JP4112279B2 - Method for producing a multi-sided replication original plate with an uneven pattern - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to multi replication original version manufacturing method of the concavo-convex pattern amplicon original part is multifaceted with to replicate the optically variable pattern such as is formed uneven pattern sheet such as a hologram or diffraction grating .
[0002]
[Prior art]
Conventionally, hologram copying methods are disclosed in Japanese Patent Publication No. 6-85103, Japanese Patent Publication No. 6-85104, Japanese Patent Publication No. 7-104600, and the like.
FIG. 5 is a diagram showing an example of a hologram duplicating device, and FIG. 6 is an enlarged view showing the vicinity of the transfer device of the device of FIG.
In the hologram duplicating device 10, a paper feeding device 20, a transfer device 30, an irradiation device 50, and a winding device 60 are sequentially disposed on a pair of main body frames 12 fixed to the bed 13.
[0003]
The sheet feeding device 20 includes a shaft 22 rotatably supported by a roller 23 fixed to the main body frame 12, and a winding roll 21 of the hologram forming film 1 is attached to the shaft 22. It is connected to a powder brake (not shown).
[0004]
The transfer device 30 includes an embossing roller 31 in which a shaft 32 is rotatably supported by a bearing fixed to the central portion of the main body frame 12, a pressing roller 40 that is rotatably supported by a pair of arms 42, and a pressure mechanism. And 38.
The pressurizing mechanism 38 includes a pair of arms 42 and an air cylinder 45. An attachment 47 is attached to the tip of the piston rod 46 of the air cylinder 45, and the attachment 47 is connected to the center lower portion of the arm 42 via a pin 48. The air cylinder 45 is rotatably supported by a pin 49 fixed to the main body frame 12.
The pair of arms 42 is fixedly connected by a rod 44 and is rotatably supported by pins 43 fixed to the main body frame 12.
[0005]
Accordingly, the operation of the piston rod 46 of the air cylinder 45 causes the arm 42 to rotate with the pin 43 as a fulcrum, and the pressing roller 40 is pressed against the embossing roller 31.
The pressing roller 40 is equipped with a heating device (not shown) so as to heat the surface of the pressing roller 40.
[0006]
As shown in FIG. 5, the embossing roller 31 is provided with a hologram original plate 4 on its peripheral surface, and a resin plate is used as a hologram original plate attached to the peripheral surface of the cylinder. The tip of the embossing roller 31 on the driving side of the shaft 32 is connected to driving means (not shown). The embossing roller 31 is equipped with a cooling device (not shown), and cools the roller surface.
[0007]
The irradiation device 50 is fixed to the main body frame 12 via a support member (not shown) at a position facing the winding roller 51 that is rotatably supported by the main body frame 12 at a distance. The hologram forming film 1 wound around is irradiated with ultraviolet rays or electron beams.
[0008]
The winding device 60 includes a shaft 62 rotatably supported on a roller 63 fixed to the main body frame 12, and a powder clutch (not shown). The hologram forming film 1 can be wound around the shaft 62. It has become.
[0009]
Further, between the embossing roller 31 and the paper feeding device 20, guide rollers 71 and 72 supported rotatably on the main body frame 12, between the embossing roller 31 and the winding roller 51, A guide roller 73 is provided in the vicinity of the embossing roller 31.
[0010]
Next, the operation of the hologram duplicating apparatus 10 described above will be described. First, the hologram forming film 1 fed out from the paper feeding device 20 is guided to the embossing roller 31 via the guide rollers 71 and 72. At this time, the hologram forming film 1 is adjusted to an appropriate tension by the bower brake.
[0011]
Next, the film 1 is pressed against the embossing roller 31 with a constant pressure by the pressing roller 40 by the operation of the air cylinder 45. Since the surface of the pressing roller 40 is heated, the resin layer 3 is softened, and the unevenness of the hologram master 4 is transferred to the resin layer 3 as shown in FIG. In this state, the embossing roller 31 is rotated by the drive motor, and the resin layer 3 with the unevenness is peeled off from the hologram master 4 in the vicinity of the guide roller 73.
[0012]
At this time, since the surface of the embossing roller 31 is cooled, the resin layer 3 in the softened state is hardened to some extent, and even if the resin layer 3 is peeled off from the hologram original plate 4, the next winding roller does not break the uneven shape at the time of transfer. Guided to 51. The film 1 wound around the winding roller 51 is irradiated with ultraviolet rays or electron beams from the irradiation device 50, and the resin layer 3 with the unevenness is cured. Here, since the winding roller 51 is cooled, it is possible to prevent the film 1 from being heated and thermally contracted by irradiation with ultraviolet rays or an electron beam.
[0013]
Thereafter, the film 1 is wound around a shaft 62 connected to the drive motor 14. At this time, since the film 1 is adjusted to an appropriate tension by the bower clutch, the film 1 is wound without causing wrinkles or the like.
[0014]
[Problems to be solved by the invention]
In the hologram duplicating apparatus 10 described above, a hologram master (replica master) 4 is attached to an embossing roller 31. Since this hologram duplication master 4 has a plurality of unit duplication master portions duplicated on multiple sides by a hologram master of a predetermined size, there is a problem that the boundary line is recognized.
