KR100807676B1 - Printer - Google Patents

Abstract

A printing apparatus is provided to reduce work loss caused by replacement of a gravure roll by enabling replacement of a gravure roll in an easier method. A roll driving transfer part(15) rotatively drives a gravure roll(10), installed in at least one of both sides of the gravure roll that transfers one color resist selected from R, G and B color resists to the outer surface of a blanket roll for printing at least one pattern of R, G and B patterns on the surface of a substrate. A pocket(80) is installed between the roll driving transfer part and connects the gravure roll to the roll driving transfer part wherein the gravure roll can be detached from the roll driving transfer part. The pocket can include a fixing pocket part coupled to the roll driving transfer part, an operating pocket part(85), and a coupling part for coupling the operating pocket part to the fixing pocket part. The rotation axis of the gravure roll is partially disposed in the fixing pocket part. The operating pocket part is detachably coupled to the fixing pocket part wherein the fixing pocket part and the operating pocket part are positioned at both sides of the rotation axis of the gravure roll.

Description

Print Device {Printer}

1A and 1B are diagrams showing two types of structures of color filter layers printed with R, G, and B patterns, respectively.

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

FIG. 3 is an enlarged perspective view of a pocket portion in the printing apparatus shown in FIG. 2.

4A is a partially exploded perspective view of FIG. 3.

4B is a perspective view of FIG. 4A from another angle.

5 is a schematic cross-sectional view of FIG. 3.

6 is a partial cross-sectional view of a pocket portion in a printing apparatus according to another embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

10: gravure roll 10a: groove

11: rotating shaft 15: roll drive transmission portion

12: support 20: doctor blade

22: knife 30: dispenser

40: blanket roll 50: work stage

60: lower base 70: work table

80: pocket 81: fixed pocket

85: movable pocket portion 87: fastening portion

90: position adjusting unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus, and more particularly, to a printing apparatus capable of replacing a gravure roll by an easier method than the prior art and thus reducing the work loss caused by the replacement of the gravure roll.

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).

A flat panel display typically has a color filter layer for realizing color. A color filter having a black matrix for preventing light from leaking to areas other than the image display area and degrading the image quality of the display device is formed. It is provided.

A typical flat panel display having such a color filter is the LCD described above. The LCD includes a thin film transistor substrate on which a thin film transistor is formed, a color filter substrate on which a color filter layer is formed, and a liquid crystal filled between these substrates.

In the color filter layer, as shown in Figs. 1A and 1B showing two types of color filter layers in which R, G, and B patterns are printed, respectively, R (Red), G (Green), and B (Blue) are typically used. A pixel having a pigment of the pattern is formed. Each pixel may consist of sub-pixels having R, G, and B, but in general, each pixel has one pigment.

In forming the color filter layer, as shown in FIG. 1A, the R, G, and B patterns may be regularly arranged in a line such that the R, G, and B patterns are arranged in the same column, respectively, or as shown in FIG. 1B. Similarly, R, G, and B patterns may be repeatedly arranged in the same row. The difference in resolution can be realized in various ways according to the arrangement of the R, G, and B patterns.

Such a color filter layer can be produced by various methods, for example, dyeing, printing, electrodeposition, pigment dispersion. STN (Super Twisted Nematic) LCD, which is one of the conventional passive matrix methods, mainly produces color filter layers by dyeing, printing, and adhesive methods, but it is an active matrix method that has excellent elaboration, good reproducibility, and is applicable to large-area liquid crystals. In TFT (Thin Film Transistor) LCD, pigment dispersion method is mainly used.

In the pigment dispersion method, a color filter layer is produced by forming a pattern of photosensitive color resist by a general photo process. That is, a color filter layer is completed by applying a photosensitive color resist onto a substrate, irradiating light with a mask, and then applying a developer to form a desired pattern.

As such, a photo process is required to form a color filter by the pigment dispersion method, and this photo process causes a problem that the process is not only complicated but also expensive to manufacture. Furthermore, the process is further complicated since the photo process must be repeated three times in order to form pixels corresponding to the dyes of the R, G, and B patterns.

