KR101812369B1 - Offset printer - Google Patents

Abstract

The offset printing apparatus includes a doctor blade, a blanket roll, a plate mounting base plate, a printing plate disposed on the plate mounting base plate, and a printing platen, wherein the printing plate is inclined at a first inclination angle with respect to the printing advancing direction Wherein the doctor blade is arranged so as not to be parallel to the printing plate and the patterns are printed in parallel to the printed portion, So that the printing medium is fed in the third inclination angular direction with respect to the printing advancing direction.

Description

Offset Printing Apparatus {OFFSET PRINTER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an offset printing apparatus capable of printing fine patterns in electronic circuit wiring patterns and various semiconductor-related devices and the like with high precision.

The present application claims priority based on Japanese Patent Application No. 2011-035290 filed on February 22, 2011, the contents of which are incorporated herein by reference.

Electronic circuit wiring patterns, and various kinds of devices related to semiconductors are required to be formed with extremely high accuracy. Conventionally, such high-precision electrode patterns and the like have been formed by photolithography. However, the photolithography method has a problem in that the process is complicated, an exposure apparatus for forming a pattern is required, and the material loss is large, resulting in poor productivity and high manufacturing cost.

As another method, a screen printing method is known. According to the screen printing method, although the process can be simplified compared with the photolithography method, it is difficult to repeatedly form a fine pattern (for example, a line pattern of 30 μm or less) stably.

In view of such a problem, in recent years, the offset printing method has been used for forming fine patterns such as electrodes. The printing apparatus by the offset printing method includes a plate stage on which a printing pattern is formed, a doctor blade for supplying ink to the line portion of the plate, and a blanket roll which rotates while contacting the plate to repair the ink. The ink repaired in the blanket roll can be used to form a predetermined fine pattern on the surface of a glass substrate or the like on the printing stage (see, for example, Patent Documents 1 and 2 below).

In recent years, however, ultrafine pattern formation precision is required. Even when the above-described offset printing method is used, there is a case that the print quality is deteriorated when a pattern composed of fine pattern patterns, in particular, a combination of straight lines is formed . These problems are serious problems that can not be ignored.

Japanese Patent Application Laid-Open No. 2006-289731 Japanese Patent Application Laid-Open No. 2010-42553

In the case of the concave plate offset printing, when the doctor blade is used to scratch the ink on the plate, the cause of the deterioration of the print quality caused by the pattern of the fine pattern is that the direction in which the doctor blade is disposed and the direction When the direction of the straight line included in the pattern is matched (the lateral direction), the doctor blade may dug into the straight portion of the plate. As a result, there are many cases where the accuracy of forming a fine pattern on the surface of an object such as a glass substrate is lowered. In addition, as a cause of deterioration in the print quality seen in the entirety of the flat plate or the relief plate offset printing, when a pattern is transferred from the plate to the blanket, a linear portion formed in the lateral direction of the plate is not properly transferred to the blanket due to the stringiness . As a result, there are many cases in which print quality is deteriorated.

As a method for preventing the doctor blade from entering the pattern, the doctor blade is set at an angle to the plate (pattern), and the rectilinear portion in the lateral direction of the pattern and the doctor blade are arranged so as not to be parallel to each other, There is a way. In addition, there is a method of setting the doctor blade in parallel and setting the plate (oblique) at an angle to prevent digging into the pattern. As a countermeasure for preventing the lateral lines from being transferred beautifully due to the adhesion phenomenon when the pattern is transferred from the plate to the blanket, there is a method of preventing the ink adhesion by setting the plate at an angle.

A typical configuration example of the printing apparatus by the offset printing method in consideration of the above-described countermeasures is shown in Figs. Fig. 3A shows a plan view, Fig. 3B shows a side view, and Fig. 3C shows a film after a pattern is printed.

The outline of the printing process will be described below.

