TW201301277A - Method for manufacturing film laminate and apparatus using same - Google Patents

Abstract

According to the present invention, a multi-layered laser disk recording medium may be manufactured with increased efficiency and at a reduced cost. A film laminate (multi-layered recordable structure) is manufactured by winding and punching a film at a rewind core portion. By manufacturing the multi-layered recordable structure by winding and punching, n units of the multi-layered recordable structure may be manufactured corresponding to the number n of surfaces (punching surfaces) disposed at the rewind core portion. Therefore, manufacturing efficiency for the multi-layered laser disk recording medium may increase.

Description

Method and device for manufacturing thin film laminated body

The present technology relates to a method for producing a film laminate for an optical disk recording medium, and a device for producing the film laminate.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2011-76686

A disc recording medium (hereinafter, simply referred to as a disc) for recording/reproducing information by irradiation of light is widely used.

In the optical disc, there are a plurality of discs which are formed in a manner of having a plurality of recording layers.

In order to fabricate a multilayer disc, for example, a reflective film and a recording material are formed on a substrate on which a groove is formed, and an intermediate layer material → groove transfer → hardening treatment → a reflective film is repeatedly applied to the recording material. The steps of film formation → film formation of the recording material → coating of the intermediate layer material → groove transfer → are performed until the desired number of recording layers are formed.

However, such a prior art optical disc manufacturing method has many steps and is inefficient. Therefore, it is difficult to suppress an increase in manufacturing cost.

On the other hand, the present applicant has proposed, for example, that the intermediate layer (spacer layer) and the resin layer (recording layer) are repeatedly laminated as shown in the above-mentioned Patent Document 1, and the interfaces are recorded as objects. Multilayer disc.

In the multilayer optical disc described in Patent Document 1, the interface between the intermediate layer and the resin layer functions as a reflecting surface due to the difference in refractive index between the layers. Thereby a focus servo can be applied to the interface. That is, any interface can be selected from a plurality of interfaces. Recording of the plural positions in the depth direction, that is, multi-layer recording, can be realized by sequentially recording the thus selected interface as an object.

According to the multilayer optical disc described in Patent Document 1, a structure for realizing multi-layer recording (hereinafter referred to as a multi-layer recording structure) can be formed only by repeatedly laminating an intermediate layer and a resin layer, so that it is not necessary The step of forming a reflective film or the like on each layer as in the case of the prior multilayer optical disc.

Further, in the optical disc described in Patent Document 1, the reference surface for the servo (selective reflection film 3) on which the position guide is formed is provided, and the tracking laser for the objective lens is collected by collecting the laser light for the servo on the reference surface. Control does not require the formation of grooves for each interface. Therefore, the step of forming the grooves of each layer can be omitted.

In these respects, according to the multilayer optical disc described in Patent Document 1, the manufacturing efficiency can be improved as compared with the conventional multilayer optical disc.

However, in the case of forming a multi-layered recording structure, the multilayer optical disk described in Patent Document 1 is also laminated one by one in the same manner as in the case of the previous multilayer optical disk (refer to paragraph [0032] of Patent Document 1] ][0033]). Therefore, at this point, efficiency cannot be improved with respect to the prior manufacturing method.

An object of the present invention is to improve the manufacturing efficiency of a multilayer optical disc recording medium and to reduce the manufacturing cost.

In order to solve the above problems, the present invention provides the following method as a method of manufacturing a thin film laminate for an optical disk recording medium.

That is, the manufacturing method of the present technology includes a winding step of winding a film by a plurality of turns by a winding core having a flat surface on its outer circumference.

Further, the manufacturing method includes a punching step of punching the film wound around the winding core portion by the winding step on the plane.

Further, in the present technology, the apparatus for producing a thin film laminated body for an optical disk recording medium is configured as follows.

That is, the production apparatus of the present technology includes a film delivery portion that feeds a film obtained by winding a film onto the film.

Moreover, the winding portion of the film wound and conveyed by the film feeding portion is wound by a winding core having a flat surface on the outer circumference.

Further, a punching portion for punching the film wound around the winding core portion on the flat surface is provided.

As described above, in the present technology, the film is wound a plurality of times by the winding core portion, and is punched to form a film laminate (multilayer recording structure).

By forming the multi-layer recording structure by the winding and punching methods as described above, n multi-layer recording structures can be produced at a time based on the number n of planes (punching surfaces) formed on the winding core portion. Compared with the prior manufacturing method, the manufacturing efficiency can be improved.

According to the present technology, as described above, in the manufacture of a multilayer optical disc recording medium, compared with the prior art in which a layer is laminated on each disc, it is possible to manufacture Increased efficiency. That is to say, the manufacturing cost of the multilayer optical disc recording medium can be reduced.

Hereinafter, embodiments of the present technology will be described.

In addition, the description is made in the following order.

<1. Example of a multilayer optical disc recording medium that should be manufactured> <2. First embodiment> [2-1. Configuration of Winding/Cutting Apparatus of First Embodiment] [2-2. Manufacturing method of the first embodiment] <3. Second embodiment> <4. Third embodiment> <5. Fourth embodiment> <6. Change example> [6-1. About the number of planes and the shape of the corners] [6-2. About peeling of basement membrane] [6-3. About improvement in operability] [6-4. About the transfer of grooves] [6-5. Others] <1. Example of a multilayer optical disc recording medium that should be manufactured>

Fig. 1 is a cross-sectional view showing a cross-sectional structure of a multilayer optical disk recording medium (which is a multilayer optical disk 1) to be manufactured by the method for producing a surface layer body of the embodiment.

First, as a premise, the multilayer optical disc 1 of the present embodiment is used as a disc-shaped optical recording medium, and is subjected to laser light irradiation by a rotationally driven multilayer optical disc 1 to perform mark recording (information recording). Again, as a record of information It is also performed by irradiating the multi-layer optical disc 1 that is rotationally driven with laser light.

As shown in FIG. 1, in the multilayer optical disc 1 of the present embodiment, the cover layer 2, the multilayer recording structure 3, the reflective film 4, and the substrate 5 are sequentially formed from the upper layer side.

Here, the term "upper layer side" as used herein refers to the upper layer side when the surface on which the laser light from the side of the optical disk device for recording/reproducing the multilayer optical disk 1 is incident is the upper surface. Further, in the figure, the incident direction of the laser light from the side of the optical disk device is indicated by an arrow symbol Lin.

The cover layer 2 is made of a resin such as polycarbonate, and is provided to protect the multilayer recording structure 3 formed on the lower surface side thereof.

The multilayer recording structure 3 is an interface L having a plurality of first films and second films, and is configured as a structure capable of achieving multilayer recording.

In the case of this example, the interface L is an interface between the first film and the second film having different refractive indices, and functions as a reflecting surface.

