JP2016130004A - Printing plate, method for manufacturing laminated ceramic electronic component, and printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the form accuracy and smoothness, and the thickness homogeneity of a graphic pattern by stably generating stringiness of printing paste, generated between a printing plate and a printed object when transferring the printing paste to the printed object by intaglio printing.SOLUTION: A printing pattern 11 of a printing plate 10 used in intaglio printing includes: a plurality of partition raised parts 12 extended continuing to a print direction X, and arranged at a prescribed interval in an orthogonal direction Y; and a groove-like cell part 15 formed between the adjacent partition raised parts 12 and holding printing paste (conductive paste) P. The partition raised parts 12 are formed by connecting a plurality of print direction raised parts 13 arranged in a zigzag shape in the print direction X by connection raised parts 14 arranged in the print direction raised parts 13 adjacent to the print direction X.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a printing plate for intaglio printing, a multilayer ceramic produced through a process of printing a printing paste on a ceramic green sheet or a carrier film using the printing plate to form a graphic pattern for forming internal electrodes. The present invention relates to an electronic component manufacturing method and a printing apparatus.

  A multilayer ceramic capacitor, which is one of the typical multilayer ceramic electronic components, includes, for example, a plurality of internal electrodes 42a and 42b stacked in a ceramic element 41 via a ceramic layer 43, as shown in FIG. The internal electrodes 42a and 42b facing each other through the ceramic layer 43 are alternately drawn out to the end faces 44a and 44b on the opposite side of the ceramic element 41, and are connected to the external electrodes 45a and 45b formed on the end faces. Have a structure.

  A multilayer ceramic capacitor having such a structure is generally a ceramic green sheet in which a conductive paste is printed and an internal electrode pattern is formed on the surface, and an internal electrode pattern is not formed on both upper and lower surfaces. By firing a laminate obtained by laminating green sheets and press-bonding, and then applying a conductive paste to both end faces of the fired laminate (ceramic element) and baking to form a pair of external electrodes It is manufactured.

As a method for printing internal electrode patterns and the like, a gravure printing method is widely used from the viewpoint of improving productivity.
In this gravure printing method, for example, as shown in FIG. 17, the ceramic green sheet (printed material) 1 is passed between the gravure roll 151 and the back roll 154, and held on the print pattern on the surface of the gravure roll 151. In this method, the internal paste pattern (graphic pattern) 2 is printed on the ceramic green sheet 1 by transferring the conductive paste onto the surface of the ceramic green sheet 1.

By the way, in the gravure printing method, a printing plate is used in which a printing pattern having a shape corresponding to the internal electrode pattern 2 to be printed is formed on the outer peripheral surface of a cylindrical gravure roll 151. It is composed of a plurality of cell parts separated by a bank so that a certain amount of conductive paste can be reliably held.
As shown in FIG. 18, the printing pattern 111 of the printing plate 110 disclosed in Patent Document 1, which is one of the printing plates, includes a plurality of partition banks 112 extending along the printing direction and orthogonal to the printing direction. It is comprised by the groove-shaped cell part 115 formed between the partition banks 112 adjacent to the direction to do. When the conductive paste is transferred, printing is performed while threading of the conductive paste that occurs when the printing plate 110 and the ceramic green sheet 1 are separated from each other is generated along the partition bank 112.

JP 2006-110916 A

  However, the partition bank 112 described in Patent Document 1 has a bent portion 112a, and the behavior of the conductive paste in the bent portion 112a, such as transfer and stringing, is the property of the conductive paste (for example, viscosity). The figure pattern (internal electrode pattern) 2 formed by gravure printing has a problem in that the shape accuracy of the figure pattern (internal electrode pattern) 2 is reduced, unevenness, variation in thickness, and the like occur.

  The present invention solves the above-described problems, and uses a printing plate capable of improving the shape accuracy, smoothness, thickness uniformity, and the like of a graphic pattern formed by printing a printing paste. It is an object of the present invention to provide a method for manufacturing a laminated ceramic electronic component and a printing apparatus.

In order to solve the above problems, the printing plate of the present invention is
A printing plate for intaglio printing for printing a printing paste on a substrate so as to have a predetermined graphic pattern,
A plurality of printing patterns corresponding to the graphic pattern to be printed are formed on the surface of the printing plate,
The predetermined direction along the surface of the plate material is configured to correspond to the printing direction on the substrate,
The printing pattern includes a plurality of printing direction banks arranged in a staggered manner in the printing direction, and one partition bank having a connecting bank arranged to connect the printing direction banks adjacent to the printing direction. And a groove-like cell portion for holding the printing paste on both sides of the partition bank.

