KR20110037630A - Printer - Google Patents

Abstract

PURPOSE: A printing apparatus is provided to improve the productivity by printing more than two substrates aligned on a loading position of a work stage. CONSTITUTION: A plurality of substrates is loaded on the upper side of the loading work stage(50). A gravure roll(10) implements the role of changing one resist to the exterior of the blanket roll(40). The resist pattern having the arrangement like checker board is formed in the surface of the blanket roll and the gravure roll. A dispenser(30) spreads the resist on the exterior of the gravure roll. A doctor blade(20) eliminates the unnecessary resist from the resist spread on the exterior of the gravure roll.

Description

Print Device {Printer}

The present invention relates to a printing apparatus, and more particularly, a simpler and simpler structure than the conventional one, which enables to more effectively print a resist pattern on a surface of a substrate such as an EMI filter for a PDP, as well as simplifying two or more substrates. Can be printed after alignment to the loading position on the work stage in an efficient and efficient way, especially when the large substrate is aligned to the loading position on the work stage. The present invention relates to a printing apparatus capable of simplifying the apparatus as well as reducing the foot print of the apparatus as compared to a structure for moving the apparatus.

Recently, as the electronic display industry has developed rapidly among the semiconductor industry, flat panel displays (FPDs) have started to appear.

Flat panel displays are commonly used as monitors for TVs or computers, or as display devices for devices such as mobile phones, PDAs, and digital cameras. Types of flat panel displays include liquid crystal displays (LCDs), plasma display panels (PDPs), and organic light emitting diodes (OLEDs).

Meanwhile, electromagnetic interference (EMI) filters are mounted on TVs for LCD, PDP, and OLED, particularly PDP TVs. EMI filter for PDP, which can be classified into conductive film type or mesh type, is used for electromagnetic shielding.

Such PDP EMI filter is a substrate having a thickness thinner or thicker than that of an LCD glass substrate, and a resist pattern having an array like a checker board is formed on the surface thereof.

A series of manufacturing methods for forming a resist pattern on the surface of an EMI filter (hereinafter referred to as a substrate) for a PDP includes first coating an anchor layer on an optical PET film, and then applying a Pd layer thereon. After coating, the copper foil film is laminated. Then, after laminating the DFR film again, the exposure, development, and etching processes are performed, followed by stripping the DFR layer and following the clearing process.

However, as described above, a series of processes for forming a resist pattern on a surface of a substrate are complicated and manufacturing costs are high.

In order to overcome this problem, a method of using the printing method in the PDP field has recently been proposed.

In the printing method, a gravure filled with a resist and a roll corresponding thereto are formed to form a resist pattern of the dye on the substrate by the action of the roll.

If such a printing method can be put into practical use, a series of printing processes for forming a resist pattern on a substrate such as an EMI filter for PDP may be performed more quickly and effectively. Since the device capable of forming the device has not been put to practical use, research and development thereof is required.

In this case, productivity can be improved if the two or more substrates can be printed on the work stage where the printing operation is carried out on the substrate as required and then printed in a simple and efficient manner and then printed. There is no consideration for this.

An object of the present invention is a simpler and simpler structure than the conventional one, which enables to more effectively print a resist pattern on a surface of a substrate such as an EMI filter for a PDP, as well as loading positions on a work stage in a simple and efficient manner for two or more substrates. Can be printed after aligning to the substrate to improve productivity, especially when the large substrate is aligned to the loading position on the work stage, the device is simplified compared to the structure that moves the work stage itself for the alignment of large substrates In addition to providing a printing device that can reduce the device's foot print.

According to the present invention, a plurality of substrates are loaded onto the upper surface of the work stage (work stage) in which a printing operation for the plurality of substrates are in progress; Gravure disposed spaced apart from the work stage, the resist is applied to the outer surface (Gravure); A blanket roll provided to be accessible to and spaced apart from the gravure and transferring the resist from the gravure to retransition to a substrate on the work stage; And an alignment portion provided on the work stage to align the plurality of substrates to a loading position on the work stage.

The work stage may be a dual work stage having first and second substrate loading parts on which two first and second substrates are loaded.

The alignment unit may include: a first alignment stopper disposed in a region between the first and second substrate loading units and aligned while one side walls of the first and second substrates are in close contact with each other; And a second alignment stopper disposed on an upper surface of the work stage at a position spaced apart from the first alignment stopper and aligned while the other side walls of the first and second substrates are in close contact with each other.

The plurality of first alignment stoppers may be provided to be spaced apart from each other, the movable alignment is movable on the upper surface of the work stage, the second alignment stopper may be fixed to the upper surface of one side of the work stage.

The alignment unit may include: a power providing unit configured to provide power to move the plurality of first alignment stoppers horizontally in a horizontal direction in a length direction of the blanket roll; A moving connection unit for movably connecting the plurality of first alignment stoppers to the power providing unit; And an up / down driving unit configured to up / down drive the plurality of first alignment stoppers while one side is connected to the movable connection unit.

