the structural section synoptic diagram of the second dish substrate L1 and the first dish substrate L0.
Transparent intermediate layer 8 shown in Fig. 2 A and Fig. 2 B is represented with 8a and 8b respectively.
In Fig. 2 A, the second dish substrate L1 further comprises intermediate groove part 15, base groove 16, and the mark 17 in the second pigment recording layer 13.
In Fig. 2 B, the first dish substrate L0 further comprises intermediate groove part 5, base groove 6, and the mark 7 in the first pigment recording layer 2.
Fig. 3 is the schematic flow sheet that illustrates according to first embodiment of the invention, manufacturing single-surface double-layer optical record medium method shown in Figure 1, wherein, step S1-1 to S1-8 illustrates the manufacture process of the first dish substrate L0, and step S2-1 to S2-10 illustrates the manufacture process of the second dish substrate L1.
The manufacturing of the first dish substrate L0 at first, is described.
In step S1-1, form first substrate 1 by means of injection mo(u)lding by pressing mold with unevenness, this pressing mold has corresponding unevenness.For example, first substrate 1 adopts transparent material to form, and preferred first substrate 1 adopts the material of excellent optical performance (for example, little complex index of refraction and low water absorbable) to form, from preferred carbonate in aspect such as plasticity, cost and shape stabilities.For example, the thickness range of first substrate 1 is 560-600 μ m, and it is narrow as much as possible on the direction in face to it is desirable to the thickness distribution of substrate.
In step S1-2, first substrate, 1 usefulness online (on-line) testing fixture of acquisition comes mechanical property, optical property and shape (substrate thickness) performance is checked.Certainly, this inspection also can off line be carried out.
In step S1-3, after inspection, coating pigment coating in first substrate 1.In first embodiment, consider throughput rate and production cost, use existing spin coating method to come coating pigment.Apply by pigment, in first substrate 1, form the first pigment recording layer 2.It is desirable to, the thickness distribution of dye film is narrow as much as possible on the direction in face.
In step S1-4, after pigment applies, utilize the on-line retrieval device to come the underlying structure in making is carried out online defect inspection and film thickness inspection.Certainly, this is checked also and can off line implement.
In step S1-5, anneal on the underlying structure in the mill.
In step S1-6, form translucent reflective layer as first reflection horizon 3 by sputtering sedimentation.
In step S1-7, because the pigment recording medium adheres on the edge of the dish of first in manufacturing substrate L0, the edge of the first dish substrate L0 in therefore making cleans with spin coating.
In step S1-8, behind the cleaning edge, utilize the on-line retrieval device that the first independent dish substrate L0 is carried out the on line quality inspection, thereby, finish the manufacturing of the first dish substrate L0.
Next, the manufacturing of the second substrate L1 is described.
In step S2-1, form second substrate 11 by means of injection mo(u)lding by pressing mold with unevenness, this pressing mold has corresponding unevenness.Second substrate 11 needs not be transparent, does not also need to adopt the material of optical property and substrate thickness function admirable to form.Simultaneously, consider and the relation of first substrate 1 that second substrate 11 preferably has hardness and the water absorptivity that is complementary with first substrate 1, similarly, from aspects such as plasticity, cost and shape stabilities, preferred carbonate.
In step S2-2, second substrate, the 11 usefulness on-line retrieval devices of acquisition come mechanical property and others are checked.This is checked also and can off line implement.
In step S2-3, by sputtering sedimentation second reflection horizon 12.
In step S2-4, after sputter, the underlying structure of making is carried out online defect inspection and film thickness inspection with the on-line retrieval device.Certainly, this inspection can off line be implemented.
In step S2-5, after inspection, by means of spin coating, in second substrate 11 coating pigment coated, thereby in second substrate 11, form the second pigment recording layer 13.
In step S2-6, after pigment applies, the underlying structure in making is carried out online defect inspection and film thickness inspection with the on-line retrieval device.Certainly, this inspection can off line be implemented.
In step S2-7, on the underlying structure of making, anneal.
In step S2-8, utilize sputtering sedimentation inorganic protective layer 14.
In step S2-9,, utilize spin coating that second edge that coils substrate L1 in making is cleaned because the pigment recording medium adheres on the edge of the dish of second in manufacturing substrate L1.
In step S2-10, after the edge cleans, the second independent dish substrate L1 is carried out the on line quality inspection with the on-line retrieval device, thereby, finish the manufacturing of the second dish substrate L1.
In step S3-1, the first dish substrate L0 and the second dish substrate L1 lay respectively at the mode combination in the outside with first substrate 1 and second substrate 11.When the first dish substrate L0 and the second dish substrate L1 in conjunction with the time, obtain transparent intermediate layer 8 (8a, 8b).
