JP2000326350A - Pattern duplicator for flexible sheet substrate - Google Patents

Abstract

(57) [Problem] To provide a pattern duplicating apparatus for a flexible sheet substrate capable of accurately and stably duplicating a fine concavo-convex pattern at low cost. SOLUTION: The pattern duplicating apparatus 10 for a flexible sheet substrate according to the present invention includes a stamper 1 having a fine uneven pattern 1b formed on the upper surface thereof, and a dispenser 2 for applying a resin 30 on the upper surface of the stamper 1. Prepare. Sheet feeding units 5, 6
Supplies the flexible sheet base material S above the upper surface of the stamper 1 on which the resin 30 is applied so as to form an acute angle with the upper surface of the stamper 1. A nip roller 7 is provided on the upper surface side of the flexible sheet substrate S supplied by the sheet supply units 5 and 6 so as to be relatively movable with respect to the stamper 1 and the flexible sheet substrate S. The nip roller 7 continuously presses the flexible sheet substrate S against the upper surface of the stamper 1 from the closest edge of the flexible sheet substrate S to the upper surface of the stamper 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing an optical recording medium such as an optical card having fine uneven information tracks, and more particularly to an apparatus for manufacturing a fine sheet having a fine unevenness on a flexible sheet substrate. The present invention relates to an apparatus for copying a pattern onto a flexible sheet base material capable of stably copying a pattern at low cost.

[0002]

2. Description of the Related Art Generally, an optical recording medium such as an optical card achieves high-density recording by forming a fine uneven optical information recording pattern on a substrate for an optical recording medium. ing. Several methods for forming such a concavo-convex optical information recording pattern have been proposed. At present, the so-called “2P method” is mainly used among these molding methods, in which the precision of replicating a fine pattern is extremely high and the capital investment is small.

In the 2P method, a stamper having an uneven surface is prepared, a liquid ultraviolet curable resin is filled between the stamper and a base material for an optical information recording medium, and the resin is cured by irradiating ultraviolet rays. After that, the optical information recording medium is manufactured by removing the stamper.

In the conventional 2P method, an ultraviolet curable resin is dropped on a stamper, a base material for an optical recording medium is superimposed thereon, and the ultraviolet curable resin is applied to the optical recording medium base material and the stamper. Pressing is performed in a sandwiched state, and the ultraviolet curable resin is spread to obtain a predetermined area required for replicating a fine pattern.

[0005]

In the conventional 2P method, an ultraviolet curable resin is dropped near the center of a stamper, and the resin is pressed and spread through a base material.
Therefore, if there is variation in the shape of the dropped resin, the shape of the resin after setting the base material, the flatness of the pressing flat plate, the amount of the resin applied, and the like, the UV-curable resin after the replication is varied. There is a high possibility that the shape will not be uniform.

In particular, when the number of impositions of an optical information recording medium such as an optical card is small and the area is small, it is possible to spread the resin in a relatively uniform shape. When the area is increased and the area is increased, there is a high possibility that the shape of the ultraviolet-curable resin after replication becomes non-uniform.

In order to solve this problem, the inventor of the present invention initially required that the area of the stamper and the base material be sufficiently larger than the area of the uneven optical information recording pattern so as to increase the drop amount of the ultraviolet curable resin. I thought. However, in this case, the required amount of resin increases, and the cost increases.

[0008] On the other hand, in the press using a flat plate, there is also a problem that air bubbles cannot be completely avoided in the ultraviolet curable resin.

The present invention has been made in view of the above points, and is capable of forming a fine uneven pattern at low cost.
It is an object of the present invention to provide an apparatus for duplicating a pattern onto a flexible sheet base material that can be accurately and stably reproduced.

[0010]

SUMMARY OF THE INVENTION The present invention provides a stamper having a fine concavo-convex pattern formed on the upper surface thereof, a dispenser for applying resin to the upper surface of the stamper, and a stamper provided above the upper surface of the stamper provided with resin. A sheet supply unit for supplying a flexible sheet substrate so as to form an acute angle with the upper surface; and a stamper and a flexible sheet substrate on an upper surface side of the flexible sheet substrate supplied by the sheet supply unit. A nip roller that is provided so as to be relatively movable, and continuously presses the flexible sheet substrate against the upper surface of the stamper from the closest edge side of the flexible sheet substrate to the upper surface of the stamper. This is a device for copying a pattern to a flexible sheet substrate.