The power supply unit, a servo motor; And a ball screw coupled to the rotating shaft of the servo motor, wherein the moving connector comprises: a horizontal bar connected to the ball screw; And vertical bars connected to the up / down driving parts at both ends of the horizontal bar.

The horizontal bar and the vertical bar may be further coupled to a linear guide for guiding the movement of the horizontal bar and the vertical bar.

The up / down driving unit may be a cylinder coupled to the first alignment stopper one by one.

The first align stopper may include a stopper body coupled to the rod of the cylinder; An elastic stopper roller which is coupled to the outside of the stopper body so that one side walls of the first and second substrates are in close contact with each other; And a bearing disposed between the stopper body and the stopper roller to freely rotate the stopper roller with respect to the stopper body.

The stopper body and the stopper roller may be keyed.

The aligning unit may include: a plurality of first pushers disposed opposite the first align stopper with the substrate interposed therebetween to push the first and second substrates toward the first align stopper; And a plurality of second pushers disposed opposite the second align stopper with the substrate interposed therebetween to push the first and second substrates toward the second align stopper.

The work stage may be formed with a plurality of first and second pusher movement slots in which the first and second pushers are moved, and the first and second pushers are moved up within the slots for moving the first and second pushers. It may be provided to move up / down.

Protruding heights of the first and second alignment stoppers may be disposed at a position lower than a height of the substrate loaded at a loading position on the work stage.

A plurality of vacuum holes may be further formed on the surface of the work stage.

The gravure is a roll-shaped gravure roll is fixed to the upper region of the position spaced apart from the work stage, the blanket roll may be disposed between the work stage and the gravure roll.

A lift drive unit coupled to the blanket roll to move the blanket roll up and down with respect to the gravure roll; And a moving rotation part coupled to both sides of the blanket roll to move and rotate the blanket roll with respect to the substrate loaded on the work stage in order for the printing operation to proceed.

A dispenser for applying the resist to an outer surface of the gravure roll; And a doctor blade disposed around the dispenser to remove unnecessary resist from the resist applied to the outer surface of the gravure roll.

The substrate may be an electromagnetic interference (EMI) filter for a plasma display panel (PDP).

According to the present invention, the resist pattern can be more effectively printed on the surface of a substrate such as an EMI filter for a PDP, and the two or more substrates can be loaded at a loading position on a work stage in a simple and efficient manner. It can be printed after aligning to improve productivity, especially when the large substrate is aligned to the loading position on the work stage, the device can be simplified compared to the structure that moves the work stage itself to align the large substrate. Not only can it reduce the foot print of the device.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

For reference, the substrate to be described below includes an LCD (Plama Display Panel) EMI (Electromagnetic Interference) filter or an LCD (Liquid) in which pixels having R (Red), G (Green), and B (Blue) patterns are printed. It may be a color filter substrate on which a color filter layer of a crystal display is formed, or may be a flat panel display (FPD) substrate including a plasma display panel (PDP) and organic light emitting diodes (OLED).

1 is a schematic structural diagram of a printing apparatus according to an embodiment of the present invention, FIG. 2 is an enlarged view of a work stage region, FIG. 3 is an enlarged view of region A of FIG. 2, and FIGS. 4 and 5 are respectively An enlarged front view and a plan view of the blanket roll region, and FIGS. 6 to 9 are diagrams showing steps in which the first and second substrates are aligned, respectively.

As shown in these figures, the printing apparatus of this embodiment includes a gravure roll 10, a dispenser 30 for applying a resist to the outer surface of the gravure roll 10, and a gravure roll 10. As shown in FIG. Doctor blades 20 (Dr. Blade) for removing unnecessary resist among the resists applied on the outer surface of the resist, and transfer the resist from the gravure roll 10 to the first and second substrates (G1, G2) and retransfer (printed) Blanket roll 40, a work stage (50), a work stage 50, a work stage (print stage) that the print job proceeds to the first and second substrates (G1, G2) by the blanket roll 40, And an alignment portion 80 provided at the loading position on the work stage 50 to align the first and second substrates G1 and G2, and a lower base 60 supporting them.

The gravure roll 10 serves to transfer a resist to the outer surface of the blanket roll 40. Thus, the gravure roll 10 and the blanket roll 40 have substantially similar volumes, and a resist pattern having a checkerboard-like arrangement is formed on the surface thereof.

The gravure roll 10 is fixed to a pair of left and right support parts 12 fixed to the lower base 60 but is rotated at the fixed position, thereby transferring the resist to the outer surface of the blanket roll 40.

As such, since the gravure roll 10 is fixed at the position and only rotates at the position, the blanket roll 40 is driven against the gravure roll 10 in order for the blanket roll 40 to transfer the resist from the gravure roll 10. It must descend. This will be described later.

