JP7491055B2 - Gravure printing method, gravure printing machine, and method for manufacturing multilayer ceramic electronic components - Google Patents

Description

The present invention particularly relates to a gravure printing method and gravure printing machine for printing conductive paste onto a dielectric sheet, and a method for manufacturing multilayer ceramic electronic components.

As electronic devices such as mobile phones and digital devices become smaller and more powerful, there is a demand for electronic components, including multilayer ceramic capacitors, to be smaller and have higher capacity. Multilayer ceramic capacitors have a structure in which multiple dielectric layers and multiple internal electrode layers are alternately stacked, and by making these dielectric layers and internal electrode layers thinner, it is possible to achieve smaller size and higher capacity.

For example, a multilayer ceramic capacitor is manufactured as follows. First, a conductive paste for internal electrodes is printed in a predetermined electrode pattern on the surface of a dielectric green sheet containing a dielectric powder such as barium titanate (BaTiO ₃ ) and a binder resin, and then dried to form a dry film. The dry film and the dielectric green sheet are alternately stacked and integrated by heat and pressure bonding to form a bonded body. The bonded body is cut, and an organic binder removal process is performed in an oxidizing atmosphere or an inert atmosphere, and then sintered to obtain a sintered chip (laminate). Next, a paste for external electrodes is applied to both ends of the sintered chip (laminate), and after sintering, nickel plating or the like is performed on the surface of the external electrodes to obtain a multilayer ceramic capacitor.

Conventionally, screen printing has been the most commonly used printing method for printing conductive paste onto dielectric green sheets. However, with the demands for smaller, thinner electronic devices and improved productivity, there is a demand for printing finer electrode patterns with high productivity.

For this reason, it has been proposed to apply gravure printing, a continuous printing method in which conductive paste is filled into the printing pattern (recesses) on a plate and then pressed against the surface to be printed, to printing of conductive paste. The gravure printing method has a high printing speed and excellent productivity.

For example, Japanese Patent Application Laid-Open No. 2003-297667 discloses a gravure printing plate that, of the vertical and horizontal partition walls that separate multiple rectangular recesses arranged on a gravure printing roll (cylinder), the vertical partition walls, i.e., the partition walls that extend in the direction in which the printing material is scraped off by the doctor blade (the circumferential direction of the roll), are arranged so as not to be continuous in a straight line, thereby making it possible to obtain a print that has excellent linear accuracy on the outer edge of the print and is free of pinholes on the printed surface, and a method of manufacturing laminated ceramic electronic components by gravure printing using this gravure printing plate.

In addition, in order to print a conductive paste on a dielectric sheet by gravure printing, it is necessary to develop a conductive paste suitable for this purpose. For example, JP 2019-046781 A discloses a conductive paste that contains a conductive powder, a dispersant, a binder resin, and an organic solvent, the dispersant contains an amino acid-based dispersant with a molecular weight of 5000 or less, the binder resin contains an acetal-based resin, and the organic solvent contains a glycol ether-based solvent, and has a viscosity suitable for gravure printing and excellent dispersibility.

Gravure printing is a method that allows for high-speed printing suitable for mass production, and the gravure printing machine is also large-scale. For this reason, when developing a conductive paste suitable for use in gravure printing, or when manufacturing small quantities of electronic components, a small gravure printing machine that uses a printing plate is used instead of a large gravure printing machine that uses a gravure printing roll.

A gravure printing machine using a printing plate has a structure such as that shown in FIG. 1, and includes a printing plate 1 on which a printing pattern is formed, a transfer roll 2, and a doctor blade 3.

In a gravure printing machine with this configuration, the printing plate 1 is placed in a flat state, not attached to a roll-shaped printing cylinder. The transfer roll 2 contacts the upper surface of the printing plate 1 and moves over the printing plate 1 in the direction of arrow A while rotating. The doctor blade 3 moves in the direction of arrow A at the same speed as the transfer roll 2, while contacting the upper surface of the printing plate 1.

One end of the dielectric sheet 4 is fixed onto the transfer roll 2. The conductive paste 5 is dropped between the doctor blade 3 and the printing pattern (recesses) 6 formed on the printing plate 1.

The doctor blade 3 has the function of filling the printing pattern 6 formed on the printing plate 1 with conductive paste 5 and removing excess conductive paste 5 that exists in other areas.

