KR101729587B1 - Control system for a flexible substrate and a roll-to-roll printing system using the same - Google Patents

Abstract

In a flexible substrate control system and a roll-to-roll printing system using the same, the flexible substrate control system includes a flexible substrate, a first roller unit, and a second roller unit. The first roller unit includes a first roller that fixes one end of the flexible substrate and a first drive shaft and a first rotation shaft that are fixed to both ends of the first roller and rotate to transmit driving force. The second roller unit includes a second roller spaced apart from the first roller by a predetermined distance and fixing the other end of the flexible substrate and a second drive shaft fixed to both ends of the second roller to transmit and rotate the driving force, And includes a second rotation shaft. At least one of the first and second rollers protrudes in a central direction and is bent in one direction.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flexible substrate control system and a roll-

The present invention relates to a flexible substrate control system and a roll-to-roll printing system using the same, and more particularly, to a flexible substrate control system for correcting a flexible substrate or a flexible cliche used in a roll- .

In a roll-to-roll printing process, a substrate portion is generally provided continuously, and a flexible substrate in the form of a film is used as the substrate portion. Accordingly, as the tension of the roll controlling the conveyance of the substrate is changed or a continuous process is performed on the substrate, the shape, position, etc. of the substrate can be improved, There is a problem of being deformed.

Particularly, in recent years, when a technique of stacking multi-layer patterns on the substrate portion is utilized for a display, a printing process for producing semiconductors, etc., when an additional pattern is stacked on a substrate portion having one pattern, There is an increasing need for substrate portion control technology for pattern alignment even if the shape or position is deformed.

Korean Patent Application No. 10-2001-0006840 discloses a technology for detecting and compensating for a feeding error of a printing press in relation to the control technology of the substrate portion, and Korean Patent Application No. 10-2013-004925 A technology related to a printing device that measures and corrects synchronization errors is disclosed, which controls the position of the rollers in the up and down direction.

However, the deformation of the substrate portion is generated in a wide variety of ways, and the prior art has a limitation in covering the various deformations of the substrate portion to correct the position or the shape.

Further, a process using a flexible cliche in addition to the flexible substrate portion in the roll-to-roll printing has been developed. Accordingly, in addition to the method of correcting the substrate itself by a method for compensating the deformation of the flexible substrate portion, There is an increasing need to develop a technique for indirectly compensating for deformation of the substrate portion by deforming the substrate portion.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a flexible substrate control system capable of improving the printing accuracy by correcting the shape and position of the flexible substrate.

Another object of the present invention is to provide a roll-to-roll printing system using the flexible substrate control system.

The flexible substrate control system according to an embodiment for realizing the object of the present invention includes a flexible substrate, a first roller unit, and a second roller unit. The first roller unit includes a first roller that fixes one end of the flexible substrate and a first drive shaft and a first rotation shaft that are fixed to both ends of the first roller and rotate to transmit driving force. The second roller unit includes a second roller spaced apart from the first roller by a predetermined distance and fixing the other end of the flexible substrate and a second drive shaft fixed to both ends of the second roller to transmit and rotate the driving force, And includes a second rotation shaft. At least one of the first and second rollers protrudes in a central direction and is bent in one direction.

In one embodiment, the curved roller may be bent symmetrically with respect to the center portion.

In one embodiment, as the first drive shaft or the second drive shaft rotates, the projecting direction of the center portion may be changed.

In one embodiment, when the projecting direction of the center portion of the curved roller is directed to the outward direction of the first and second rollers facing each other, the central portion of the flexible substrate is elongated, and the projecting direction of the central portion of the curved roller When the first and second rollers face each other, the central portion of the flexible substrate can be compressed.

In one embodiment, at least one of the first and second roller units may be rotated to be symmetrical with respect to a central portion of at least one of the first and second rollers about a direction perpendicular to the flexible substrate have.