According to the present invention, the nip roller continuously presses the flexible sheet substrate against the upper surface of the stamper, so that the resin is effectively spread and the bubbles are prevented from being mixed into the resin.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic plan view showing an apparatus for copying a pattern onto a flexible sheet substrate according to a first embodiment of the present invention. FIG. 2 is a schematic side view of the pattern duplicating apparatus of FIG.

As shown in FIGS. 1 and 2, the first embodiment of the present invention
The apparatus 40 for replicating a pattern onto a flexible sheet substrate according to the embodiment includes a stamper 1 having a fine uneven pattern 1p (see FIG. 3) formed on the upper surface, and a resin 30
And a dispenser 2 for applying a liquid. The dispenser 2 is positioned by the arm 3.

In the vicinity of the dispenser 2, a sheet moving section 5 as a sheet supply section and an inclined guide 6 are provided. The sheet moving unit 5 and the inclined guide 6 supply the flexible sheet base material S above the upper surface of the stamper 1 on which the resin 30 is applied so as to form an acute angle with respect to the upper surface of the stamper 1. . On the upper surface side of the flexible sheet substrate S supplied from the inclined guide 6, a nip roller 7 that is movable relative to the stamper 1 and the flexible sheet substrate S is provided. The nip roller 7 continuously presses the flexible sheet substrate S against the upper surface of the stamper 1 from the closest edge side of the flexible sheet substrate S to the upper surface of the stamper 1 (details will be described later).

Dispenser 2, arm 3, tilt guide 6
The nip roller 7 is housed in the shielding chamber 36. The HEPA filter 10 for purifying the air in the shielding room 36 is attached to the shielding room 36. An operation panel is mounted outside the shielding room 36.

In the present embodiment, the resin is an ultraviolet curable resin. An ultraviolet irradiation device 8 is provided outside the shielding chamber 36 and near the nip roller 7.

A base material setting section 4 is provided outside the shielding chamber 36 and near the inclined guide 6.
The sheet moving unit 5 transfers the flexible sheet base material S set in the base material setting unit 4 to the inclined guide 6.

A peeling section 35 is provided outside the shielding chamber 36 and near the dispenser 2.

The stamper 1 according to the present embodiment is mounted on a stamper table 31. Stamper table 31
Are placed on the conveyor 12, and the area where the dispenser 2 is provided, the area where the inclined guide 6 and the nip roller 7 are provided, and the ultraviolet irradiation device 8 are provided with the movement of the conveyor 12. The region and the region where the peeling portion 35 is provided are sequentially moved. That is, it reciprocates in the left-right direction of FIG.

FIG. 3 is a view for explaining a state in which the dispenser 2 applies the resin. As shown in FIG. 3, the stamper 1 moves the dispenser 2 with the movement of the conveyor 12.
After moving to the resin application area by the dispenser 2,
The resin 30 is applied to the upper surface of the stamper 1 near the position where the nip roller 7 presses the flexible sheet substrate S, that is, in the vicinity of the front edge of the stamper 1 in the traveling direction.

More specifically, the dispenser 2 extends from the basic position 2a in a direction perpendicular to the traveling direction of the stamper 1 (the relative movement direction of the nip roller 7 with respect to the stamper 1 and the flexible sheet substrate S). The resin 30 is applied while intermittently stopping during the movement. The positioning of the dispenser 2 is controlled by the arm 3
Made through.

In the case shown in FIG. 3, the dispenser 2
3 from the position 2a (the traveling direction of the stamper 1 and the vertical direction).
X to straight direction)₁ Only move and stop, then apply resin 30
To start. After a predetermined time has elapsed, the resin 30
X in the same direction while continuing to apply_Two Just move and stop
Stop. Similarly, a predetermined set time (same as the previous set time
It is not necessary to continue the application of resin 30 after elapse
X in the same direction_Three Just move and stop. same
Set time (must be the same as each set time above)
Is not applied), the application of the resin 30 is continued.
And further in the same direction x_Four Just move and stop. Similarly prescribed
Set time (not necessarily the same as the previous set times)
Elapses, the same is continued while the application of the resin 30 is continued.
X in direction _Five Just move and stop. And the prescribed settings
Elapsed time (not necessarily the same as each set time above)
Then, the application of the resin 30 is stopped and returned to the basic position a2.
You.