Recently, a method of using the printing method in the TFT LCD field has been proposed to overcome the problems of the pigment dispersion method.

The printing method includes a gravure filled gravure and a corresponding roll to form a color resist pattern of the dye on the substrate by the action of a roll, and then another color color resist by another roll. To form sequentially. That is, after applying R, G, B color resist (color ink, color pigment) to the outer surface of the gravure roll, a blanket roll is contacted with the outer surface of the gravure roll to form R, After receiving the G and B color resists, R, G, and B patterns are formed on the substrate by the action of a blanket roll.

If such a printing method can be put into practical use, the process of manufacturing a color filter layer by printing R, G, and B patterns on a substrate can be performed more quickly and effectively. However, an apparatus capable of manufacturing a color filter layer using such a printing method (hereinafter, Printing device) has not been put to practical use. Therefore, research and development for such a printing device is actively in progress.

On the other hand, as the preference for large TVs of 40 inches or larger and large monitors of 20 inches or larger has increased in recent years, manufacturers of LCDs have a width of 2 meters (m) in width and length to produce wider substrates. Research to increase the size of the substrate to the above eight generations is underway, and practical commercialization is expected soon.

Therefore, the size, volume, and weight of the blanket roll, the gravure roll, and the like provided in the printing apparatus for processing such a large area substrate are inevitably huge. In particular, since the gravure roll may be selectively applied according to the size of the substrate to be manufactured, and the gravure roll is often replaced at the corresponding position of the printing apparatus for maintenance, etc., at least in the case of gravure roll It is necessary to have a structure that can be easily detached from the device.

By the way, in the printing apparatus that has been researched and developed until now, the gravure rolls must be partially or completely disassembled, for example, a portion of the gravure roll's surrounding structures, for example, a portion that rotationally drives the gravure roll or a portion that rotatably supports the gravure roll. Since it is known to have a rather complicated configuration to separate the rolls, it is expected that the replacement of the gravure roll will not be easy when the roll is applied, which will cause considerable work loss. Therefore, the development of a new structure is needed. to be.

An object of the present invention is to provide a printing apparatus that can replace the gravure roll in an easier manner than the conventional method, thereby reducing the work loss due to the replacement of the gravure roll, and also can be easily maintained.

Another object of the present invention is to provide a printing apparatus which can easily adjust the eccentricity and the horizontal axis with respect to the gravure roll.

According to the present invention, a color resist selected from among R, G, and B color resists is used as an outer surface of a blanket roll for printing at least one of R, G, and B patterns onto a surface of a substrate. A roll drive transfer unit provided on at least one side of both sides of a gravure roll to transfer the gravure roll; And a pocket provided between the roll drive transfer unit and the gravure roll to detachably connect the gravure roll to the roll drive transfer unit.

Here, the roll drive transfer portion is provided on both sides of the gravure roll, the pocket is provided on both sides of the gravure roll, the pocket is rotated together with the gravure roll in accordance with the rotation of the roll drive transfer portion, the pocket It may be partially coupled to the roll drive transmission side.

The pocket may be coupled to the roll driving transmission part, and a fixed pocket part in which a rotation shaft of the gravure roll is partially disposed; A movable pocket part detachably coupled to the fixed pocket part with the rotation axis of the gravure roll interposed therebetween; And a fastening part for fastening the movable pocket part to the fixed pocket part.

The fixed pocket portion, a truncated cone-shaped body portion; And a cutout portion that is cut in a radially inward direction at a portion of the side surface of the body portion to form a space in which the rotation axis of the gravure roll is disposed.

The movable pocket part may have a block shape disposed at the cutout of the fixed pocket part.

An insertion groove portion into which the rotary shaft is partially inserted may be formed on at least one surface of the cutout portion of the fixed pocket portion and the movable pocket portion in contact with the rotary shaft of the gravure roll.

Inserting grooves respectively formed on the inner surface of the fixed pocket portion and the movable pocket portion may have a semi-circular shape.