In step S3-2, after combination, the single-surface double-layer optical record medium that obtains is carried out the on line quality inspection with the on-line retrieval device, thereby, finish the manufacturing of single-surface double-layer optical record medium.
Fig. 4 is the calcspar of an example that schematically illustrates the device of the single-surface double-layer optical record medium that is used to produce this embodiment according to the present invention.
In the present embodiment, it is linked together that a part and being used to that is used to make the production line of the first dish substrate L0 is made the part of production line of the second dish substrate L1.
Note among Fig. 4 and not shown testing fixture.
Device shown in Figure 4 comprises the injection molding apparatus 20 that is used to form the first dish substrate L0, be used to form the injection molding apparatus 21 of the second dish substrate L1, be used to form the sputter equipment 22 of the second dish substrate L1, be used to form the cooling device 23 of the first dish substrate L0 and the second dish substrate L1,24, be used to form the coating mould 25 of the first dish substrate L0 and the second dish substrate L1, be used to form the annealing device 26 of the first dish substrate L0 and the second dish substrate L1, be used to form the sputter equipment 27 of the first dish substrate L0, be used to form second sputter equipment 28 of the second dish substrate L1 and be used for being positioned at the coupling apparatus 29 of the mode in the outside in conjunction with the first dish substrate L0 and the second dish substrate L1 with first substrate and second substrate.
According to this example, be used to make the production line of the first dish substrate L0 and be used to make the production line of the second dish substrate L1 linked together at coating mould 25 and annealing device 26 places.Like this, can make that production line shortens.
Fig. 5 is another the routine calcspar of device that schematically shows the single-surface double-layer optical record medium that is used to produce this embodiment according to the present invention.
The difference of device shown in Figure 5 and device shown in Figure 4 is that the production line of the first dish substrate L0 and the second dish substrate L1 is independent fully, and two coating mould 25a and 25b are arranged, and two annealing device 26a and 26b.Coating mould 25a and annealing device 26a are used for the first dish substrate L0, and coating mould 25b and annealing device 26b are used for the second dish substrate L1.
According to present embodiment, do not need to make special coating mould 25 and annealing device 26 and come as shown in Figure 4 that embodiment makes that like that the production line part is linked together, and can use existing common unit.
Second embodiment
Fig. 6 is the schematic cross-section that schematically shows the single-surface double-layer optical record medium of producing according to the production method of second embodiment of the invention.
In this embodiment, with describe among the previous embodiment the same, identical reference marker is represented components identical.
Optical record medium shown in Figure 6 comprises first substrate 1, the first pigment recording layer 2, first reflection horizon 3, second substrate 11, second reflection horizon 12, the second pigment recording layer 13, inorganic protective layer 14, transparent intermediate layer 8 and protective seam 9,10.
First substrate 1, the first pigment recording layer 2, first reflection horizon 3, transparent intermediate layer 8 and protective seam 9 are formed the first dish substrate L0; Second substrate 11, second reflection horizon 12, the second pigment recording layer 13, inorganic protective layer 14, transparent intermediate layer 8 and protective seam 10 are formed the second dish substrate L1.
Incoming laser beam enters into optical record medium and reflects from the first dish substrate L0 side, is used for record and reproduces.
Fig. 7 A and Fig. 7 B are respectively the sectional view of the structure that schematically shows in the single-surface double-layer optical record medium shown in Figure 6 the second dish substrate L1 and the first dish substrate L0.
In Fig. 7 A, the second dish substrate L1 further comprises the mark 17 in intermediate groove part 15, base groove 16 and the second pigment recording layer 13.
In Fig. 7 B, the first dish substrate L0 further comprises the mark 7 in intermediate groove part 5, base groove 6 and the first pigment recording layer 2.
Fig. 8 is for according to a second embodiment of the present invention, the process flow diagram of the production method of making single-surface double-layer optical record medium shown in Figure 6 is shown, wherein, the manufacture process of step S1-1 to the S1-9 explanation first dish substrate L0, simultaneously, the manufacture process of step S2-1 to the S2-11 explanation second dish substrate L1.
The manufacturing of the first dish substrate L0 at first, is described.
In step S1-1, form first substrate 1 by means of injection mo(u)lding by pressing mold with unevenness, this pressing mold has corresponding unevenness.For example, first substrate, 1 usefulness transparent material forms, and first substrate 1 preferably adopts the material of excellent optical performance (for example, little complex index of refraction and low water absorbable) to form, from preferred carbonate in aspect such as plasticity, cost and shape stabilities.For example, the thickness range of first substrate 1 is 560-600 μ m, it is desirable to, and the thickness distribution of substrate direction in face is narrow as much as possible.