Further, in the case of this example, at least one of the first film and the second film forming the interface L is formed of a material which forms a mark in the vicinity of the light collecting point in accordance with the light collected by the recording laser light (hereinafter, it will be as such) The material of the nature is recorded as a recording material).

In the multilayer recording structure 3 as described above, since the interface L functions as a reflecting surface, the focus servo can be selectively applied to each interface L (the introduction of the focus servo).

Or by applying a focus servo having the interface Ln as a target, the recording laser light is collected by the attachment of the laser light at the interface Ln, whereby at least one of the first film and the second film forming the interface Ln can be formed. The side forms a recording mark.

At this time, as the recording mark, a mark formed by the deformation of the interface L or a modulation mark of the refractive index is considered.

In the case where the recording mark formed by the deformation of the interface L is formed, for example, the Young's modulus of the first film or the like is set higher than the Young's modulus of the second film, and deformation is likely to occur. In this case, as the recording material, a material which generates thermal expansion in the vicinity of the condensing point of the recording laser light may be selected.

Further, in the case of forming a mark which is modulated by the refractive index, a material which generates a refractive index modulation in the vicinity of the focus of the recording laser light is used as the recording material. As an example, a material which has the resin listed below as a main component is mentioned, for example:

1) Thermosetting resin (epoxy resin, etc.)

2) Thermosetting resin (epoxy resin, etc.) + nonlinear photo-sensing additive

3) The skeleton of the thermosetting resin has a nonlinear light sensation constructor

4) Thermoplastic resin (polycarbonate, etc.)

5) Thermoplastic resin (polycarbonate, etc.) + nonlinear photo-sensing additive

6) The skeleton of the thermoplastic resin has a nonlinear light sensation constructor

Example 1) A multiphoton absorption material such as an amorphous polyarylate resin described in Reference 1 below

Example 2) A photon absorption material containing a resin as described in Reference 2 below as a main component

7) Those containing the acid generator additive in the above 1) to 6)

. Reference 1 (Japanese Patent Laid-Open Publication No. 2010-162846)

. Reference 2... Japanese Patent Laid-Open Publication No. 2009-274225

In the case of using the materials listed above as a recording material, The refractive index modulation generated near the focused spot of the light is caused by decomposition or polymerization caused by photochemical reaction, thermal decomposition caused by light absorption, or thermal decomposition or polymerization caused by heat transfer from other heat sources.

Further, the materials of the above 2), 3), 5), and 6) are exemplified by various combinations of effects caused by nonlinear light absorption (especially, an effect of forming a mark smaller than a recording beam spot).

Here, in FIG. 1, the number of the interfaces L formed in the multilayer recording structure 3 is six as L1 to L6. However, the number of the interfaces L is not limited to this. .

For example, in fact, more interfaces L of about 20 to 30 are formed, and the recording capacity of the previous multilayer optical disc is expanded.

At this time, the distance (interval) in the depth direction between the respective interfaces L is ensured to be at least about 5 μm or more (more preferably 10 μm or more) in order to prevent crosstalk in the depth direction. In other words, when the multilayer recording structure 3 is formed by alternately laminating the first film and the second film, the film thickness of the first film and the second film is set to be at least about 5 μm or more. (more preferably 10 μm or more).

In the lower layer side of the multilayer recording structure 3 having a plurality of interfaces L formed as described above, a reflecting surface (hereinafter referred to as a reference surface Ref) for forming a tracking servo on the upper surface side is formed. Substrate 5.

The position guide is formed on the reference surface Ref in a spiral shape, for example, and the tracking servo for the recording laser light can be realized by performing the tracking servo control of the objective lens based on the position guide.

In the case of this example, the position guide as the reference plane Ref is formed with a guide. Groove. That is, a groove (continuous groove) or a pit row (intermittent groove) is formed.

The substrate 5 is formed by injection molding or the like using a stamper for transferring such a guide groove, and examples of the material for forming the same include polycarbonate.

The reflective film 4 is formed on the side on which the guide groove is transferred, and the surface side of the reflective film 4 is joined to the interface side of the multilayer recording structure 3.

Fig. 2 is a view for explaining the recording method of the multilayer optical disc 1.

The multilayer optical disc 1 having the configuration described above is irradiated with laser light (reference surface servo laser light) different from the wavelength band thereof, together with the recording laser light for forming the recording mark.

As shown in the figure, the laser light for the recording and the laser light for the reference surface servo are irradiated to the multilayer optical disc 1 via the shared objective lens.

Here, in the multilayer optical disc 1, on the respective interfaces L which are the reference of the focus servo at the time of recording of the marks, position guides using pits or grooves are not formed. Therefore, when the recording of the mark is not formed, the tracking servo using the reflected light from the interface L cannot be performed.

According to this point, the tracking servo at the time of recording is performed using, for example, laser light for reference plane servo. In other words, by performing a tracking error signal based on the reflected light of the reference surface servo laser light condensed on the reflective film 4 (reference surface Ref), and based on the tracking error signal, the tracking servo control for the objective lens is performed. The position of the spot light of the recording laser light irradiated through the objective lens can be controlled at an appropriate position in conjunction with the position of the spot light of the reference surface servo laser light.

In addition, the focus servo for laser light for recording is based on The reflected light of the surface L is performed. However, in the case where a short pulse laser is used for the recording laser based on the reason that the power of the laser light for recording requires a relatively high power, it is not desirable to use the laser light for recording. Focus servo for reflected light. The reason is that the noise corresponding to the pulse illumination overlaps with the focus error signal, so that it is very difficult to achieve stable focus control. In this case, in the system using the short-pulse laser as the recording laser, the focus servo for the recording laser light is irradiated with the laser light for the focus servo (the same wavelength band as the recording laser light). The objective light is controlled by the reflected light of the laser light for the servo.

Further, in order to focus the reference surface servo laser light on the reference surface Ref, the focus position of the reference surface servo laser light can be independently adjusted from the recording laser light side. For example, by setting a mechanism for changing the collimation state (converging/parallel/divergence) of the laser light incident on the reference surface of the objective lens, the focus position of the laser light for the reference surface servo can be independently adjusted from the laser light side for recording. Just fine.

<2. First embodiment>

[2-1. Configuration of Winding/Cutting Apparatus of First Embodiment]

3 and 4 are views for explaining the winding/punching device 10 of the first embodiment.

3 shows the configuration of the winding/punching mechanism portion 11 provided in the winding/punching device 10, and FIG. 4 shows the overall configuration of the winding/punching device 10.

First, in FIG. 3, the winding/punching mechanism portion 11 provided in the winding/punching device 10 of the present embodiment is provided with a winding core portion 15, a film roll rotating portion 16, a feed roller 17, and a feed roller. 18, punching jig 19, and die cutting Drive unit 20.

