JP6683232B2 - Printing plate, printing apparatus equipped with the printing plate, and method for manufacturing laminated ceramic electronic component - Google Patents

Description

  The present invention relates to a printing plate such as a gravure printing plate, a printing apparatus, and a method for manufacturing a laminated ceramic electronic component. More specifically, for example, a printing paste such as a conductive paste or a ceramic paste is used as a ceramic green sheet in a manufacturing process of an electronic component. The present invention relates to a printing plate used for printing on a printing object such as, a printing apparatus provided with the printing plate, and a method for manufacturing a laminated ceramic electronic component.

  When manufacturing a monolithic ceramic capacitor having an internal electrode for forming a capacitance or a ceramic multilayer substrate having a wiring circuit, a method of forming the internal electrode or the wiring circuit is, for example, using a printing plate for intaglio printing. A method such as a gravure printing method in which a conductive paste is printed on a ceramic green sheet is widely known.

  As a method of printing a ceramic paste or a resistance paste even when an insulating film or a resistance film is formed in the manufacturing process of electronic parts, a method of printing using a printing plate for intaglio printing as described above. Is widely applied.

By the way, as the conductive paste for forming the electrodes of the electronic component, for example, one having a viscosity of about 1 to 40 Pa · s is used.
Since the conductive paste is appropriately selected and used according to the characteristics of the electronic component that is a product, the viscosity of the conductive paste also changes depending on the type of electronic component. When printing a conductive paste having a wide viscosity range, if a printing plate having the same printing pattern is used, it is not possible to print so as to obtain an intended figure pattern (printing coating film). The reality is that it is difficult.

  That is, in order to print conductive pastes having different viscosities so that an intended graphic pattern is obtained, a printing plate having a print pattern matching the viscosity of the conductive paste is required. However, there is a problem that it is not easy to match the conductive paste and the print pattern.

  In addition, the range of viscosity of the conductive paste used for printing has expanded to a wider range of 0.01 to 80 Pa · s in recent years, and the phenomenon in which the smoothness and flatness of the printed coating film deteriorate is occurring. There is.

  As a technique related to such gravure printing, in Patent Document 1, a plurality of print patterns corresponding to a graphic pattern to be printed are formed on the outer peripheral surface of a cylindrical gravure roll, and the print pattern has a bent portion. However, there is disclosed a gravure printing plate formed by arranging a plurality of printing direction banks extending substantially in the printing direction substantially in parallel with each other.

  In Patent Document 1, as shown in FIG. 17, the angle θ of the bent portion 112 of the printing direction bank 113 forming the print pattern P1 is set to an acute angle as shown in FIG. 17, or as shown in FIG. It is disclosed that the bent portion 112 of the print pattern P1 has a curved shape. In the print pattern P1 shown in FIGS. 17 and 18, the direction indicated by arrow A is the print direction.

  However, in the case of the gravure printing plate of Patent Document 1, the transfer / threading behavior of the conductive paste in the bent portion (folded portion) 112 changes depending on the viscosity of the conductive paste, and the printing thickness, the smoothness of the coating film, etc. There is a problem in that there is variation.

  Further, in order to prevent the occurrence of a so-called saddle phenomenon in which the peripheral portion of the graphic pattern formed by printing the conductive paste is raised, as shown in FIGS. 17 and 18, a peripheral region of the print pattern P1 is formed. In this case, the width of the bank 113 in the printing direction is increased (that is, the large portion 113a is provided). However, in Patent Document 1, since the print pattern P1 is the bent pattern as described above, the printed graphic pattern However, there is a problem that the linearity of the outer circumference is deteriorated.

  Further, in the case of the gravure printing plate of Patent Document 1, in the case of forming a thin graphic pattern having a width direction dimension of, for example, 200 μm or less, which is a dimension in the direction orthogonal to the printing direction (direction indicated by arrow A), the printing direction The linearity of the side edge parallel to the direction tends to decrease.

  Further, as a conventional print pattern, for example, as shown in FIG. 19, a plurality of rectangular cells 121 are continuously arranged, and a bank 122 between the cells 121 partitions adjacent cells to form a print pattern P2. Is being considered. However, in the case of the print pattern P2 configured as described above, there is a problem that it is difficult to smoothly form a print film of a highly viscous conductive paste.