The offset printing apparatus 1 includes a carriage 10 having a doctor blade 5 and a blanket roll 15, a plate stage 20 and a printing stage 30 and also an object (here, a film 40) ]. Here, the doctor blade 5, the printing plate (plate) 60 and the printing pattern (pattern) 65 are set obliquely with respect to the printing direction indicated by an arrow, as shown in Fig. 3A.

The doctor blade 5 provided on the carriage 10 shown at the right end of the figure moves to the plate stage end 5a shown on the left side of the drawing and the ink is fed to the plate 60 set on the plate mounting base plate 25 Supply. Subsequently, the blanket roll 15 rotates on the plate 60, and the pattern of the plate 60 is transferred to the surface of the blanket roll 15.

Subsequently, the blanket roll 15 moves to the printing stage 30, moves to the position indicated by 15b while rotating on the surface of the object (here, the film 40), and transfers the transferred pattern to the film 40 ). And reference numeral 10b denotes a carriage which has moved from the right end to the left end of the printing apparatus 1. [

When the printing on the film 40 is completed in the printing stage 30, the film 40 is fed for one pitch and the film 40 is fixed at a predetermined position on the printing base 35 of the printing stage 30 , Prepare for the next printing. Hereinafter, the same process is repeated to perform printing on the film 40. Reference numerals 2 and 3 denote a base frame of the printing apparatus, reference numeral 41 denotes a printed film, and reference numerals 55 and 56 denote supply line holding rolls of the film 40. The bogie 10, the doctor blade 5, and the blanket roll 15 are provided with moving means in the horizontal direction and lifting means in the vertical direction, though not shown.

As described above, when the doctor blade 5 and the plate 60 are set obliquely and printed on the film 40 or the like, the problem of deterioration of the print quality that has occurred in the past can be solved. 3C, since the pattern 65 is obliquely printed with respect to the film 40, the length L of the film 41 at the time of cutting the printed film 41 becomes long. This causes a problem that the yield of the film 40 is deteriorated and the manufacturing cost is increased. Further, when a plurality of prints are performed on the primary printed film 41 in the previous step, there arises a problem of positional alignment with the obliquely printed primary pattern, and the productivity is deteriorated.

DISCLOSURE OF THE INVENTION The present invention is made to solve the problem of the conventional offset printing method described above, and it is an object of the present invention to provide a printing method and a printing method capable of preventing a decrease in printing accuracy, An offset printing apparatus capable of fine printing is provided.

According to one aspect of the present invention, there is provided an offset printing apparatus including a doctor blade, a blanket roll, a plate mounting base plate, a printing plate disposed on the plate mounting base plate, and a printing plate, And the doctor blade is arranged so as not to be parallel to the printing plate, and the doctor blade is arranged so as to be parallel to the printing plate, and the pattern is arranged to be inclined at a first inclination angle with respect to the printing plate, The printing medium is fed in a direction inclined at a third inclination angle with respect to the printing advancing direction.

In the offset printing apparatus of the present invention, it is preferable that the first inclination angle in the printing plate and the second inclination angle in the printing plate are the same inclination angle.

In the offset printing apparatus according to an aspect of the present invention, it is preferable that the doctor blade is disposed so as to be inclined at a fourth inclination angle with respect to the printing advancing direction.

Further, in the offset printing apparatus according to an aspect of the present invention, it is preferable that the feeding direction of the print body is a direction substantially perpendicular to the printing advancing direction.

In the offset printing apparatus according to an aspect of the present invention, it is preferable that the angle at which the doctor blade, the plate mounting base plate, and the printing platen are inclined and the angle at which the substrate is supplied are adjustable at an arbitrary angle .

In the offset printing apparatus of the present invention, since the printing plate and the printing plate are arranged at a predetermined inclination angle with respect to the printing advancing direction and the doctor blade is not parallel to the printing plate, the printing accuracy can be prevented from lowering. Further, according to the present invention, since the pattern is printed parallel to the printed portion, the length of the film when the patterns printed on the film are cut one by one can be shortened, the yield of the film can be improved, Can be reduced.

