KR20180114635A - Printing Method using Printing Apparatus with Inkjet Head Unit - Google Patents

Abstract

The present invention relates to a printing method for using a printing apparatus having an inkjet head unit capable of remarkably reducing mistakes in editing. According to embodiments of the present invention the printing method comprises: loading a CAD drawing embedded in a printing apparatus onto a screen of the printing apparatus; editing the CAD drawing on the screen of the printing apparatus; and printing a pattern on a substrate by using the inkjet head unit based on the edited CAD drawing.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing method using a printing apparatus having an inkjet head unit,

The present invention relates to a printing method using a printing apparatus having an inkjet head unit. And more particularly to a printing method using a printing apparatus having an ink jet head unit capable of more easily correcting a pattern to be printed on a substrate.

In the manufacture of flat panel display devices and the like, a printing apparatus having an ink jet head unit formed of an ink jet head is used. In recent years, flat panel display devices for use in mobile phones and the like have demanded irregular and complex shapes such as curved surfaces. In particular, the more complicated the shape, the more errors such as filling the droplet or filling the droplet are generated in the actual printed pattern than the design pattern.

Here, a CAD tool such as Auto CAD is used for the correction of the design pattern due to the generation of the design pattern and the error between the design pattern and the actual printed pattern.

However, the CAD tool mentioned is complicated to perform simple modifications. In addition, when the CAD tool is used for the fine adjustment of the micrometer (쨉 m) in recent years, it is difficult to manage the history of the correction because the operator's mistake and adjustment difference for each operator may occur.

The CAD tool mentioned above is configured to modify the CAD drawing at a place other than the printing apparatus and to input it into the printing apparatus, and after confirming the printing result, the CAD tool is again modified by using the CAD tool and inputted to the printing apparatus Therefore, it takes a long time to work.

An object of the present invention is to provide a printing apparatus having an ink jet head unit capable of significantly reducing a mistake in editing because a CAD drawing can be directly edited in a printing apparatus and a drawing designated in editing a CAD drawing is used And to provide a printing method to be used.

According to another aspect of the present invention, there is provided a printing method using a printing apparatus including an inkjet head unit, the method comprising: bringing a CAD drawing embedded in the printing apparatus into a screen of the printing apparatus; It is possible to edit the CAD drawing on the screen of the printing apparatus and then print the pattern on the substrate using the inkjet head unit based on the edited CAD drawing.

In exemplary embodiments, the CAD drawing embedded in the printing apparatus may include a plurality of designated drawings, and one of the plurality of designated drawings may be called up as a screen of the printing apparatus, Editing the CAD drawing may use an icon displayed on the screen of the printing apparatus.

In exemplary embodiments, the printing of the pattern on the substrate may include converting the edited CAD drawing into a print image, transmitting the print image to a driver, And transferring the droplet to the head unit, and discharging droplets onto the substrate according to the waveform to form a pattern.

In the exemplary embodiments, it is confirmed whether or not the pattern printed on the substrate matches the edited CAD drawing, and if the pattern matches, the edited CAD drawing is embedded in the printing apparatus so as to be registered as a recipe And if the check result does not match, the edited CAD drawing can be modified on the screen of the printing apparatus.

A printing method using a printing apparatus having an ink jet head unit according to exemplary embodiments can use a CAD drawing including a plurality of designated drawings embedded in a printing apparatus.

Therefore, since the CAD drawing can be directly edited in the printing apparatus, the time required for the printing process can be significantly reduced compared to editing the CAD drawing in a separate place.

In addition, by using the designated drawing at the time of editing the CAD drawing, it is possible to significantly reduce the mistake in editing the CAD drawing compared to using the CAD tool, so that it can be positively utilized in a printing process having a more complicated shape.

However, the effects of the present invention are not limited to the above-mentioned effects, and may be variously expanded without departing from the spirit and scope of the present invention.

1 is a process diagram for explaining a printing method using a printing apparatus having an ink jet head according to exemplary embodiments.
Fig. 2 is a view schematically showing a screen of a printing apparatus for loading the CAD drawing in Fig. 1. Fig.
Fig. 3 is a process diagram for explaining a step of printing a pattern on the substrate in Fig. 1. Fig.
4 is an enlarged view of a portion A in Fig.

While the present invention has been described in connection with certain exemplary embodiments, it is obvious to those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term "comprises" or "comprising ", etc. is intended to specify that there is a stated feature, figure, step, operation, component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

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

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

First, a printing apparatus having an ink jet head unit for implementing a printing method according to exemplary embodiments can be applied to pattern formation such as formation of a thin film, formation of a desired image, and the like in manufacturing a flat panel display.