In step S1-2, with the on-line retrieval device mechanical property, optical property and shape (substrate thickness) performance is carried out in first substrate 1 that obtains and check.Certainly, this is checked also and can off line implement.
In step S1-3, after inspection, coating pigment coating in first substrate 1.In first embodiment, consider throughput rate and production cost, adopt existing spin-coating method to come coating pigment.Apply by pigment, in first substrate 1, form the first pigment recording layer 2.It is desirable to, the thickness distribution of dye film is narrow as much as possible on the direction in face.
In step S1-4, after pigment applies, the underlying structure of making is carried out online defect inspection and film thickness inspection with the on-line retrieval device.Certainly, this is checked also and can off line implement.
In step S1-5, the underlying structure in making is annealed.
In step S1-6, utilize sputtering sedimentation to form translucent reflective layer as first reflection horizon 3.
In step S1-7, because adhering to first of manufacturing, the pigment recording medium coils on the edge of substrate L0, therefore utilize spin coating that first edge that coils substrate L0 is cleaned.
In step S1-8, utilize sputter, on first reflection horizon 3 of making, form protective seam 9 by translucent reflective layer.
In step S1-9, after sputter, separately the first dish substrate L0 is carried out the on line quality inspection with the on-line retrieval device, thereby, finish the manufacturing of the first dish substrate L0.
Next, the manufacturing of the second substrate L1 is described.
In step S2-1, form second substrate 11 by means of injection mo(u)lding by pressing mold with unevenness, this pressing mold has corresponding unevenness.Second substrate 11 needs not be transparent, does not also need to adopt the material of optical property and substrate thickness function admirable to form.Simultaneously, consider the relation of first substrate 1, preferred second substrate 11 has hardness and the water absorptivity that is complementary with first substrate 1, from aspects such as plasticity, cost and shape stabilities, similarly, preferred carbonate.
In step S2-2, the inspection of aspects such as mechanical property is carried out in second substrate 11 that obtains with the on-line retrieval device.This is checked also and can off line implement.
In step S2-3, form second reflection horizon 12 by sputtering sedimentation.
In step S2-4, after sputter, the underlying structure in making is carried out online defect inspection and film thickness inspection with the on-line retrieval device.Certainly, this inspection can off line be implemented.
In step S2-5, after inspection, utilize to be spin-coated on and carry out the pigment coating in second substrate 11, thereby in second substrate 11, form the second pigment recording layer 13.
In step S2-6, after pigment applies, the underlying structure in making is carried out online defect inspection and film thickness inspection with the on-line retrieval device.Certainly, this inspection can off line be implemented.
In step S2-7, the underlying structure in making is annealed.
In step S2-8, form inorganic protective layer 14 by sputtering sedimentation.
In step S2-9, because adhering to second of manufacturing, the pigment recording medium coils on the edge of substrate L1, therefore utilize spin coating that the second dish substrate L1 that makes is cleaned.
In step S2-10, after cleaning the edge, utilize to be spin-coated on to form protective seam 10 on the inorganic protective layer 14.
In step S2-11, after sputter, separately the second dish substrate L1 is carried out the on line quality inspection with the on-line retrieval device, simultaneously, finish the manufacturing of the second dish substrate L1.
In step S3-1, the first dish substrate L0 and the second dish substrate L1 lay respectively at the mode combination in the outside with first substrate 1 and second substrate 11.When the first dish substrate L0 and the second dish substrate L1 in conjunction with the time, obtain transparent intermediate layer 8 (8a, 8b).
In step S3-2, after combination, with the on-line retrieval device single-surface double-layer optical record medium that obtains is carried out the on line quality inspection, thereby finish the manufacturing of single-surface double-layer optical record medium.
According to the foregoing description,, therefore can prevent that translucent reflective layer from suffering erosion owing on first reflection horizon 3 of adopting translucent reflective layer to make, be formed with protective seam 9.Further,, therefore can prevent inorganic protective layer 14 cracks, thereby the durability of inorganic protective layer 14 is improved, and helps in conjunction with preceding operation owing on inorganic protective layer 14, form protective seam 10.
Though describe the present invention with reference to the preferred embodiments of the present invention of selecting for illustrating purpose, but the present invention is not limited to these embodiment obviously, as long as do not breaking away under essence spirit of the present invention and the scope, those skilled in the art can make various improvement to the present invention.