In gravure printing using the printing plate 1, after the conductive paste 5 is dropped between the doctor blade 3 and the printing pattern 6 on the printing plate 1, the transfer roll 2 and doctor blade 3 move simultaneously and at the same speed while contacting the upper surface of the printing plate 1, and the doctor blade 3 embeds the conductive paste 5 into the printing pattern 6 formed on the upper surface of the printing plate 1, and removes excess conductive paste 5. Next, the transfer roll 2 with the dielectric sheet 4 attached rotates while contacting the upper surface of the printing plate 1, and the conductive paste 5 embedded in the printing pattern 6 is transferred to the dielectric sheet 4, thereby performing printing.

JP 2003-297667 A JP 2019-046781 A

As mentioned above, progress is being made in miniaturizing and increasing the integration density of multilayer ceramic electronic components, and there is an increasing demand for the manufacture of multilayer ceramic electronic components using gravure printing methods, which can be done in smaller quantities and at higher speeds. Conductive pastes suitable for gravure printing are also being developed. In such cases, it is preferable to apply the gravure printing method using a plate-type gravure printer.

However, when using a gravure printing method that uses a plate-type gravure printing machine, there may be a problem of print defects that do not occur during mass production, particularly when printing at high speeds such as a print speed of 10 m/s or more, which is the same as during mass production, and generally in the range of 20 m/s to 70 m/s. Print defects can cause serious problems, such as the occurrence of print defects that do not occur during mass production, resulting in places where no internal electrode layer exists, making it impossible to create a structure having a laminated structure of dielectric layers and internal electrode layers, and thus failing to function as a capacitor, or resulting in a state similar to an insufficient number of layers, and thus failing to obtain the desired electrostatic capacitance.

For this reason, during the development stage, it is necessary to prevent such printing defects and be able to properly evaluate the printability of the conductive paste during mass production by gravure printing.

In addition, gravure printing using printing plates is sometimes used for small-lot production, so in such cases, prevention of missing prints is required from the standpoint of ensuring product productivity.

In order to solve the above problems, the present invention aims to provide a printing method that uses a printing plate to perform gravure printing, and that enables proper printing without print defects, as occurs during mass production, even when performing high-speed printing under the same conditions as during mass production, thereby allowing for proper evaluation of printability during mass production.

The present invention relates to a gravure printing method using a gravure printing machine equipped with a printing plate having a printing pattern on its surface, a transfer roll that rotates and moves while in contact with the surface of the printing plate, and a doctor blade that is disposed forward of the transfer roll in the direction of movement and moves together with the transfer roll while in contact with the surface of the printing plate, in which a conductive paste is applied to the surface of the printing plate by the doctor blade, and the conductive paste is transferred and printed onto a dielectric sheet attached to the transfer roll.

In particular, the gravure printing method of the present invention is characterized in that the conductive paste is applied to the surface of the printing plate in advance using a spare blade that moves over the surface of the printing plate, and then the doctor blade and the transfer roll are moved to print the conductive paste onto the dielectric sheet.

The installation height of the spare blade, i.e., whether the spare blade is brought into contact with the surface of the printing plate or whether a gap is provided between the bottom edge of the spare blade and the surface of the printing plate, is determined according to the material of the spare blade. If a gap is provided between the bottom edge of the spare blade and the surface of the printing plate, it is preferable that the gap is 30 μm or more and 100 μm or less.

In the gravure printing machine, the spare blade is positioned ahead of the doctor blade in the direction of movement, and the spare blade is moved together with the doctor blade and the transfer roll, so that the primary coating by the spare blade and the coating by the doctor blade can be performed continuously.

The present invention relates to a gravure printing machine for transferring and printing a conductive paste onto a dielectric sheet, the gravure printing machine comprising a printing plate having a printing pattern on its surface, a transfer roll that rotates and moves while contacting the surface of the printing plate and to which the dielectric sheet is attached, and a doctor blade that is disposed ahead of the transfer roll in the direction of movement and moves together with the transfer roll while contacting the surface of the printing plate.

In particular, the gravure printing machine of the present invention is characterized in that it further includes a spare blade that is disposed forward of the doctor blade in the direction of movement and moves together with the doctor blade and the transfer roll, and is configured so that the primary application of the conductive paste by the spare blade and the application of the conductive paste by the doctor blade are performed continuously.

The present invention relates to a method for manufacturing a multilayer ceramic electronic component, which involves printing a conductive paste on the surface of a dielectric sheet, stacking the dielectric sheets on which the conductive paste is printed, and firing the resulting laminate to form an internal electrode layer.