In one embodiment, the flexible substrate may be a flexible cliché that turns off the ink of the blanket roll in a roll-to-roll printing process, or a flexible substrate portion to which the ink of the blanket roll is transferred to form a printed pattern .

A roll-to-roll printing system according to an embodiment for realizing another object of the present invention includes a blanket roll, a plate making unit and a substrate printing unit. The blanket roll is coated with ink by a coating unit. In the plate making unit, the ink coated on the blanket roll is turned off by the flexible closure. In the substrate printing unit, the ink remaining in the blanket roll is transferred to the flexible substrate portion to form a printing pattern. Wherein at least one of the plate making unit or the substrate printing unit includes first and second roller units. The first roller unit includes a first roller that fixes one end of the flexible closure or the flexible substrate unit and a first drive shaft and a first rotation shaft that are fixed to both ends of the first roller and rotate to transmit a driving force, do. The second roller unit includes a second roller spaced apart from the first roller by a predetermined distance and fixing the other end of the flexible closure or the flexible substrate unit and a second roller fixed to both ends of the second roller, A second drive shaft, and a second rotation shaft. At least one of the first and second rollers protrudes in a central direction and is bent in one direction.

In one embodiment, the flexible cliche is conveyed in a first direction in the plate making unit, and the flexible substrate portion can be conveyed in a second direction perpendicular to the first direction in the substrate printing unit.

In one embodiment, the curved roller is bent symmetrically with respect to the center portion, and the protruding direction of the center portion can be changed as the first drive shaft or the second drive shaft rotates.

In one embodiment, at least one of the first and second roller units may be disposed on the flexible claws or on the flexible substrate portion with respect to the central portion of at least one of the first and second rollers, So that it can be rotated symmetrically.

In one embodiment, there is further provided a measuring unit for measuring the position or shape of the flexible substrate portion, a supplying unit for supplying the flexible substrate unit to the substrate printing unit, and a collecting unit for collecting the flexible substrate unit on which the printing pattern is formed in the substrate printing unit .

According to the embodiments of the present invention, at least one roller of a pair of rollers for feeding a flexible substrate such as a flexible cliche or a flexible substrate portion has a shape bent so that the central portion protrudes in one direction, It can be deformed and transported.

That is, if the bent central protruding portion is positioned upward or downward, the shape of the flexible substrate may be maintained. However, if the central portion is located inward or outward, the central portion of the flexible substrate may be reduced The entire shape can be deformed. In particular, by controlling the amount by which the roller is rotated, the amount of deformation of the flexible substrate can be controlled.

Thus, on the basis of the deformation amount of the flexible substrate deformed through the roll-to-roll printing process, the amount of deformation of the flexible substrate can be corrected by controlling the amount of rotation of the roller.

Also, since at least one of the first and second roller units is rotatable about a direction perpendicular to the flexible substrate, that is, at least one from the state in which the extending directions of the first and second roller units are parallel to each other The flexible substrate can be more variously deformed in accordance with the change in the extending direction.

Particularly, since the roller has a shape bent so as to protrude from the central portion and can be rotated in the extending direction as described above, the flexible substrate transferred by the roller can be deformed into various forms, Can be improved.

In addition, the flexible substrate control system can be applied to both a plate-making unit or a substrate-printing unit in a roll-to-roll printing system, so that the flexible cliche and the flexible substrate can be simultaneously corrected, The flexible substrate portion can be deformed in four corners so that it can be corrected in various shapes.