As shown in the figure, a film roll 21 is attached to the film roll rotating portion 16. Specifically, the film roll 21 is attached to the film roll rotating portion 16 at its core portion 21A. Thereby, the film roll 21 is rotationally driven in accordance with the rotation of the film roll rotating portion 16.

The film wound around the film roll 21 is fed to the winding core portion 15 by the feed roller 17 and the feed roller 18 as shown in the drawing, and is wound by the winding core portion 15.

In the figure, the direction of rotation of the film roll rotating portion 16, the feed roller 17, the feed roller 18, and the winding core portion 15 at this time is indicated by an arrow.

The winding core 15 has at least a plurality of planes on its outer circumference. Specifically, the winding core portion 15 in this case has four flat surfaces on its outer circumference and has a substantially quadrangular prism shape.

The respective planes of the winding core portion 15 function as a surface (hereinafter referred to as a punching surface) punched by the punching jig 19 as will be described below. For example, in the case where the multilayer optical disc 1 is manufactured into a disc having a diameter of 12 cm, the lengths of the planes and the horizontal lengths are each ensured to be 12 cm or more.

The punching jig 19 is held by the punching drive unit 20 so as to be driven in the punching direction (two-way arrow symbol) in the drawing.

The punching jig 19 is driven by the punching drive unit 20 on the side close to the winding core portion 15, and the film (that is, the film laminated body) wound by the winding core portion 15 is punched into a disk shape.

Although not shown in FIG. 3, the winding/punching mechanism unit 11 is provided with a rotation motor 11A, a punching drive motor 11B, and a sense of rotation as shown in FIG. Detector 11C.

The winding core portion 15, the film roll rotating portion 16, and the feed rollers 17 and 18 shown in Fig. 3 are configured to be rotationally driven by the rotation motor 11A, whereby the winding core portion 15 and the film roll rotating portion 16 are formed. The feed rollers 17, 18 are rotationally driven at the same rotational speed.

Further, the punching drive motor 11B functions as a power source for driving the punching jig 19 as the punching drive unit 20.

In FIG. 4, a rotation drive circuit 25, a punch drive circuit 26, a system controller 27, an operation unit 28, and a display unit 29 are provided outside the winding/punching mechanism unit 11.

The rotation drive circuit 25 applies a drive signal to the rotation motor 11A based on an instruction from the system controller 27 to rotationally drive the winding core portion 15, the film roll rotating portion 16, and the feed rollers 17, 18.

Moreover, the punching drive circuit 26 applies a drive signal to the punching drive motor 11B based on an instruction from the system controller 27, and performs a punching operation by the punching jig 19.

The system controller 27 is configured by, for example, a microcomputer including a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). The overall control of the winding/punching device 10 is performed based on various arithmetic processing or control processing stored in, for example, the above-described ROM.

For example, in response to an operation input by a worker or the like via the operation unit 28, an instruction is made to the rotation drive circuit 25 to wind the core portion 15 and thin. The control of the start/stop of the rotational driving of the film winding rotating portion 16 and the feed rollers 17, 18 or the execution of the punching by the punching jig 19 is performed in accordance with the instruction of the punching drive circuit 26.

The detection information of the rotation sensor 11C is input to the system controller 27.

The rotation sensor 11C detects the rotation speed or the rotation angle of the rotation motor 11A, and gives the system controller 27 the result.

The system controller 27 controls the rotation drive circuit 25 in accordance with the rotation speed information supplied from the rotation sensor 11C, whereby the rotation speed control such that the rotation speed is constant at a specific speed can be performed.

Further, the system controller 27 counts the number of rotations of the winding core portion 15 or the like based on the rotation angle information supplied from the rotation sensor 11C. Further, based on the result of counting the number of rotations, various kinds of rotation control for automatically stopping the corresponding rotation angle information such as the rotation of the winding core portion 15 or the like can be performed.

Further, the system controller 27 can display various kinds of information such as the rotational speed information or the number-of-rotation information on the display unit 29.

[1-2. Manufacturing method of the first embodiment]

In the first embodiment, a thin film laminate which is to be the multilayer recording structure 3 is formed by using one film.

Specifically, the film laminate is formed by winding a film obtained by preliminarily bonding a first film which is to be the first film and a second film which is to be the second film in advance. Body. That is, the film roll 21 shown in FIG. 3 is obtained by winding the laminated film of the first film and the second film.

Here, specifically, the case of this example, the first film (the blank of the figure) The film is composed of an intermediate layer material (spacer material), and the second film (a film having a pattern in the figure) is formed of a recording material.

A specific manufacturing method will be described with reference to Figs. 5 and 6 .

First, the method of starting the winding of the winding core 15 will be described with reference to Fig. 5 .

At the start of winding, as shown in Fig. 5A, at the end of the plane which is the plane (cut surface) of the winding core 15, the film which is extended from the film roll 21 via the feed rolls 17, 18 is fixed. Front end.

At this time, the fixation of the film can be carried out, for example, by the following.

In the case of this example, the punched surface of the winding core portion 15 is formed in such a manner that the longitudinal and transverse lengths thereof are larger than the punching diameter of the punching jig 19 (i.e., leaving a margin), so even if it is as described above The end of the cut surface is followed by a film, and the subsequent portion of the film can still be located in the blank portion of the die cut. That is, at this point, the peeling of the thin film laminate can be performed.

Alternatively, the fixing of the film may be carried out using a fixing jig (not shown).

Here, the alignment of the start position of the winding as described above may be manually performed by an operator or the like, or may be automatically performed by a processor (not shown).

As described above, from the state of the fixing film, as shown in Fig. 5B, the winding core portion 15 is rotated to wind the film.

At this time, the system controller 27 preliminarily memorizes the rotation angle information of the winding core portion 15 when the rotation of the winding core portion 15 is started. Based on the rotation angle information at the start of the rotation, the number of rotations of the winding core portion 15 (or even the number of film winding cycles) can be counted.

Here, for example, as the interface L of the multi-layer recording structure 3, When the number is 20, the number of windings is set to 10. That is, the number of windings at the time of forming the interface L of the specific number N is N/2.

Fig. 6 is a view for explaining the steps after winding of the film.

After the film from the film roll 21 is wound for a specific number of weeks, the system controller 27 performs punching using the punching jig 19 (Fig. 6A).

Here, in the case where it is necessary to perform the process of hardening the thin film laminated body (which should be the laminated body of the multilayer recording structural body 3) formed by winding, as long as the winding of a certain number of times is completed, for example, as described above, For example, the curing treatment by ultraviolet irradiation or the like may be performed.

Alternatively, the hardening treatment may be carried out, for example, one by one, every one week.

In the case of this example, since there is only one punching mechanism, the punching system performs the punching of the winding core 15 one by one for each punching surface.

At this time, in accordance with the completion of the winding of the film of the specific number of times as described above, the film is cut by a cutter (not shown) to prevent the filming of the film of a specific number of times or more (that is, the formation of an interface exceeding a certain number is prevented). L treatment).