On the other hand, the above object, according to the present invention, any color selected from among R, G, B color resist as the outer surface of the blanket roll (Blanket roll) for printing at least one of the R, G, B pattern on the surface of the substrate A roll driving transfer unit provided on at least one side of both sides of a gravure roll for transferring the resist to rotate the gravure roll; A pocket provided between the roll driving transfer unit and the gravure roll to connect the gravure roll to the roll driving transfer unit, the pocket being coupled to partially insert the rotation axis of the gravure roll; And coupled to the pocket may include a position adjusting unit for adjusting the relative position of the rotation axis with respect to the pocket.

Here, the pocket is coupled to the roll drive transmission portion, the fixed pocket portion that the rotation axis of the gravure roll is partially disposed; A movable pocket part detachably coupled to the fixed pocket part with the rotation axis of the gravure roll interposed therebetween; And a fastening part for fastening the movable pocket part to the fixed pocket part.

The position adjusting unit is coupled to at least one of the fixed pocket portion and the movable pocket portion so as to be movable along the radial direction of the rotary shaft, thereby positioning the position of the rotary shaft located between the fixed pocket portion and the movable pocket portion. It may include at least one positioning bolt to adjust.

The position adjusting bolt may be provided in the fixing pocket portion.

The position adjusting bolt may be provided in a plurality radially about the rotation axis on the fixed pocket portion.

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.

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

As shown in this figure, the printing apparatus according to an embodiment of the present invention, the gravure roll (10, Gravure roll), the outer surface of the gravure roll 10 R (Red), G (Green), B ( Blue) Dispenser 30 for applying any one of the color resists (color ink, color pigment) and doctor blade for removing unnecessary color resists among the color resists applied to the outer surface of the gravure roll 10 ( 20, Dr. Blade) and any one of R, G, and B color resists are transferred from the gravure roll 10 to R, G, and B on the surface of the color filter substrate (hereinafter referred to as substrate G). A blanket roll 40 for printing any of the patterns, a work stage 50 through which a print job of any one of R, G, and B patterns on the substrate G is performed, The work table 70 which transfers the board | substrate G to the upper surface of the work stage 50, and these are supported. And a lower base (60).

The gravure roll 10 serves to transfer any color resist selected from R, G, and B color resists to the outer surface of the blanket roll 40. Thus, the gravure roll 10 and the blanket roll 40 have substantially similar volumes.

As will be described in detail later, the gravure roll 10 is rotatable at the corresponding position by the roll driving transmission unit 15 coupled to the left and right pairs of the support units 12 fixed to the lower base 60. Although not specifically illustrated, the roll drive transmission unit 15 may be a bearing for rotating the gravure roll 10 while rotating by a motor or the like. In this embodiment, the gravure roll 10 is not directly coupled to the roll drive transfer unit 15, but is coupled to a pocket 80 coupled to the roll drive transfer unit 15.

Due to the structure of the pocket 80, the mounting and disassembly assembly process of the gravure roll 10, that is, the replacement operation can be made very easy, and thus the work loss due to the replacement of the gravure roll 10 can be reduced. Will be. On the other hand, the pocket 80 serves to adjust the eccentricity and horizontal axis of the gravure roll 10, in addition to the role of the connecting portion to facilitate the replacement operation of the gravure roll 10, the detailed structure of such a pocket 80 This will be described later.

For reference, as described above with reference to FIGS. 1A and 1B, in printing the R, G, and B patterns on the substrate G, the R, G, and B patterns may not be simultaneously printed on the substrate G through one printing apparatus. Do not. That is, in order to print the R, G, and B patterns on the substrate G, at least three printing apparatuses are provided, and each of the R, G, and B patterns is selected and printed on the substrate G by the three printing apparatuses. .

Therefore, the dispenser 30 which first applies the color resist to the outer surface of the gravure roll 10 by the dispenser 30 has only one color resist selected from the R, G, and B color resists on the outer surface of the gravure roll 10. Will be applied. Expressed easily, the dispenser 30 applies only ink of any color selected from red, green and blue to the outer surface of the gravure roll 10.