In particular, the above-mentioned printing apparatus can be applied to a printing process of a flat display apparatus having an irregular shape capable of manufacturing a mobile phone, a smart watch and the like having various curved surface structures.

The above-mentioned printing apparatus may have an ink jet head for ejecting droplets onto a substrate by an inkjet method. A plurality of nozzles for ejecting liquid droplets may be arranged in the ink jet head. The plurality of nozzles arranged in the ink jet head may be mainly 128 or 256, and may be arranged in a line at intervals of a predetermined pitch.

In addition, the number of the piezoelectric elements corresponding to the nozzles may be provided in the nozzles. And droplets can be ejected onto the substrate through the nozzles by the operation of the piezoelectric element. That is, 128 piezoelectric elements are provided when 128 nozzles are provided, and 256 piezoelectric elements are provided when 256 nozzles are provided.

In addition, the discharge amount of droplets discharged from the nozzles can be independently controlled by controlling the voltage applied to the piezoelectric elements. And the voltage applied to the piezoelectric elements can be controlled by the waveform, that is, the frequency, transmitted from the driver. The printing apparatus mentioned above is capable of printing a desired pattern by controlling a voltage applied to each of the piezoelectric elements using a driver.

In addition, the above-mentioned printing apparatus may include an inkjet head unit having a plurality of inkjet heads.

Hereinafter, a printing method using a printing apparatus having an ink jet head unit according to exemplary embodiments will be described.

1 is a process diagram for explaining a printing method using a printing apparatus having an ink jet head according to exemplary embodiments.

Referring to FIG. 1, the printing apparatus may be provided to embed a CAD drawing. In particular, the CAD drawing embedded in the printing apparatus may include a plurality of designated drawings. That is, the CAD drawing embedded in the printing apparatus is not created and modified directly by the operator using the CAD tool, but is a pre-created drawing. In particular, the CAD drawing embedded in the printing apparatus may include drawings having a non-regular shape capable of manufacturing a cellular phone, smart watch, etc. having various curved structures.

Accordingly, in the printing method according to the exemplary embodiments, the CAD drawing in which the operator for performing the printing process using the printing apparatus is embedded in the printing apparatus can be called up on the screen of the printing apparatus (Step S11). In other words, One CAD drawing for forming a pattern to be worked out is called from the CAD drawing embedded in the printing apparatus. In particular, since the CAD drawing itself can be built in, a plurality of drawings having an irregular shape capable of manufacturing a mobile phone, smart watch, etc. having various curved surface structures may be included.

Fig. 2 is a view schematically showing a screen of a printing apparatus for loading the CAD drawing in Fig. 1. Fig.

Referring to FIG. 2, a CAD drawing drawn by the operator on the screen 20 of the printing apparatus is displayed, and a CAD drawing can be displayed mainly on the lower end 22 of the screen and icons for editing are displayed on the upper screen 24 Can be. The screen configuration mentioned above represents one example, and besides the screen configuration mentioned above, it can be edited to have various configurations.

Referring again to FIG. 1, as described in the printing method according to the exemplary embodiments, after the CAD drawing embedded in the printing apparatus is loaded on the screen of the printing apparatus, the operator edits the CAD drawing on the screen of the printing apparatus (Step S13)

Particularly, when the screen of the printing apparatus is a touch screen, the operator can edit the CAD drawing directly on the screen of the printing apparatus. 2, the operator can edit the CAD pattern so as to form a desired pattern using the icons displayed on the screen of the printing apparatus.

In the editing of the CAD pattern mentioned above, a method of converting a plurality of elements such as line segments, arcs, polylines, etc. constituting a free figure to a spline curve is used. That is, editing of the CAD drawing can be achieved by applying a spline curve that can create a smooth curve with two or more control points. In particular, in the printing method according to the exemplary embodiments, the more the number of control points, the more smoothly the curve can be edited.

Since two or more control points can be represented by separate polynomials for each section, changing the control points does not affect the entire curve. Therefore, the printing method according to the exemplary embodiments can edit the CAD drawing more easily.

 In the printing method according to the exemplary embodiments, the CAD drawing is edited on the screen of the printing apparatus, and the pattern is printed on the substrate using the ink jet head unit based on the edited CAD drawing. (S15 step)

Hereinafter, a method of printing a pattern on a substrate using the inkjet head unit based on the edited CAD drawing will be described.

Fig. 3 is a process diagram for explaining a step of printing a pattern on the substrate in Fig. 1. Fig.