The dispenser 30 serves to apply a resist to the outer surface of the gravure roll 10. The resist may be black ink or pigment or color resist.

Although not shown in detail, the outer surface of the gravure roll 10 is formed with an uneven pattern substantially covered with a resist (coated). The uneven pattern at this time may be embossed or intaglio. In the case of the embossed form, a resist is applied to the outer surface of the protruding convex-and-concave portion 10b to be transferred to the blanket roll 40. Transitions to.

However, when the blanket roll 40 receives the resist from the outer surface of the gravure roll 10 and retransmits (prints) it to the first and second substrates G1 and G2, the first and second substrates G1, In order to maintain the thickness of the resist pattern uniformly from the surface of G2), it may be advantageous that the uneven pattern formed on the outer surface of the gravure roll 10 has an intaglio shape.

When the resist is applied to the outer surface of the gravure roll 10 by the dispenser 30, the resist should be applied only to the recessed portions 10a of the substantially intaglio shape as shown in the enlarged portion of FIG. However, when the dispenser 30 applies the resist to the outer surface of the gravure roll 10, it is difficult to apply the resist at a time such that the resist is selectively received only in the recessed portion 10a of the substantially engraved shape.

Therefore, when the dispenser 30 applies the resist to the outer surface of the gravure roll 10, the resist is widely spread on the outer surface of the gravure roll 10 and applied, and when the application is completed, except for the recessed groove 10a of the intaglio shape. By removing the resist applied to the surface 10b, i.e., unnecessary, the resist can finally be received only in the recess 10a. To this end, a doctor blade 20 is provided in the periphery of the gravure roll 10 to remove unnecessary resist.

The doctor blade 20 includes a knife holder 21 and a knife 22 coupled to the knife holder 21. The knife holder 21 has a structure that can be easily attached and detached at a predetermined position of the support 12 in this embodiment in a one-touch form. The knife 22 has a length substantially similar to that of the gravure roll 10, and is disposed to be inclined with respect to the outer surface of the gravure roll 10 while the tip thereof is in contact with the outer surface of the gravure roll 10. It scratches the outer surface.

In this way, since the tip of the knife 22 is in contact with the outer surface of the gravure roll 10, when a resist is applied to the outer surface of the rotating gravure roll 10, the recess 22 of the intaglio shape is formed by the knife 22. The resist applied to the remaining surface 10b except for the above may be naturally removed. Therefore, the resist can be finally received only in the recess 10a.

The doctor blade 20 is also installed to be fixed in the same position as the gravure roll 10. That is, in this embodiment, since the gravure roll 10 is a fixed type, the doctor blade 20 coupled to the gravure roll 10 is also provided as a fixed type. Therefore, the vibration of the doctor blade 20 is not significantly induced unlike the conventional doctor. It is possible to prevent the print quality from being lowered due to the vibration of the blade 20.

As described above, the dispenser 30 serves to apply a resist to the outer surface of the gravure roll 10. The dispenser 30 may be provided to be movable along the longitudinal direction of the gravure roll 10, to be able to move up and down at the corresponding position, or to be foldable in one direction. When such a structure is applied, the coating efficiency of the resist can be increased, and the interference with the surrounding structure can be avoided. Of course, the scope of the present invention need not be limited thereto.

The blanket roll 40 receives the resist applied in the groove portion 10a formed on the outer surface of the gravure roll 10, and more specifically, on the outer surface of the gravure roll 10, and loads the resist on the work stage 50. And prints a resist pattern on the first and second substrates G1 and G2 while moving and rotating toward the first and second substrates G1 and G2 which are fixed and suctioned in a vacuum.

On the outer surface of the blanket roll 40, a sheet to which a resist is transferred from the gravure roll 10 is wound. Of course, the sheet used more than the number of times the appropriate limit has to be replaced, so the blanket roll 40 is further provided with a sheet replacement means (not shown) for easy replacement of the sheet. The sheet replacement means serves to provide a certain tension to the sheet so that the sheet can be easily replaced, while the sheet is unfolded and stretched and wound on the outer surface of the blanket roll 40. The sheet replacement means is provided on one surface 40a (see FIG. 1) cut off from the blanket roll 40.

As described above, in the case of the printing apparatus of this embodiment, the blanket roll 40 is provided between the gravure roll 10 and the work stage 50, so that the blanket roll 40 receives the resist from the gravure roll 10. The blanket roll 40 must be able to move up and down in order to receive the transfer or to perform the printing operation on the first and second substrates G1 and G2.

In addition, in the printing apparatus of the present embodiment, since the work stage 50 is provided to be substantially fixed at the position, the blanket roll 40 must move toward the work stage 50 for the actual printing operation.

In summary, in the printing apparatus of this embodiment, the blanket roll 40 is moved up and down relative to the gravure roll 10 and moved while rotating relative to the work stage 50. Let's take a quick look at this.