Although not shown in detail, the outer surface of the gravure roll 10 is formed with a concave-convex pattern substantially covered with color resist (coated). At this time, the uneven pattern may be embossed or engraved. In the embossed form, the color resist is applied to the outer surface of the protruding convex and concave portion (not shown) to transfer to the blanket roll 40. In the engraved form, the color resist is applied to the inside of the recessed recess 10a. Transition to (40).

However, the blanket roll 40 receives the color resist from the outer surface of the gravure roll 10 and retransfers (prints) it onto the substrate G to form R, G, and B patterns having a shape as shown in FIGS. 1A and 1B. In this case, in order to maintain the thickness of the R, G, and B patterns uniformly from the surface of the substrate G, it may be advantageous that the uneven pattern formed on the outer surface of the gravure roll 10 has a negative shape.

When any of the color resists selected from among R, G, and B color resists is applied to the outer surface of the gravure roll 10 by the dispenser 30, as shown in the enlarged portion B of FIG. The color resist should be applied only to the recess 10a. However, when the dispenser 30 applies the color resist to the outer surface of the gravure roll 10, it is difficult to apply the color resist at a time such that the color resist is selectively received only in the recess portion 10a of the substantially engraved shape.

Therefore, when the dispenser 30 applies the color resist to the outer surface of the gravure roll 10, the color resist is widely spread on the outer surface of the gravure roll 10 and applied, and when the application is completed, the recess 10a of the intaglio shape is completed. By removing the unnecessary color resist applied to the remaining surface 10b, the color resist is finally contained only in the recess 10a. To this end, the doctor blade 20 is provided in the periphery of the gravure roll 10 to remove unnecessary color 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 the length of the gravure roll 10, and is inclined with respect to the outer surface of the gravure roll 10 in a state where 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 the color resist is applied to the outer surface of the rotating gravure roll 10, the recess 22 of the intaglio shape by the knife 22 The color resist applied to the remaining surface 10b except for may be removed naturally. Therefore, finally, the color resist can be accommodated only in the recess 10a (see FIG. 2B).

As described above, the dispenser 30 serves to apply color resist to the outer surface of the gravure roll 10. The dispenser 30 is provided to be movable along the longitudinal direction of the gravure roll 10 as well as to be able to be lifted or folded in one direction at the corresponding position. Therefore, the coating efficiency of the color resist can be improved, and interference with the surrounding structure can be avoided.

The blanket roll 40 is rotated by transferring the color resist applied in the groove portion 10a formed on the outer surface of the gravure roll 10, and more particularly, on the outer surface of the gravure roll 10. And a substantially printing roll for printing the R, G, and B patterns as shown in FIG. 1B.

On the outer surface of the blanket roll 40, a sheet to which the color resist is transferred from the gravure roll 10 is wound. Of course, the sheet used by the number of times more than 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. 2) cut off from the blanket roll 40.

The blanket roll 40 must be accessible and spaced apart from the gravure roll 10 as well as able to rotate on the top surface of the substrate G loaded on the work stage 50. To this end, both sides of the blanket roll 40 on the side rails 61 of the lower base 60 to move the blanket roll 40 in a linear direction, as well as to move the rotary roll to rotate the blanket roll 40 at the corresponding position ( 42). The structure for moving the blanket roll 40 in the moving rotation part 42 may be, for example, a linear motion or the like capable of precise control.

The work stage 50 is a place where the printing operation of the R, G, and B patterns on the substrate G proceeds. The work stage 50 may be made of a stone slab of a stone material, not a metal material. When used as a work stage 50 as a stone slab, strict dimensional control is possible, and there is an advantage that particle defects due to friction with the substrate G are not generated.

Although not shown in detail, a tiled air line (not shown) is formed on the surface of the work stage 50, and the substrate G is floated on an intersection point where the tiled air lines cross each other or on a tiled air line. A plurality of air buoys (not shown) are formed for injecting air to make air.

The substrate G may be lifted a predetermined height from the upper surface of the work stage 50 by the air injected through the air floating holes and the tiled air line. However, when the substrate G in the floating state from the work table 70 is delivered, the substrate G rises from the upper surface of the work stage 50. However, when the printing operation is substantially performed, the substrate G is moved. Adsorbed onto the surface of the stage 50. Therefore, air is injected through the tiled air line, or air is adsorbed.