According to such a coating method, a relatively large amount of the resin 30 can be applied to each stop point. The number of stop points, the position of each stop point, the stop time, and the like can be appropriately determined according to the area of the stamper 1, the number of impositions of the uneven pattern 1b, the characteristics of the resin 30, and the like.
Further, the amount of the resin 30 applied to the dispenser 2 can be appropriately controlled.

In the case of the present embodiment, the dispenser 2
However, the positioning other than the vertical direction in FIG. 3 can be controlled. Specifically, the relative positional relationship y between the positioning pin 1c provided on the stamper 1 and the basic position 2a is detected by a position sensor or the like (not shown), and the stamper 1 is further moved.
The stop point of the dispenser 2 can be finely adjusted.

Further, the dispenser 2 has a coating outlet 2t for the resin 30 (see FIG. 2), and the height of the coating outlet 2t with respect to the upper surface of the stamper 1 can be appropriately controlled.
For example, at the basic position 2a, the height of the coating outlet 2t is set relatively high to ensure collision avoidance with the stamper 1, while the height from the stamper 1 is lowered at the time of applying the resin 30 so that air bubbles are generated. Can be prevented from being mixed.

Next, a supply section of the flexible sheet base material S will be described with reference to FIGS. FIG. 4 is a schematic plan view near the base material setting section 4. As shown in FIG. 4, the base material setting section 4 has a guide 4c for supporting the periphery of the flexible sheet base material S. The flexible sheet base material S of the present embodiment has a substantially square shape, and has positioning holes formed at three corners, and positioning pins 4a for performing positioning through the positioning holes are provided on the guides 4c. Is formed. The positioning pins 4a can be moved up and down by air cylinders 4b provided on the guides 4c.

As shown in FIG. 5, the sheet moving section 5 has a rotating arm 5a and nine (3 × 3) suction pads 5b. When the flexible sheet base material S is set in the base material setting section 4, each suction pad 5 b is placed on the upper surface side of the flexible sheet base material S set in the base material setting section 4. It is positioned perpendicular to the substrate S. Thereafter, the suction pad 5b approaches the flexible sheet base material S and sucks the flexible sheet base material S.

The positioning pins 4a of the substrate setting section 4 are lowered by the operation of the air cylinder 4b after the flexible sheet substrate S is sucked by the suction pad 5b. Thereby, the flexible sheet substrate S is released from the restraint, and can be moved above the inclined guide 6 with the movement of the sheet moving section 5. Further, the flexible sheet base material S can assume an inclined state as shown in FIG. 5 by the rotation arm 5a.

As shown in FIGS. 4 and 5, the inclined guide 6 is passed over a pair of side guides 6s, a pair of sprockets 6b provided on each side guide 6s, and a pair of sprockets 6b. A chain 6y, a moving guide 6a having an L-shaped cross section attached to the chain 6y, and a moving guide 6
a and a sliding portion 6c connected to the sliding portion 6a.

As shown in FIG. 5, the shaft of the sprocket 6b and the side guide 6s are moved by the angle adjusting arm 17
It is supported so that the angle can be adjusted. Angle adjustment arm 17
Are movable in the horizontal direction along the rails 22. The angle adjusting arm 17 has an air cylinder 18, and a connecting pin 18 a provided on a telescopic portion of the air cylinder 18 can be connected to a connecting portion 18 b of the feed unit 20.

The sliding section 6c moves the moving guide 6a with the movement of the sliding arm 15.
The sliding arm 15 is horizontally movable along a rail 21 provided on a side wall of the angle adjusting arm 17. Further, the sliding arm 15 has an air cylinder 19, and a connecting pin 19 a provided on a telescopic portion of the air cylinder 19 and a connecting portion 19 b of the feed unit 20 can be connected.

The feed unit 20 is connected to a uniaxial robot 25 via a connecting plate 26. The feed unit 20 is provided with a positioning pin 24 described later.

