JP2017140765A - Printing roll and method for manufacturing printing roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing roll which allows the cost and the time required for production and replacement to be reduced.SOLUTION: A printing roll 20 includes a cylinder 21, a resin reproduction plate 22 in a sheet form having bumps and dents corresponding to the surface pattern of an optical member, wound around the outer peripheral surface of the cylinder 21, and a junction member 26 for joining the outer surface of the cylinder 21 to the rear surface of the resin reproduction plate 22.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a roll plate and a roll plate manufacturing method.

  Conventionally, a technique has been proposed in which a fine surface pattern is formed on an optical member, and desired light is emitted using refraction and reflection. As a method for producing an optical member having such a fine surface pattern, there is a technique for forming a roll plate by fitting a sheet-like electroformed plate on which the surface pattern of the optical member is formed, into a metal roll through a sleeve. It is disclosed (for example, see Patent Document 1).

Japanese Patent No. 5518800

  Since the roll plate of Patent Document 1 requires a plurality of electroforming plates to be wound around the sleeve, the cost increases. Moreover, since the roll plate of patent document 1 needs to weld the seam of the electroforming plate wound around the sleeve, it takes time to produce. Furthermore, in the roll plate of Patent Document 1, when welding fails or the electroformed plate is damaged by welding, the electroformed plate is cut from the welded portion, and a new electroformed plate is wound around the sleeve and welded. There is a need to. Therefore, it takes time to replace the roll plate of Patent Document 1.

  An object of the present invention is to provide a roll plate and a roll plate manufacturing method capable of reducing cost and reducing time required for production and replacement.

The present invention solves the problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this. In addition, the configuration described with reference numerals may be improved as appropriate, or at least a part thereof may be replaced with another configuration.
The first invention includes a cylinder (30), a sheet-shaped resin replica (22) formed with irregularities corresponding to the surface pattern of the optical member, and wound around the outer peripheral surface of the cylinder, and the cylinder It is a roll plate (20) provided with the outer peripheral surface and the joining member (26) which joins the back surface of the said resin replication plate.
-2nd invention is the roll plate of 1st invention, The adjacent edge parts of the said resin replication plate (22) wound around the outer peripheral surface of the said cylinder (30) are in the circumferential direction of the said cylinder. It is a roll plate (20) characterized by facing through a gap (S).
-3rd invention is the roll plate of 1st or 2nd invention, The said resin replication plate (22) is a plate produced by making one unit type | mold part (22a) multifaceted, It is a roll plate (20) characterized by these.
-4th invention is a sheet-like resin replica plate (22) in which the unevenness | corrugation corresponding to the surface pattern of the said optical member was formed using the electroforming plate (37) which has a shape corresponding to the surface pattern of an optical member. A method for producing a roll plate, comprising: a resin replica plate manufacturing step for manufacturing the resin replica plate; and a resin replica plate winding step for winding the back surface of the resin replica plate around the outer peripheral surface of the cylinder (21) via a joining member (26). It is.
-5th invention is the manufacturing method of the roll plate of 4th invention. The electroforming plate production which produces the said electroforming plate (37) using the master plate (34) in which the surface pattern of the optical member was formed It is a manufacturing method of the roll plate characterized by including a process.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the roll plate and roll plate which can reduce the time which cost reduction and preparation and replacement | exchange can provide can be provided.

It is a figure explaining the light-guide plate. 2 is a perspective view of a roll plate 20. FIG. It is a figure explaining the stamper plate. It is a figure explaining the preparation process of the master plate. It is a figure explaining the preparation process of the electroforming plate. FIG. 5 is a diagram for explaining a manufacturing process of the stamper plate 22. FIG. 4 is a diagram illustrating the production of a roll plate 20. It is a figure explaining the joint of the stamper plate. It is a figure explaining the preparation process of the light-guide plate 10 using the roll plate.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the technical scope of the present invention is not limited to this embodiment. In the drawings used to describe the embodiments, the size, ratio, and the like of members are changed or exaggerated as necessary.

