KR100976359B1 - pattern design method for gravure print - Google Patents

Abstract

The present invention relates to a design method of a gravure printing pattern that can improve the print quality by designing a pattern suitable for gravure electronic ink (Electronic inc). The present invention is to change the format (format) of the pattern drawing to work with CAD provided from the orderer, such as the electronic company to the image file (image file) to design the pattern image file by leveling work and laser Forming a pattern on the outer circumferential surface of the gravure roll through the exposure machine, etching and chromium plating has the advantage that the spacing between the cells and the wall partitioning the cells are uniform. In particular, when printing with electronic ink using gravure rolls made using pattern image files designed through leveling work, it is possible to improve the print quality by realizing cell shape perfectly, and it is applied to precision industrial fields such as electronic industry. It also has the advantage of being able to produce stable electronic components.

Gravure, Ink, Pattern

Description

{Pattern design method for gravure print}

The present invention relates to a method for designing a pattern for gravure printing, and more particularly, to a method for designing a pattern for gravure printing that can improve print quality by designing a pattern suitable for gravure electronic ink (Electronic inc).

In general, in order to manufacture a multilayer ceramic electronic component such as a multilayer ceramic capacitor, a process of forming a conductive paste film as an internal electrode on a ceramic green sheet is performed. The internal electrode provided by such a conductive paste film has high pattern accuracy. Must have In order to have such a high precision of such a pattern, gravure printing using electronic ink has recently been attracting attention.

Such gravure printing is used in various electronic parts in addition to the multilayer ceramic electronic parts. Such gravure printing uses a gravure printing machine as shown in FIG. 1. It consists of the gravure roll 10 and the press roll 20 which presses the sheet | seat 1 by which printing is performed to the gravure roll 10. As shown in FIG.

Accordingly, the gravure roll 10 and the pressure roll 20 are rotated, and the sheet 1 is transferred. At this time, the lower part of the gravure roll 10 is formed on the pattern 12 formed on the circumferential surface of the gravure roll 10. Ink is printed on the sheet 1 while the ink 32 of the ink tray 30 provided in the ink tray 30 is rotated in the pattern 12.

On the other hand, the gravure roll 10 is immersed in the electronic ink 32 accommodated in the ink tray 30 while igniting the electron ink 32 is applied to a plurality of patterns 12 formed on the circumferential surface of the gravure roll 10 In particular, the extra electron ink 32 on the circumferential surface of the gravure roll 10 is scraped off by a doctor blade 40.

The gravure printing method is a print quality depends on the precision of the pattern 12 of the gravure roll 10, the pattern 12 of the gravure roll 10 is the pattern pattern of the gravure roll (10) It is provided in the state of CAD etc. from the back, etc., and it is exposed to the surface of the gravure roll 10 using a laser exposure machine and then etched to form a semi-processed pattern and to prevent chromium for corrosion prevention. By performing the plating, a plurality of patterns 12 are formed on the outer circumferential surface of the gravure roll 10.

By the way, the laser exposure machine is provided with a control board equipped with an image processor called a rip (Rip; Raster Image Process) and converts the point or vector file into an image and outputs it. Done.

By the way, when directly outputting such CAD data is output to the screen from the lip (Rip), which is cracked phenomenon occurs at the end portion 13 of the pattern 12 is output in a multi-stage replication as shown in FIG. In addition, the plurality of cells 12a constituting the pattern 12 have a problem that the size of the shape is not output uniformly, which is unsuitable for high-viscosity electronic ink.

In particular, since metallic inks such as electronic ink are very fine in printing and small errors are not allowed, a wall 12b for partitioning the cells 12a and the interval between the correct cells 12a should be implemented. As shown in FIG. 4, according to the conventional screen selection output method, not only the size and shape of the cells 12a are unstable, but also the thickness of the wall 12b is unstable, which has a very disadvantageous effect on the electronic ink.

As such, when printing with electronic ink using the gravure roll 10 having the pattern 12 formed on the lip screen method, the surface of the pattern is formed as shown in FIG. This non-uniformity causes not only the conductivity to be lowered, but also the current (current) also flows unstable, causing a problem of deteriorating the quality of the electronic component to be manufactured later.

Therefore, to solve this problem, an object of the present invention is to design a pattern formed on the outer circumferential surface of the gravure roll in a new way to uniformly design the size and shape of the cells constituting the pattern and the wall partitioning the cells The present invention provides a method for designing a pattern for gravure printing to form a pattern of gravure roll having a structure suitable for an electronic ink.

The present invention to achieve this object;

A format changing process of changing a format of a pattern drawing of a gravure roll outer circumferential surface into an image file; and a cell constituting a pattern on an image by loading the image file with the changed format into a graphic program; It provides a design method for a gravure printing pattern comprising a; leveling process for uniformly designing the size and shape of the partitioning wall to create a pattern image file.

At this time, the graphic program is a Photoshop illustration program running on a Macintosh computer, and the image file is changed to 12800 dpi by loading the image file whose format is changed in the Photoshop or illustration program to design a bitmap image. It is characterized by.