1 is a perspective view illustrating a roll-to-roll printing system according to an embodiment of the present invention.
Fig. 2 is a plan view showing the plate making unit and the substrate printing unit of Fig. 1 at the same time.
Fig. 3 is a perspective view showing the plate making unit or the substrate printing unit of Fig. 2;
FIG. 4A is a plan view showing the first posture of the second roller unit of the plate making unit of FIG. 3, and FIG. 4B is a side view of FIG. 4A observed in the 'A' direction.
Fig. 5A is a plan view showing a second posture of the second roller unit of the plate making unit of Fig. 3, and Fig. 5B is a plan view showing a flexible clique deformed through the second posture of Fig.
Fig. 6A is a plan view showing the third posture of the second roller unit of the plate making unit of Fig. 3, and Fig. 6B is a plan view showing the flexible clique deformed through the third posture of Fig. 6A.
FIG. 7A is a plan view showing the fourth posture of the second roller unit of the plate making unit of FIG. 3, and FIG. 7B is a plan view showing the flexible clique deformed through the fourth posture of FIG. 7A.
Figs. 8A to 8D are plan views showing examples of the flexible substrate portion to be corrected through the plate making unit and the substrate printing unit of Fig.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another. The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the term "comprises" or "comprising ", etc. is intended to specify that there is a stated feature, figure, step, operation, component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating a roll-to-roll printing system according to an embodiment of the present invention.

1, the roll-to-roll printing system 1 according to the present embodiment includes a base frame 10, an ink supply unit 20, a coating unit 30, a blanket roll 40, a measuring unit 50, 60, a recovery unit 70, a plate making unit 100, and a substrate printing unit 200.

The roll-to-roll printing system 1 according to the present embodiment is substantially the same as the roll-to-roll printing system 1 according to the prior art except for the plate making unit 100 and the substrate printing unit 200, A roll-to-roll printing system having various structures in addition to the structure shown in Fig.

Accordingly, the plate making unit 100 and the substrate printing unit 200 will be described in detail below.

The ink supply unit 20, the coating unit 30, the plate making unit 100 and the substrate printing unit 200 are located on the base frame 10, (10) and performs a coating process, a plate making process and a printing process.

The ink supply unit 20 supplies ink to the coating unit 30 and the ink supplied to the coating unit 30 is coated on the blanket roll 40.

The blanket roll 40 is turned off by the cliche in the plate making unit 100 and the ink remaining in the blanket roll 40 is transferred onto the substrate printing unit 200, A print pattern is formed.

In this embodiment, the plate making unit 100 includes a flexible cleanser 101, whereby a flexible cleanser is supplied by a separate cleansing supply. The substrate printing unit 200 also includes a flexible substrate unit 201. The flexible substrate unit 201 is continuously supplied by the supply unit 60 and then is continuously supplied by the recovery unit 70 Respectively.

The roll-to-roll printing system 1 further includes a measuring unit 50. The measuring unit 50 is positioned above the flexible substrate unit 201 to detect a deformation or position of the flexible substrate unit 201, And the like.

Also, although not shown, the measuring unit 50 is also located on the upper portion of the flexible cliche 101, and it is possible to measure the deformation or position of the flexible cliche 101.

Further, the information about the deformation or position of the flexible substrate portion 201 or the flexible cliche 101 measured by the measuring portion 50 is provided to a control portion (not shown), and the control portion 201 or the deformation or position of the flexible cliche 101 can be corrected.

A specific system for controlling the deformation and position of the flexible cliche 101 and the flexible substrate 201 through the plate making unit 100 and the substrate printing unit 200 will now be described.

Fig. 2 is a plan view showing the plate making unit and the substrate printing unit of Fig. 1 at the same time.

2, the plate making unit 100 and the substrate printing unit 200 are continuously positioned on the base frame 10 so that the ink coated on the blanket roll 40 is transferred to the plate The ink remaining in the blanket roll 40 is transferred to the flexible substrate portion 201 of the substrate printing unit 200 after the flexible closure 101 of the unit 100 is turned off, A predetermined print pattern is formed on the recording medium 201.

The plate making unit 100 includes a first roller unit 110 and a second roller unit 120 which are positioned to face each other and convey the flexible cleanser 101 in a first direction X. [

The first roller unit 110 includes a first driving shaft 111 for providing a rotational driving force, a first rotating shaft 112 rotating in a pair with the first driving shaft 111, And a first roller 113 that rotates by the first rotation shaft 112 and feeds the flexible cliché 101.