In order to solve the above problems, the other printing plate of the present invention is
A printing plate for intaglio printing for printing a printing paste on a substrate so as to have a predetermined graphic pattern,
A plurality of printing patterns corresponding to the graphic pattern to be printed are formed on the surface of the printing plate,
The predetermined direction along the surface of the plate material is configured to correspond to the printing direction on the substrate,
The printing pattern includes a plurality of printing direction banks arranged in a staggered manner in the printing direction, and a partition bank having a connecting bank arranged to connect the printing direction banks adjacent to the printing direction. A plurality of cell portions are provided at predetermined intervals in a direction orthogonal to the printing direction, and a groove-like cell portion is formed between the adjacent partition banks and holds the printing paste. It is characterized by.

  In the printing plate of the present invention, it is preferable that the plurality of printing direction banks are arranged in parallel to each other at a predetermined interval in a direction orthogonal to the printing direction.

  By providing the above configuration, stringing generated by each partition bank can be generated in parallel at a predetermined interval, and the smoothness of the graphic pattern and the uniformity of the thickness can be improved.

  In addition, it is preferable that the printing pattern includes a plurality of end projecting banks formed on at least one of end portions in a direction orthogonal to the printing direction.

  For example, the edge protruding bank is arranged at the same position as the connecting bank along the printing direction, or, among the printing direction banks arranged in a staggered manner, faces the edge in the direction orthogonal to the printing direction. By disposing them so as to oppose each other, it becomes possible to increase the amount of change in the cell width of the edge that periodically changes along the printing direction. As a result, it is possible to continuously generate yarn drawing at portions having different cell widths and perform stable transfer.

In the printing plate of the present invention,
It is preferable that the plate material is a cylindrical gravure roll, and the surface of the plate material is an outer peripheral surface of the gravure roll.

  By configuring the printing plate of the present invention as a gravure printing plate, it is possible to improve the shape accuracy and smoothness of the graphic pattern, the uniformity of the thickness, and the like, and to speed up printing on the substrate.

  The printing plate of the present invention is preferably a planographic printing plate in which the printing pattern is formed on a flat plate material.

  Even when the printing plate of the present invention is configured as a lithographic printing plate, it is possible to improve the shape accuracy, smoothness, thickness uniformity, etc. of the graphic pattern.

  In addition, the printing plate of the present invention is preferably a printing plate for offset printing in which a printing paste is printed on a printing material from the printing plate via an intermediate transfer member.

  Even when the printing plate of the present invention is used for offset printing, it is possible to improve the shape accuracy, smoothness, thickness uniformity, etc. of the graphic pattern.

  Moreover, it is preferable that the cell width which is the dimension of the said cell part in the direction orthogonal to the said printing direction is comprised so that it may differ periodically along the said printing direction.

  By providing the above configuration, it is possible to reliably supply the printing paste from the cell portion to the partition bank, reliably generate stringing in the partition bank, and improve the smoothness and thickness uniformity of the graphic pattern. It becomes possible.

  Moreover, it is preferable that the said printing direction bank is comprised so that the principal part may become parallel to the said printing direction.

  By providing the above-described configuration, it is possible to suppress the stringing state from being disturbed, and to reliably generate the stringing along the printing direction bank, and to improve the smoothness and thickness uniformity of the graphic pattern. It becomes possible.

  In addition, the connecting banks are formed such that, when viewed in a plan view, an inferior angle between the center line and the center line of the adjacent printing direction bank is more than 90 ° and less than 180 °. It is preferable.

  By providing the above configuration, it becomes possible to gradually advance the stringing, and it is possible to improve the smoothness of the graphic pattern and the uniformity of the thickness.

  Moreover, it is preferable that the notch which connects the said cell parts partitioned off by the said printing direction bank is formed in a part of the said printing direction bank.

  By providing the said structure, the contact area of the edge part of a printing direction bank and printing paste increases, and the quantity of the printing paste supplied on a printing direction bank can be increased. As a result, stringing can be reliably generated, and the smoothness of the graphic pattern and the uniformity of the thickness can be improved.

  Moreover, it is preferable that at least one of the printing direction bank and the connection bank is formed so that the height thereof is lower than the height of the outer peripheral surface of the gravure roll.