For example, according to design and specification, protective seam 9,10 can be translucent reflective layer or inorganic protective layer.
In addition, the production method of the single-surface double-layer optical record medium according to second embodiment of the invention shown in Figure 6 also can enough Fig. 4 and device shown in Figure 5 carry out.Because this purpose, need to install in the aftertreatment that a device comes the edge cleaning process after sputter equipment 27 and 28 is handled in production line and form protective seam 9,10.
Production line can suitably improve according to installing space or other condition, is not limited to the structure among first and second embodiment.
According to the present invention, because first recording layer and second recording layer are stacked not in prior art, just do not need to form middle layer and groove yet, can also improve the output of single-surface double-layer optical record medium simultaneously, and not need to improve existing equipment with soft pressing mold.
In addition, can also prevent the erosion or the crack that for example before in conjunction with first recording layer and second recording layer, in reflection horizon and inorganic protective layer, produce.
The present invention may be used on comprising the optical record medium of first recording layer and second recording layer, and can be by means of writing down from optical record medium one side incident and beam reflected and reproducing.For example, the present invention can be applied to optical recording disc, for example DVD+R/RW, DVD-R/RW and DVD-RAM.Especially, the present invention is effective for not needing to improve the production single-surface double-layer optical record medium that current production devices just can high yield.
Present patent application is based on the right of priority of the No.2004-298728 of the Japanese patent application No.2004-084750 of on March 23rd, 2004 application and application on October 13rd, 2004, at this full content of quoting the two as a reference.
Claims (10)
1. method of producing optical record medium, described optical record medium comprises first recording layer and second recording layer, and can be by writing down from described optical record medium one side incident and beam reflected and reproducing, described method comprises the steps:
In first substrate, apply, make first reflection horizon and described first recording layer of edge cleaning formation by pigment successively by sputter;
In second substrate, apply, make inorganic protective layer and described second recording layer of edge cleaning formation by first sputter, pigment successively by second sputter; And
In conjunction with described first recording layer and described second recording layer, first reflection horizon of described first recording layer is in the face of the inorganic protective layer of described second recording layer, and described first substrate and described second substrate are positioned at the outside.
2. method according to claim 1, wherein:
In the step that forms described second recording layer, form second reflection horizon of described optical record medium by described first sputter.
3. method according to claim 1, wherein:
In the step that forms described first recording layer, after applying, described pigment anneals; And
In the step that forms described second recording layer, after applying, described pigment anneals.
4. method according to claim 1, wherein:
After described edge at least one step that forms described first recording layer and described second recording layer cleans, form protective seam.
5. method according to claim 1 is characterized in that, checks after the step of step that forms described first recording layer and described second recording layer of formation.
6. device that is used to produce optical record medium, this optical record medium comprises first recording layer and second recording layer, and can be by writing down from optical record medium one side incident and beam reflected and reproducing, described device comprises:
First production line is configured to apply and make first reflection horizon by sputter by pigment successively in first substrate form described first recording layer;
Second production line is configured to apply and make inorganic protective layer by second sputter by first sputter, pigment successively in second substrate form described second recording layer; And
The 3rd production line is configured in conjunction with described first recording layer and described second recording layer, and first reflection horizon of described first recording layer is in the face of the inorganic protective layer of described second recording layer, and described first substrate and described second substrate are positioned at the outside; With
The edge cleaning device is configured to carry out the edge cleaning and carries out the edge cleaning after forming described second recording layer after forming described first recording layer.
7. device according to claim 6, wherein:
Described second production line forms second reflection horizon of described optical record medium by described first sputter.
8. device according to claim 6 also comprises:
Annealing device is used for annealing after described pigment when forming described first recording layer and second recording layer applies.
9. device according to claim 6 also comprises:
Protective seam forms device, be used for form described first recording layer and second recording layer at least one time described edge clean the back and form protective seam.
10. device according to claim 6 also comprises:
Testing fixture is used to check described first recording layer and described second recording layer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004084750 | 2004-03-23 | ||
| JP084750/04 | 2004-03-23 | ||
| JP298728/04 | 2004-10-13 |
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| CN1697052A CN1697052A (en) | 2005-11-16 |
| CN100359582C true CN100359582C (en) | 2008-01-02 |
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| CNB2005100716845A Expired - Fee Related CN100359582C (en) | 2004-03-23 | 2005-03-23 | Method and device for fabricating optical recording medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011091634A1 (en) * | 2010-01-27 | 2011-08-04 | 东莞宏威数码机械有限公司 | Single side double layers disc and manufacturing method thereof |
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| CN1697052A (en) | 2005-11-16 |
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