[0015]
An object of the present invention is to provide a method for producing a multi-sided replication original plate having a concavo-convex pattern in which a portion to which a boundary line of a multi-sided unit replication original plate part is transferred is inconspicuous.
[0019]
[Means for Solving the Problems]
In order to solve the above problems, a first aspect of the present invention, by using the concavo-convex pattern master of predetermined dimensions uneven pattern type is formed, the amplicon original unit to produce a plurality continuously formed multifaceted replication master A method for producing a multi-sided replication original plate having a concavo-convex pattern, the first application step of applying a molding material to a base member for a replication original plate, and the concavo-convex pattern original plate on the molding material applied in the first application step A first molding step of stacking and curing the molding material to produce a first unit replication original plate portion, and applying a molding material so as to overlap one end portion of the first unit replication original plate portion The step of forming the second unit replica original plate portion is performed by moving and laminating the concavo-convex pattern original plate on the molding material applied in the second application step and the second application step, and curing the molding material. And 2 molding steps. Which is a method for producing a multi replication master of the uneven pattern characterized.
[0020]
According to a second aspect of the invention, in the method for manufacturing a multi replication master of the concavo-convex pattern according to claim 1, wherein the first coating step, the forming from one end of the concavo-convex pattern master in the first molding step A method for producing a multi-sided replication original plate having a concavo-convex pattern, characterized in that an amount of resin protruding is applied.
[0021]
According to a third aspect of the present invention, in the method for manufacturing a multi-sided replication original plate of the concave / convex pattern according to the first or second aspect , the second forming step is configured to connect one end portion of the concave / convex pattern original plate to the first A method for producing a multi-sided replication original plate having a concavo-convex pattern, characterized in that it is stacked on the other end of the unit replication original plate portion.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.
FIG. 1 is a diagram showing an embodiment of a method for producing a multi-sided replica original plate with concavo-convex pattern according to the present invention, FIG. 2 is a diagram showing an embodiment of a concavo-convex pattern replicated plate according to the present invention, and FIG. It is a figure for demonstrating the mask used for the manufacturing method of a pattern replication plate.
[0023]
The manufacturing method of this embodiment includes a first application step STEP (hereinafter simply referred to as S) 1, a first lamination step S2, a first curing step S3, a second application step S4, 2 laminating step S5 and the like.
[0024]
In the first coating step S1, as shown in FIG. 1A, an acrylic, methacrylate, or other UV curable resin 82 is used as a molding material on a replication original base member 91 with a film thickness of 10 to 30 μm. This is a process of laminating 91 and the base plate 81 for the duplicate master. As the base member 81 for the replication original plate, a PET film having a width of about 20 to 100 cm, a length of about 50 to 100 cm, and a length of about 100 μm and an adhesive process, a polycarbonate film, or the like is used.
[0025]
The first laminating step S2 is a step of laminating a hologram original 91 that is an optically variable pattern (uneven pattern) on the UV curable resin 82 applied in the first applying step S1. This original plate 91 is a plate having a predetermined dimension (about 10 to 30 cm in length × about 5 to 20 cm in width) on which an optical variable pattern mold is formed, and has a fine emboss pattern of a hologram having a film thickness of about 10 to 30 μm on the surface thereof. A mold (the height of the embossed pattern is several 10 to several 100 nm) is formed.
[0026]
In the first curing step S3, as shown in FIG. 1B, the UV curable resin 82 is irradiated with UV 92 having an irradiation intensity of about 40 mw / cm ² for about 5 to 10 seconds. This is a step of producing a first unit replica original plate portion 83-1 by curing.
At this time, as shown in FIG. 3, the UV curable resin 82 has a protruding portion A (protruding width W1 = about 5 to 50 mm), and by applying a mask 93 to this portion, the protruding portion of the UV curable resin 82 is provided. Only A is uncured. The reason why the mask 93 is used to shield the light is to supply the UV curing resin 82 in advance so that the UV curing resin 82 is not insufficient, so that the excessively thick UV curing resin 82 is not cured. is there.
The width W of the mask 93 is preferably equal to or greater than the width of the original 91.
[0027]
The second application step S4 is a step of applying a UV curable resin 82-2 so as to overlap with one end of the first unit replica original plate portion 83-1 as shown in FIG. 1 (c).
The amount of the UV curable resin 82-2 may be substantially the same as that in the first application step S1, but is dropped so as to overlap one end portion (right end portion) of the first unit replica original plate portion 83-1.
[0028]
The second laminating step S5 is a step of laminating the original 91 by moving it by a predetermined distance on the UV curable resin 82-2 applied in the second applying step S4.
At this time, the other end portion (left end portion) of the original 91 is laminated so as to overlap with one end portion (right end) of the first unit duplication original plate portion 83-1 by an overlap width W2 = about 5 to 50 mm. It is desirable.