The system controller 27 instructs the punching drive circuit 26 when the rotation angle of the winding core portion 15 coincides with the angle at which the punching jig 19 can be punched, thereby performing punching by the punching jig 19.

At the time of the punching, it is desirable to perform the control of stopping the rotation of the winding core 15 or lowering the rotation speed.

The system controller 27 performs control processing for performing such punching for each of the punching faces of the winding core 15. As a result, in the case of this example, four thin film laminates (which should be a laminate of the multilayer recording structure 3) can be obtained.

After the film laminate is obtained by punching, a step of attaching the substrate 5 on which the reference surface Ref (reflection film 4) is formed is attached to the film laminate (FIG. 6B).

In the case of this example, a step of generating the substrate 5 on which the reference surface Ref is formed is performed, unlike the step of using the winding/punching device 10. The attaching step shown in FIG. 6B is a step of attaching the thin film laminate obtained by the above-described punching step to the adhesive layer 6 in the drawing by the substrate 5 on which the reference surface Ref is formed in advance.

Here, as the adhesive layer 6, for example, an ultraviolet curable resin or the like is used. In this case, the ultraviolet curing resin is applied by a spin coating method or the like on the reference surface Ref, and the hardening treatment by ultraviolet irradiation is performed while the thin film laminated body is pressed thereon. achieve.

At this time, the refractive index of the subsequent layer 6 is the same as that of the first film made of the intermediate layer material. Therefore, for example, as shown in the figure, when the surface on which the second film (recording material film) of the film laminate obtained by the above-described punching step is formed is attached to the substrate 5 as the lowermost portion, the lowermost portion can be formed. Interface L. Or conversely, in the case where the lowermost portion is used as the first film, it is possible to prevent formation of an unnecessary interface (reflecting surface) irrespective of recording.

By the substrate attaching step, the multilayer recording structure 3 shown in FIG. 1 and the structure in which the reference surface Ref (reflecting film 4) and the substrate 5 are formed on the lower layer side can be obtained.

After the attaching step of the substrate 5 is performed, a lamination step of the cover layer 2 is performed (Fig. 6C).

The lamination step of the cover layer 2 can be carried out, for example, by a spin coating method or a bonding of a sheet or the like.

In the manufacturing method according to the first embodiment described above, the film is wound by the winding core portion 15 a plurality of times, and is punched to form a multilayer recording structure having a specific number of interfaces L (multiple layers can be formed) The film structure to be recorded) is manufactured based on the multilayer recording structure.

By forming the multi-layer recording structure by the winding/punching method as described above, n number of multi-layer recording structures can be produced at a time corresponding to the number n of planes (punching surfaces) formed on the winding core portion 15, thereby Compared with the prior manufacturing method, the manufacturing efficiency can be improved. That is, as a result, the manufacturing cost of the multilayer optical disc recording medium can be reduced.

Further, in the first embodiment, the film roll 21 in which the first film and the second film are overlapped in advance is used, whereby only one rotating portion of the film roll is sufficient, so that the winding/punching device can be simplified. The composition.

Further, by forming the winding core portion 15, the film winding rotating portion 16, and the rotational speeds of the respective rollers 17, 18 at a constant speed, it is possible to prevent wrinkles or accidental cutting of the film.

<3. Second embodiment>

Fig. 7 is a view for explaining the configuration of the winding/punching device of the second embodiment.

In addition, the winding/punching device of the second embodiment differs from the winding/punching device 10 of the first embodiment mainly in the configuration of the winding/punching mechanism portion. Only the configuration of the winding/punching mechanism portion of the winding/punching device of the second embodiment (the rotation motor 11A, the cutting drive motor 11B, and the rotation sensor 11C are not shown).

Winding/cutting mechanism portion of the second embodiment and winding of the first embodiment/ The punching mechanism unit 11 is different in that a film roll rotating unit 30 is provided instead of the film roll rotating unit 16, and a film roll rotating unit 31, a feed roller 32, and a feed roller 33 are added.

In this case, the film winding drive units 30 and 31 and the feed rollers 32 and 33 are also rotationally driven together with the rotary drive winding core unit 15 and the feed rollers 17 and 18 by the rotation motor 11A. Speed rotation.

As shown in the figure, the first film roll 34 is attached to the film roll rotating portion 30 at the core portion 34A thereof, and the second film roll 35 is attached to the film roll rotating portion 31 at the core portion 35B thereof.

In the case of this example, the first film roll 34 is formed by winding a first film made only of an intermediate layer material. Further, as the second film roll 35, a second film formed of only a recording material is wound and formed.

By using the winding/punching device of the second embodiment in which the first film roll 34 and the second film roll 35 are attached, the winding by the specific number of winding cores 15 and the punching are performed. By punching with the jig 19, a film laminate (which should be a film laminate of the multilayer recording structure 3) similar to the case of the first embodiment can be obtained.

That is, the multilayer optical disc 1 shown in Fig. 1 can be manufactured by performing the same adhesion step and overlay lamination step as those described above with reference to Figs. 6B and 6C by the thin film laminate obtained as described above.

According to the second embodiment, it is possible to produce n multi-layer recording structures at a time in accordance with the number n of the punching faces formed in the winding core portion 15, and it is possible to reduce the manufacturing cost of the multilayer optical disk recording medium.

<4. Third embodiment>

Fig. 8 is a view for explaining the configuration of a winding/punching device according to a third embodiment.

Further, the winding/punching device of the third embodiment is mainly different from the winding/punching device of the second embodiment in the configuration of the winding/punching mechanism portion, so that only the FIG. 8 The configuration of the winding/punching mechanism portion included in the winding/punching device of the third embodiment (the rotation motor 11A, the cutting drive motor 11B, and the rotation sensor 11C are not shown).

The winding/punching mechanism portion of the third embodiment is different from the winding/punching mechanism portion 11 of the second embodiment shown in Fig. 7 in that the film roll driving portion 31 and the feed roller are omitted. 33, a coating film drum 36, a container 37 for storing the recording material 38, and a doctor blade 39 are provided instead.

Also in this case, the first film roll 34 in which the first film is wound and composed of the intermediate layer material is attached to the film roll rotating portion 30.

In the case of the third embodiment, the rotation driving coating drum 36 is also rotationally driven together with the winding core portion 15, the feed rollers 17, 18, the film roll driving portion 30, and the feed roller 32 by the rotation motor 11A.

In the third embodiment, the recording material 38 is applied as a coating film to the first film made of an intermediate layer material by the same method as the so-called micro gravure coating method.

The doctor blade 39 adjusts the thickness of the recording material 38 attached to the surface of the coating film drum 36 in accordance with the rotation of the coating film drum 36.

The recording material 38 whose film thickness is adjusted by the doctor blade 39 is continuously applied as a coating film to the first film (intermediate layer material) fed from the feed roller 32 in response to the rotation of the coating film drum 36.