Mainly referring to FIG. 4, in order for the blanket roll 40 to be lowered relative to the gravure roll 10, the blanket roll 40 is moved up and down to raise and lower the blanket roll 40 relative to the gravure roll 10. 70) is provided. In the present embodiment, the plurality of lifting driving units 70 are arranged in quadrangular configurations so as to be spaced apart from each other in the lower region of the blanket roll 40 with respect to the blanket roll 40. In other words, it serves to raise and lower the blanket roll 40 in four lower regions of the blanket roll 40.

The lift driver 70 includes a servomotor 71 rotatable in a forward and reverse direction, a ball screw 72 coupled to a motor shaft of the servomotor 71 along a direction in which the blanket roll 40 is lifted and lowered. , Coupled to the ball screw 72 is movable up and down along the longitudinal direction of the ball screw 72, at least one side (upper side) includes a roll support portion 73 is coupled to the blanket roll 40. Therefore, when power is applied to the servo motor 71 and the motor shaft of the servo motor 71 rotates in the forward and reverse directions, the ball screw 72 rotates in the forward and reverse directions coaxially with the blanket through the roll support 73. The roll 40 can be raised and lowered.

In the present exemplary embodiment, the sensing unit 75 which detects the phosphorous pressure of the blanket roll 40 with respect to the first and second substrates G1 and G2 is further coupled to each of the plurality of elevating driving units 70. The sensing unit 75 may be applied to the load cell 75, and the sensing unit 75 may detect a pressure caused by the blanket roll 40, which is a huge structure, thereby contributing to implementing a more accurate lifting and lowering movement.

In the periphery of the plurality of lifting drive units 70, the first and second substrates G1 and G2 may be used to control the pressure of the blanket roll 40 with respect to the first and second substrates G1 and G2. There is further provided a pressure adjusting balance unit 76 that elastically supports the load of the blanket roll 40. At this time, the balance unit 76 for adjusting the pressure may be applied to an air cylinder capable of adjusting the air pressure.

Due to the operation of the pressure adjusting balance unit 76, the elevating drive unit 70 loads the rest of the blanket roll 40, except for the supporting load of the pressure adjusting balance unit 76 from the load of the blanket roll 40 itself. Since the blanket roll 40 needs only to be raised and lowered while supporting, control of the operation | movement becomes easy. In particular, in the case of the present embodiment, the pressure adjusting balance unit 76 elastically supports most of the load of the blanket roll 40, so that the lifting and lowering drive unit 70 for the lifting and lowering movement of the blanket roll 40. It is possible to prevent the excessive force is required to implement the lifting and lowering movement of the blanket roll 40 without using a large lifting device 70.

In addition, in the present embodiment, when the blanket roll 40 is lowered by the retraction operation of the elevating drive unit 70 to contact the first and second substrates (G1, G2), under the load of the blanket roll 40 The blanket roll 40 is self-leveled (self-leveling) to the first and second substrates G1 and G2 by the load of the remaining blanket roll 40 except for the support load of the pressure adjusting balance unit 76. Here, the self leveling refers to a state in which the blanket roll 40 forms a uniform phosphorus pressure on the entire surfaces of the first and second substrates G1 and G2. Accordingly, even if the work stage 50 is slightly inclined due to processing accuracy or assembly error, the first and second substrates G1 and G2 supported on the work stage 50 are also slightly inclined, but the blanket roll is inclined slightly. As the 40 is self-leveled along the first and second substrates G1 and G2, the printing operation may be performed with uniform pressure. In practice, the blanket roll 40 has a weight of about several tons or more in a large printing apparatus such as the present embodiment, and thus the above-described action and effects related to the pressure control have been studied to be substantially large.

Next, the blanket roll 40 moves toward the work stage 50 while the print roll 40 is moved toward the work stage 50 so as to substantially advance the printing operation on the first and second substrates G1 and G2. It should be rotated on the upper surfaces of the substrates G1 and G2.

To this end, on both sides of the blanket roll 40, the blanket roll 40 is moved in a linear direction on the side rails 61 (see FIG. 1) of the lower base 60 as well as the blanket roll 40 is rotated at the corresponding position. The moving rotary part 42 is provided.

The moving rotary part 42 may be divided into a part 42a for moving the blanket roll 40 toward the work stage 50 and a part 42b for rotating the blanket roll 40. The former may be precisely controlled. Linear motion may be applied, and the latter may be applied with a DC motor.

The work stage 50 is a place where a printing operation is performed on the first and second substrates G1 and G2 by the blanket roll 40. It is supported by the lower base 60 by the column 65 (refer to FIG. 2), and may be made of a stone plate or a metal.

A plurality of vacuum holes 51 (refer to FIGS. 5 and 9) are formed on the surface of the work stage 50, and the first and second substrates G1 and G2 are subjected to the vacuum pressure by the vacuum holes 51. It is sucked and fixed to the loading position on the work stage 50 by this. For reference, FIGS. 6 to 8 do not show the vacuum hole 51 on the surface of the work stage 50 for convenience.