In particular, the method for manufacturing a multilayer ceramic electronic component of the present invention is characterized by printing the conductive paste using the gravure printing method of the present invention.

According to the present invention, in a gravure printing method using a printing plate, a preliminary blade is used to perform a primary application in which a thin layer of conductive paste is applied to the surface of the printing plate, and the conductive paste is then applied to the printing pattern formed on the printing plate to a certain extent while distributing the conductive paste widely over the surface of the printing plate, and then a final application is performed using a doctor blade, which makes it possible to thoroughly fill the printing pattern with conductive paste while removing excess paste, and to obtain a dielectric sheet on which the conductive paste is printed without any printing defects.

In this way, the present invention makes it possible to obtain a multilayer ceramic electronic component having an internal electrode layer formed thereon, which is obtained by firing a dielectric sheet printed with a conductive paste and a laminate of the dielectric sheet, which is free of printing defects and has the same desired quality as mass-produced products. This makes it possible to accurately evaluate the conductive paste suitable for multilayer ceramic electronic components, and in the case of small-scale production, it becomes possible to manufacture multilayer ceramic capacitors with a high yield.

FIG. 1 is a schematic diagram showing a conventional gravure printing method using a printing plate system. FIG. 2 is a schematic diagram showing the gravure printing method of the plate type according to the present invention. Fig. 3(A) is a photograph of a dielectric sheet on which a conductive paste was printed, obtained in Example 1. Fig. 3(B) is a photograph of a dielectric sheet on which a conductive paste was printed, obtained in Comparative Example 2.

The inventors conducted extensive research into the causes of print defects that occur during the development stage due to gravure printing using a printing plate, but do not occur during mass production. As a result, they discovered that there was a problem with the process of dripping conductive paste onto the surface of the printing plate and then spreading and applying the conductive paste over the surface of the printing plate using a doctor blade.

In other words, in mass production, the cylinder, which is a roll-shaped printing cylinder, is immersed in the conductive paste, and the conductive paste is fully filled into the printing pattern (recesses). However, in gravure printing using a printing plate, when the transfer roll and doctor blade are moved at a higher speed to match the transfer conditions in mass production, that is, when the moving speed of the transfer roll and doctor blade is set to 10 m/sec or more, particularly when the printing speed is set to a high speed in the range of 20 m/sec to 70 m/sec, which is the same as in mass production, the conductive paste is pushed by the doctor blade and cannot keep up with the speed as it moves on the surface of the printing plate, causing it to slip against the surface of the printing plate, and it may not be able to penetrate into the inside of the printing pattern formed on the printing plate.

As a result of extensive research into solving the above problems, the inventors discovered that in a gravure printing method using a printing plate, a preliminary blade is used to perform a primary application in which the conductive paste is stretched to a certain extent before the final printing process using a transfer roll and doctor blade, making it possible to print the conductive paste on a dielectric sheet without causing print defects even when printing at high speeds similar to those used in mass production, and thus completing the present invention.

(Gravure printing method)
The present invention relates to a gravure printing method using a printing plate, as shown in Fig. 2, in the same manner as the conventional gravure printing method, a gravure printing machine is used that includes a printing plate 1 having a printing pattern 6 on its surface, a transfer roll 2 that rotates and moves while in contact with the surface of the printing plate 1, and a doctor blade 3 that is disposed ahead of the transfer roll 2 in the moving direction (arrow A) and moves together with the transfer roll 2 while in contact with the surface of the printing plate 1, and a conductive paste 5 is applied to the surface of the printing plate 1 by the doctor blade 3, and the conductive paste 5 is transferred and printed on a dielectric sheet 4 attached to the transfer roll 2.

In particular, the gravure printing method of the present invention is characterized in that a preliminary blade (stretching blade) 7 that moves over the surface of the printing plate 1 is used to apply the conductive paste 5 to the surface of the printing plate 1 in advance, and then the doctor blade 3 and transfer roll 2 are moved to print the conductive paste 5 onto the dielectric sheet 4.

It is preferable to position the spare blade 7 ahead of the doctor blade 3 in the direction of movement, and move the spare blade 7 together with the doctor blade 3 and the transfer roll 2 to perform primary application by the spare blade 7 and application by the doctor blade 3 successively.