For reference, an alignment of the substrate G loaded onto the upper surface of the work stage 50 and adsorbed to the upper surface of the work stage 50 may be an alignment portion (not shown) provided around the work stage 50. Is in charge. That is, the alignment unit moves the work stage 50 itself to the X-axis, Y-axis, Z-axis, and θ-axis to align the substrate G with respect to the blanket roll 40 serving as a reference for the work. .

The work table 70 is responsible for transferring the substrate G to the work stage 50. In other words, the work table 70 is a conveying means for conveying the substrate (G).

As described above, since the process operation using the 8th generation substrate G having a width and a width of 2 m or more in the roots is performed, it is difficult to transfer the substrate G by a simple adsorption method. . Therefore, as an alternative, the substrate G must be transferred after the substrate G is floated, and this manner is applied to the work table 70.

That is, a plurality of air floating holes (not shown) are formed on the surface of the work table 70, which may be manufactured as a substantially rectangular plate, in which air for injecting the substrate G is injected. In addition, a plurality of air exhaust holes (not shown) are ejected toward the substrate G to lift the backflow by hitting the substrate G to float the substrate G in order to float the air floating holes. have. Unlike the work stage 50, the work table 70 may be made of a metal material, for example, aluminum or stainless steel.

3 is an enlarged perspective view of a pocket portion of the printing apparatus shown in FIG. 2, FIG. 4A is a partially exploded perspective view of FIG. 3, and FIG. 4B is a perspective view showing FIG. 4A from another angle, and FIG. 5. Is a schematic cross-sectional view of FIG.

As described above, the gravure roll 10 may be selectively applied according to the size of the substrate G to be manufactured, and for the maintenance or the like, the gravure roll 10 may be formed at a corresponding position of the printing apparatus, namely, Often replaced in the roll drive transmission portion 15 coupled to the pair of supports 12, for easy replacement of the gravure roll 10, also the eccentric and horizontal axis with respect to the gravure roll 10 Pocket 80 is provided for easy adjustment. These pockets 80 are provided on both sides of the gravure roll 10, as shown in Figures 3 to 5 below, only one pocket 80 will be described.

The pocket 80 is provided between the roll drive transfer unit 15 and the gravure roll 10 to serve to interconnect the roll drive transfer unit 15 and the gravure roll 10. In this embodiment, the pocket 80 is partially coupled to the roll drive transmission portion 15 side. That is, the roll drive transmission unit 15 and the pocket 80 are partially coupled to each other to form a body. However, the present invention is not limited thereto. After the rotary shaft 11 of the gravure roll 10 is coupled to the pocket 80, when the roll driving transmission unit 15 rotates in one direction, the gravure roll 10 and the pocket 80 are roll driving transmission units 15. Rotate together.

The pocket 80 has a fixed pocket portion 81 in which the rotary shaft 11 of the gravure roll 10 is partially disposed, and a fixed pocket portion 81 with the rotary shaft 11 of the gravure roll 10 interposed therebetween. It includes a movable pocket portion 85 that is detachably coupled to the fastening portion 87 for fastening the movable pocket portion 85 to the fixed pocket portion 81.

The fixed pocket portion 81 is coupled to the roll drive transfer portion 15 to form a body with the roll drive transfer portion 15. The fixed pocket portion 81 is a truncated cone-shaped body portion 82, and the radial portion incision in the radially inward partial region of the body portion 82 is a space in which the rotary shaft 11 of the gravure roll 10 is disposed A cutout portion 83 is formed.

Of course, the body portion 82 of the fixing pocket 81 is not necessarily a truncated cone. That is, a simple rod type may be sufficient, or square or triangular bar shape may be sufficient. Therefore, the shape of the fixed pocket portion 81 is not necessarily limited to the drawings attached to this embodiment.

On one surface of the cutout portion 83, that is, the inner surface of the surface in contact with the movable pocket portion 85, an insertion groove portion 81a into which the rotary shaft 11 of the gravure roll 10 is partially inserted is formed. The insertion groove 81a has a substantially semicircular shape. Therefore, when the rotary shaft 11 of the gravure roll 10 is disposed in the insertion groove portion 81a, a portion (approximately half) of the rotary shaft 11 is inserted into the insertion groove portion 81a, and the remaining upper portion is the movable pocket portion 85. Is inserted into the insertion groove (85a).