On the other hand, one substrate (not shown) is usually mounted on the work stage 50 to be printed, but in the present embodiment, two first and second substrates G1 and G2 are placed on the work stage 50. Loaded on and printed together. Therefore, the work stage 50 of the present exemplary embodiment has a dual work stage having first and second substrate loading parts (not shown) on which two first and second substrates G1 and G2 are loaded. 50 is provided. The first and second substrate loading units refer to places where the first and second substrates G1 and G2 are disposed as shown in FIGS. 7 to 9. At this time, the sizes of the first and second substrates G1 and G2 are not necessarily the same.

The dual work stage 50 may mean that two first and second substrates G1 and G2 are loaded in one body as in the present embodiment, but the work stage 50 itself is parallel. It may mean that two are provided.

As such, when the two first and second substrates G1 and G2 are loaded and printed on one work stage 50, the productivity may be significantly improved than in the related art.

However, in printing the first and second substrates G1 and G2 together, the first and second substrates G1 and G2 are not simply mounted on the work stage 50, that is, the work stage 50. It must be loaded correctly at the predetermined loading position of the image. Only then can the desired print quality be achieved. The alignment unit 80 is provided for this purpose. In other words, the alignment unit 80 of the present exemplary embodiment is provided in the work stage 50 to serve to align the first and second substrates G1 and G2 to the loading positions on the work stage 50.

When the alignment unit 80 is applied as in this embodiment, a resist pattern can be more effectively printed on the surfaces of the first and second substrates G1 and G2 such as an EMI filter for a PDP with a simpler and simpler structure. In addition, the first and second substrates G1 and G2 may be printed after being aligned to the loading position on the work stage 50 in a simple and efficient manner, thereby improving productivity.

In particular, when you want to print on a large substrate such as an 11th generation substrate having a width and length of about 3 meters (m) or a substrate of a corresponding size (such as a 7th generation or an 8th generation), a large substrate After the loading on the work stage 50 to align the large substrate using the alignment unit 80 of the present embodiment, the alignment operation is very easy.

On the other hand, while the work stage 50 itself may be attempted to align the large substrates, but to move the work stage 50 itself, the work stage 50 is equipped with various peripheral structures for movement. In addition, the device must be complicated, and the peripheral structures to be mounted also increase the overall foot print of the device, thereby increasing the cost.

However, even if the printing operation of the large substrate even if the large substrate is aligned on the work stage 50 using the alignment unit 80 of the present embodiment, the work stage 50 itself is aligned for the alignment operation of the large substrate. Not only can the device be simplified compared to the moving structure, but the device's footprint can be reduced. Referring to the alignment unit 80 that provides this effect in detail as follows.

2, 3, and 6 to 9, the alignment unit 80 may be disposed in an area between the first and second substrate loading units, in which the first and second substrates G1 and G2 are loaded. The work stage 50 is disposed at a position spaced apart from the first align stopper 81 and the first align stopper 81, which are arranged while being aligned with one side walls of the first and second substrates G1 and G2. The second alignment stopper 82 is disposed on an upper surface of the first and second substrates G1 and G2 to be aligned while the other side walls of the first and second substrates G1 and G2 are in close contact with each other.

In the present exemplary embodiment, two first alignment stoppers 81 are provided, and the first alignment stoppers 81 are provided to be movable in the upper surface of the work stage 50. In addition, the second alignment stopper 82 is provided to be fixed to the upper surface of one side of the work stage 50 as shown in FIGS. 2 and 6 to 9.

As such, since the two first alignment stoppers 81 are provided in a movable type, they may have a small structure, for example, a roller, and the second alignment stoppers 82 may have a rod structure because they are provided in a fixed type. Can be. However, since the scope of the present invention does not need to be limited thereto, both the first and second alignment stoppers 81 and 82 may be provided as a movable type or a fixed type as necessary. In addition, although two first alignment stoppers 81 are provided in the present embodiment, one or three or more first alignment stoppers 81 may be provided.

Unlike the second alignment stopper 82 provided in a fixed type, since the first alignment stopper 81 is provided as a movable type, a structure for moving the first alignment stopper 81 to the first alignment stopper 81 is provided. Are connected. Here, the movement includes vertical (up / down) movement in addition to horizontal movement.

In order that the first alignment stopper 81 can be moved, the alignment unit 80 of the present embodiment has the first alignment stopper 81 in the horizontal direction (see M1 in FIG. 6) in the longitudinal direction of the blanket roll 40. A power supply unit 84 for providing power to move horizontally along the), a mobile connection unit 85 for movably connecting the power supply unit 84 and the first alignment stopper 81, and one side of the mobile connection unit And an up / down driving unit 86 for driving the first alignment stopper 81 up / down in a state connected to the 85. The first alignment stopper 81 is moved by the power supply unit 84, the movable connection unit 85, and the up / down driving unit 86 together with the second alignment stopper 82, which is fixedly provided. And the second substrates G1 and G2 may be aligned.