(Outline of the light guide plate 10)
First, the light guide plate 10 will be described. The light guide plate 10 is a sheet-like optical member manufactured using a roll plate 20 including a stamper plate 22 described later. The light guide plate 10 is used in, for example, a liquid crystal display device.
In this embodiment, a light guide plate is described as an example of the optical member. However, the optical member emits light by unevenness formed on the surface, such as a prism sheet, a lens sheet, a diffractive structure, or a moth-eye structure. All optical members to be controlled are targeted.
FIG. 1A is a plan view of the light guide plate 10. FIG.1 (b) is sectional drawing of the Ia-Ia arrow shown to Fig.1 (a).
The light guide plate 10 has a light control layer 12. The light control layer 12 is a sheet-like member having optical transparency. The light control layer 12 has an uneven portion 13 formed on at least one surface thereof.

  In the present embodiment, the concavo-convex portion 13 is constituted by minute concavo-convex formed alternately in the longitudinal direction. Specifically, as shown in FIG. 1B, the concavo-convex portion 13 is composed of convex portions 13 a having a rectangular cross section and concave portions 13 b having a rectangular cross section that are alternately formed in the longitudinal direction of the light control layer 12. Is done. In the uneven portion 13, this cross-sectional shape is formed one-dimensionally in the width direction of the light control layer 12. The unevenness constituting the uneven portion 13 is finely formed, and as an example, the depth of the recessed portion 13b is about 0.1 μm or more and 3.0 μm or less. The bottom width of the recess 13b and the top width of the projection 13a are about 1 μm or more and 30 μm or less.

  In addition, the shape of the uneven | corrugated | grooved part 13 is not restricted to this embodiment, Another form may be applied and a several aspect may be combined and used. As other uneven portions, for example, a shape having a predetermined cross section and extending obliquely with respect to the width direction of the light control layer, a plurality of conical convex portions are arranged vertically and horizontally in a plan view. The form etc. which have such a two-dimensional shape are mentioned.

  The light control layer 12 can be formed of various materials. For example, polymer resins having an alicyclic structure, methacrylic resin, polycarbonate, polystyrene, acrylonitrile-styrene copolymer, methyl methacrylate-styrene copolymer, ABS resin, polyethersulfone and other thermoplastic resins, epoxy Examples include acrylate and urethane acrylate-based reactive resins. These are widely used as materials for optical members such as a light guide plate, and have excellent mechanical characteristics, optical characteristics, stability, workability, and the like, and are available at low cost.

(Configuration of the roll plate 20)
Next, the roll plate 20 used when forming the light guide plate 10 will be described. FIG. 2 is a perspective view schematically showing the appearance of the roll plate 20. FIG. 3A is a plan view of the stamper plate 22 provided in the roll plate 20. FIG.3 (b) is an enlarged view of the part shown to Ib of Fig.3 (a).

  As shown in FIG. 2, the roll plate 20 includes a cylinder 21 and a stamper plate 22. The cylinder 21 includes a cylindrical cylinder body 21a and a rotating shaft 21b that protrudes along the axis from the end surface of the cylinder body 21a. The cylinder 21 can rotate around the rotation shaft 21b. The cylinder body 21a is a portion around which the stamper plate 22 is wound. Since it is necessary to ensure rigidity, the cylinder body 21a is preferably made of a ferrous material for machine structure. Further, among such iron-based materials, a material that can obtain a necessary adhesive force with the adhesive surface of a double-sided adhesive tape 26 (described later) is preferable. Further, the cylinder body 21a may have a cylindrical shape having bottom surfaces on both sides from the viewpoint of reducing the weight while ensuring the necessary rigidity. Further, the cylinder body 21a is provided with a circulating mechanism (not shown) of cold water, hot water, steam or high-temperature oil in the cylinder body so that the surface temperature can be adjusted.

  The stamper plate 22 is a sheet-like mold (resin replica plate) that can shape the shape of the uneven portion 13 of the light guide plate 10. As shown in FIG. 3A, the stamper plate 22 has a plurality of unit mold portions 22a arranged vertically and horizontally on the surface thereof. In the stamper plate 22 of the present embodiment, the unit mold portions 22a are arranged seamlessly.

  In addition, in FIG. 3, although the boundary of the adjacent unit type | mold part 22a was represented by the dotted line, this is represented in order to make arrangement | positioning of the unit type | mold part 22a easy to understand, and is not a substantial seam. As will be described later, the stamper plate 22 of the present embodiment is constituted by two stamper plates 22A and 22B joined together. Each stamper plate 22A and 22B includes a plurality of unit mold portions 22a as shown in FIG. Note that the stamper plate 22 may be a single sheet or a combination of three or more sheets. The number of sheets constituting the stamper plate 22 is appropriately selected depending on the size of one stamper plate, the outer peripheral length of the cylinder 21 to be wound, and the like.