While the fixed pocket portion 81 has a truncated cone shape, the movable pocket portion 85 has a substantially rectangular block shape and is disposed in the cutout area 83 of the fixed pocket portion 81. The volume of the movable pocket 85 is sufficient to cover the rotary shaft 11 of the gravure roll 10. Therefore, it is not necessary to match the volume of the movable pocket 85 with the volume of the incision 83 region.

In addition, since the movable pocket portion 85 is configured to wrap and fix the rotary shaft 11 of the gravure roll 10 together with the fixed pocket portion 81, a rectangular block shape is not necessarily required as illustrated. However, as shown in the figure, when the movable pocket portion 85 is provided in a rectangular block shape, it may be advantageous to implement the fastening portion 87.

On one surface of the movable pocket portion 85, that is, the inner surface of the surface in contact with the fixed pocket portion 81, the rotary shaft 11 of the gravure roll 10 together with the insertion groove portion 81a formed in the fixed pocket portion 81 An insertion groove 85a is formed to surround the support. The insertion groove portion 85a formed in the movable pocket portion 85 also has a semicircular shape similarly to the insertion groove portion 81a formed in the fixed pocket portion 81.

The fastening part 87 is inserted into the plurality of fastening holes 87a and 87b and the plurality of fastening holes 87a and 87b respectively formed in the movable pocket part 85 and the fixed pocket part 81 to fix the fixed pocket part ( A fastening bolt 87c for fastening and fixing the movable pocket portion 85 with respect to 81. In this embodiment, a total of four fastening bolts 87c are used.

A series of operations of the printing apparatus having such a configuration and the replacement process of the gravure roll 10 will be described sequentially.

First, the substrate G starts entering the work table 70 by a separate transfer device. Then, the air is injected through the plurality of air floating holes formed in the work table 70, so that the substrate G enters the work table 70 while being lifted a predetermined height upward from the upper surface of the work table 70. Although not described, the substrate G entering the work table 70 may be aligned on the work table 70 by front / rear and left / right alignment parts provided around the work table 70. .

The substrate G floating on the upper surface of the work table 70 is transferred to the upper surface of the work stage 50 by a separate vacuum suction member. The vacuum suction member serves to transfer the substrate G to the work stage 50 in a state where the upper surface of the substrate G is adsorbed. Such a vacuum suction member may be mounted as a separate structure above the work table 70. At this time, since the air is injected into the work stage 50 through the tiled air line, the substrate G transferred onto the work stage 50 takes a state of being injured at a predetermined height on the upper surface of the work stage 50. do. Subsequently, when the injection process of the air is stopped, the injection of air is completed and the substrate G is loaded onto the upper surface of the work stage 50. Then, the air is adsorbed through the tiled air line, so that the substrate G is adsorbed on the upper surface of the work stage 50 to be fixed.

When the substrate G is fixed by being fixed on the upper surface of the work stage 50, the relative alignment process of the substrate G with respect to the blanket roll 40 is performed. That is, the alignment of the substrate G proceeds while the work stage 50 is moved to the X-axis, Y-axis, Z-axis, and θ-axis by the alignment portion provided around the work stage 50.

Next, the dispenser 30 applies one color resist selected from R, G, and B color resists 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, the knife 22 is applied to the outer surface of the rotating gravure roll 10 by the knife 22. Unnecessary color resist applied to the remaining surface 10b except the recessed portion 10a is removed. Therefore, finally, the color resist is accommodated only in the recess 10a.

When the color resist is applied to the outer surface of the gravure roll 10, the blanket roll 40 is moved toward the gravure roll 10 by the moving rotation part 42. When the blanket roll 40 is moved to contact the gravure roll 10, the color 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 intact. It is transferred to the sheet wound on the outer surface of 40). After the color resist is transferred to the outer surface of the blanket roll 40, the blanket roll 40 is moved to the initial part of the work stage 50 by the moving rotation part 42 again.