  By providing the above configuration, the printing paste supplied on the printing direction bank or the connecting bank whose height is lowered is pressed against the substrate, and the transfer amount of the printing paste can be increased. As a result, it is possible to suppress the occurrence of printing defects such as missing transfer.

In addition, the method for manufacturing the multilayer ceramic electronic component of the present invention includes:
It is characterized by comprising a step of printing a conductive paste as a printing paste on a ceramic green sheet or carrier film using the above printing plate to form a graphic pattern for forming internal electrodes.

Moreover, the printing apparatus of the present invention includes:
The printing plate is provided.

In the printing plate of the present invention (printing plate for intaglio printing), the printing pattern connects a plurality of printing direction banks arranged in a staggered manner in the printing direction and printing direction banks adjacent to the printing direction. Since it has one partition bank comprising a connected bank, a printing bank and a connecting bank, and a groove-like cell part that holds the printing paste on both sides of the partition bank, When the printing plate is separated from the substrate, the stringing of the printing paste formed between the partition bank and the substrate can be continuously generated along the partition bank. Shape accuracy, smoothness, thickness uniformity, and the like can be improved.
In addition, since the printing pattern is configured with one partition bank, it is possible to provide a printing plate that is excellent in shape accuracy, smoothness, thickness uniformity, and the like and capable of forming a small figure pattern. Is possible.

In another printing plate of the present invention (printing plate for intaglio printing), the printing pattern includes a plurality of printing direction banks arranged in a staggered manner in the printing direction and a printing direction bank adjacent to the printing direction. A plurality of partition banks each including a connection bank arranged to be connected to each other, a printing direction bank and a connection bank at predetermined intervals in a direction orthogonal to the printing direction, and adjacent to each other. Since it has a groove-shaped cell part that is formed between the banks and holds the printing paste, it is formed between the partition bank and the substrate when the printing plate is separated from the substrate. The stringing of the paste can be continuously generated along the partition bank, and the shape accuracy, smoothness, thickness uniformity, etc. of the graphic pattern can be improved.
In addition, because the partition banks are provided at a predetermined interval in the direction orthogonal to the printing direction, the partition banks adjacent to the orthogonal direction and the stringing that occurs in the vicinity prevent contact and interference with each other. can do.

  In addition, the method for producing a multilayer ceramic electronic component according to the present invention forms a graphic pattern for forming an internal electrode by printing a conductive paste as a printing paste on a ceramic green sheet or carrier film using the above printing plate. Therefore, it is possible to efficiently manufacture a highly reliable multilayer ceramic electronic component having an internal electrode having a uniform thickness and high shape accuracy.

  Moreover, since the printing apparatus of this invention is equipped with said printing plate, it prints a printing paste using this printing apparatus, and forms a figure pattern excellent in shape accuracy and uniform thickness efficiently. It becomes possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram for explaining a configuration of a printing apparatus according to a first embodiment of the present invention, where (a) is a schematic front view and (b) is an enlarged view of a main part. It is a figure for demonstrating the gravure roll used for the printing apparatus shown in FIG. It is an expanded view of the printing pattern of the printing plate concerning Embodiment 1 of this invention. FIG. 4 is a partially enlarged view of the print pattern shown in FIG. 3. It is a figure which shows the other example of the printing pattern of the printing plate concerning Embodiment 1 of this invention. It is a figure which shows the further another example of the printing pattern of the printing plate concerning Embodiment 1 of this invention. It is a figure which shows the further another example of the printing pattern of the printing plate concerning Embodiment 1 of this invention. It is a figure which shows the further another example of the printing pattern of the printing plate concerning Embodiment 1 of this invention. It is a figure which shows the further another example of the printing pattern of the printing plate concerning Embodiment 1 of this invention. It is a figure which shows the further another example of the printing pattern of the printing plate concerning Embodiment 1 of this invention. It is a figure which shows the further another example of the printing pattern of the printing plate concerning Embodiment 1 of this invention. It is a figure which shows the further another example of the printing pattern of the printing plate concerning Embodiment 1 of this invention, (a) is a top view, (b) is AA sectional drawing. It is a figure which shows the printing pattern of the printing plate concerning Embodiment 2 of this invention. It is a figure which shows the modification of the printing pattern of the printing plate concerning Embodiment 2 of this invention. It is a figure which shows the other modification of the printing pattern of the printing plate concerning Embodiment 2 of this invention. It is sectional drawing which shows the structure of a multilayer ceramic capacitor. It is a figure for demonstrating the outline | summary of the gravure printing method. It is a figure which shows the printing pattern of the conventional printing plate.

