KR101410690B1 - Printing apparatus - Google Patents

Abstract

The printing apparatus according to the present invention is for forming a print on a target object to be driven. The printing apparatus supplies printing material to a pattern to be printed, which is provided in an endlessly rotated printing unit, and transfers the printing material to a target. According to this configuration, by forming the printing on the object with the printing agent supplied to the pattern of the printing unit, high-quality printing can be achieved as the pattern and the printing agent coincide with each other, and precision printing becomes easy.

Description

[0001] PRINTING APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a printing apparatus, and more particularly, to a printing apparatus capable of high-precision and high-quality printing.

A printing method such as roll printing is applied to parts of an electronic device such as a liquid crystal display (LCD), a touch panel, and an RFID (Radio Frequency Identification). In the roll printing, a specific pattern is transferred to a target object such as a film to be printed, and then the pattern transferred to the target object is printed by supplying the printing material.

However, in the case of the roll printing as described above, a pattern defect is caused in which the pattern of the object and the application of the printing agent do not coincide with each other as the printing agent is applied after forming the pattern on the object. Such pattern defects are disadvantageous for various printing as they impair precise printing such as a line spaced at fine intervals. Accordingly, in recent years, research and development that can improve a specific pattern print quality for a target object have been continuously performed.

Korean Patent Publication No. 10-2000-51026 Korean Patent Laid-Open Publication No. 10-2001-28424 Korean Patent Laid-Open Publication No. 10-2007-79817

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a printing apparatus which can easily perform precision printing and improve printing quality.

In order to achieve the above object, a printing apparatus according to the present invention is for printing a target object to be driven, and supplies a printing material to a pattern to be printed,

According to one aspect of the present invention, there is provided a printing apparatus comprising: a supply unit for supplying a printing agent for forming the printing to the printing unit; and a pressing unit for pressing at least one of the printing unit and the object to another, And a pressure unit for printing on the printing unit.

According to one aspect, the printing unit includes a printing member on which the pattern is formed, and at least one supporting roller for rotatably supporting the printing member in an infinite orbit.

According to one aspect, the supply unit includes a supply source for supplying the printing material to the printing unit and a regulating member for regulating the amount of the printing material supplied to the printing unit.

According to one aspect of the present invention, the pressure unit includes: a first pressure roller that rotatably supports the printing unit and presses the printing unit onto the object; and a second pressing roller that faces the first pressure roller and the printing unit, And a second pressure roller for supporting the printing unit while supporting the printing unit.

A printing apparatus for printing a running target object according to a preferred embodiment of the present invention includes a printing unit including a printing member supported by a plurality of supporting rollers and rotated in an endless track, And a printing agent is supplied to the pattern to print the object.

According to one aspect of the present invention, there is provided a printing apparatus comprising: a supply unit for supplying a printing agent for forming the printing with the pattern of the printing member and regulating the amount of the printing agent supplied to the printing member; And a pressing unit which presses one of the plurality of printing materials to the other to print the pattern on the object in a state in which the printing material is supplied.

The printing apparatus according to the present invention having the above-described configuration is characterized in that first, by printing a target object in a state in which the printing material is supplied on a pattern provided in the printing unit, the printing position of the printing material on the pattern coincides with each other, .

Second, it is advantageous for fine printing spaced apart at mutually minute intervals, and printing precision can be improved.

Thirdly, since the regulating member for regulating the amount of the printing agent is provided so as to face the printing unit, it is also possible to prevent the pattern defect due to the excessive supply of the printing agent.

Fourth, by printing a target object using a printing unit of an infinite orbit, it is possible to perform wide printing with shortening of printing time.

Fifth, when various types of printing units corresponding to a desired pattern are provided, various patterns can be printed, and if the printing quality is changed, they can be immediately exchanged and coped with.

1 is a sectional view schematically showing a printing apparatus according to a preferred embodiment of the present invention,
Fig. 2 is a cross-sectional view schematically showing the region II of Fig. 1 to explain a feeding operation of the feeding unit of the printing apparatus,
Fig. 3 is a cross-sectional view schematically showing the region III shown in Fig. 1 in order to explain the printed state on the object.

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

Referring to Fig. 1, a printing apparatus 1 according to a preferred embodiment of the present invention includes a printing unit 10, a feeding unit 20, and a pressing unit 30.

For reference, the printing apparatus 1 described in the present invention can be applied not only to optical sheets to be provided in a light source of a liquid crystal display, but also to a touch panel, a Radio Frequency Identification (RFID), a flat display, an FPCB (FLEXIBLE PCB) And solar cells.

The printing unit 10 prints a pattern corresponding to the pattern P (see FIG. 3) on the object O to be printed to be driven. To this end, the printing unit 10 includes a printing member 11 having an endless rotation with a pattern P and at least one supporting roller 12 for rotatably supporting the printing member 11 . In the present embodiment, a plurality of the support rollers 12 are provided, and the printing member 11 is exemplified as being wound around a plurality of support rollers 12 such as a kind of conveyor and rotating endlessly.

However, it is a matter of course that the printing member 11 can be variously deformed such as a mold, a flat plate or a roll in which the pattern P is formed. In addition, the printing member 11 may be made of either a flexible or rigid material. That is, the shape and configuration of the printing member 11 are not limited to the illustrated examples.