Then, the blanket roll 40 prints any pattern selected from the R, G, and B patterns on the surface of the substrate G while moving and rotating the surface of the substrate G by the moving rotation part 42 (retransition). ) When the print job is completed, the blanket roll 40 is returned to its original position, and the substrate G having finished the print job is taken out and transferred to another printing apparatus for printing a different pattern among R, G, and B patterns, thereby performing the above-described process. Will repeat.

On the other hand, if you want to perform the maintenance of the gravure roll 10 in the course of the above series of operations or to select and replace the gravure roll 10 suitable for the size of the substrate (G), Figure 2 Gravure roll (10) attached to the printing device of the should be removed. Replacement work for the gravure roll 10 is as follows.

First, after adjusting the movable pocket 85 to be positioned above the fixed pocket 81, the four fastening bolts 87c fastened to the movable pocket 85 are loosened. Then, the movable pocket portion 85 is separated from the fixed pocket portion 81. This operation is performed to all the pockets 80 arranged on both sides of the gravure roll 10.

After the movable pocket portion 85 is separated, since the rotary shaft 11 of the gravure roll 10 is partially inserted into the insertion groove portion 81a of the fixed pocket portion 81, the gravure roll 10 is maintained in this state. For example, the pocket 80 may be separated from the pocket 80.

Next, a new gravure roll (not shown) is prepared, and the rotating shaft 11 (not shown) of the new gravure roll is partially inserted into the insertion groove portion 81a of the fixed pocket portion 81. Then, the movable pocket portion 85 is disposed in the cutout portion 83 of the fixed pocket portion 81, and the insertion groove portion 85a of the movable pocket portion 85 together with the insertion groove portion 81a of the fixed pocket portion 81. The rotary shaft 11 of the gravure roll is wrapped and supported by). In this state, the four fastening bolts 87c are inserted into the fastening holes 87a of the movable pocket portion 85 and fastened to the fastening holes 87b of the fixed pocket portion 81, thereby replacing the gravure roll 10. You can easily finish your work. Therefore, it is possible to reduce various losses such as a work loss due to the replacement of the gravure roll 10, for example, an increase in work time, an increase in workforce, and an increase in work manpower.

6 is a partial cross-sectional view of a pocket portion in a printing apparatus according to another embodiment of the present invention.

In the present embodiment, the pocket 80 serves to adjust the eccentricity and the horizontal axis of the gravure roll 10 in addition to the role of easily replacing the gravure roll 10.

For reference, in order for the color resist applied on the outer surface of the gravure roll 10 to be accurately and precisely transferred to the outer surface of the blanket roll 40, the gravure roll 10 and the blanket roll 40 must be in precise contact with each other. . Otherwise, if some gap occurs between the gravure roll 10 and the blanket roll 40, the color resist applied to the outer surface of the gravure roll 10 may not be accurately transferred to the outer surface of the blanket roll 40. Therefore, when this phenomenon occurs, it is necessary to adjust the eccentricity and the horizontal axis of the gravure roll 10, in this case it is easily solved by using the position adjusting unit 90 provided in the pocket (80).

As a result, the position adjusting unit 90 presses the rotary shaft 11 of the gravure roll 10 fixed in the form inserted into the pocket 80 in one direction, so that the position of the rotary shaft 11 with respect to the pocket 80 is increased. By adjusting the overall eccentricity and the horizontal axis with respect to the gravure roll (10).

The position adjusting unit 90 is coupled to the fixed pocket portion 81 so as to be movable along the radial direction of the rotary shaft 11, the rotary shaft 11 is located between the fixed pocket portion 81 and the movable pocket portion 85 At least one position adjusting bolt 90 to adjust the position of the. Of course, the positioning bolt 90 may be provided in the movable pocket portion 85.

On the other hand, in order for the rotation shaft 11 to be pushed in one direction by the position adjusting bolt 90, the diameters of the insertion grooves 81a and 85a respectively provided in the fixed pocket portion 81 and the movable pocket portion 85 are It should be at least larger than the diameter of the rotating shaft 11. Only then, the rotation shaft 11 inserted into the insertion grooves 81a and 85a may be pushed in one direction by the operation of the position adjusting bolt 90 and the position thereof may be adjusted.