The power supply unit 84 includes a servo motor 84a and a ball screw 84b coupled to a rotation shaft of the servo motor 84a. Of course, a cylinder or a linear motor may be applied in addition to the structure thereof.

The movable connection part 85 is connected to the ball screw 84b of the power supply part 84, and has a horizontal bar 85a and a horizontal bar 85a having a distance as long as two first align stoppers 81 are opened. It includes a vertical bar (85b) connected to the up / down driving unit 86 at both ends of the). Since the horizontal bar 85a and the vertical bar 85b are simple structures that are moved by the operation of the ball screw 84b, the horizontal bar 85a and the vertical bar 85b may be moved more efficiently to move the horizontal bar 85a and the vertical bar 85b. And the vertical bar 85b are further provided with linear guides 85c and 85d for guiding their movement, respectively. The linear guides 85c and 85d have a rail structure having a cross section dove tail structure.

The up / down driving unit 86 is provided as a cylinder coupled to the first alignment stopper 81 one by one. In the case of the present embodiment, since two first alignment stoppers 81 are applied, two up / down driving units 86 are also used.

With this structure, when the servo motor 84a is operated to move the ball screw 84b in the direction M1 of FIG. 81 is moved, and then, as the up / down driving unit 86 is operated, the first alignment stopper 81 moves up / down through the through hole 52 of the work stage 50 as shown in FIG. 3. down) can be driven.

For reference, when the first alignment stopper 81 is up through the through hole 52, the protruding height of the first alignment stopper 81 may be loaded at the loading position on the work stage 50. It should be disposed at a position lower than the heights of the second substrates G1 and G2. The same applies to the second alignment stopper 82 (see enlarged part of FIG. 2), so that a desired print quality can be obtained.

The power supply unit 84, the movable connection unit 85, and the up / down driving unit 86 described above are merely means for horizontally moving or vertically moving up / down the first alignment stopper 81. Substantially, one side walls of the first and second substrates G1 and G2 are in close contact with the first alignment stopper 81. Therefore, if the outer surface of the first alignment stopper 81 is made of a metal material or made of a fixed type, the first and second substrates G1 and G2 may be damaged during the alignment operation.

In order to prevent this, the first alignment stopper 81 of the present embodiment is manufactured in the structure as shown in FIG. That is, the first alignment stopper 81 of the present embodiment is coupled to the outside of the stopper main body 81a and the stopper main body 81a, which is coupled to the rod 86a of the cylinder as the up / down drive unit 86, and thus the first alignment stopper 81 And a stopper roller 81b made of an elastic material in which one side walls of the second substrates G1 and G2 are in close contact with the stopper body 81a and the stopper roller 81b to stop the stopper body 81a. And a bearing 81c for freely rotating the roller 81b. The bearing 81c may be a thrust bearing. The stopper body 81a and the stopper roller 81b may be coupled to a key 81d to prevent separation.

With this structure, when the first alignment stopper 81 is made, one side walls of the first and second substrates G1 and G2 are formed on the outer surface of the stopper roller 81b of elastic material freely rotated with respect to the stopper body 81a. Since it is in close contact with each other, it is possible to prevent the first and second substrates G1 and G2 from being damaged.

Meanwhile, one side wall or the other side walls of the first and second substrates G1 and G2 are in close contact with the first and second alignment stoppers 81 and 82, respectively, to the first and second substrates G1 and G2. In order for the aligning operation to proceed, a means for pressing the first and second substrates G1 and G2 toward the first and second alignment stoppers 81 and 82, that is, pushing is required. This is the responsibility of the first and second pushers 91 and 92.

The first pusher 91 is disposed opposite to the first alignment stopper 81 (in this case, on both sides) with the first and second substrates G1 and G2 interposed therebetween, so that the first and second substrates G1, It serves to push G2) toward the first alignment stopper 81. In addition, the second pusher 92 is disposed opposite to the second alignment stopper 82 with the first and second substrates G1 and G2 interposed therebetween, so that the first and second substrates G1 and G2 may be disposed in the first direction. It pushes toward the alignment stopper 81.

At this time, both the first and second pushers 91 and 92 are disposed to be accommodated in the plurality of first and second pusher moving slots 91a and 92a provided in the work stage 50, and the first and second pushers 91 and 92, if necessary. The first and second substrates G1 and G2 are moved along the first and second pusher movement slots 91a and 92a after being pushed up to the pusher movement slots 91a and 92a, respectively. Push toward the alignment stoppers (81, 82). Therefore, the first and second pushers 91 and 92 are also connected to components for horizontal movement or vertical (up / down) movement of the first and second pushers 91 and 92, which are described above. Reference numeral 84 will not be shown because of the similarity to the 84, the mobile connection 85 and the up / down driving unit 86.