The first film to which the recording material 38 is applied is sent to the winding core portion 15 by the feed rollers 17 and 18, and is wound by the winding core portion 15.

In this case, after the winding of the specific number of weeks by the winding core portion 15 is completed, punching of each of the punching faces is performed using the punching jig 19.

As a result, according to the third embodiment, the multilayer optical disc 1 shown in Fig. 1 can be manufactured by the winding/punching method, and further reduction in manufacturing cost can be achieved.

Here, by using the recording material 38 as a coating film as in the third embodiment, the amount of the recording material 38 used can be suppressed, and further reduction in manufacturing cost can be achieved.

In the case of the method of winding a recording material film in a roll shape as in the second embodiment, for example, it is necessary to secure a certain thickness to the strength or the like during cutting by the feed roller. According to the method of applying the coating film as in the third embodiment, the film thickness of the recording material 38 can be suppressed to the minimum necessary, and the consumption of the unnecessary recording material 38 can be suppressed.

Further, at this time, the coating film may not be applied to the entire surface of the film, and only the portion which is punched into a disk shape may be applied. Thereby, the consumption of the recording material 38 can be further suppressed.

In the case of applying a film to a film transferred from a film roll as in the case of the third embodiment, as a method of starting winding by the winding core portion 15, for example, the second one is considered. In other words, at least the film roll driving unit 30, the feed roller 32, and the coat roller 36 are rotated before the winding of the winding core portion 15, and the application of the recording material 38 to the first film is performed in advance until the recording material 38 is applied. Paint The film is sufficient to reach the length of the winding core portion 15, and the method of fixing the front end portion of the coating film to the winding core portion 15 to start winding or the like is applied.

<5. Fourth embodiment>

Fig. 9 is a view for explaining the configuration of the winding/punching device of the fourth embodiment.

Further, the winding/punching device of the fourth embodiment is mainly different from the winding/punching device of the third embodiment in the configuration of the winding/punching mechanism portion, and therefore, in FIG. Only the configuration of the winding/punching mechanism portion of the winding/punching device of the fourth embodiment (the rotation motor 11A, the cutting drive motor 11B, and the rotation sensor 11C are not shown).

In the winding/punching mechanism portion of the fourth embodiment, the coating drum 40, the container 41 for storing the recording material 42, and the doctor blade are added to the winding/punching mechanism portion in the third embodiment shown in FIG. 43.

In this case, the first film roll 34 around which the first film made of the intermediate layer material is wound is attached to the film roll rotating portion 30.

In this case, the coating drum 40 is also configured together with the rotary drive winding core 15, the feed rollers 17, 18, the film roll drive unit 30, the feed roller 32, and the coat roller 36 by the rotation motor 11A. Rotate the drive.

Here, the recording materials used in the fourth embodiment are two types. Hereinafter, in order to clarify the difference, the recording material 38 is referred to as a first recording material 38, and the recording material 42 is referred to as a second recording material 42.

In the winding/punching device according to the fourth embodiment of the above configuration, the second recording material 42 is applied as a coating film to the first film made of the intermediate layer material together with the first recording material 38. And, the shape of each recording material is thus coated The first film in the state is wound by the winding core portion 15 by a specific number of weeks, and then punched by the punching jig 19.

According to the winding/punching device of the fourth embodiment, a film laminate which is a multilayer recording structure having a plurality of interfaces L can be produced. In other words, according to the fourth embodiment, the multilayer optical disc 1 shown in Fig. 1 can be manufactured by the winding/punching method, thereby reducing the manufacturing cost of the multilayer optical disc recording medium.

In the case of the fourth embodiment, when the refractive index of the first recording material 38 is different from the refractive index of the second recording material 42, the boundary surface of the recording material can be used as the interface L as the reflecting surface. (Record the surface of the concentrated object of the laser light). As a result, a refractive index modulation mark can be formed on both sides of the upper side and the lower side of the interface L.

In the first embodiment in which the interface L is a boundary surface between the intermediate layer material and the recording material, the mark which is modulated by the refractive index is formed only on one side of the interface L, but the first one is as described above. When the boundary surface between the recording material 38 and the second recording material 42 is the interface L, the interface L can be sandwiched to form refractive index modulation marks on both sides. That is to say, the degree of modulation can be improved.

In the above description, the case where the two types of recording material coating films are laminated on the same side of the film is exemplified, but the recording material coating film may be applied to the front and back surfaces of the film, respectively. Winding laminate.

Further, even in this case, by applying the coating film only in a necessary region as described in the third embodiment, it is possible to suppress the consumption of the recording material and to further reduce the manufacturing cost.

<6. Change example>

Although the embodiments of the present technology have been described above, the present technology is not limited to the specific examples described so far.

Hereinafter, various modifications of the present technology will be described.

[6-1. About the number of planes and the shape of the corners]

In the description so far, although the number of planes (punching planes) of the winding core portion for winding the film is exemplified, the number of planes to be formed by winding the core portion should not be limited to This one.

As an example, an explanatory view of the winding core portion 45 in which the number of planes is two is shown in FIG.

As shown in FIG. 10A showing the state at the start of winding, and FIG. 10B showing the state after the start of winding, it is understood that the film laminate can be formed in the same manner as in the respective embodiments, in the case where the number of planes is two.

Further, as shown in Fig. 10A, in the case where the film is wound at the start of the film, the end portion of the film which is extended by the feed roller 46 disposed in front of the film is fixed to the end of the punching surface of the winding core portion 45. From the state of the part, the winding core 45 (and the feed roller 46, etc.) is started to rotate and the winding of the film is started. In this case, the rotation angle information at the time of starting the winding is also memorized in advance and the number of weeks of winding is counted.

Here, on the surface where the manufacturing efficiency is improved, the number of planes of the winding core portion is preferably as large as possible. However, increasing the number of planes leads to an increase in the size of the winding core (the number of planes n ≧ 3).

Fig. 11 is a view for examining the relationship between the number of planes of the winding core and the size of the winding core.

As shown in Fig. 11, the length of the plane of the winding core portion is a, the radius of the winding core portion is r, and the number of planes is n (n ≧ 3), which is relative to the plane. The relationship of the size (r) of the winding core of the number n is expressed as:

According to this [Formula 1], it is understood that it is not preferable to set the number of planes in which only the device efficiency is prioritized in the point of preventing the size of the apparatus. Based on this point, the number n of planes should be set to the most appropriate value in consideration of both the improvement in manufacturing efficiency and the enlargement of the device.

Further, if the number n of planes is too small, the corners connecting the planes become acute angles, and the degree of adhesion of the film is lowered in the vicinity of the corner portions, which causes problems such as wrinkling of the film. If this point is considered, it can be said that the number n of the planes of the winding core is preferably.