More specifically, after the conductive paste 5 is dropped between the spare blade 7 and the printing pattern 6 on the printing plate 1, the transfer roll 2, doctor blade 3, and spare blade 7 move simultaneously and at the same speed while contacting the upper surface of the printing plate 1, and the spare blade 7 spreads the conductive paste 5 evenly over the entire printing pattern 6 and removes excess conductive paste 5. Next, in this state, the doctor blade 3 embeds the conductive paste 5 in the printing pattern 6 and removes excess conductive paste 5. Next, the transfer roll 2 with the dielectric sheet 4 attached rotates and moves while contacting the upper surface of the printing plate 1, and the conductive paste 5 embedded in the printing pattern 6 is transferred to the dielectric sheet 4, thereby performing printing.

In this way, in the present invention, the conductive paste 5 is spread over the entire printed pattern 6 formed on the printing plate 1 by the initial application using the spare blade 7. Therefore, when the conductive paste 5 is then finally applied using the doctor blade, the entire printed pattern 6 is filled with the conductive paste 5 appropriately and sufficiently. This prevents printing defects caused by some printed patterns 6 not being filled with the conductive paste 5.

(spare blade)
The material used for the spare blade 7 is not particularly limited, and a general metal or resin can be used as long as it does not cause problems such as dissolving in the conductive paste 5. In the case of a metal, a material selected from stainless steel such as SUS, copper, etc., and in the case of a resin, a material selected from polyethylene, silicone-based resin, etc.

There are no limitations on the shape of the spare blade 7 in terms of height or thickness, and any shape can be used as long as it has enough strength to avoid deformation during the first application. When using general materials, a spare blade 7 thickness of 0.1 mm or more will often provide sufficient strength, and a thickness of 0.5 mm or more is preferable.

The height of the spare blade 7 is not particularly limited, but if the height is too low, the conductive paste 5 may climb over the spare blade 7 when stretching it and fall back to its original location, which may result in the spare blade 7 failing to stretch the conductive paste 5. For this reason, it is preferable that the height of the spare blade 7 be equal to or greater than the height of the doctor blade 3.

The width of the spare blade 7 must be equal to or greater than the width of the printed pattern 6, since the conductive paste 5 must be spread in advance over the entire printed pattern 6 formed on the printing plate 1 so that the final filling by the doctor blade 3 can be performed appropriately.

The height of the bottom edge of the spare blade 7 from the surface of the printing plate 1 (when installed in a gravure printing machine, the installation height of the spare blade 7 inside the printing machine) is determined appropriately according to the material of the spare blade 7. In the case of a spare blade 7 made of elastic or flexible resin, it can be brought into contact with the surface of the printing plate 1 in the same way as the doctor blade 3. In this case, when the spare blade 7 moves, the conductive paste 5 is pushed forward by the spare blade 7 in response to the deformation of the spare blade 7, and passes under the spare blade 7 and slips backward, so that it is evenly applied to at least the entire printing pattern 6 of the printing plate 1.

On the other hand, in the case of a spare blade 7 made of a metal that is not elastic or flexible, it is preferable to provide a gap between the bottom edge of the spare blade 7 and the surface of the printing plate 1. In this case, there are no particular limitations as long as the bottom edge of the spare blade 7 does not come into contact with the surface of the printing plate 1, that is, the bottom edge of the spare blade 7 moves while maintaining a gap with the surface of the printing plate 1, and the conductive paste 5 can be appropriately spread over the entire printing pattern 6. Therefore, the gap between the bottom edge and the printing plate 1 when the spare blade 7 is installed is set to any value greater than 0.

Depending on the material and shape of the spare blade 7, it is preferable that the gap between the bottom edge of the spare blade 7 and the printing plate 1 be 30 μm or more and 100 μm or less.

If the gap between the bottom edge of the spare blade 7 and the printing plate 1 is less than 30 μm, the amount of conductive paste 5 that slips through the spare blade 7 will be insufficient, and the final filling with the doctor blade 3 may not be able to sufficiently fill the printed pattern 6 with conductive paste, which may result in printing defects. It is preferable to set this gap to 40 μm or more.

If the gap between the bottom edge of the spare blade 7 and the printing plate 1 exceeds 100 μm, only the upper part of the conductive paste 5 dropped onto the printing plate 1 can be extruded when the conductive paste 5 is extruded. Therefore, if the amount of conductive paste 5 is small, the conductive paste 5 is not extruded until the latter half of the printing pattern 6, and the conductive paste 5 is not fully applied to the entire printing pattern 5 on the printing plate 1 at the final filling by the doctor blade 3, resulting in printing defects or the need to prepare a large amount of conductive paste 5 to increase the amount of extrusion. It is preferable to set this gap to 70 μm or less.