Similarly, the second roller unit 120 also includes a second driving shaft 121 that provides a rotational driving force, a second rotating shaft 122 that rotates in a pair with the second driving shaft 121, And a second roller 123 that rotates by the second rotation shaft 122 and feeds the flexible cliché 101.

The substrate printing unit 200 includes a third roller unit 210 and a third roller unit 210 which are positioned to face each other and convey the flexible substrate unit 201 in a second direction Y perpendicular to the first direction X, And a roller unit 220.

The third roller unit 210 includes a third driving shaft 211 for providing a rotational driving force, a third rotational shaft 212 for rotating in a pair with the third driving shaft 211, And a third roller 213 that rotates by the third rotation shaft 212 and conveys the flexible substrate unit 201.

Similarly, the fourth roller unit 220 also includes a fourth drive shaft 221 that provides a rotational driving force, a fourth rotation shaft 222 that rotates as a pair with the fourth drive shaft 221, and a fourth drive shaft 221 And a fourth roller 223 rotated by the fourth rotary shaft 222 to transfer the flexible substrate 201.

Meanwhile, as described in detail above, the plate making unit 100 and the substrate printing unit 200 are arranged so that the placement direction of the flexible cliche or the flexible substrate portion along the conveying direction, and the conveying direction of the flexible cliche or the flexible substrate portion, Have substantially the same structure.

Accordingly, the control of the plate making unit 100 and the substrate printing unit 200 can be performed substantially in the same manner, and the deformation or position control method of the flexible cliche or flexible substrate portion is performed in the same manner.

The structure of the plate making unit 100 and the shape deformation or position control of the flexible cliche 101 will be described below. The structure of the substrate printing unit 200 and the structure of the flexible substrate portion 201 are assumed to be the same as each other, and redundant description is omitted.

Further, the flexible substrate 201 and the flexible cliche 101 will be collectively referred to as a flexible substrate when necessary for convenience of explanation.

Fig. 3 is a perspective view showing the plate making unit or the substrate printing unit of Fig. 2;

Referring to FIG. 3, in the plate making unit 100 according to the present embodiment, the second roller 123 of the second roller unit 120 protrudes in one direction as shown and has a curved shape.

That is, the second roller 123 extends in one direction and has a cylindrical shape that protrudes in one side radial direction from the extending axis, not a cylindrical shape symmetrical to each other in the radial direction about the extended axis, and has a curved shape. In this case, the second roller 123 protrudes most in the radial direction from the center of the second roller 123, and the degree of protrusion decreases toward both ends of the second roller 123, And is fixed to the second rotary shaft 122. The direction in which the center portion protrudes may be any one of the radial directions perpendicular to the extending directions of the second driving shaft 121 and the second rotating shaft 122.

As described above, the second roller 123 has the second drive shaft 121 and the second rotation shaft 122 in a state where both ends thereof are fixed to the second drive shaft 121 and the second rotation shaft 122, respectively. And has a curvature that is constant in the radial direction perpendicular to the imaginary extension direction (parallel to the second direction) to be connected, and has a shape in which the central portion is bent so as to protrude most.

Although not shown in FIG. 3, the first roller 113 as well as the second roller 123 may be warped in the same shape. That is, in the plate making unit 100 according to the present embodiment, at least one of the first and second rollers 113 and 123 may be formed in a bent shape.

As described above, in a state where at least one of the first and second rollers 113 and 123 is bent, the flexible cliche 101 is fixed in the state of being fixed by the first and second rollers 113 and 123 After the process is performed, it may be transferred by the first and second rollers 113 and 123.