[0029]
Although the illustration of the second curing step is omitted, it is the same as the first curing step S3 of FIG. 1B, and the UV curable resin 82-2 is cured, and as shown in FIG. The unit replica original plate part 83-2 is prepared. In the same manner, a plurality of third unit duplication original plate parts 83-3,...
[0030]
As shown in FIG. 2, the multi-sided copying original 80 produced as described above has one end B of the adjacent first unit duplicating original 83-1 having a second unit duplicating original 83-2. The other end portion C is superimposed in a scale shape. Accordingly, since the second unit duplication original plate portion 83-2 overlaps the first unit duplication original plate portion 83-1, the plate surface is always on the upper side, and it does not get crushed and becomes a beautiful joint. For example, if the emboss patterns of the first unit replica original plate portion 83-1 and the second unit replica original plate portion 83-2 are overlapped, the accuracy of the hologram will be lowered.
In addition, a boundary line D between the adjacent first unit duplication plate portion 83-1 and second unit duplication plate portion 83-2 is formed in a wave shape at a predetermined interval. The wavy boundary line D has the effect of making it difficult to visually recognize the presence of the boundary line D there.
[0031]
Therefore, when the multi-sided replication original plate 80 is wound around the embossing roller 31 of FIG. 5, the duplicated sheet 1 has the boundary lines of adjacent unit hologram patterns formed in a wave shape at a predetermined interval. The height of the overlapping portion of the first unit duplication original plate portion 83-1 and the second unit duplication original plate portion 83-2 is about 20 to 30 μm, and the boundary line of the transferred sheet 1 is the same as that described above. There is also a wavy effect, and it is almost unknown even if it is visually touched or touched.
[0032]
The present invention is not limited to the embodiment described above, and various modifications and changes are possible, and these are also within the equivalent scope of the present invention.
[0033]
(1) In the embodiment of FIG. 2, an example in which unit duplication original plate portions 83-1, 83-2, 83-3,... However, as shown in FIG. 4, it is further arranged in the form of a matrix such as unit duplication original plate sections 83-1-1, 83-1-2, 83-1-3,. May be.
[0034]
(2) As described in the example of the fine embossed pattern of the hologram, it includes all optical variable patterns called OVD (optical variable device) such as a light diffraction pattern and a grain having fine irregularities of 2 to 10 μm.
[0035]
(3) As described in the example of producing a hologram replication master for producing a tint block or a continuous pattern, if the UV curable resin material is changed to a hard material, the joint is smoothed and the optical fiber having a fine uneven pattern on the surface It can also be used as a replicated plate for producing a polishing tape or the like.
[0036]
【The invention's effect】
As described above in detail, according to the present invention, since the portion to which the boundary line of the multi-faceted unit duplication original plate portion is transferred is inconspicuous, it is possible to produce a continuous uneven pattern sheet and produce with good yield. There is an effect that becomes possible.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of a method for producing a multi-sided replication original plate with a concavo-convex pattern according to the present invention.
FIG. 2 is a view showing an embodiment of a multi-sided replication original plate with a concavo-convex pattern according to the present invention.
FIG. 3 is a view for explaining a mask used in the method for producing a concavo-convex pattern replica according to the present embodiment.
FIG. 4 is a view showing another embodiment of a multi-sided replication original plate with a concavo-convex pattern according to the present invention.
FIG. 5 is a diagram illustrating an example of a hologram duplicating apparatus.
6 is an enlarged view showing the vicinity of the transfer device of the apparatus of FIG.
[Explanation of symbols]
80 hologram multi-sided copy original plate 81 copy original plate base 82-1, 82-2 UV curable resin 83-1 first unit copy original plate portion 83-2 second unit copy original plate portion 83-3 third unit copy original plate Part 91 Original 92 UV
93 Mask

Claims (3)

Using a concavo-convex pattern original plate having a predetermined dimension in which a concavo-convex pattern mold is formed, a method for producing a concavo-convex pattern multi-face replication original plate for producing a multi-face replication original plate in which a plurality of unit duplication original plate portions are continuously formed,
A first application step of applying a molding material to the base member for a replica original plate;
A first molding step of laminating the concavo-convex pattern original plate on the molding material applied in the first application step, curing the molding material, and producing a first unit replica original plate portion;
A second application step of applying a molding material so as to overlap one end of the first unit replica original plate portion;
A second molding step in which the concave / convex pattern original plate is moved and laminated on the molding material applied in the second coating step, and the molding material is cured to produce a second unit replica original plate portion;
The manufacturing method of the multi-surface replication original plate of the uneven | corrugated pattern characterized by providing. In the manufacturing method of the multi-surface replication original plate of the uneven | corrugated pattern described in Claim 1 ,
In the first coating step, a method for producing a multi-sided replication original for a concavo-convex pattern, wherein an amount of the molding resin protruding from one end of the concavo-convex pattern original in the first molding step is applied. In the manufacturing method of the multi-surface replication original plate of the uneven | corrugated pattern described in Claim 1 or Claim 2 ,
In the second forming step, the one-sided portion of the concavo-convex pattern original plate is laminated so as to overlap the other end portion of the first unit duplication original plate portion.

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