Referring to FIG. 3, the edited CAD drawing is converted into a printing image (step S31). That is, the edited CAD drawing is converted into a print image that can be recognized by the printing apparatus.

Subsequently, the print image is transmitted to the driver, and a waveform for the print image is transmitted to the inkjet head unit using the driver (steps S33 and S35). That is, Thereby controlling the applied voltage.

In addition, it is possible to form a pattern by ejecting droplets onto the substrate according to a waveform transmitted to the inkjet head unit (step S37). That is, by controlling the voltage applied to each of the piezoelectric elements provided in the ink- The pattern can be formed on the substrate in accordance with the droplet discharge through the nozzle driven by the voltage applied to the device.

Thus, in exemplary embodiments, the edited CAD drawing is converted into a print image, the print image is transmitted to the driver, a waveform for the print image is transmitted to the inkjet head unit using a driver, The pattern can be printed on the substrate by ejecting droplets onto the substrate to form a pattern.

Referring again to FIG. 1, it is possible to confirm whether the pattern printed on the substrate matches the edited CAD drawing after printing the pattern on the substrate as mentioned above (step S17). That is, as shown in the edited CAD drawing It is confirmed whether or not the droplet is correctly ejected to the printing region of the substrate.

If a match is found, the edited CAD drawing is registered as a recipe in the printing apparatus. (Step S19) As described above, the CAD drawing registered as a recipe is also embedded in the printing apparatus, One more CAD drawing that can be called is added.

Therefore, the printing method according to the exemplary embodiments may have a recent machine learning configuration because it can continuously add the CAD drawing to the recipe. Accordingly, the printing method according to the exemplary embodiments may be more positively applied to a printing process having an irregular shape capable of manufacturing a mobile phone, smart watch, etc. having various curved structures.

As a result of checking whether or not they match, it is possible to modify the edited CAD drawing on the screen of the printing apparatus. In other words, the process returns to step S11 in FIG. 1 to perform an edit operation for correcting the CAD drawing.

Particularly, FIG. 4 is an enlarged view of a portion A in FIG. 2, and it is possible to perform a correction operation such as adjusting a width in a curved surface as shown in FIG.

Since the correction operation on the CAD drawing is also the editing of the CAD drawing, the steps S11 to S15 are performed, and then the step S17 is performed so that the pattern printed on the substrate again is corrected, that is, And the registered CAD drawing can be registered as a recipe or can be modified again according to whether or not the result is confirmed.

As described above, in the printing method according to the exemplary embodiments, a CAD drawing including a plurality of designated drawings embedded in the printing apparatus can be used.

Therefore, the printing method using the printing apparatus having the ink-jet head unit according to the exemplary embodiments can edit the CAD drawing directly from the printing apparatus, so that the time required for the printing process Can be remarkably reduced, and as a result, productivity can be expected to be improved.

In addition, by using the designated drawing at the time of editing the CAD drawing, it is possible to significantly reduce the mistake in editing the CAD drawing compared with the use of the CAD tool, so that it can be positively utilized in the printing process having a more complicated shape, The reliability of the printing process can be expected to be improved.

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

20: Screen of printing device
22: Bottom of the screen of the printing apparatus
24: Top of screen of printing device

Claims (4)

A printing method using a printing apparatus having an inkjet head unit,
Loading a CAD drawing embedded in the printing apparatus into a screen of the printing apparatus;
Editing the CAD drawing on a screen of the printing apparatus; And
And printing the pattern on the substrate using the inkjet head unit based on the edited CAD drawing. The method according to claim 1,
The CAD drawing embedded in the printing apparatus includes a plurality of designated drawings,
Wherein a screen of the printing apparatus is loaded with one of the plurality of designated drawings,
Wherein the editing of the CAD drawing uses an icon displayed on the screen of the printing apparatus. 2. The method of claim 1, wherein printing the pattern on the substrate comprises:
Converting the edited CAD drawing into a print image;
Transmitting the print image to a driver;
Transmitting a waveform for the print image to the inkjet head unit using the driver; And
And ejecting droplets onto the substrate in accordance with the waveform to form a pattern. The printing method using the printing apparatus according to claim 1, The method according to claim 1,
Confirming that the pattern printed on the substrate matches the edited CAD drawing; And
And a step of, if the check result matches, inserting the edited CAD drawing into the printing apparatus so that the edited CAD drawing is registered as a recipe, and modifying the edited CAD drawing on the screen of the printing apparatus if the confirmation result does not match Wherein the inkjet head unit comprises a plurality of inkjet heads.

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