Also, as described above, in the substrate printing unit 200, at least one of the third and fourth rollers 213 and 223 has a curved shape like the second roller 123 shown in Fig. 3 Lt; / RTI > After the printing process is performed with the flexible substrate 201 fixed by the third and fourth rollers 213 and 223, the third and fourth rollers 213 and 223, Lt; / RTI >

As described above, when at least one of the first to fourth rollers protrudes and has a curved shape, the flexible substrate (flexible cliche or flexible substrate) wound and fixed to the roller is moved in the direction in which the center portion protrudes It is stretched or compressed and deformed in shape. Therefore, when deforming the flexible substrate in the roll-to-roll printing process and re-deforming the flexible substrate for correction, it is possible to extend or compress the flexible substrate by controlling the projecting direction of the central portion of the roller, It becomes possible to re-deform.

Hereinafter, the deformation state of the flexible substrate according to the position of the roller in the protruding direction will be described as an example.

FIG. 4A is a plan view showing the first posture of the second roller unit of the plate making unit of FIG. 3, and FIG. 4B is a side view of FIG. 4A observed in the 'A' direction.

4A and 4B, when the protruded central portion of the second roller 123 is positioned in the first and second directions X and Y so as to face the third direction Z which is perpendicular to the first and second directions X and Y The first position and the rotational angle of the roller are 0 degrees), the flexible cliche 101 does not undergo elongation or compressive deformation in the first direction (X).

Therefore, in the state where there is no deformation of the flexible cliche 101, only the positional correction of the flexible cliche 101 is performed to perform the off-process.

Similarly, in the case of the flexible substrate unit 201 through the position of the roller as shown, the printing process can be performed by performing only the positional correction of the flexible substrate unit 201 in a state of no deformation.

Since the protruding central portion of the second roller 123 is positioned in the third direction Z perpendicular to the conveying direction of the flexible cliche 101 at the first position, May be extended in the third direction Z. [0035] Accordingly, it is necessary to correct the position of the flexible cliche 101 in the third direction Z, which can perform the correction by measuring the position of the flexible cliche 101 in the measuring unit described above.

This position correction is also the same for the flexible substrate portion 202.

Fig. 5A is a plan view showing a second posture of the second roller unit of the plate making unit of Fig. 3, and Fig. 5B is a plan view showing a flexible clique deformed through the second posture of Fig.

5A and 5B, when the projected center portion of the second roller 123 is positioned to face the positive first direction (+ X) (second position, rotation angle of the roller + 90 degrees) The flexible cliché 101 is deformed like the protruding shape of the second roller 123 in the positive first direction (+ X).

That is, as shown in FIG. 5B, the flexible cliché 101 is deformed in such a manner that the central portion thereof extends more than the corner portion along the positive first direction (+ X).

Therefore, when deformation of the flexible substrate portion occurs due to the roll-to-roll printing process, deformation of the flexible substrate portion is measured, and when the deformation of the shape shown in FIG. 5B is required, the second roller 123 is moved to the second posture So that the flexible cliche 101 can be deformed.

The correction of such a shape can be also applied to the flexible substrate portion 201. When deformation of the flexible substrate portion 201 occurs through the roll-to-roll printing process, the deformation amount of the flexible substrate portion 201 It is possible to directly deform the flexible substrate unit 201 when the shape shown in FIG. 5B is required to be deformed.

Fig. 6A is a plan view showing the third posture of the second roller unit of the plate making unit of Fig. 3, and Fig. 6B is a plan view showing the flexible clique deformed through the third posture of Fig. 6A.

6A and 6B, when the projected center portion of the second roller 123 is positioned to face the negative first direction -X (the third position, the rotation angle of the roller is -90 degrees) The flexible cliché 101 is deformed like the protruding shape of the second roller 123 in the negative first direction -X.

That is, as shown in FIG. 6B, the flexible cliché 101 is deformed in such a manner that a central portion thereof is compressed more than an edge portion along the negative first direction (-X).

Therefore, when deformation of the flexible substrate portion occurs due to the roll-to-roll printing process, the deformation of the flexible substrate portion is measured, and when the deformation of the shape shown in FIG. 6B is required, the second roller 123 is moved to the third posture So that the flexible cliche 101 can be deformed.