However, this point is not applicable to the case where the curved core portion 45 is constructed by the curved connecting planes as shown in FIG. That is, as long as the planes are connected to each other by a curved surface, the adhesion of the corners can be alleviated according to the curvature of the curved surface.

[6-2. About peeling of basement membrane]

Here, in the case where the film thickness is thin, in order to prevent breakage of the film or the like, there is a case where the film roll wound in a state in which the base film is adhered is sold as a product. For example, in the case of a film product having a film thickness of about 50 μm or less, a film roll vendor in a state in which a base film is adhered is Mainstream.

In the case of using such a film roll with a base film attached thereto, it is provided to peel off the base film before being wound by the winding core.

Fig. 12 is a view showing an example of a structure of a peeling base film.

In the figure, the winding core portion 15 having the number of planes = 4 is used as the winding core portion, and the film to be wound is in a state in which the first film and the second film are overlapped in advance as in the case of the first embodiment. The case of a film. Further, in the figure, only the portion related to the structure for peeling off the base film is mainly taken, and the other portions are omitted.

For example, in the example of the figure, the base film 50 for peeling off the base film is provided at a position facing the feed roller 18. The base film peeled off by the roller 50 can be wound by the base film winding drum 51.

In this case, a subsequent sheet is attached to the surface of the drum 50, and the base film is peeled off in the subsequent sheet.

Further, instead of the drum 50, a configuration in which a winding rotating portion for winding the subsequent sheet roll of the sheet is wound may be employed. In this case, the base film winding drum 51 is used to wind the base film together with the succeeding sheet following the base film.

[6-3. About improvement in operability]

Although not particularly mentioned in the description so far, for example, in the case where the thickness of the multilayer recording structure 3 is small in the case where the number of the interfaces L is small (the number of layers of the film is small) is small, the punching is considered. The deterioration of the operability of the film laminate becomes a problem.

In order to improve the operability of the film laminate after punching, for example, The technique shown in FIG. FIG. 13 shows an example in which the winding core portion 15 is used as an example.

First, as shown in FIG. 13A, a laminated body composed of the substrate 5, the reflective film 4, and the adhesive layer 6 is placed on each of the punched surfaces of the winding core portion 15. In the state in which the end portions of the film extending through the feed roller 18 are fixed to the end portions of the laminated body placed on the desired punching surface among the laminated bodies thus placed, the winding by the winding core portion 15 is started.

After the winding of the specific number of weeks is completed, as shown in FIG. 13B, the substrate 5 including the thin film laminate and the lower layer side, the reflective film 4, and the subsequent layer 6 are punched by the punching jig 19 on the punching surface. The whole of the laminate. Thereby, the operability of the laminated body after punching is improved.

In addition, as long as the operability is improved, the film may be wound on a specific base material (substrate), and the base material is not limited to the laminated body using the substrate 5, the reflective film 4, and the adhesive layer 6.

[6-4. About the transfer of grooves]

In the above description, a case where a position guide such as a groove is not formed on the interface L is exemplified, but for example, for the purpose of improving the accuracy of the tracking servo for the recording laser light, etc. A position guide is formed on L.

Fig. 14 is an explanatory view showing a configuration for transferring a groove as a position guide on the interface L.

The transfer of the grooves uses a stamper 55. On the transfer surface of the stamper 55, for example, a convex portion for forming a groove is formed in a spiral shape. In this case, the stamper 55 is used to form the hole of the center hole of the disc while the groove is being transferred, because On the other hand, a central portion of the stamper 55 is formed with a convex portion.

Further, in order to correspond to such a stamper 55, as the winding core portion in this case, a winding core portion 56 having a positioning hole 56A formed in each of the punching faces as shown in the drawing is used. The positioning hole 56A is formed to be a convex portion for forming a center hole formed in the stamper 55, whereby the position of the transfer position of the groove can be performed.

Fig. 15 is an explanatory view of a transfer method of a groove realized by the configuration shown in Fig. 14.

In this case, each time the film is wound by the winding core portion 56, the stamper 55 is driven in the direction close to the punching surface, and the groove is transferred to the newly wound film. 15A to 15C show the evolution from the state in which the new film is wound up to the state in which the groove is transferred onto the new film.

At this time, since the positioning hole 56A which is formed in the convex portion of the stamper 55 is provided on the punching surface, the transfer position of the groove for each film (layer) can be made uniform.

At this time, by performing the transfer by the stamper 55 (formation of the center hole), the chips of the punched film are accumulated inside the positioning hole 56A as shown in FIG. 15B, but for the punching chips, The configuration of the recovery mechanism for recycling is additionally provided to prevent unnecessary accumulation in the positioning holes 56A.

In addition, in FIG. 15, the number of the film wound by one winding core 56 is set to 1, and the groove is transferred to each interface L, but it is once shown, for example, as exemplified in each embodiment. In the case of winding two kinds of films, even if the groove transfer is performed every week as described above, it is not possible to form a groove on each interface L. Specifically, a groove is formed on every other interface L.

However, even if no groove is formed in each interface L, if one groove is formed in the multilayer recording structure 3, the tracking servo can be obtained as compared with the case of using the servo of the reference surface Ref. Increased accuracy. The tracking servo accuracy of the laser light for recording using the servo of the reference plane Ref is mainly reduced according to the separation distance between the focus position of the laser light for recording and the focus position of the laser light for tracking servo, so The tracking servo of the groove formed in the multilayer recording structure 3 closer to the reference surface Ref can improve the accuracy as compared with the tracking servo using the reference surface Ref.

Further, as a method for transferring a groove on each interface L in a case where two or more types of films are wound once, for example, it may be carried out separately on each film before bonding of the films. Groove transfer method, etc.

[6-5. Others]

Here, the configuration for positioning the groove transfer position described with reference to Fig. 14 or Fig. 15 can also be applied to punching by the punching jig 19.

In other words, the positioning of the punching position can be performed by using the winding core portion 56 having the positioning hole 56A in the same manner and forming the convex portion for forming the center hole in the punching jig 19.

In the above description, the case where only one punching jig is used is exemplified, but a plurality of punching jigs may be provided, and the punching of the plurality of portions may be simultaneously performed by these.

Further, although it is exemplified that only one portion is punched on one punching surface, the size of one punched surface may be increased, and the plurality of portions may be punched on one punched surface.

For example, if the punched surface is set to a size that can be m punched, one can be Sub-production (m × n) of multi-layer recording structures, and further improvement in manufacturing efficiency.

Further, in the description so far, although a film laminate is produced by using two film rolls at the maximum, it is needless to say that three or more film rolls can be used to form a film laminate.

In the above description, a method of winding a film (or a coating film) having a different refractive index when forming an interface L functioning as a reflecting surface is exemplified, but it may be used to display by performing a specific process. The film (or coating film) composed of a material having a refractive index change imparts a refractive index change after the event, and finally forms an interface L.