In order to more accurately and effectively perform the position adjustment with respect to the rotary shaft 11 of the gravure roll 10, the position adjusting bolt 90 is provided in plurality in the fixed pocket portion 81, the rotation axis 11 Are arranged radially. Therefore, the operator presses the rotary shaft 11 in one direction by rotating the positioning bolt 90 in the radially arranged positioning bolt 90 according to the eccentricity and the horizontal axis of the gravure roll 10, the gravure roll 10 Eccentricity and horizontal axis can be easily matched.

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.

As described above, according to the present invention, it is possible to replace the gravure roll in an easier way than the conventional method can reduce the operation loss (loss) due to the replacement of the gravure roll, it can also be easy to maintain. Thereby, productivity can be improved.

In addition, according to the present invention, the eccentricity and the horizontal axis with respect to the gravure roll can be easily adjusted.

Claims (12)

The gravure roll transfers any color resist selected from R, G and B color resists to the outer surface of the blanket roll printing at least one of R, G and B patterns onto the surface of the substrate. Roll drive transmission unit provided on at least one side of both sides to rotate the gravure roll; And And a pocket provided between the roll drive transfer unit and the gravure roll to detachably connect the gravure roll to the roll drive transfer unit. The method of claim 1, The roll drive transmission unit is provided on both sides of the gravure roll, the pocket is provided on both sides of the gravure roll, And the pocket is partially coupled to the roll drive transfer unit side such that the pocket is rotated together with the gravure roll according to the rotation of the roll drive transfer unit. The method according to claim 1 or 2, The pocket, A fixed pocket part coupled to the roll driving transmission part, the rotation shaft of the gravure roll being partially disposed; A movable pocket part detachably coupled to the fixed pocket part with the rotation axis of the gravure roll interposed therebetween; And And a fastening part for fastening the movable pocket part to the fixed pocket part. The method of claim 3, The fixed pocket portion, Truncated conical body; And And a cutout portion which is cut in a radially inward direction at a portion of the side surface of the body portion to form a space in which the rotation axis of the gravure roll is disposed. The method of claim 4, wherein And the movable pocket portion has a block shape disposed in the cutout portion of the fixed pocket portion. The method of claim 5, The printing apparatus, characterized in that the insertion groove portion for inserting the rotation shaft is partially formed on one surface of the incision portion and the movable pocket portion in contact with the rotary shaft of the gravure roll. The method of claim 6, And the insertion grooves respectively formed on the inner surfaces of the fixed pocket portion and the movable pocket portion have a semicircular shape. The gravure roll transfers any color resist selected from R, G and B color resists to the outer surface of the blanket roll printing at least one of R, G and B patterns onto the surface of the substrate. Roll drive transmission unit provided on at least one side of both sides to rotate the gravure roll; A pocket provided between the roll driving transfer unit and the gravure roll to connect the gravure roll to the roll driving transfer unit, the pocket being coupled to partially insert the rotation axis of the gravure roll; And And a position adjusting unit coupled to the pocket to adjust a relative position of the rotating shaft with respect to the pocket. The method of claim 8, The pocket, A fixed pocket part coupled to the roll driving transmission part, the rotation shaft of the gravure roll being partially disposed; A movable pocket part detachably coupled to the fixed pocket part with the rotation axis of the gravure roll interposed therebetween; And And a fastening part for fastening the movable pocket part to the fixed pocket part. The method of claim 8, The position adjusting unit is coupled to any one of the fixed pocket portion and the movable pocket portion to be movable along the radial direction of the rotary shaft, and adjusts the position of the rotary shaft positioned between the fixed pocket portion and the movable pocket portion. Printing apparatus comprising a position adjustment bolt. The method of claim 10, The position adjusting bolt is provided with the fixing pocket portion. The method of claim 11, The position adjusting bolt is a printing device, characterized in that a plurality of radially provided around the rotation axis on the fixed pocket portion.

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