  Such a stamper plate 22 can be produced by, for example, an electroforming plate. As will be described in detail later, the electroforming plate is composed of a laminate in which an electrolytic nickel plating layer is formed on a conductive layer. In the electroforming plate, an uneven pattern corresponding to the uneven portion 13 of the light guide plate 10 is formed on the surface of the conductive layer. In addition, here, the electroplating layer made of nickel and the conductive layer will be described, but other materials may be used. The stamper plate 22 is preferably provided with an alignment mark for positioning.

  Then, as shown in FIG. 2, the roll plate 20 is obtained by winding and fixing the stamper plates 22 </ b> A and 22 </ b> B around the outer peripheral surface of the cylinder 21. As shown in FIG. 2, the stamper plate 22 of the present embodiment has the joints between the end portions of the stamper plates 22 </ b> A and 22 </ b> B attached by a single-sided adhesive tape 23 (described later). The joints between the end portions of the stamper plates 22A and 22B are also on the opposite side of FIG. 2 and the joints (not shown) are also bonded by the single-sided adhesive tape 23. The pasting of the end portions of the stamper plates 22A and 22B will be described later.

(Preparation of stamper plate 22)
Next, a method for producing the stamper plate 22 will be described with reference to FIGS. In the present embodiment, an example in which an electroformed plate 37 is produced from a master plate 34 (resist plate) and a stamper plate 22 is produced from the electroformed plate 37 will be described. However, the stamper plate manufacturing method is not limited to the example of the present embodiment, and a stamper plate manufactured by another manufacturing method may be used.
FIG. 4 is a diagram for explaining a process for producing the master plate 34.
First, as shown in FIG. 4A, a resist layer 32 is formed in a thin film shape on a substrate 30. The substrate 30 is a plate-like member having necessary strength and surface accuracy, and is made of glass, metal, ceramic, synthetic quartz, plastic, or the like. A known resist can be used as the resist layer 32. For example, Nagase ChemteX Corporation GRX-M220, GRX-M100, etc. are mentioned. Hereinafter, a laminate including the substrate 30 and the resist layer 32 is referred to as a master plate producing laminate 33.

  Next, as shown in FIG. 4B, the resist layer 32 of the master plate preparation laminate 33 is exposed with a pattern based on the concavo-convex portion 13 of the light guide plate 10. In this embodiment, the exposure is performed by scanning with the laser beam L, but the exposure method is not particularly limited. In addition, scanning with an electron beam may be performed. By this exposure, a hardened easily soluble portion 32a and an unexposed portion 32b are formed in the resist resin constituting the resist layer 32. Then, as shown in FIG. 4C, the easily soluble portion 32a is removed by development by spray development or the like performed by spraying a developer. As a result, a master plate 34 having a resist layer (hereinafter also referred to as “resist pattern layer”) 320 patterned by the unexposed portion 32 b is obtained.

  Here, as a process for producing the resist pattern layer 320, a process using a so-called positive resist in which an exposed portion is removed has been described, but the process is not limited thereto. By changing the resist material, it is also possible to employ a process using a negative resist in which exposed portions remain and unexposed portions are removed.

  In this embodiment, the example in which the resist layer 32 is directly laminated on the substrate 30 has been described. However, the present invention is not limited to this. An intermediate layer that improves the adhesion of the resist layer 32 may be disposed between the substrate 30 and the resist layer 32. For example, when the substrate 30 is made of glass (quartz), a form in which a chromium layer (a surface low-reflection chromium layer or the like) is provided between the resist layer 32 may be used. When a chromium layer is provided as an intermediate layer, a conventional laminate for photoresist including etching can be applied as it is, and the adhesion of the resist layer 32 can be improved.

Next, an electroforming plate 37 is produced using the obtained master plate 34. FIG. 5 is a diagram for explaining a process for producing the electroforming plate 37.
First, as shown in FIG. 5A, an electroless nickel plating layer 35 (conductive layer) is formed by electroforming on the side of the substrate 30 on which the resist pattern layer 320 is formed. The thickness of the electroless nickel plating layer 35 is preferably 10 nm or more and 1 μm or less.