  In the following, embodiments of the present invention will be shown to describe the features of the present invention in more detail. In this embodiment, an example in which a gravure roll is used as a printing plate for intaglio printing is shown.

[Embodiment 1]
FIG. 1 is a diagram showing a schematic configuration of a printing apparatus using a printing plate according to an embodiment (first embodiment) of the present invention, and FIG. 2 is a perspective view showing a gravure roll used in the printing apparatus of FIG. FIG.
The printing apparatus 50 according to the first embodiment is a printing apparatus used for printing a conductive paste (printing paste) P for forming an internal electrode pattern on a ceramic green sheet 1 in a manufacturing process of a multilayer ceramic capacitor.

As shown in FIGS. 1 and 2, the printing apparatus 50 includes a gravure roll 51 having a plurality of printing patterns 11 on the surface, a paste tank 52 that stores the conductive paste P, and surplus adhered to the gravure roll 51. Scraping means (blade) 53, a back roll (impression cylinder) 54, and a transport means (not shown) such as a transport roll for transporting the ceramic green sheet (printed material) 1. I have.
Note that the portion where the ceramic green sheet 1 is pressed against the gravure roll 51 by the back roll 54 and the conductive paste P is transferred to the ceramic green sheet 1 becomes the transfer portion 56 in the printing apparatus 50 of the present invention.

  Then, the ceramic green sheet 1 is passed between the gravure roll 51 and the back roll 54, and the conductive paste P held by the printing pattern 11 on the surface of the gravure roll 51 is transferred to the surface of the ceramic green sheet 1. The internal electrode pattern (graphic pattern) 2 can be printed on the ceramic green sheet 1.

  The supply of the conductive paste P to the gravure roll 51 is performed by immersing the gravure roll 51 in the conductive paste P stored in the paste tank 52 as described above. In addition, the mechanism (not shown) which immerses the said paste tank 52 and the gravure roll 51 comprises the paste supply means 57 in the printing apparatus 50 of this invention.

  A multilayer ceramic capacitor is manufactured by laminating and press-bonding the ceramic green sheet 1 on which the internal electrode pattern 2 is printed as described above, firing, and forming external electrodes. It is also possible to print a conductive paste on a carrier film and transfer the printed conductive paste to a ceramic green sheet to form an internal electrode pattern.

  A printing plate 10 used for intaglio printing uses a cylindrical gravure roll 51 as a plate material, and a plurality of printing patterns 11 corresponding to the internal electrode pattern 2 to be printed are disposed on the outer peripheral surface of the gravure roll 51. It is formed by. The printing plate 10 is configured such that the direction (circumferential direction) along the outer peripheral surface of the gravure roll 51 corresponds to the printing direction of the internal electrode pattern 2.

As shown in FIGS. 3 and 4, the printing pattern 11 extends continuously in the printing direction X, which is the direction opposite to the conveying direction of the ceramic green sheet 1, and is disposed at a predetermined interval in the orthogonal direction Y. A plurality of rectangular bank-shaped partition banks 12, groove-like cell portions 15 formed between partition banks 12 adjacent to each other in a direction (orthogonal direction) Y orthogonal to the printing direction X, and a printing pattern 11 The plurality of end projecting banks 16 formed at both ends in the orthogonal direction Y are provided.
A groove-like cell portion 15 ′ is also formed between the partition bank 12 and the end protruding bank 16.

  The partition bank 12 includes a plurality of printing direction banks 13 arranged in a staggered manner in the printing direction X and a connecting bank 14 arranged to connect the printing direction banks 13 adjacent to the printing direction X. Yes.

That is, the partition banks 12 are arranged in a staggered manner in the printing direction X, and among the plurality of printing direction banks 13 whose center lines are parallel to the printing direction X, the printing direction banks 13 (13a adjacent to each other in the printing direction X). , 13b) are connected by a connecting bank 14 whose center line is parallel to the orthogonal direction Y. Note that the main portion of the printing direction bank 13 is configured by a linear portion parallel to the printing direction X.
In addition, the partition bank 12 includes a branch-like bank protruding in the orthogonal direction Y with the printing direction bank 13 as a base end, and a branch-like bank protruding in the printing direction X with the connection bank 14 as a base end. It may be formed to such an extent that P stringing is not inhibited.