A series of operations of the printing apparatus having such a configuration will be described below with reference to FIGS. 6 to 12.

In the case of FIG. 6, all components except for the first and second alignment stoppers 81 and 82 and the first and second pushers 91 and 92 are all provided in the lower region of the work stage 50, but for convenience. Shown in solid line.

In the state as shown in FIG. 6, first and second substrates G1 and G2 are moved to the first and second substrate loading units (not shown) on the work stage 50 by separate robots. Thereafter, the first alignment stopper 81 positioned between the first and second substrates G1 and G2 is operated by the operation of the power supply unit 84, the moving connection unit 85, and the up / down driving unit 86. It slightly protrudes from the surface of the work stage 50. As described above, the protruding height at this time is a position lower than the thicknesses of the first and second substrates G1 and G2.

Next, as shown in FIG. 7, the first and second substrates are disposed on opposite sides of the first alignment stopper 81 (in this case, both sides) with the first and second substrates G1 and G2 interposed therebetween. Push (G1, G2) toward the first alignment stopper 81 (see M2 and M3), whereby one side wall of the first and second substrates G1, G2 is in close contact with the first alignment stopper 81 do.

Then, as shown in FIG. 8, the second pusher 92 has the first and second substrates G1 and G2 interposed therebetween with the first and second substrates G1 and G2 opposite to the second alignment stopper 82. Is pushed toward the second alignment stopper 82 (see M4), and the other side walls of the first and second substrates G1 and G2 are brought into close contact with the second alignment stopper 82.

After the first and second substrates G1 and G2 are in close contact with the first and second alignment stoppers 81 and 82, the first alignment stopper 81 and the first and second pushers 91 and 92. ) Is evacuated to the lower region of the work stage 50, and then vacuum pressure is formed through the vacuum hole 51 as shown in FIG. 9, so that the first and second substrates G1 and G2 are finally positioned in the print job. It is fixed.

For reference, in the present exemplary embodiment, it has been described that the first and second substrates G1 and G2 are aligned with the first alignment stopper 81 first and then with the second alignment stopper 82. It may be aligned with the first alignment stopper 81 after being aligned with the second alignment stopper 82 first.

After the alignment operation is performed, the dispenser 30 applies the resist to the outer surface of the gravure roll 10. At this time, since the tip of the knife 22 of the doctor blade 20 is in contact with the outer surface of the gravure roll 10, in the process of applying a resist to the outer surface of the rotating gravure roll 10 by the knife 22 of the engraved form Unnecessary resist applied to the remaining surface 10b except for the recess 10a is removed. Therefore, the resist is finally received only in the recess 10a.

When the resist is applied to the outer surface of the gravure roll 10, in order to repair the resist coated with the blanket roll 40, as shown in Figure 10, by the operation of the plurality of lifting and lowering drive unit 70, the blanket roll ( 40 rises toward the gravure roll 10. As such, when the blanket roll 40 is raised to contact the gravure roll 10, the resist applied to the outer surface of the gravure roll 10 by the relative rotation between the gravure roll 10 and the blanket roll 40 is left as it is. It is transferred to the sheet wound on the outer surface of 40).

Next, after the blanket roll 40 receives the resist from the gravure roll 10, as shown in FIG. 11, the blanket roll 40 is moved by the operation of the plurality of lifting drive units 70. It is elastically supported by the balance unit 76 for adjusting the pressure while descending from the outer surface of the). This position becomes the printing position of the blanket roll 40 for a print job.

When the blanket roll 40 is disposed in the position for the print job, as shown in FIG. 12, the blanket roll 40 starts to move and rotate toward the work stage 50 by the operation of the movable rotary part 42. By the movement and rotation of the blanket roll 40, the resist may be retransmitted (printed) on the surfaces of the first and second substrates G1 and G2. When the print job is completed, the blanket roll 40 is returned to its original position and a new substrate is inserted to repeat the above-described operation.

As described above, according to the present embodiment, the resist pattern can be more effectively printed on the surfaces of the first and second substrates G1 and G2 such as the EMI filter for the PDP with a simpler and simpler structure than before. And after the second substrates G1 and G2 are aligned to the loading position on the work stage 50 in a simple and efficient manner, the productivity can be improved, and in particular, a large substrate is loaded onto the work stage 50. Alignment in position can simplify the device as well as reduce the foot print of the device compared to the structure of moving the work stage 50 itself for the alignment of large substrates.

In the above-described embodiment, the blanket roll is used to transfer the resist from the gravure roll, but instead of the gravure roll, a gravure plate having a rectangular plate shape is provided, and the blanket roll is removed from the gravure plate. It may be possible to transfer the resist.