It is preferable to set the installation height of the spare blade 7 (the gap between the bottom edge of the spare blade 7 and the printing plate 1) appropriately in advance, from the viewpoint of preventing poor filling of the printed pattern 6 or the occurrence of a large amount of excess conductive paste 5, by performing test printing or the like, with an appropriate amount of conductive paste according to the material and shape of the spare blade 7 and the material of the conductive paste 5.

(Gravure printing machine)
The gravure printing press of the present invention is similar to a conventional gravure printing press, so long as it can perform the primary coating using the above-mentioned spare blade 7, except for the provision of the spare blade 7. Therefore, a description of each element constituting the gravure printing press will be omitted.

In the gravure printing machine of the present invention, the spare blade 7 may be installed independently of the transfer roll 2 and doctor blade 3, so long as the spare blade 7 can apply the paste 5 to the surface of the printing plate 1 in advance, before the step of applying the paste 5 to the printing pattern 6 of the printing plate 1 by the doctor blade 3.

However, in the gravure printing machine of the present invention, it is also possible to position the spare blade 7 forward of the doctor blade 3 in the direction of movement and install it so that it moves together with the doctor blade 3 and the transfer roll 2.

Specifically, the spare blade 7 can be attached to a drive device for moving the doctor blade 3 and the transfer roll 2 in the horizontal direction, such as a stepping motor, preferably with a known attachment mechanism so that the installation height of the spare blade 7 can be adjusted. It is also possible to attach the spare blade 7 to a drive device for moving it horizontally by itself.

(Manufacturing method of multilayer ceramic electronic components)
In the method for manufacturing a multilayer ceramic electronic component of the present invention, a conductive paste is printed on the surface of a dielectric sheet using the gravure printing machine and gravure printing method of the present invention, and the dielectric sheets on which the conductive paste is printed are stacked to form a laminate, which is then fired to form an internal electrode layer. The laminate with the internal electrode layer formed thereon is appropriately cut to obtain a multilayer ceramic electronic component.

By applying the present invention, it is possible to prevent the production of multilayer ceramic electronic components in which the internal electrode layers are not properly formed due to printing defects. This makes it possible to accurately evaluate the conductive paste suitable for multilayer ceramic electronic components, and in the case of small-lot production, it becomes possible to manufacture multilayer ceramic capacitors with a high yield.

Below, examples of the present invention are shown together with comparative examples, but the present invention is not limited to these examples.

Example 1
A conductive paste that did not cause printing defects in mass-produced gravure printing was prepared as the conductive paste. An electrode pattern was printed on a dielectric sheet using a plate-type gravure printing machine equipped with a spare blade, the configuration of which is shown in FIG. 2, and the printability was evaluated.

[Printing conditions]
Printing speed: 50 m/sec Doctor blade material: SUS Doctor blade shape: Thickness: 0.1 mm, height: 20 mm, width: 130 mm
Doctor blade height (gap): 0 μm
Spare blade material: SUS Spare blade shape: Thickness: 0.5 mm, Height: 20 mm, Width: 100 mm
Spare blade height (gap): 30 μm
Plate shape: Thickness: 3 mm, Length: 400 mm, Width: 200 mm
Printing pattern: Overall length: 80mm, Overall width: 80mm
Electrode shape for evaluation: Thickness: 10 μm, length: 7 mm, width: 2 mm
Distance between electrodes: Vertical: 1 mm, Horizontal: 1 mm

[Printability evaluation]
After printing, in order to check for printing defects in the electrode pattern, the electrode pattern on the dielectric sheet was photographed and binarized using Image-j to calculate the printing area.

The printing area ratio was calculated using the following formula (1) from the calculated actual printing area and the printing pattern area on the printing plate used for printing.

Print area ratio (%) = (actual print area) / (print pattern area) ... (1)
Taking into account the variation in the binarization process when calculating the printing area, a printing area ratio of 95% or more was evaluated as good gravure printing.

The evaluation results are shown in Table 1. A photograph of the printed sample in Example 1 is shown in Figure 3 (A).

Example 2
An electrode pattern was printed under the same conditions as in Example 1, except that the height (gap) of the lower side of the spare blade from the surface of the printing plate was set to 100 μm, and the printability was evaluated. The evaluation results are shown in Table 1.