On the other hand, the stamper 1 coated with the resin 30
5 shows a movement of the conveyor 12, a stopper 23 provided below the inclined guide 6, and a plurality of positioning pins 24 (FIG. 5).
Then, for convenience of illustration, only one is illustrated)
Thus, it can be positioned at a position below the inclined guide 6. The positioning pins 24 support the stamper table 31 stopped by the stopper 31 by floating the stamper table 31 from the conveyor 12, and provide the stamper 1 with high flatness and strength.

From the state shown in FIG.
By operating 19, the connecting pins 18a, 19a are connected to the connecting portions 18b, 19b of the feed unit 20, respectively.

Further, the sheet moving section 5 is positioned so that two of the positioning holes of the flexible sheet substrate S pass through the two positioning pins 1c of the stamper 1. When the positioning is completed, the flexible sheet substrate S
Contacts the side guide 6s of the inclined guide 6. After the positioning, the suction by the suction pad 5b is released, and the sheet moving unit 5 returns above the base material setting unit 4.

The positioning pin 24 integrated with the feed unit 20, the stamper 1, the angle adjustment guide 17,
Sliding guide 15, inclined guide 6, and flexible sheet substrate S
The positioning pin 1c reaches just below the center line of the nip roller 7 as the feed unit 20 moves toward the nip roller 7 by the uniaxial robot 25.
The stopper 23 is retracted at the start of the movement.

Thereafter, the nip roller 7 descends to press the flexible sheet substrate S against the stamper 1. This state is shown in FIG. Nip roller 7
Is formed with, for example, a groove so as not to interfere with the positioning pin 1c.

Next, when the air cylinder 18 is operated in reverse, the connection between the connecting pin 18a and the connecting portion 18b is released, and the movement of the angle adjusting arm 17 is stopped.

With the movement of the sliding arm 15 by the further feed unit 20, the movement guide 6a moves via the sliding portion 6c substantially in synchronization with the movement of the stamper 1, and the nip roller 7 rotates. Thus, the flexible sheet substrate S is pressed on the upper surface of the stamper 1 while the resin 30 is being spread. This state is shown in FIG.

Further, when the air cylinder 19 is operated in reverse, the connection between the connecting pin 19a and the connecting portion 19b is released, and the feed unit 20 is further moved, and the stamper 1 and the flexible sheet base material S are connected. Are completely adhered to each other. This state is shown in FIG.

Thereafter, the nip roller 7 is raised to the original position, the sliding arm 15 and the angle adjusting arm 17 are returned to the positions shown in FIG. 5 by the air cylinders 14 and 16, and the positioning pins 24 are retracted. Thus, the single-axis robot 25 also returns to the original position.

Next, the operation of the present embodiment having such a configuration will be described with reference to FIG.

First, the main power supply of the pattern duplication device 1
The UV power supply and the air supply source (neither is shown) are turned on (SETP01).

Next, the flexible sheet base material S is set in the base material setting section 4 (STEP 02). Then, a sheet substrate moving switch (not shown) is turned on (STE
P03) and the truly flexible sheet substrate S
Check whether is set (STEP0)
3). If the flexible sheet substrate S is not set,
It returns to STEP02 again (STEP04). Then, the sheet moving unit 5 operates (STEP 05).

On the other hand, the stamper 1 and the stamper table 31 which have been waiting at the initial positions shown in FIGS. 1 and 2 start moving with the movement of the conveyor 12 (STEP 0).
6). The stamper table 31 is positioned and stopped in the resin application area (STEP 07).

In a time series manner, in this embodiment, after the positioning of the stamper table 31 is stopped, the sheet moving unit 5
The flexible sheet reaches the flexible sheet substrate S set in the substrate setting section 4 (STEP 08).

Then, the dispenser 2 and the arm 3 are operated to apply the resin 30 onto the stamper 1 (STEP 1).
09).

[0049] As shown in FIG. 3, the dispenser 2 is moved by x ₁ stops from the basic position 2a to the downward direction in FIG. 3 (a traveling direction perpendicular to the direction of the stamper 1), the coating and out of the resin 30 Start. After a predetermined time elapses, the resin 30
Further stops moving in the same direction by x ₂ while continuing the coating and out. Similarly, when a predetermined time elapses, the resin 3
Further stop moved by x ₃ in the same direction the coating and out of 0 while continuing. When a predetermined set time has elapsed in the same manner, further stops moved by x ₄ in the same direction while continuing the coating and out of the resin 30. When a predetermined set time has elapsed in the same manner, further stops moved by x ₅ in the same direction while continuing the coating and out of the resin 30. Then, when a predetermined time has elapsed, the application of the resin 30 is stopped, and the process returns to the basic position a2.