The correction of such a shape can be also applied to the flexible substrate portion 201. When deformation of the flexible substrate portion 201 occurs through the roll-to-roll printing process, the deformation amount of the flexible substrate portion 201 It is possible to directly deform the flexible substrate unit 201 when the shape shown in FIG. 6B needs to be deformed.

FIG. 7A is a plan view showing the fourth posture of the second roller unit of the plate making unit of FIG. 3, and FIG. 7B is a plan view showing the flexible clique deformed through the fourth posture of FIG. 7A.

7A and 7B, in the present embodiment, the second roller 123 changes only the rotation angle as in the first, second, and third orientations. In addition, as shown in FIG. 7A, The entire second roller unit 120 can rotate in the third direction Z with the rotation axis. Further, the rotation of the second roller 123 and the rotation of the entire second roller unit 120 may be simultaneously induced.

That is, the protruded central portion of the second roller 123 is positioned so as to face the positive first direction (+ X), and the second roller unit 120 is positioned in the third direction Z (The fourth posture), the flexible cliche 101 is protruded in the positive first direction (+ X) and compressed in the negative first direction (-X) .

7B, the upper portion of the edge fixed to the second roller 123 is stretched in the positive first direction (+ X), while the lower portion of the flexible cliche 101 is stretched Is compressed and deformed in the first direction (-X).

Therefore, when deformation of the flexible substrate portion occurs due to the roll-to-roll printing process, deformation of the flexible substrate portion is measured, and when the deformation of the shape shown in FIG. 7B is required, the second roller 123 is moved to the fourth posture So that the flexible cliche 101 can be deformed.

The correction of such a shape can be also applied to the flexible substrate portion 201. When deformation of the flexible substrate portion 201 occurs through the roll-to-roll printing process, the deformation amount of the flexible substrate portion 201 When the shape shown in FIG. 7B is required to be deformed, the flexible substrate 201 can be directly deformed.

Further, although not shown, the second roller unit 120 may be entirely conveyed along the first direction in addition to the entire rotation in the third direction Z about the rotation axis. Accordingly, the flexible cliche 101 may be deformed to be stretched or compressed along the first direction.

5A to 7B illustrate a flexible cliche 101 that is deformed on the assumption that the second roller unit 120 of the plate making unit 100 includes only a protruding second roller 123, The first roller unit 110 may include a first roller 113 having a protruding shape, or may be rotatable. In addition to the second roller unit 120, The flexible cliche 101 can be deformed into various shapes.

At least one of the third roller unit 210 and the fourth roller unit 220 in the substrate printing unit 200 as well as in the plate making unit 100 may include a protruding roller, So that various modifications to the flexible substrate portion 201 are possible.

In the present embodiment, the flexible cliche 101 is transferred in the first direction X in the plate making unit 100, and in the substrate printing unit 200, And is transported in two directions (Y).

That is, the direction in which the first and second roller units 110 and 120 extend and the direction in which the third and fourth roller units 210 and 220 extend are perpendicular to each other.

Accordingly, in the roll-to-roll printing process, when the flexible substrate unit 201 is deformed, the deformation of the flexible substrate unit 201 along the first direction (X) And the deformation of the flexible substrate portion 201 along the second direction Y is corrected by deforming the flexible substrate portion 201 in the substrate printing unit 200 It can be directly corrected while deforming as described above.

Thus, when the flexible substrate portion 201 as a whole is deformed, the deformation can be corrected not only in the first direction but also in the second direction, so that correction can be performed relatively easily with respect to various types of deformation.

Of course, when the deformation of the flexible cliche 101 occurs in addition to the deformation of the flexible substrate 201, the flexible cliche 101 is directly deformed in the first direction, The deformation of the flexible cliche 101 can be corrected by deforming the flexible substrate portion 201. [

Figs. 8A to 8D are plan views showing examples of the flexible substrate portion to be corrected through the plate making unit and the substrate printing unit of Fig.