In the above-described embodiment, two substrates are loaded and printed on the work stage, but three or more substrates may be loaded and printed as necessary. In this case, you only need to slightly change the number and position of the alignment stoppers.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

1 is a schematic structural diagram of a printing apparatus according to an embodiment of the present invention.

2 is an enlarged view of the work stage region.

FIG. 3 is an enlarged view of region A of FIG. 2.

4 and 5 are enlarged front and plan views, respectively, of the blanket roll region.

6 to 9 are diagrams illustrating steps in which first and second substrates are aligned, respectively.

10 to 12 are diagrams showing step-by-step printing operations for the aligned first and second substrates, respectively.

* Explanation of symbols for the main parts of the drawings

10: gravure roll 10a: groove

12: support 20: doctor blade

22: knife 30: dispenser

40: blanket roll 50: work stage

60: lower base 70: lifting and lowering drive

80: alignment part 81: first alignment stopper

82: second alignment stopper 84: power supply unit

85: mobile connection 86: up / down drive unit

91: first pusher 92: second pusher

Claims (18)

A work stage on which a plurality of substrates are loaded on a top surface, and a printing operation is performed on the plurality of substrates; Gravure spaced from the work stage, the resist is applied to the outer surface (Gravure); A blanket roll provided to be accessible to and spaced apart from the gravure and transferring the resist from the gravure to retransition to a substrate on the work stage; And And an alignment portion provided on the work stage to align the plurality of substrates to a loading position on the work stage. The method of claim 1, And the work stage is a dual work stage having a first and a second substrate loading section on which two first and second substrates are loaded. The method of claim 2, The alignment unit, A first align stopper disposed in an area between the first and second substrate loading parts and aligned with one side walls of the first and second substrates in close contact with each other; And And a second alignment stopper disposed on an upper surface of the work stage at a position spaced apart from the first alignment stopper and aligned while the other side walls of the first and second substrates are in close contact with each other. . The method of claim 3, The plurality of first alignment stoppers are provided with a plurality of spaced apart from each other, the movable type movable in the upper surface of the work stage, the second alignment stopper is a fixed type fixed to the upper surface of one side of the work stage Device. The method of claim 4, wherein The alignment unit, A power supply unit configured to provide power to move the plurality of first alignment stoppers horizontally in a horizontal direction in a length direction of the blanket roll; A moving connection unit for movably connecting the plurality of first alignment stoppers to the power providing unit; And And an up / down driving unit configured to up / down drive the plurality of first alignment stoppers when one side is connected to the mobile connection unit. The method of claim 5, The power providing unit, Servo motor; And It includes a ball screw coupled to the rotation axis of the servo motor, The mobile connection unit, A horizontal bar connected to the ball screw; And And a vertical bar connected to the up / down driving part at both ends of the horizontal bar. The method of claim 6, The horizontal bar and the vertical bar is a printing device, characterized in that the linear guide is further coupled to guide the movement of the horizontal bar and the vertical bar. The method of claim 5, And the up / down driving unit is a cylinder coupled to the first alignment stopper one by one. The method of claim 8, The first align stopper, A stopper body coupled to the rod of the cylinder; An elastic stopper roller which is coupled to the outside of the stopper body so that one side walls of the first and second substrates are in close contact with each other; And And a bearing disposed between the stopper body and the stopper roller to freely rotate the stopper roller with respect to the stopper body. 10. The method of claim 9, And the stopper body and the stopper roller are keyed. The method of claim 4, wherein The alignment unit, A plurality of first pushers disposed opposite the first align stopper with the substrate interposed therebetween to push the first and second substrates toward the first align stopper; And And a plurality of second pushers disposed opposite the second align stopper with the substrate interposed therebetween to push the first and second substrates toward the second align stopper. Printing device. The method of claim 11, The work stage is formed with a plurality of slots for moving the first and second pushers, the first and second pushers are moved, And the first and second pushers are provided to be movable up / down within the slots for moving the first and second pushers. The method of claim 4, wherein And a protrusion height of the first and second alignment stoppers is disposed at a position lower than a height of the substrate loaded at a loading position on the work stage. The method of claim 4, wherein And a plurality of vacuum holes are further formed on a surface of the work stage. The method of claim 1, And the gravure is a roll-shaped gravure roll fixed to an upper region at a position spaced apart from the work stage, and the blanket roll is disposed between the work stage and the gravure roll. The method of claim 15, A lift drive unit coupled to the blanket roll to move the blanket roll up and down with respect to the gravure roll; And And a moving rotary part coupled to both sides of the blanket roll to move and rotate the blanket roll with respect to the substrate loaded on the work stage in order to proceed with the printing operation. The method of claim 15, A dispenser for applying the resist to an outer surface of the gravure roll; And And a doctor blade (Dr. Blade) disposed around the dispenser to remove unnecessary resist from the resist applied to the outer surface of the gravure roll. The method of claim 1, And the substrate is an electromagnetic interference (EMI) filter for a plasma display panel (PDP).

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