The cell portion 15 is formed in a groove shape by connecting a plurality of partitioned cells 15 a, 15 b, 15 c partitioned by the printing direction bank 13 and the connecting bank 14 in the printing direction X.
In addition, the width of the cell portion 15 (cell width which is a dimension in the orthogonal direction Y) is periodically different along the printing direction X so as to correspond to the arrangement period of the printing direction bank 13 and the connecting bank 14. It is configured. That is, the amount of the conductive paste P held by the cell unit 15 is configured to be different in the printing direction X.

Note that the setting values, printing conditions, and the like of the printing apparatus 50, the conductive paste P, and the printing plate 10 in the first embodiment are as follows.
Gravure roll diameter: 30mm to 300mm
Printing speed: 5m / min to 150m / min
Print pattern dimensions: 0.5 mm or more in the printing direction, 0.05 mm or more in the orthogonal direction The width of the bank in the printing direction (dimension in the orthogonal direction): 1 μm to 25 μm
Connection bank width (dimension in printing direction): 1 μm to 25 μm
Closest gap G in the orthogonal direction of the partition bank: 5 μm
Partition bank height: Same as the outer peripheral surface of the gravure roll Depth of cell part: 1 μm to 100 μm

  Next, the state of the conductive paste P when the conductive paste P is transferred using the printing plate 10 having the above-described configuration, particularly when the printing plate 10 is separated from the ceramic green sheet (printed material) 1. The resulting stringing of the conductive paste P will be described.

The stringing of the conductive paste P that occurs when the conductive paste P is transferred using the printing plate 10 described above mainly follows the trajectory as shown by the broken line L in FIG. Occurs so as to proceed forward of X (in the direction of arrow X). As a result, disturbance of stringing hardly occurs and stable transfer is performed.
In addition, the cell width of the groove-like cell portion 15 is configured to periodically differ along the printing direction X, and stringing occurs every time at a location where the cell width is different. Occurs stably, and stable transfer is performed.
Further, since the partition banks 12 adjacent to each other in the orthogonal direction Y are provided at predetermined intervals, it is possible to prevent the stringing caused by the partition banks 12 adjacent to each other in the orthogonal direction from touching and interfering with each other. And stable transfer is possible

  With the configuration described above, it is possible to improve the shape accuracy, smoothness, thickness uniformity, and the like of the graphic pattern 2 formed on the substrate 1.

  In the printing plate 10 according to the first embodiment, the printing pattern 11 including the partition bank 12 in which the connecting bank 14 is arranged in parallel to the orthogonal direction Y is shown. However, the partition bank 12 as shown in FIGS. It is also possible to employ a printing pattern 11 having

  In the following description, the same reference numerals as those in FIG. 3 denote the same or corresponding parts.

In the print pattern 11 shown in FIG. 5, when viewed in a plan view, the minor angle θ of the angle formed by the center line in the extending direction of the connecting bank 14 and the center line in the extending direction of the printing bank 13 is 90. It is formed to be more than 180 ° and less than 180 ° (in FIG. 5, the minor angle θ = 135 °).
The connecting bank 14 is linearly connected so as to connect the end portion on the front side of one printing direction bank 13a and the end portion on the rear side of the other printing direction bank 13b adjacent to each other in the printing direction X. Is formed.

  Moreover, in the printing pattern 11 shown in FIG. 6, the connection which connects the edge part of the front side of one printing direction bank 13a mutually adjacent to the printing direction X, and the edge part of the back side of the other printing direction bank 13b. The bank 14 is smoothly curved. Also in the connecting bank 14 shown in FIG. 6, the minor angle between the tangent of the center line in the extending direction of the connecting bank 14 and the center line in the extending direction of the printing bank 13 exceeds 90 ° and is 180 °. It is formed to be less.

  By adopting the configuration shown in FIG. 5 or FIG. 6 described above, the stringing can be gradually advanced on the connecting bank 14, and the stringing can be continuously and stably maintained. In addition, compared to the embodiment shown in FIG. 3, the distance (closest approach distance) G between the partition banks 12 adjacent to each other in the direction orthogonal to the printing direction is increased, and the stringing caused by the adjacent partition banks 12 is increased. However, it is possible to suppress interference by touching each other.

  Further, as shown in FIGS. 7 to 9, it is possible to employ a printing pattern 11 in which a notch is provided in a part of the printing direction bank 13.