  Next, as shown in FIG. 5B, an electrolytic nickel plating layer 36 is formed on the electroless nickel plating layer 35 by electroforming. At this time, the electrolytic nickel plating layer 36 is formed so that the total thickness of the electroless nickel plating layer 35 and the electrolytic nickel plating layer 36 is about 0.3 mm. And as shown in FIG.5 (c), the electroforming plate 37 can be obtained by peeling the master plate 34. FIG. The electroforming plate 37 is provided with a concavo-convex pattern 38 corresponding to the concavo-convex portion 13 of the light guide plate 10.

Next, the stamper plate 22 is produced using the obtained electroformed plate 37. FIG. 6 is a diagram for explaining the manufacturing process of the stamper plate 22.
First, as shown in FIG. 6A, an uncured ultraviolet curable resin is filled between the base material layer 25 and the concavo-convex pattern 38 using the concavo-convex pattern 38 of the electroforming plate 37, and the resin pattern Layer 24 is formed. Thereby, the filled uncured ultraviolet curable resin has a shape corresponding to the unevenness of the resist pattern layer 320 (see FIG. 4C) formed on the master plate 34.

  Here, as the base material layer 25, for example, polyethylene terephthalate (PET) resin, polycarbonate (PC) resin, methyl methacrylate / butadiene / styrene (MBS) resin, methyl methacrylate / styrene (MS) resin, acrylic / styrene. (AS) resin, acrylonitrile butadiene styrene (ABS) resin, or the like can be used.

As the resin pattern layer 24, for example, an ultraviolet curable resin such as urethane acrylate, polyester acrylate, epoxy acrylate, polyether acrylate, polythiol, or butadiene acrylate can be used.
A release agent is added to the uncured ultraviolet curable resin. The release agent is a material that is added so that the stamper plate 22 can be easily released from the electroforming plate 37. As the mold release agent, a fluorine-type, silicon-type, phosphate ester-type release agent or the like can be used.

Next, as shown in FIG. 6A, the ultraviolet curable resin is cured by irradiating the resin pattern layer 24 with ultraviolet rays UV from the substrate layer 25 side. The shape of the resin pattern layer 24 having irregularities is fixed by irradiation with ultraviolet rays UV.
Subsequently, as shown in FIG. 6B, the base material layer 25 and the resin pattern layer 24 are released from the electroforming plate 37 to obtain the stamper plate 22. On the surface of the stamper plate 22, a mold capable of shaping the shape of the uneven portion 13 of the light guide plate 10 is formed.
In addition, it is good also as a stamper plate 22 as shown in FIG. 3 by connecting the unit die part 22a produced using one electroforming plate 37, and making it a multi-faced body. Further, the stamper plate 22 as the multi-faced body may be further enlarged.

(Preparation of roll plate 20)
Next, production of the roll plate 20 will be described. FIG. 7A is a diagram illustrating a state in which the stamper plate 22 is wound around the cylinder 21. FIG.7 (b) is sectional drawing of Ic-Ic arrow shown to (a). FIG. 7B schematically shows a partial cross section of the roll plate 20. FIG. 8A is a diagram schematically showing a longitudinal section of the roll plate 20. FIG. 8B is an enlarged view of a portion indicated by Id in FIG. FIG. 8B schematically shows the joint of the stamper plate 22.

  As described above, the stamper plate 22 of this embodiment is obtained by joining two stamper plates 22A and 22B. As shown in FIG. 7A, the outer peripheral surface 21c of the cylinder 21 and the back surfaces of the stamper plates 22A and 22B are pasted together with a double-sided adhesive tape 26 (joining member). The double-sided adhesive tape 26 is preferably made of a heat-resistant material. The thickness of the double-sided pressure-sensitive adhesive tape 26 is preferably in the range of 20 to 100 μm. As the double-sided adhesive tape 26, for example, Kapton double-sided tape NO. 760H (manufactured by Teraoka Seisakusho) or the like can be used.