Further, according to the present invention, since the film can be supplied in a direction almost orthogonal to the printing advancing direction, it is possible to cope with various patterns of various patterns, and it is possible to constitute a device freely according to the printing process and machine arrangement before and after.

Further, according to the present invention, the angle at which the doctor blade, the printing plate, the patterns are arranged, and the angle at which the film is fed can be variably adjusted so as to be optimum for various patterns of various patterns.

Fig. 1A is a plan view showing the apparatus in the first embodiment relating to the fine pattern printing of the present invention and showing a device configuration for feeding the film obliquely with respect to the printing direction. Fig.
Fig. 1B shows a side view of the apparatus in the first embodiment relating to the fine pattern printing of the present invention.
2A is a plan view showing a device configuration in a second embodiment relating to the fine pattern printing of the present invention and showing a device configuration for supplying the film in a direction substantially orthogonal to the printing direction.
Fig. 2B shows a side view of the apparatus in the second embodiment relating to the fine pattern printing of the present invention.
2C shows a front view of the apparatus in the second embodiment relating to the fine pattern printing of the present invention.
3A is a plan view showing a conventional device relating to a fine pattern printing method which is an object of the present invention.
Fig. 3B shows a side view of a conventional apparatus relating to a fine pattern printing method to which the present invention is applied.
FIG. 3C shows a film after a pattern has been printed, in a conventional apparatus relating to a fine pattern printing method to which the present invention is applied.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a fine pattern printing apparatus according to the present invention will be described with reference to the drawings. 1A and 1B show a first embodiment of a fine pattern printing apparatus according to the present invention. Fig. 1A is a plan view and Fig. 1B is a side view, and shows a schematic configuration of the apparatus. The same members as those of the conventional offset printing apparatus 1 shown in Fig. 3 are denoted by the same reference numerals, and a description thereof will be omitted.

The fine pattern printing apparatus 100 according to the first embodiment of the present invention is an offset printing apparatus. As shown in the drawing, the doctor blade 5 is set obliquely with respect to the printing direction indicated by an arrow in plan view. The mounting angle -? Of the doctor blade 5 is an angle inclined clockwise with respect to a line orthogonal to the printing direction (fourth inclination angle). Further, the plate 60 on the plate mounting base plate 25 is also set to be oblique with respect to the printing direction when viewed from the plane (first inclination angle). More specifically, as shown in the drawing, the line orthogonal to the printing direction is inclined so as to become an inclination angle + (hereinafter referred to as?) In the counterclockwise direction. It is important that the inclination angle -a of the doctor blade 5 and the inclination angle beta of the plate 60 do not coincide with each other so that the plate 60 and the doctor blade 5 are not parallel to each other. Further, the doctor blade 5 may be suitably set in an inclination angle -?, Which is an inclination angle at which optimum ink supply can be performed.

Subsequently, the plate 60 is transferred to the blanket roll 15 in a state in which the plate 60 is inclined so as to be inclined at an angle? In the counterclockwise direction with respect to a line orthogonal to the printing direction. The blanket roll 15 is arranged to be orthogonal to the printing direction, and the moving direction of the blanket roll 15 is parallel to the printing direction indicated by the arrow. Subsequently, the blanket roll 15 moves to the printing stage 30 and prints the plate (pattern) transferred to the film 40 fixed to the printing plate 35. Here, the printing platen 35 is disposed at an angle (second inclination angle) with respect to the printing direction indicated by an arrow in the plan view. In the present embodiment, Respectively. That is, the plate 60 and the printing plate 35 are provided so as to be parallel to each other. Also, as shown in the drawing, the supplied film 40 is arranged so that the width direction of the film 40 is inclined with respect to a line orthogonal to the printing direction (third inclination angle). In this embodiment, the line orthogonal to the printing direction is inclined so as to be inclined at an inclination angle? In the counterclockwise direction, and is supplied and fixed parallel to the printing plate 35.