According to such an application method, a relatively large amount of resin 30 can be applied to each stop point. The number of stop points, the position of each stop point, the stop time, and the like can be appropriately determined according to the area of the stamper 1, the number of impositions of the uneven pattern 1b, the characteristics of the resin 30, and the like.
Further, the amount of the resin 30 applied to the dispenser 2 can be appropriately controlled.

In a time series manner, in this embodiment, the flexible sheet base material S is applied while the resin 30 is being applied by the dispenser 2.
Starts moving from the base material setting section 4 toward the inclined guide 6 by the sheet moving section 5 (STEP 10). When the application of the resin 30 by the dispenser 2 is completed (STEP 11), the flexible sheet base material S reaches the inclined guide 6 (STEP 12).

Thereafter, the stamper 1 and the stamper table 31 start moving from the resin application area (STEP 1).
3), it is positioned below the inclined guide 6 and stops (STEP 14). This state is shown in FIG. Then, the tilt guide 6 and the stamper 1
Above, the flexible sheet base material S is positioned and supplied using the positioning pins 1c (STEP 15).

The inclined guide 6, the flexible sheet base material S, the stamper 1, and the stamper table 31
It is integrated with the feed unit 20 by the operations of 8, 19, and moves to a position below the nip roller 7 with the movement of the feed unit 20 (STEP 17). Then, the nip roller 7 descends (STEP 18). This state is shown in FIG.

Then, the movement of the angle adjusting arm 17 is completed by the reverse operation of the air cylinder 18 and only the stamper 1 and the stamper table 31 continue to move (STEP 1).
9). At this time, the flexible sheet base material S is
c, is guided by the moving guide 6a, is continuously supplied to the upper surface of the stamper 1, and is pressed by the nip roller 7 while rotating. This state is shown in FIG.

As described above, the nip roller 7 continuously presses the flexible sheet base material S against the upper surface of the stamper 1, so that the resin 30 is effectively pushed and spread, and air bubbles are prevented from being mixed into the resin 30. Is done.

Thereafter, the nip roller 7 rises (STE).
P21), the inclined guide 6 returns to the initial position (STE
P22), and returns to the state shown in FIG.

Thereafter, the stamper 1 and the stamper table 31 start moving from the sheet supply area (STEP 2).
3), it is positioned below the ultraviolet irradiation device 8 and stops (STEP 24). Then, the ultraviolet irradiation device 8 is turned on for a predetermined set time, and the resin 30 is cured (STEPs 25 to 27).

Thereafter, the stamper 1 and the stamper table 31 start moving from the ultraviolet irradiation area (STEP 2).
8), is positioned at the initial position and stops (STEP 2)
9). In the present embodiment, the initial position is a peeling area, and the peeling section 35 peels off the flexible sheet base material S from which the resin 30 is cured and integrated with the stamper 1.

As described above, according to the present embodiment, the nip roller 7 continuously presses the flexible sheet base material S against the upper surface of the stamper 1, so that the resin 30 is effectively spread and spread. Air bubbles are prevented from entering the resin 30.

The concave / convex pattern formed of the resin has a reverse concave / convex relationship with the concave / convex pattern 1b of the stamper 1. The concave-convex pattern formed of the resin according to the present embodiment is stably copied at a low cost with high accuracy and is used as a concave-convex information track of an optical recording medium.

[0061]

As described above, according to the present invention,
When the nip roller continuously presses the flexible sheet base material against the upper surface of the stamper, the resin is effectively pushed out and the bubbles are prevented from being mixed into the resin. Therefore, it is possible to copy the fine uneven pattern accurately and stably at low cost.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a first embodiment of an apparatus for copying a pattern onto a flexible sheet substrate according to the present invention.

FIG. 2 is a schematic side view of the apparatus for copying a pattern onto the flexible sheet substrate of FIG.

FIG. 3 is a view for explaining a resin application state by a dispenser.