For reference, the object O is a polymer such as polyethylene terephthalate (PET), polycarbonate (PC), polyimide (PI), polyethylene naphthalate (PEN), cycloolefin copolymer (COC) It may be the same material. If the object O is a polymer material as described above, the object 0 may be a transparent material and may be applied to a display panel, a touch screen, or the like.

As shown in the enlarged view of FIG. 1, the pattern P has alternately repeatedly formed concave portions P1 and convex portions P2, and has a serrated shape of a positive angle. The pattern P may be integrally formed on the outer surface of the printing member 11. For reference, it is a matter of course that the pattern P has a saw-tooth shape, and the shape, the repetition interval, and the number of repetitions are not limited to those shown in FIG.

The supply unit 20 supplies the printing material F to the object O. [ To this end, the supply unit 20 includes a supply source 21 and a regulating member 22.

The supply source 21 supplies the printing agent F as shown in Fig. It is preferable that the printing agent F supplied from the supply source 21 is supplied only to the convex portion P2 which is relatively protruded by the rotational speed of the printing member 11. [ Here, the printing agent (F) includes an ink containing an electronic ink (Elelctronic Ink). For reference, the electronic ink included in the printing agent (F) collectively refers to an electronic industrial ink applicable to electronic parts such as a printed circuit board, a display unit, an RFID (Radio Frequency Identification), a smart label and the like.

The regulating member 22 regulates the amount of the printing agent F supplied to the printing member 11 of the printing unit 10 as shown in Fig. To this end, the regulating member 22 includes a blade such as a doctor knife installed so as to face the printing member 11, so that the surface of the printing member 11, that is, the pattern P Regulates the amount of the printing agent (F) supplied. By further including the regulating member 22 in this way, it is possible to prevent the pattern defect due to the excessive supply of the printing agent (F).

The pressing unit 30 presses the printing unit 10 to the object O to form the pattern P on the object O in a state in which the printing material F is supplied. For this purpose, the pressurizing unit 30 includes first and second pressure rollers 31 and 32.

The first pressing roller 31 presses the object O while supporting the printing member 11 in a rotatable manner. That is, the printing member 11 is wound on the first pressing roller 31 and rotated, and the printing member 11 on which the first pressing roller 31 is wound is pressed toward the object O side. 1, the number of the first pressing rollers 31 can be changed under the condition that the uniform pressing force is ensured.

The second pressing roller 32 faces the printing member 11 and presses the printing member 11 while rotatably supporting the object O. [ 3, the first pressing roller 31 is provided as a pair and is pressed by the printing member 11 while supporting the object O in a rotatable manner. However, it is needless to say that the second pressing roller 32 may be constituted by a single number or a plurality of.

The printing operation of the printing apparatus 1 according to the embodiment of the present invention having the above-described structure will be described with reference to Fig.

1 and 2, when the printing member 11 of the printing unit 10 is rotated in an endless track by the supporting roller 12, the printing material F is supplied to the printing member 11 side . At this time, the amount of the printing agent F supplied from the supply source 21 of the supply unit 20 to the printing member 11 is regulated by the regulating member 22. The printing material F is supplied to the pattern P provided on the printing member 11 so that the printing material F is printed on the convex portion P2 which is relatively protruded as shown in Fig. (F) is applied.

The printing member 11 continuously rotates and enters the space between the first and second pressing rollers 31 and 32 of the pressing unit 30 and at the same time the object O is pressed against the first and second pressing rollers 32 ). The printing agent F applied to the pattern P of the printing member 11 is transferred to the object O so that the printing pattern corresponding to the pattern P is finally printed on the object O. [

As described above, by supplying the printing material F to the pattern P of the printing member 11 and transferring the printing material F to the object O to perform printing, pattern printing can be performed even with a line width thinner than the point, It is advantageous. In addition, since the object O is printed by the printing member 11 in the infinite orbit, the printing time can be shortened and the width of the printing member 11 can be adjusted, Coating or printing. In addition, it is possible to print various patterns by using a plurality of printing members 11 having a desired pattern P, rather than regular printing such as conventional gravure printing, and cope with the change in printing quality flexibly.

Although the present invention has been described with reference to the preferred embodiments thereof, 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 and scope of the invention as defined in the following claims. It can be understood that

1: printing apparatus 10: printing unit
11: printing member 20: supply unit
30: pressure unit P: pattern
O: object F: printing agent

Claims (7)

1. A printing apparatus for printing a target object to be driven,
A printing member having a convex portion and a concave portion formed on the outer surface and having a printing pattern formed thereon;
A supply source for applying and supplying a printing agent onto the convex portion of the printing member;
A regulating member which is supplied from the supply source and removes a part of the printing agent so as to control the height of the printing agent applied to the convex portion; And
A pressing unit for pressing at least one of the printing member and the object to another to print the printing pattern on the object in a state in which the printing agent is supplied;
. delete The method according to claim 1,
At least one support roller for rotatably supporting the printing member in an endless track;
Further comprising: The method according to claim 1,
Wherein the regulating member includes a blade arranged to face the printing member to remove a printing agent excessively supplied onto the convex portion. The method according to claim 1,
The pressure unit includes:
A first pressing roller that rotatably supports the printing member while pressing the printing member to the object; And
A second pressure roller facing the first pressure roller and the printing member and pressing the printing medium with the printing member while rotatably supporting the object;
. delete delete

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