For example, in the print pattern 11 shown in FIG. 7, a notch 17 is provided in the center in the direction in which the print direction bank 13 extends so as to communicate the cell portions 15 partitioned by the print direction bank 13.
Further, in the print pattern 11 shown in FIG. 8, a notch 17 is provided on the rear side of each printing direction bank 13 so that the cell portions 15 communicate with each other.
Further, in the print pattern 11 shown in FIG. 9, a notch 17 is provided on the front side of each printing direction bank 13 so that the cell portions 15 communicate with each other.

  In the case of the above configuration, since the contact area between the edge of the printing direction bank 13 and the conductive paste P increases, the amount of the conductive paste P supplied onto the printing direction bank 13 can be increased. Thus, stringing can be reliably generated.

  It is also possible to employ the print pattern 11 in which a cutout is provided in a part of the connecting bank 14.

  Moreover, it is also possible to employ a printing pattern 11 in which a part of the partition bank 12 is lowered as shown in FIGS.

For example, the printing pattern 11 shown in FIG. 10 is formed such that the height of the printing direction bank 13 is lower than the height of the outer peripheral surface of the gravure roll 51.
Further, the printed pattern 11 shown in FIG. 11 is formed such that the height of the connecting bank 14 is 0.5 μm or more lower than the height of the outer peripheral surface of the gravure roll 51.
Note that all or a part of the printing direction bank 13 or the connecting bank 14 may be formed to be low.

  In the case of the above configuration, the conductive paste P supplied onto the printing direction bank 13 or the connecting bank 14 having a reduced height is pressed against the substrate 1 and the transfer amount of the conductive paste P is thus reduced. Can be increased.

  Further, as shown in FIGS. 12A and 12B, a shallow region 25 c is formed along the printing direction X in each of the groove-like cell portions 15 formed between the adjacent partition banks 12. It is also possible to adopt the print pattern 11 in which the deep regions 25a and 25b are alternately arranged.

  In the case of the above configuration, the shallow region 25c located so as to partition the deep regions 25a and 25b functions like a weir, and excessive flow of the conductive paste P in the cell portion 15 is caused. It is suppressed and variation in the transfer amount in the printing direction X can be suppressed.

  In addition, by using the printing plate described above, conductive paste is printed on a ceramic green sheet or carrier film to form a highly accurate figure pattern (conductive paste pattern for internal electrode formation) with respect to thickness and shape. Therefore, a high-quality and highly reliable multilayer ceramic electronic component (for example, a multilayer ceramic capacitor as shown in FIG. 13) can be efficiently manufactured.

[Embodiment 2]
In the first embodiment, a printing plate having a structure in which a plurality of partition banks having a printing bank and a connecting bank are provided at predetermined intervals in a direction orthogonal to the printing direction has been described. A printing plate 10 having a structure in which one partition bank 12 is provided as shown in FIG. 13 and groove-like cell portions 15 are formed on both sides of the partition bank 12 will be described. FIG. 13 shows one print pattern 11 constituting the printing plate 10 of the second embodiment.

  As shown in FIG. 13, the printing pattern 11 constituting the printing plate 10 of Embodiment 2 includes a plurality of printing direction banks 13 arranged in a staggered manner in the printing direction X, and a printing direction adjacent to the printing direction X. One partition bank 12 having a connection bank 14 parallel to the orthogonal direction Y and provided to connect the bank 13 is provided.

On both sides of the partition bank 12, two groove-shaped cell portions 15 that hold the printing paste are formed adjacent to each other with the partition bank 12 interposed therebetween.
The printing pattern 11 constituting the printing plate 10 of the second embodiment includes a plurality of end protruding banks 16 disposed at both ends in the orthogonal direction Y with a predetermined interval.

  The end protruding bank 16 is disposed at the same position as the connecting bank 14 along the printing direction X, or faces the end of the printing direction bank 13 arranged in a staggered manner in a direction orthogonal to the printing direction. By disposing them so as to oppose each other, it is possible to increase the amount of change in the cell width at the end that periodically changes along the printing direction. For this reason, it is possible to continuously generate yarn drawing at different cell widths and perform stable transfer.

  Even when the printing plate 10 according to the second embodiment configured as described above is used, the printing plate 10 is separated from the printing material in the printing process in the same manner as when the printing plate 10 according to the first embodiment is used. It is possible to continuously generate the stringing of the printing paste formed between the partition bank 12 and the substrate to be printed along the partition bank 12, and the printing paste is printed. It is possible to improve the shape accuracy and smoothness of the figure pattern such as the internal electrode pattern and the uniformity of the thickness.