  As shown in FIG. 7B, the double-sided adhesive tape 26 has one adhesive surface 26a bonded to the outer peripheral surface of the cylinder body 21a, and the other adhesive surface 26b bonded to the base material layer 25 of the stamper plate 22B. Yes. The stamper plate 22B is pasted by first pasting one adhesive surface 26a of the double-sided adhesive tape 26 to the outer peripheral surface of the cylinder body 21a, and then pasting the back surface of the stamper plate 22B to the other adhesive surface 26b of the double-sided adhesive tape 26. Also good. Alternatively, the other adhesive surface 26b of the double-sided adhesive tape 26 may first be attached to the back surface of the stamper plate 22B, and then one adhesive surface 26a of the double-sided adhesive tape 26 may be attached to the outer peripheral surface of the cylinder body 21a. In FIG. 7B, the cylinder 21 and the stamper plate 22 </ b> B are attached, but the cylinder 21 and the stamper plate 22 </ b> A are also attached in the same manner with the double-sided adhesive tape 26.

  Further, as shown in FIG. 8A, the joints between the end portions of the stamper plates 22A and 22B wound around the outer peripheral surface of the cylinder 21 face each other with a gap S therebetween. The interval of the gap portion S is appropriately set depending on the size, material, etc. of the stamper plate 22. As will be described later, in extrusion molding using the roll plate 20, the roll plate 20 is filled with a molten thermoplastic resin composition. Therefore, the stamper plate 22 is stretched mainly in the circumferential direction of the cylinder 21 due to the temperature rise. At this time, if the gap portion S is not formed at the joint between the end portions of the stamper plates 22A and 22B, the elongations of the stamper plates 22A and 22B overlap each other on the cylinder 21, and the stamper plate 22 is distorted. There is a risk. However, in the roll plate 20 of the present embodiment, even if elongation occurs in the circumferential direction of the stamper plates 22A and 22B due to a temperature rise, the elongation is absorbed by the gap portion S. Can be suppressed.

  Further, as shown in FIG. 8A, in the stamper plate 22, the joint between the end portions of the stamper plates 22 </ b> A and 22 </ b> B is formed at a position 180 degrees apart in the circumferential direction of the cylinder 21. As shown in FIG. 8B, the surface of the adjacent resin pattern layer 24 is bonded by a single-sided adhesive tape 23 at the joint between the end portions of the stamper plates 22 </ b> A and 22 </ b> B. The single-sided adhesive tape 23 is preferably made of a material having heat resistance, like the double-sided adhesive tape 26. Moreover, the thickness of the single-sided adhesive tape 23 has the preferable range of 20-100 micrometers. As the single-sided adhesive tape 23, for example, 3M polyimide tape # 5413 (manufactured by 3M) or the like can be used.

  In addition, the single-sided adhesive tape 23 is affixed between the unit mold | type parts 22a (refer FIG. 2) formed in each edge part of stamper plate 22A and 22B. Since the unevenness of the resin pattern layer 24 does not exist in this portion, the single-sided adhesive tape 23 affects the shape of the uneven portion 13 (see FIG. 1B) of the light guide plate 10 during molding described later. There is nothing. Moreover, the single-sided adhesive tape 23 is bonded together similarly to FIG.8 (b) also about the seam opposite to the part shown to Id of Fig.8 (a) (lower side).

  According to the roll plate 20 of the present embodiment described above, a plurality of stamper plates 22 (resin replica plates) wound around the cylinder 21 can be produced from one electroformed plate 37. Therefore, the roll plate 20 of this embodiment can reduce cost compared with the conventional roll plate in which a plurality of electroformed plates are wound around a sleeve. Further, in the roll plate 20 of the present embodiment, the outer peripheral surface of the cylinder 21 and the back surface of the stamper plate 22 are pasted with a double-sided adhesive tape 26. Therefore, the roll plate 20 of this embodiment can reduce the time required for production compared with the conventional roll plate in which the joint of the electroformed plate wound around the sleeve is joined by welding. When exchanging the stamper plate 22, the operator only has to peel off the stamper plate 22 from the surface of the cylinder 21 and attach a new stamper plate 22 to the outer peripheral surface of the cylinder 21 via the double-sided adhesive tape 26. Therefore, in the roll plate 20 of this embodiment, the time required for the operator to replace the stamper plate 22 can be reduced.