Thus, the print pattern 65 is printed parallel to the film 40 as shown. Therefore, when the film 41 after printing is cut one by one with the cutter 70, the film 41 can be cut parallel to the pattern end face or cut perpendicularly to the film end face. The printed pattern 65 is printed parallel to the film 40 as shown in the figure so that compared with the case where the printed pattern 65 shown in Figure 3C is obliquely printed on the film 40, The length L of the film 41 at the time of cutting can be shortened. As a result, the yield of the film 41 is improved. Here, reference numeral 55 denotes a film supply line holding roll. Reference numeral 45 denotes an object that is cut (sheet-by-sheet) into a sheet.

2A to 2C show a second embodiment of the apparatus for fine pattern printing according to the present invention. FIG. 2A is a plan view, FIG. 2B is a side view, and FIG. 2C is a front view, and shows a schematic configuration of the apparatus. The same members as those of the fine pattern printing apparatus 100 of the first embodiment shown in Fig. 1 and the conventional offset printing apparatus 1 shown in Fig. 3 are denoted by the same reference numerals, and a description thereof will be omitted.

The fine pattern printing apparatus 200 according to the second embodiment of the present invention is an offset printing apparatus similar to the fine pattern printing apparatus 100 shown in the first embodiment. In the fine pattern printing apparatus 100 shown in the first embodiment, the plate mounting base plate 25 is arranged so that the width direction is orthogonal to the printing direction indicated by the arrow when viewed in a plane (FIG. 1A). On the other hand, in the fine pattern printing apparatus 200 according to the second embodiment, the plate mounting base table 25 and the printing base plate 35 are inclined with respect to the printing direction indicated by arrows , And is inclined so as to become an inclination angle? In a counterclockwise direction with respect to a line orthogonal to the printing direction as shown in the figure. The plate 60 provided on the plate mounting base plate 25 is set at the same angle as the plate mounting base plate 25 with respect to the printing direction when seen in plan view and the plate 60 and the plate- Are arranged so as to be parallel to each other. Further, the mounting angle +? (Hereinafter referred to as?) Of the doctor blade 5 is inclined counterclockwise with respect to a line orthogonal to the printing direction. The mounting angle? Of the doctor blade 5 and the inclination angle? Of the plate 60 are different from each other and the plate 60 and the doctor blade 5 are arranged so as not to be parallel to each other.

Ink of the plate 60 which is provided on the plate 20 and which is inclined so as to have the same inclination angle beta as that of the plate 20 is transferred to the blanket roll 15 in the above- The blanket roll 15 is arranged to be orthogonal to the printing direction, and the moving direction of the blanket roll 15 is parallel to the printing direction indicated by the arrow. Subsequently, the blanket roll 15 moves to the printing stage 30 and prints on the film 40 fixed to the printing plate 35. On the other hand, the film 40 to be fed to the printing base 35 moves in a direction substantially orthogonal to the printing direction by the apparatus configuration shown in Fig. 2A. Here, the printing platen 35 is parallel to the plate 60, and is inclined so as to have an inclination angle?. Also, as shown in the drawing, the supplied film 40 is inclined so that the longitudinal direction thereof becomes an inclination angle? With respect to a line orthogonal to the printing direction, and is supplied and fixed parallel to the printing plate 35. Therefore, the print pattern 65 is printed parallel to the film 41 as shown.

Further, as compared with the first embodiment, the direction in which the print patterns 65 are arranged is different by 90 degrees. Therefore, the printed films 41 can be cut one by one parallel to the edge of the pattern or cut at right angles to the edge of the film. Further, the print pattern 65 is printed parallel to the film 40 as shown in the figure. 3C, the length L of the film 41 at the time of cutting the printed film 41 is shortened as compared with the case where the printed pattern 65 is obliquely printed on the film 40 . As a result, the yield of the film 41 is improved. Further, since the film is supplied in a direction substantially orthogonal to the printing direction, it is possible to constitute a device freely according to the printing process or machine arrangement before and after.