For example, in the case of using a film made of a resin, the upper surface and the lower surface of the film are colored by irradiation treatment such as infrared rays or ultraviolet rays, ion beam treatment, plasma treatment, or the like as the specific treatment. Thereby, the refractive index change is imparted.

Alternatively, the refractive index change may be imparted by using the film as a film containing a specific additive, and performing the above-described specific treatment or the like on the film.

Further, in the description so far, the case where the layer made of the intermediate layer material is inserted into the film laminate is exemplified, but the film laminate may be formed only of the layer composed of the recording material. In this case, as long as the materials having different refractive indices are used as the respective recording materials, the multilayer optical disc 1 having a plurality of interfaces L functioning as the reflecting surfaces can be produced.

In this case, when only one film roll is used as in the first embodiment, a film roll wound in a state in which the film composed of the recording materials is superposed is used as the film roll. Or even if you do not use a coincident film, only For example, a film of a recording material having a region exhibiting a refractive index change by performing a specific treatment as described above on the side of at least one of the upper surface or the lower surface thereof is subjected to the specific processing by winding the core portion. In the latter film configuration, a thin film laminate having an interface L functioning as a reflecting surface can be produced.

Further, although not particularly mentioned in the description so far, the rotational speed of the punched core portion or each of the rollers may be constant during the winding period, and may be changed.

For example, as an example of a changeable condition, in order to improve the adhesion of the film of the corner portion of the punched core portion, a method of lowering the rotation speed at the corner portion may be mentioned. In this case, the determination of the corner portion and the portion other than the corner portion is performed based on the rotation angle information.

Further, when the film thickness of each layer of the multilayer recording structure 3 is uniform, light reflected on the target interface L is reflected on the interface L formed on the upper layer side, and the reflected light causes the so-called Multiple interference concerns.

For example, in order to prevent such multiple interference, the thickness of each layer may be different, and the thickness of the coating film may be variably controlled by the doctor blade 39 in addition to the method of applying the coating film as in the third embodiment. The control of the thickness of the coating film can be achieved, for example, by adjusting the position of the doctor blade 39.

Alternatively, the thickness of each layer may be different by selectively winding a film having a plurality of film thicknesses.

Further, in the case of applying a coating film, as described in the third and fourth embodiments, the coating region of the coating film does not need to be a comprehensive film, and can be set as needed.

In addition to the use of a stamper, the transfer of the groove pattern may also be, for example. Nano imprinting and other methods are carried out.

Further, in the above description, the case where the reference surface Ref is formed in advance on the substrate 5 is exemplified, but in the formation of the reference surface Ref, a film in which the position guide is formed by winding the core may be used. technique.

Further, the present technology can be configured as shown in the following (1) to (30).

(1) A method for producing a film laminate, which is used in an optical disk recording medium, comprising: a winding step of winding a film by a plurality of turns by a winding core having a flat surface on the outer circumference; and A punching step of punching the film wound around the winding core on the plane in a step.

(2) The method for producing a film laminate according to (1) above, wherein in the winding step, the film is wound by the winding core having two or more of the flat surfaces.

(3) The method for producing a film laminate according to (1) or (2) above, wherein in the winding step, a plurality of films are wound by the winding core.

(4) The method for producing a film laminate according to the above (1) to (3), wherein in the winding step, the wound core portion is wound by winding a superposed film of the plurality of films The above-mentioned superposed film is sent out as a film roll.

(5) The method for producing a film laminate according to the above (1) to (3), wherein in the winding step, the first film and the second film roll are fed from a first film roll obtained by winding the first film. The second film fed from the wound second film roll is superposed on each other and wound by the winding core.

(6) The method for producing a film laminate according to the above (3), wherein the plurality of films are an interlayer film and a recording material film.

(7) The method for producing a film laminate according to the above (1) to (6), further comprising a step of applying a coating film to the film wound by the winding core.

(8) The method for producing a film laminate according to the above (7), wherein in the coating film application step, a recording material coating film is added to the film.

(9) The method for producing a film laminate according to any one of (1) to (8) above, wherein the winding core portion is formed with a registration hole for guiding a punching position of the punching step.

(10) The method for producing a film laminate according to any one of (1) to (9) above, wherein in the punching step, punching of a plurality of portions is performed on the one of the planes.

(11) The method for producing a film laminate according to the above (1) to (10), further comprising: the film wound around the winding core by the winding step The groove transfer step of the transfer groove.

(12) The method for producing a film laminate according to the above (11), wherein the winding core portion is formed with a registration hole for guiding a groove transfer position by the groove transfer step.

(13) The method for producing a film laminate according to the above (1) to (12), wherein the film to be wound in the winding step is wound up in a state in which a base film is attached, and In the winding step, the film is peeled off from the film which is in a state in which the base film is attached, and the film is wound by the winding core.

(14) The method for producing a film laminate according to the above (2) to (13), wherein each of the planes of the winding core portion is connected via a curved surface.

(15) The method for producing a film laminate according to the above (1) to (14), wherein, in the winding step, the film is wound in a state in which a specific base material is provided on the plane of the winding core And in the punching step, the laminated body of the base material and the film is die-cut.

(16) The method for producing a film laminate according to the above (15), wherein the base material is formed by a substrate including a reflective film formed with a position guide. By.

(17) A production apparatus for a disc recording medium, comprising: a film feed portion from which a film roll is fed out of the film; and a winding core having a flat surface on the outer circumference thereof a winding portion of the film fed by the film feeding portion; and a punching portion for punching the film wound around the winding core portion on the plane.

(18) The production apparatus according to (17) above, wherein the winding core portion is configured to have two or more of the flat surfaces.

(19) The apparatus according to the above (17) or (18), wherein the film feeding portion is configured to feed a plurality of types of films to the winding core portion.

(20) The production apparatus of (17) to (19), wherein the film feeding unit feeds the superposed film to the winding core portion from a film roll obtained by winding a superposed film of the plurality of types of films.

(21) The production apparatus of (17) to (19), wherein the film feeding portion includes: a first rotating portion that rotates the first film roll in which the first film is wound, and a second film winding a second rotating portion in which the second film roll is rotated; and the second rotating portion and the second rotating portion are respectively rotated by the rotation of the first rotating portion and the second rotating portion The first film is superposed on the second film, and is sent to the winding core.

(22) The apparatus according to the above (19), wherein the plurality of the thin films are an intermediate layer film and a recording material film.

(23) The production apparatus of (17) to (22), further comprising a coating film applying portion that adds a coating film to the film wound by the winding core portion.

(24) The production apparatus according to the above (23), wherein the coating film application portion adds a recording material coating film to the film.

(25) The manufacturing apparatus according to any one of (17) to (24) above, wherein the winding core portion is formed with a positioning hole for guiding a punching position of the punching portion.