Hereinafter, examples of deformation of the flexible substrate unit 201, which are performed as a result of the control of the plate making unit 100 and the substrate printing unit 200, will be described.

8A, the plate making unit 100 conveys the first roller unit 110 in a negative first direction (-X), and moves the second roller unit 120 in a positive first direction + X) to stretch the flexible cliche 101 in the first direction, and the substrate printing unit 200 conveys the third roller unit 210 in the negative second direction -Y, And the fourth roller unit 220 is moved in the positive second direction (+ Y) to stretch the flexible substrate unit 201 in the second direction.

8B, the plate making unit 100 conveys the first roller unit 110 in a positive first direction (+ X) and moves the second roller unit 120 in a negative first direction -X) to compress the flexible cliche 101 in the first direction, and the substrate printing unit 200 conveys the third roller unit 210 in the negative second direction -Y, And the fourth roller unit 220 is moved in the positive second direction (+ Y) to stretch the flexible substrate unit 201 in the second direction.

8C, in the plate making unit 100, the first roller unit 110 including the protruded first roller 113 is moved in the negative direction (-X) in the third direction Z in the clockwise direction with the rotation axis and the protruded central portion of the first roller 113 is rotated in the negative first direction (-X) The second roller unit 120 is rotated in the counterclockwise direction with the rotation axis in the third direction Z while the second roller unit 120 is being conveyed in the positive first direction + The flexible printed circuit board 200 rotates the third roller unit 210 in the negative second direction (-Y) in the first direction (+ X) And the fourth roller unit 220 is transferred in the positive second direction (+ Y) to stretch the flexible substrate portion 201 in the second direction Yes.

8D, in the plate making unit 100, the first roller unit 110 including the protruded first roller 113 is moved in the positive first direction (+ X) The second roller unit 120 including the protruded second roller 123 is rotated in the negative first direction (+ X) in the negative first direction (+ X) -X), the projecting central portion of the second roller 123 is rotated in a negative first direction (-X) so as to deform the flexible cliche 101, and at the same time, The third roller unit 210 is conveyed in the positive second direction Y and the fourth roller unit 220 is conveyed in the negative second direction Y, And compressing the portion 201 in the second direction.

As described above, in this embodiment, the arrangement position of the plate making unit 100 and the substrate printing unit 200, the conveyance or rotation of the roller units, the position of the protruded central portion of the rollers, The flexible substrate portion 201 or the flexible cliche 101 can be deformed and the flexibility of the flexible substrate portion 201 or the flexible cliche 101 generated in the roll- Or the deformation of the flexible cliche 101 can be corrected.

According to the embodiments of the present invention, at least one roller of a pair of rollers for feeding a flexible substrate such as a flexible cliche or a flexible substrate portion has a shape bent so that the central portion protrudes in one direction, It can be deformed and transported.

That is, if the bent central protruding portion is positioned upward or downward, the shape of the flexible substrate may be maintained. However, if the central portion is located inward or outward, the central portion of the flexible substrate may be reduced The entire shape can be deformed. In particular, by controlling the amount by which the roller is rotated, the amount of deformation of the flexible substrate can be controlled.

Thus, on the basis of the deformation amount of the flexible substrate deformed through the roll-to-roll printing process, the amount of deformation of the flexible substrate can be corrected by controlling the amount of rotation of the roller.

Also, since at least one of the first and second roller units is rotatable about a direction perpendicular to the flexible substrate, that is, at least one from the state in which the extending directions of the first and second roller units are parallel to each other The flexible substrate can be more variously deformed in accordance with the change in the extending direction.

Particularly, since the roller has a shape bent so as to protrude from the central portion and can be rotated in the extending direction as described above, the flexible substrate transferred by the roller can be deformed into various forms, Can be improved.