  In the roll plate 20 of the present embodiment, the joints between the end portions of the stamper plates 22A and 22B wound around the outer peripheral surface of the cylinder 21 face each other with a gap S therebetween. Therefore, according to the roll plate 20 of the present embodiment, the elongation of the stamper plates 22A and 22B due to the temperature rise at the time of molding is absorbed by the gap portion S, so that distortion of the stamper plate 22 can be suppressed.

  In the roll plate 20 of the present embodiment, a space between the outer peripheral surface 21c of the cylinder 21 and the back surface of the stamper plate 22 is pasted with a double-sided adhesive tape 26 (joining member). Therefore, the operator can affix the stamper plate 22 to the outer peripheral surface of the cylinder 21 in a short time. Further, the double-sided pressure-sensitive adhesive tape 26 is less expensive to work than welding, and no dedicated equipment is required, so the cost can be reduced.

(Production of the light guide plate 10)
Next, production of the light guide plate 10 using the roll plate 20 will be described. FIG. 9 is a diagram for explaining a manufacturing process of the light guide plate 10 using the roll plate 20.
As shown in FIG. 9, between the first roll 41 and the roll plate 20 disposed with a predetermined gap with respect to the first roll 41, the base sheet 50 is sequentially placed from the direction of the arrow Ie. Send it out. In addition, as the base material sheet 50, it is preferable to use a highly smooth sheet material such as PET. As the base material sheet 50, for example, PET film A4100 (manufactured by Toyobo Co., Ltd.) can be used.
Further, the molten thermoplastic resin composition 61 is caused to flow from the nozzle 62 between the base sheet 50 and the roll plate 20. The thermoplastic resin composition 61 is preferably supplied in a strip shape having the same size (width) as the size in the width direction of the first roll 41 and the roll plate 20. Thereby, it becomes possible to supply a material uniformly in the width direction of the roll plate 20.

  The thermoplastic resin composition 61 is caused to flow at a predetermined pressure between the first roll 41 and the roll plate 20. Thereby, the thermoplastic resin composition 61 is filled in the unevenness formed on the surface of each unit mold part 22a (see FIG. 3) of the roll plate 20, and has a shape along the unevenness. And the thermoplastic resin composition 61 is cooled through the 2nd roll 42 and the 3rd roll 43, and finally hardens | cures and a shape is fixed. As a result, it is possible to obtain a light guide plate belt-like sheet 10 ′ in which the light guide plate 10 is arranged seamlessly in the vertical and horizontal directions. Then, the strip-shaped sheet for light guide plate 10 ′ and the base sheet 50 are separated by the peeling roll 44. In this state, it is preferable that the belt-shaped sheet for light guide plate 10 ′ includes an alignment mark.

Each of the separated light guide plates 10 (see FIG. 1A) can be obtained by performing processes such as punching and cutting on the finally obtained light guide plate strip 10 ′. In that case, the alignment mark serves as a positioning reference.
The light guide plate 10 manufactured in this way has high positional accuracy of the unevenness, and can perform desired light control with high accuracy.

20 Roll plate 21 Cylinder 22 (22A, 22B) Stamper plate 26 Double-sided adhesive tape 34 Master plate 37 Electroformed plate S Gap

Claims (5)

A cylinder,
Unevenness corresponding to the surface pattern of the optical member is formed, and a sheet-shaped resin replicated plate wound around the outer peripheral surface of the cylinder;
A joining member that joins the outer peripheral surface of the cylinder and the back surface of the resin replication plate;
Roll version with. In the roll plate according to claim 1,
Adjacent ends of the resin replication plate wound around the outer peripheral surface of the cylinder are opposed to each other via a gap in the circumferential direction of the cylinder.
Roll version characterized by In the roll plate according to claim 1 or claim 2,
The resin replica plate is a plate produced by multi-faceting one unit mold part,
Roll version characterized by A resin replication plate production step of producing a sheet-shaped resin replication plate in which irregularities corresponding to the surface pattern of the optical member are formed using an electroforming plate having a shape corresponding to the surface pattern of the optical member;
A resin replication plate winding step of winding the back surface of the resin replication plate around the outer peripheral surface of the cylinder via a joining member;
A method for producing a roll plate comprising: In the manufacturing method of the roll plate of Claim 4,
Providing an electroforming plate making step of making the electroforming plate using a master plate on which a surface pattern of the optical member is formed;
A method for producing a roll plate characterized by the above.

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