(26) The manufacturing apparatus according to the above (17) to (25), wherein the punching portion has a plurality of punching jigs, and is configured to perform punching of a plurality of portions on the one of the planes.

(27) The manufacturing apparatus according to any one of (17) to (26) above, further comprising a groove transfer portion that is wound around the film transfer groove of the winding core portion.

(28) The manufacturing apparatus according to (27) above, wherein the winding core portion is formed with a positioning hole for guiding a groove transfer position of the transfer portion.

(29) The production apparatus of the above-mentioned (17) to (28), wherein the film roll is obtained by winding the film in a state in which a base film is attached; and the film delivery portion is in a state in which a base film is attached thereto. The film is formed by peeling and winding the base film.

(30) The manufacturing apparatus according to any one of (18) to (29) above, wherein each of the planes of the winding core portion is connected via a curved surface.

1‧‧‧Multilayer CD

2‧‧‧ Coverage

3‧‧‧Multilayer recording structure

4‧‧‧Reflective film

5‧‧‧Substrate

10‧‧‧Winding/punching device

11‧‧‧Winding/punching mechanism

11A‧‧‧Rotary motor

11B‧‧‧Cutting drive motor

11C‧‧‧Rotary Sensor

15‧‧‧Rolling core

16‧‧‧ Film roll rotating part

17‧‧‧Feed roller

18‧‧‧Feed roller

19‧‧‧Cutting fixture

20‧‧‧punching drive department

21‧‧‧ Film roll

21A‧‧‧ core

25‧‧‧Rotary drive circuit

26‧‧‧Cutting drive circuit

27‧‧‧System Controller

28‧‧‧Operation Department

29‧‧‧Display Department

30‧‧‧ Film roll rotating part

31‧‧‧ Film roll rotating part

32‧‧‧Feed roller

33‧‧‧Feed roller

34‧‧‧1st film roll

34A‧‧‧ core

35‧‧‧2nd film roll

35A‧‧‧ core

36‧‧·film roller

37‧‧‧ Container

38‧‧‧ Recording materials (first recording material)

39‧‧‧Scraper

40‧‧·film roller

41‧‧‧ Container

42‧‧‧ Recording materials (second recording material)

43‧‧‧Scraper

46‧‧‧Feed roller

50‧‧‧Roller

51‧‧‧Base film winding drum

55‧‧‧Molding

56‧‧‧Rolling core

56A‧‧‧Positioning holes

L‧‧‧ interface

Fig. 1 is a view showing a cross-sectional structure of a multilayer optical disk recording medium to be manufactured by the manufacturing method of the embodiment.

Fig. 2 is a view for explaining a recording technique of a multilayer optical disc recording medium of an embodiment.

FIG. 3 is a view showing a configuration of a winding/punching mechanism portion including the winding/punching device (the apparatus for producing a thin film laminated body) according to the first embodiment.

Fig. 4 is a view showing the overall configuration of a winding/punching device according to the first embodiment.

5A and 5B are views for explaining the technique of starting the winding of the film.

6A-C are diagrams for explaining the steps after winding of the film.

Fig. 7 is a view for explaining the configuration of the winding/punching device of the second embodiment.

Fig. 8 is a view for explaining the configuration of the winding/punching device of the third embodiment.

Fig. 9 is a view for explaining the configuration of the winding/punching device of the fourth embodiment.

Fig. 10 is an explanatory view showing a winding core portion in which the number of planes is two.

Fig. 11 is a view for examining the relationship between the number of planes of the winding core and the size of the winding core.

Fig. 12 is a view showing an example of a structure of a peeling base film.

Figs. 13A and 13B are explanatory views of a technique for improving the operability of a thin film laminated body after punching.

Fig. 14 is an explanatory view showing a configuration for transferring a groove as a position guide on the interface.

15A-C are explanatory views of a transfer technique using a groove realized by the configuration shown in Fig. 14.

11‧‧‧Winding/punching mechanism

15‧‧‧Rolling core

16‧‧‧ Film roll rotating part

17‧‧‧Feed roller

18‧‧‧Feed roller

19‧‧‧Cutting fixture

20‧‧‧punching drive department

21‧‧‧ Film roll

21A‧‧‧ core

Claims (17)

A method for producing a thin film laminate, which is used in an optical disk recording medium, comprising: a winding step of winding a film by a plurality of turns by a winding core having a flat surface on the outer circumference; and a winding step by the above winding step And the punching step of punching the film wound on the winding core portion on the plane. The method for producing a film laminate according to claim 1, wherein in the winding step, the film is wound by the winding core having two or more of the flat surfaces. The method for producing a film laminate according to claim 1, wherein in the winding step, a plurality of films are wound by the winding core. The method for producing a film laminate according to claim 3, wherein in the winding step, the wound core is wound by a film roll obtained by winding a film of the plurality of films . The method for producing a film laminate according to claim 3, wherein in the winding step, the first film fed from the first film roll formed by winding the first film and the second film formed by winding the second film After the second film fed out of the roll is superposed, it is wound by the winding core. The method for producing a film laminate according to claim 3, wherein the plurality of films are an interlayer film and a recording material film. A method of manufacturing a thin film laminate according to claim 1, wherein Furthermore, it comprises a coating film applying step of adding a coating film to the film wound by the winding core. The method for producing a film laminate according to claim 7, wherein in the coating film application step, a recording material coating film is added to the film. The method of producing a film laminate according to claim 1, wherein in the winding core, a registration hole for guiding a punching position of the punching step is formed. The method for producing a film laminate according to claim 1, wherein in the punching step, punching of the plurality of portions is performed on one of the planes. The method for producing a film laminate according to claim 1, further comprising a groove transfer step of winding the film transfer groove around the winding core portion by the winding step. The method of producing a film laminate according to claim 11, wherein the winding core is formed with a registration hole for guiding the groove transfer position of the groove transfer step. The method for producing a film laminate according to claim 1, wherein the film to be wound in the winding step is wound up in a state in which a base film is attached; in the winding step, one side is attached The film in the state of the base film is peeled off from the base film and wound, and the film is wound by the winding core. A method of manufacturing a thin film laminate according to claim 2, wherein Each of the planes of the winding core portion is connected via a curved surface. The method for producing a film laminate according to claim 1, wherein in the winding step, the film is wound in a state in which a specific base material is provided on the plane of the winding core; in the punching step, The laminate of the above base material and the above film is die-cut. The method for producing a film laminate according to claim 15, wherein the base material is formed by a substrate having a reflective film formed with a position guide. A manufacturing apparatus for a thin film laminated body for an optical disk recording medium, comprising: a film feeding portion for feeding a film obtained by winding a film from the film; and having a planar winding on the outer circumference thereof The core portion is wound around a winding portion of the film fed from the film feeding portion; and a punching portion that punches the film wound around the winding core portion on the plane.