According to the present invention to change the format of the pattern drawing to the image file (image file) provided by the orderer (for example, the electronic company), and to design the pattern image file by leveling When the pattern is formed on the outer circumferential surface of the gravure roll through laser exposure, etching and chromium plating in the future, there is an advantage that the spacing between the cells and the wall partitioning the cells are uniform.

In particular, when printing with electronic ink using gravure rolls made using pattern image files designed through leveling work, it is possible to improve the print quality by realizing cell shape perfectly, and it is applied to precision industrial fields such as electronic industry. It also has the advantage of being able to produce stable electronic components.

With reference to the accompanying drawings, a design method of a gravure printing pattern according to the present invention will be understood by the embodiments described in detail below.

6 is an enlarged view of a pattern image file for gravure printing according to the present invention, FIG. 7 is an enlarged view of a portion of the pattern of FIG. 6, and FIG. 8 is another view of a pattern image file for gravure printing according to the present invention. 9 is an enlarged view of an embodiment, and FIG. 9 is an enlarged view of another embodiment of a gravure printing pattern image file according to the present invention, and FIG. 10 is an enlarged view of a printing surface due to gravure printing according to the present invention. One drawing.

Hereinafter, the design process of the gravure printing pattern according to the present invention will be described in detail with reference to FIGS. 5 to 10.

<Change drawing format>

First, the format of a pattern drawing to be worked on CAD provided from an orderer (for example, an electronic company) is converted into an image file.

Such image files are preferably bitmap images that are compatible with each other on an IBM PC or a Macintosh computer.

<Leveling process>

The image file provides a high-resolution working environment, and the image file is loaded using a computer and the pattern 100 on the loaded image is designed using the image file.

In this case, the size and shape of the cell 110 constituting the pattern on the loaded image and the wall 120 partitioning the cell 110 may be uniformly designed.

In this case, it is preferable that the computer uses a Macintosh having excellent graphic work performance.

In addition, in order to load the image file, a graphic program such as Photoshop or an illustration program is used.

In this case, when using the Photoshop and the illustration program, it works with a bitmap image and works with the resolution set to 12800 dpi.

Through the leveling operation, the cell 110 and the wall 120 dividing the cell 110 are designed, and the cell 110 has a width of about 60 to 80 μm in width and length, and the wall ( 120) is preferably formed about 1 ~ 5㎛.

Meanwhile, the shape of the cell 110 may be formed as a hexagon as shown in FIG. 7, or may be formed as a quadrangle as shown in FIG. 8, or may be formed as a rhombus as shown in FIG. 9. .

When the pattern image file of the pattern design process is finished, the laser imager outputs the pattern image file as it is on the screen and exposes the outer circumferential surface of the gravure roll.

After the exposure operation is completed using a laser exposure machine, the wafer is etched (corroded) to form a pattern so that a semi-processed pattern is formed, and chromium plating is formed to prevent surface erosion of the gravure roll through chromium plating.

At this time, the surface of the gravure roll using a copper foil is attached to the state and it is natural to form a pattern by etching the surface of such a copper foil.

In the case of forming a pattern on the surface of the gravure roll through this process, the spacing between the cells and the walls partitioning the cells are uniform and fine, and are very suitable for metallic inks such as electronic ink, which does not allow small errors.

In particular, it is possible to improve the print quality by implementing the cell shape perfectly through the cell designed as in the present invention, the conductivity of the printed surface 100a is reduced due to the uniformity of the pattern as shown in FIG. As a result, it is possible to produce stable electronic components when applied to the electronic industry. Therefore, many electronic components such as AM OLED, LCD reflective sheet, PCB, RFID, E-PAPER, EMI, etc. can reduce the production cost by using electronic ink and have excellent productivity.

As described above, the embodiments of the present invention have been described in detail, but the scope of the present invention is not limited thereto, and the scope of the present invention extends to the range substantially equivalent to the embodiment of the present invention.

1 is a conceptual diagram illustrating a general gravure printing process.

2 is an enlarged view of a portion of an outer surface of a general gravure printing roll.

3 is an enlarged view of the pattern of FIG. 2.

4 is an enlarged view of another example of the pattern of FIG. 2.

5 is an enlarged view of a printing surface due to general gravure printing.

Figure 6 is an enlarged view showing a pattern image file for gravure printing according to the present invention.

FIG. 7 is an enlarged view of a portion of the pattern of FIG. 6.

8 is an enlarged view of another embodiment of a pattern image file for gravure printing according to the present invention.

9 is an enlarged view of another embodiment of a pattern image file for gravure printing according to the present invention.

10 is an enlarged view of a printing surface due to gravure printing according to the present invention.

*** Explanation of symbols for main parts of drawing ***

10: Gravure Roll 100: Pattern

110: cell 120: wall

Claims (2)

A format changing process of changing the format of the pattern drawing of the gravure roll outer circumferential surface into an image file; A leveling process of loading the image file having the changed format onto a graphic program to uniformly design the size and shape of a cell constituting a pattern on the image and a wall partitioning the cell to generate a pattern image file; Design method of the gravure printing pattern, characterized in that consisting of. The method of claim 1, The graphic program is a Photoshop illustration program that runs on a Macintosh computer, and the image or image program whose format is changed in the Photoshop or illustration program is designed as a bitmap image with the resolution set to 12800 dpi. Method of pattern for gravure printing.

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