  Further, since the end protruding bank 16 is provided, the stringing can be continuously and stably generated at both ends of the print pattern 11. As a result, it is possible to improve the linearity of the end portion of the graphic pattern.

  In addition, since the printing pattern 11 includes one partition bank 12, a printing plate that is excellent in shape accuracy, smoothness, thickness uniformity, and the like and capable of forming a small graphic pattern is provided. be able to.

  FIG. 14 is a diagram illustrating a printing plate according to a modification of the printing plate according to the second embodiment. FIG. 14 shows one print pattern 11 constituting the printing plate 10.

In the printing plate 10, when viewed in plan, a plurality of printing direction banks 13 arranged in a staggered pattern in the printing direction X are connected by connecting banks 14 formed smoothly in a curved shape. A bank 12 is formed.
In addition, the connecting bank 14 constituting the partition bank 12 has an inferior angle θ out of an angle formed by the center line in the extending direction and the center line in the direction in which the printing direction bank 13 extends exceeds 90 ° and less than 180 ° ( In the case of the configuration of FIG. 14, it is formed in such a manner that the recessive angle θ = 135 °.
Other configurations are the same as those of the printing plate 10 of the second embodiment.

  Also in the printing plate 10 having the configuration shown in FIG. 14, as in the printing plate 10 (FIG. 13) of the second embodiment described above, the partition bank 12 is used when the printing plate 10 is separated from the printing material in the printing process. It is possible to continuously generate the stringing of the printing paste formed between the substrate and the printed material along the partition bank 12, and the shape accuracy and smoothness of the graphic pattern, the uniformity of the thickness, etc. The effect that it can improve can be acquired.

  Further, as described above, the minor angle θ is greater than 90 ° and smaller than 180 ° (in the case of the configuration of FIG. 14, the minor angle θ = 135 °). In this case, it is possible to gradually advance the stringing and maintain the stringing continuously and stably.

  FIG. 15 is a diagram illustrating a printing plate according to another modification of the printing plate (FIG. 13) according to the second embodiment. FIG. 15 shows one print pattern 11 constituting the printing plate 10.

  In the printing plate 10, the printing pattern 11 constituting the printing plate 10 is different from the printing plate 10 of the above-described second embodiment shown in FIG. 13 in that the printing pattern 11 does not include the edge protruding bank 16 (see FIG. 13). Although the configuration is different, the configuration is the same as that of the printing plate 10 of the second embodiment described above (see FIG. 13).

  Thus, even when the edge protruding bank is not provided, the print pattern 11 includes a single partition bank formed as described above, and has groove-shaped cell portions on both sides thereof. Therefore, it is possible to provide a printing plate capable of forming a small figure pattern excellent in shape accuracy, smoothness, thickness uniformity, and the like.

  In the above embodiment, the printing plate used for printing the conductive paste for forming the internal electrode pattern for the multilayer ceramic capacitor has been described as an example. However, the present invention is not limited to various electronic components other than the multilayer ceramic capacitor. In the case of manufacturing, it is possible to apply when printing the electrode pattern.

  Further, the printing plate of the present invention is not limited to the case of printing a conductive paste, but can be applied to the printing of various printing pastes such as ceramic paste, dielectric paste, resistance paste, etc. The present invention can also be applied to the case where a ceramic green sheet is formed by printing or the case where a dielectric layer is formed by printing a dielectric paste.

  In the above embodiment, as the partition bank, a rectangular pulse wave bank in which one and the other printing direction banks are alternately arranged in a direction orthogonal to the printing direction is shown as an example. The bank may be formed in a step shape along the printing direction. Also, two or more step-like banks may be formed so as to repeat periodically along the printing direction.

  In the above embodiment, the gravure roll is used as the printing plate. However, the shape of the printing plate is not limited, and a planographic printing plate in which a printing pattern is formed on a flat plate material may be used. Is possible.

In the above embodiment, an example of the direct gravure printing method using a printing plate for intaglio printing has been shown. However, the printing plate of the present invention can also be used for general intaglio printing including an offset printing method. is there.
For example, when the offset printing method is performed, an intermediate transfer member (for example, a blanket roll) is disposed so as to contact both the printing plate and the printing material, and the printing paste filled in the printing pattern of the printing plate is used. It is also possible to configure to transfer to a substrate via an intermediate transfer member.