FIG. 4 is a diagram illustrating a supply section of a flexible sheet base material.

FIG. 5 is a diagram illustrating a supply section of a flexible sheet base material.

FIG. 6 is a diagram illustrating a supply section of a flexible sheet base material.

FIG. 7 is a diagram illustrating a supply section of a flexible sheet base material.

FIG. 8 is a diagram illustrating a supply section of a flexible sheet base material.

FIG. 9 is a flowchart showing the operation of the pattern duplicating apparatus for the flexible sheet substrate of FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 stamper 1b uneven pattern 1c positioning pin 2 dispenser 2t coating outlet 4 base material setting section 5 sheet moving section 5a rotating arm 5b suction pad 6 tilt guide 6a moving guide 6b sprocket 6c sliding section 6s side guide 6y chain 7 nip roller 8 ultraviolet ray Irradiation device 10 HEPA filter 12 Conveyor 14 Air cylinder 15 Sliding arm 16 Air cylinder 17 Angle adjusting arm 18 Air cylinder 18a Connection pin 18b Connection 19 Air cylinder 19a Connection pin 19b Connection 20 Feed unit 21, 22 Rail 23 Stopper 24 Positioning Pin 25 Uniaxial robot 26 Connecting plate 30 Resin 31 Stamper table 35 Peeling part 36 Shielding room 40 Pattern duplicator for flexible sheet base material

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) // B29L 17:00 F term (reference) 2C005 HA17 JA12 KA31 KA48 LC01 4F205 AA44 AH79 AR07 GA07 GB01 GC01 GD01 GE25 GF29 GW34 4F209 AA44 AH79 AR07 PA02 PB01 PC05 PN09 PQ01 5D121 AA02 DD03

Claims (12)

[Claims] 1. A stamper having a fine concavo-convex pattern formed on an upper surface thereof, a dispenser for applying a resin on the upper surface of the stamper, and an acute angle with the upper surface of the stamper above the resin-applied stamper upper surface. A sheet supply unit for supplying a flexible sheet substrate, a stamper and a flexible sheet substrate provided on the upper surface side of the flexible sheet substrate supplied by the sheet supply unit; A nip roller for continuously pressing the flexible sheet substrate against the upper surface of the stamper from the edge closest to the upper surface of the stamper of the flexible sheet substrate. Duplication device. 2. The flexible device according to claim 1, wherein the dispenser is configured to apply resin to a portion of the upper surface of the stamper near the starting position of pressing the flexible sheet substrate by the nip roller. A pattern duplicator for sheet substrates. 3. The dispenser according to claim 1, wherein the resin is applied while moving along a direction perpendicular to a direction in which the nip roller moves relative to the stamper and the flexible sheet substrate. Item 3. An apparatus for copying a pattern onto a flexible sheet substrate according to Item 2. 4. The apparatus according to claim 3, wherein the dispenser stops intermittently during the movement. 5. The flexible sheet substrate according to claim 1, wherein the dispenser is capable of appropriately controlling the application position and the application amount of the resin. Pattern duplication device. 6. The dispenser according to claim 1, wherein the dispenser has a resin coating outlet, and the height of the coating outlet relative to the upper surface of the stamper can be appropriately controlled. An apparatus for copying a pattern to a flexible sheet substrate according to the above. 7. The flexible sheet base according to claim 1, wherein the sheet supply section supplies the flexible sheet base so as not to be slackened. To a pattern duplication device. 8. The apparatus according to claim 1, wherein the resin is an ultraviolet curable resin. 9. The apparatus according to claim 8, further comprising an ultraviolet irradiation device. 10. The pattern duplicating on a flexible sheet substrate according to claim 9, further comprising a peeling section for peeling the flexible sheet from the stamper after the ultraviolet curable resin is cured. apparatus. 11. A stamper sequentially moves in a region provided with a dispenser, a region provided with a sheet supply unit and a nip roller, a region provided with an ultraviolet irradiation device, and a region provided with a peeling unit. The apparatus for copying a pattern onto a flexible sheet substrate according to claim 10, wherein the apparatus is mounted on a stamper table to be used. 12. The uneven pattern made of a resin formed in a reverse uneven relationship with the uneven pattern of the stamper is an uneven information track of an optical recording medium. For pattern duplication on flexible sheet substrates.