(Comparative Example 1)
The same conductive paste as that used in Example 1 was prepared as the conductive paste, and an electrode pattern was printed under the same conditions as in Example 1, except that a conventional plate-type gravure printing machine without a spare blade was used, and the printability was evaluated. The evaluation results are shown in Table 1.

(Comparative Example 2)
An electrode pattern was printed and printability was evaluated under the same conditions as in Example 1, except that the height (gap) of the lower edge of the spare blade from the surface of the printing plate was set to 0 μm. The evaluation results are shown in Table 1. A photograph of the printed state in Comparative Example 2 is shown in FIG. 3(B).

From the results in Table 1, it can be seen that the electrode pattern printed by the gravure printing method of the embodiment using the plate-type gravure printing machine with the spare blade of the present invention can be satisfactorily gravure printed without any printing defects.

In contrast, it is understood that the electrode pattern printed by the gravure printing method of Comparative Example 1 using a conventional plate-type gravure printing machine without a spare blade has print chipping. In Comparative Example 2, which has a spare blade but has an installation height of 0 μm, there is not enough conductive paste remaining in the final application to prevent chipping of the printed pattern, and the material of the spare blade used in this evaluation (SUS) is essentially close to the state of printing using only a conventional doctor blade, and print chipping occurs, although less than in Comparative Example 1. However, for example, when a spare blade made of resin with high elasticity or flexibility is used, the conductive paste can slip under the spare blade even when the installation height is set to 0 μm, so it is thought that the same effect as in the examples of the present invention can be obtained.

1 Printing plate 2 Transfer roll 3 Doctor blade 4 Dielectric sheet 5 Conductive paste 6 Printing pattern 7 Spare blade

Claims (5)

A gravure printing method using a gravure printing machine including a printing plate having a printing pattern on a surface thereof, a transfer roll which rotates and moves while in contact with the surface of the printing plate, and a doctor blade which is disposed forward of the transfer roll in a moving direction and moves together with the transfer roll while in contact with the surface of the printing plate, the gravure printing method comprising the steps of applying a conductive paste to the surface of the printing plate by the doctor blade, and transferring and printing the conductive paste onto a dielectric sheet attached to the transfer roll,
a preliminary blade is used to move over the surface of the printing plate, and the conductive paste is dropped between the preliminary blade and the printing pattern on the surface of the printing plate , the conductive paste is spread over the entire printing pattern, and excess conductive paste is removed; thereafter, the doctor blade and the transfer roll are moved, and the conductive paste is embedded in the printing pattern by the doctor blade, and the conductive paste is printed on the dielectric sheet while removing excess conductive paste;
Gravure printing method. The gravure printing method according to claim 1, wherein a gap is provided between the lower edge of the spare blade and the surface of the printing plate, and the gap is set to 30 μm or more and 100 μm or less. The gravure printing method according to claim 1 or 2, in which the spare blade is disposed forward of the doctor blade in the moving direction, and the spare blade is moved together with the doctor blade and the transfer roll, so that the primary coating by the spare blade and the coating by the doctor blade are performed continuously. A gravure printing machine for transferring and printing a conductive paste onto a dielectric sheet,
A gravure printing machine comprising: a printing plate having a printing pattern on a surface thereof; a transfer roll which rotates and moves while contacting the surface of the printing plate and to which the dielectric sheet is attached; and a doctor blade which is disposed forward of the transfer roll in a moving direction, moves together with the transfer roll while contacting the surface of the printing plate , and applies the conductive paste to the surface of the printing plate ,
a spare blade that is disposed forward of the doctor blade in the moving direction and moves on the surface of the printing plate together with the doctor blade and the transfer roll;
The spare blade applies the conductive paste dropped between the spare blade and the printing pattern to the surface of the printing plate in advance as a first application, spreads the conductive paste over the entire printing pattern, and removes excess conductive paste, and the doctor blade embeds the conductive paste after the first application into the printing pattern and removes excess conductive paste, and the first application of the conductive paste by the spare blade and the application of the conductive paste by the doctor blade are configured to be performed continuously.
Gravure printing machine. A method for producing a multilayer ceramic electronic component, comprising the steps of: printing a conductive paste on a surface of a dielectric sheet; stacking the dielectric sheets on which the conductive paste is printed to form a laminate; and firing the laminate to form an internal electrode layer,
A method for producing a laminated ceramic electronic component, comprising printing the conductive paste by the gravure printing method according to any one of claims 1 to 3.

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