  In addition, the present invention is not limited to the above embodiment in other respects, for example, a print pattern, a graphic pattern, a specific shape and number of partition banks constituting the print pattern, and the present invention. With respect to the type of multilayer ceramic electronic component manufactured through the process of printing a conductive paste on a ceramic green sheet or carrier film and forming a graphic pattern for forming internal electrodes, etc. Various applications and modifications can be made within the range.

1 Ceramic green sheet (printed material)
2 Internal electrode pattern (graphic pattern)
10 Printing plate (printing plate for intaglio printing)
DESCRIPTION OF SYMBOLS 11 Print pattern 12 Partition bank 13 Printing direction bank 13a One printing direction bank 13b Other printing direction bank 14 Connection bank 15 Cell part 15a, 15b, 15c Compartment cell 16 End part protruding bank 17 Printing direction bank notch 50 Printing apparatus 51 Gravure roll 52 Paste tank 53 Scraping means 54 Back roll 55 Conveying means 56 Transfer part 57 Paste supply means L Trajectory of stringing of conductive paste P Conductive paste (printing paste)
T Threading of conductive paste X Printing direction Y Direction perpendicular to printing direction θ Subordinate angle of angle formed by the center line in the direction in which the connecting bank extends and the center line in the direction in which the printing bank extends

Claims (14)

A printing plate for intaglio printing for printing a printing paste on a substrate so as to have a predetermined graphic pattern,
A plurality of printing patterns corresponding to the graphic pattern to be printed are formed on the surface of the printing plate,
The predetermined direction along the surface of the plate material is configured to correspond to the printing direction on the substrate,
The printing pattern includes a plurality of printing direction banks arranged in a staggered manner in the printing direction, and one partition bank having a connecting bank arranged to connect the printing direction banks adjacent to the printing direction. And a groove-like cell part for holding the printing paste on both sides of the partition bank. A printing plate for intaglio printing for printing a printing paste on a substrate so as to have a predetermined graphic pattern,
A plurality of printing patterns corresponding to the graphic pattern to be printed are formed on the surface of the printing plate,
The predetermined direction along the surface of the plate material is configured to correspond to the printing direction on the substrate,
The printing pattern includes a plurality of printing direction banks arranged in a staggered manner in the printing direction, and a partition bank having a connecting bank arranged to connect the printing direction banks adjacent to the printing direction. A plurality of cell portions are provided at predetermined intervals in a direction orthogonal to the printing direction, and a groove-like cell portion is formed between the adjacent partition banks and holds the printing paste. A printing plate characterized by.   The printing plate according to claim 2, wherein the plurality of printing direction banks are arranged in parallel to each other at a predetermined interval in a direction orthogonal to the printing direction.   The said printing pattern is equipped with the some edge protrusion bank formed in at least one of the edge part of the direction orthogonal to the said printing direction, The any one of Claims 1-3 characterized by the above-mentioned. Printed version.   The printing plate according to any one of claims 1 to 4, wherein the plate material is a cylindrical gravure roll, and the surface of the plate material is an outer peripheral surface of the gravure roll.   The printing plate according to any one of claims 1 to 5, wherein the printing plate is a planographic printing plate in which the printing pattern is formed on a flat plate material.   The printing plate according to any one of claims 1 to 6, wherein the printing plate is a printing plate for offset printing in which a printing paste is printed on a substrate via an intermediate transfer member.   The cell width, which is a dimension in a direction perpendicular to the printing direction of the cell portion, is configured to be periodically different along the printing direction. A printing plate according to the item.   The printing plate according to any one of claims 1 to 8, wherein the printing direction bank is configured such that a main part thereof is parallel to the printing direction.   The connecting banks are formed such that, when viewed in plan, a minor angle of an angle formed between the center line and the center line of the adjacent printing direction bank is more than 90 ° and less than 180 °. The printing plate according to any one of claims 1 to 9, characterized in that   11. The printing according to claim 1, wherein a notch for communicating the cell portions partitioned by the printing direction bank is formed in a part of the printing direction bank. 11. Edition.   The at least one of the said printing direction bank and the said connection bank is formed so that the height may become lower than the height of the outer peripheral surface of the said gravure roll, The any one of Claims 1-11 characterized by the above-mentioned. A printing plate according to the item.   A process of printing a conductive paste as a printing paste on a ceramic green sheet or a carrier film using the printing plate according to claim 1 to form a graphic pattern for forming an internal electrode. A method for producing a multilayer ceramic electronic component, comprising:   A printing apparatus comprising the printing plate according to claim 1.

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