In addition, the flexible substrate control system can be applied to both a plate-making unit or a substrate-printing unit in a roll-to-roll printing system, so that the flexible cliche and the flexible substrate can be simultaneously corrected, The flexible substrate portion can be deformed in four corners so that it can be corrected in various shapes.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

The flexible substrate control system and roll-to-roll printing system using the same according to the present invention have industrial applicability that can be used in a roll-to-roll printing process.

1: Roll-to-roll printing system 10: Base frame
20: ink supply unit 30: coating unit
40: blanket roll 50: measuring section
60: supply unit 70:
100: Platemaking unit 101: Flexible chisel
110: first roller unit 120: second roller unit
200: substrate printing unit 201: flexible substrate portion
210: third roller unit 220: fourth roller unit

Claims (11)

A flexible substrate;
A first roller unit for fixing one end of the flexible substrate and a first roller unit fixed to both ends of the first roller, the first roller unit including a first drive shaft and a first rotation shaft rotating and transmitting a driving force; And
A second roller which is spaced apart from the first roller by a predetermined distance and fixes the other end of the flexible substrate and a second drive shaft and a second rotation shaft which are fixed to both ends of the second roller and rotate to transmit a driving force, A second roller unit,
Wherein at least one of the first and second rollers has a central portion protruding in one direction and bent,
Wherein the curved roller is bent symmetrically with respect to the center portion,
Wherein at least one of the first and second roller units is rotated to be symmetrical with respect to a center of at least one of the first and second rollers about a direction perpendicular to the flexible substrate, Is stretched and compressed at the same time. delete 2. The apparatus of claim 1,
Wherein the protruding direction of the center portion changes as the first drive shaft or the second drive shaft rotates. The method of claim 3,
The central portion of the flexible substrate is elongated when the protruding direction of the center portion of the warped roller is directed to the outward direction of the first and second rollers facing each other,
Wherein the central portion of the flexible substrate is compressed when the protruding direction of the center portion of the curved roller faces the directions of the first and second rollers facing each other. delete The method according to claim 1,
The flexible substrate may include:
Wherein the flexible substrate control unit is a flexible substrate unit in which a flexible cliche for turning off the ink of the blanket roll in a roll-to-roll printing process, or an ink of the blanket roll is transferred to form a printing pattern. A blanket roll on which the ink is coated by the coating unit;
A plate making unit in which the ink coated on the blanket roll is turned off by a flexible cliche; And
And a substrate printing unit in which ink remaining in the blanket roll is transferred to the flexible substrate portion to form a printing pattern,
Wherein at least one of the plate making unit or the substrate printing unit comprises:
A first roller unit for fixing one end of the flexible cliche or the flexible substrate unit and a first roller unit fixed to both ends of the first roller and including a first drive shaft and a first rotation shaft rotating and transmitting a driving force; And
A second roller that is spaced apart from the first roller by a predetermined distance and fixes the other end of the flexible closure or the flexible substrate portion and a second drive shaft which is fixed to both ends of the second roller, And a second roller unit including a rotation shaft,
Wherein at least one of the first and second rollers has a central portion protruding in one direction and bent,
Wherein the curved roller is bent symmetrically with respect to the center portion and the projecting direction of the center portion is changed as the first drive shaft or the second drive shaft rotates,
At least one of the first and second roller units is rotated so as to be symmetrical with respect to a center of at least one of the first and second rollers about a direction perpendicular to the flexible cliche or the flexible substrate portion, Characterized in that the flexible cleanser or one edge of the flexible substrate portion is stretched and compressed at the same time. 8. The method of claim 7,
Wherein the flexible cliche is conveyed in a first direction in the plate making unit and the flexible substrate portion is conveyed in a second direction perpendicular to the first direction in the substrate printing unit. delete delete 9. The method of claim 8,
A measuring unit for measuring a position or a shape of the flexible substrate unit;
A supply unit for supplying the flexible substrate unit to the substrate printing unit; And
Further comprising a recovery unit for recovering the flexible substrate portion on which the print pattern is formed in the substrate printing unit.

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