The apparatus configuration of the third embodiment of the present invention is similar to the apparatus configuration of the third embodiment except that the doctor blade 5, the plate mounting base plate 25, the printing plate 60, the printing platen 35, -Α, β and γ can be adjusted variably. By having such an apparatus configuration, it is possible to select an optimum printing condition with good print quality at all times for various patterns of various patterns. It is also optimal that the inclination angles -?,? And? Can be variably adjusted in the range of 5 degrees to 45 degrees depending on the pattern. In use, the doctor blade (5) and the printing plate (60) are arranged so as not to be parallel to each other. Further, the blanket roll 15 and the printing plate 60 are arranged so as not to be parallel to each other. Further, the printing plate 60 and the printing plate 35 are arranged so as to be parallel to each other. Further, the supply angle of the film 40 is set to be the same as the inclination angle of the printing plate 60 or at an inclination angle that is orthogonal to the inclination angle. With such a configuration, it is possible to perform fine printing at low cost and at a low cost without deteriorating the printing accuracy and without lowering the productivity.

INDUSTRIAL APPLICABILITY The present invention can be suitably applied to an offset printing apparatus capable of printing fine patterns in electronic circuit wiring patterns and various semiconductor devices and the like with high accuracy.

1: Offset printing device
2: the base frame of the printing apparatus
3: the base frame of the printing apparatus
5: Doctor blade
10: Bogies
15: blanket roll
20: plate stage
25: Plate mounting plate
30: Printing stage
35: printing plate
40: Film before printing
41: Printed film
45: Printed cut sheet
55: Film transfer line holding roll
56: Film transfer line holding roll
60: Edition (printed version)
65: Printed pattern
70: film cutter
100: offset printing device
200: Offset printing device
α, β, γ: Tilt angle

Claims (9)

As an offset printing apparatus,
With Dr. Blade,
A blanket roll,
A plate mounting base plate,
A printing plate disposed on the plate mounting base plate,
Comprising a printing platen,
Wherein the printing plate is disposed so as to be inclined at a first inclination angle with respect to the printing advancing direction and the printing platen is inclined so as to be at a second inclination angle with respect to the printing advancing direction and that the doctor blade is not parallel to the printing plate And the print is fed in a direction inclined at a third inclination angle with respect to the printing advancing direction so that the pattern is printed parallel to the printed portion. The method according to claim 1,
Wherein the first inclination angle of the printing plate and the second inclination angle of the printing plate are the same inclination angle. 3. The method according to claim 1 or 2,
Wherein the doctor blade is disposed so as to be inclined at a fourth inclination angle with respect to the printing advancing direction. 3. The method according to claim 1 or 2,
Wherein the feeding direction of the print body is a direction orthogonal to the printing advancing direction. The method of claim 3,
Wherein the feeding direction of the print body is a direction orthogonal to the printing advancing direction. 3. The method according to claim 1 or 2,
Wherein an angle at which the doctor blade, the plate-mounting base plate, and the printing platen are inclined and an angle at which the print substrate is fed are adjustable at an arbitrary angle, respectively. The method of claim 3,
Wherein an angle at which the doctor blade, the plate-mounting base plate, and the printing platen are inclined and an angle at which the print substrate is fed are adjustable at an arbitrary angle, respectively. 5. The method of claim 4,
Wherein an angle at which the doctor blade, the plate-mounting base plate, and the printing platen are inclined and an angle at which the print substrate is fed are adjustable at an arbitrary angle, respectively. 6. The method of claim 5,
Wherein an angle at which the doctor blade, the plate-mounting base plate, and the printing platen are inclined and an angle at which the print substrate is fed are adjustable at an arbitrary angle, respectively.

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