  Therefore, in order to solve such a problem, as shown in FIG. 20, on the bank 132 partitioning between the cells 131 adjacent to each other in the printing direction (direction indicated by the arrow A), alternate positions are provided along the printing direction. A print pattern P3 in which a notch 133 is formed is considered and is actually used. In the case of this print pattern P3, when the conductive paste filled in the cells 131 is printed (transferred) on a print target such as a ceramic green sheet, a thread from the cell 131 to the print target on the bank 132. Since the transfer is performed while the pulling is stably generated, it is possible to secure the smoothness of the printed graphic pattern.

  However, in the case of this print pattern P3, if the widthwise dimension (dimension in the direction orthogonal to the printing direction) of the figure pattern (printing figure) formed by printing the printing paste becomes small, the above-described cell Since it becomes impossible to realize a configuration in which a plurality of are arranged in a direction orthogonal to the printing direction, there is a problem that it is not possible to cope with a thin graphic pattern having a small dimension in the width direction.

  Further, although not particularly shown, in Patent Document 2 as well, end banks are formed at both ends in the direction orthogonal to the printing direction, and a plurality of banks are provided in the central region in the direction orthogonal to the printing direction. Arranged print patterns have been proposed. However, this printed pattern also has a problem that it cannot be applied to an elongated graphic pattern having a small dimension in the width direction.

JP, 2006-110916, A JP2012-71533A

  The present invention is to solve the above-mentioned problems. For example, when a conductive paste is printed to form a graphic pattern such as an internal electrode pattern, the dimension in the direction orthogonal to the printing direction (widthwise dimension) is particularly small. In the case of forming a graphic pattern, a printing plate capable of forming a graphic pattern having excellent linearity of side edges (sides) along the printing direction and having good flatness, and the printing plate are provided. An object of the present invention is to provide a printing apparatus and a method for manufacturing a laminated ceramic electronic component.

In order to solve the above problems, the printing plate of the present invention,
A printing plate for intaglio printing for printing a printing paste on a printing object 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 plate material,
The printing pattern projects from one side edge along the printing direction, which is the direction in which printing proceeds, toward the other side edge facing the one side edge, at a predetermined interval in the printing direction. A plurality of one-side banks arranged, and from the other-side edge portion, a plurality of other-side banks arranged at predetermined intervals in the printing direction, projecting toward the one side edge portion, It is characterized in that it is provided between the one-side bank and the other-side bank, and is provided with one printing-direction bank extending in a direction along the printing direction.

In the printing plate of the present invention, the prior SL printing direction bank, notch at a predetermined interval in the printing direction may be formed.

  Further, the bank in the printing direction may be provided with a projecting bank projecting from a predetermined position in the printing direction toward the one side bank or the other side bank.

  Further, the bank in the printing direction may be provided with a protruding bank projecting from a predetermined position in the printing direction toward the one-side bank and the other-side bank.

The dimension in the direction perpendicular to the printing direction before Symbol print pattern may 100μm or 300μm or less.

  In the printing plate of the present invention, the one-side bank projects toward the other-side edge portion, and the other-side bank projects toward the one-side edge portion in a direction orthogonal to the printing direction. Good.

  If the one bank and the other bank project toward the other side edge or the one side edge facing each other in the direction orthogonal to the printing direction, at the base end of the one bank and the other bank It is possible to continuously and stably generate the stringing of the printing paste, and to form a graphic pattern (printed pattern) with excellent linearity of the side edge along the printing direction and good flatness. It can be reliably formed.

  Further, each of the plurality of one-side banks and each of the plurality of the other-side banks may be arranged at positions facing each other in a direction orthogonal to the printing direction.

  With the above configuration, stringing of the printing paste can be stably generated, and the present invention can be made more effective.

  Further, each of the plurality of one-side banks and each of the plurality of the other-side banks may be arranged at positions that do not face each other in a direction orthogonal to the printing direction.

  In the printing plate of the present invention, each of the one-side bank and each of the other-side bank can be arranged at positions that do not face each other in the direction orthogonal to the printing direction.

  By configuring in this way, the spacing between the banks necessary for good printing, that is, the spacing between the one bank and the other bank, the spacing between the one bank, and the spacing between the other bank are sufficient. It is possible to reduce the width of the print pattern while ensuring the width. As a result, a fine graphic pattern (print graphic) having a dimension of 100 μm or less, particularly about 30 μm, which is difficult when the bank on one side and the bank on the other side are made to face each other, is difficult. It is possible to form the side edge portion while ensuring the linearity and the thickness uniformity.

  As a mode in which the one bank and the other bank are arranged so as not to face each other, each of the one bank is arranged on the other bank at a predetermined interval in the printing direction. A mode in which each bank on the other side is located in the middle and each bank on the other side is arranged at a predetermined interval in the printing direction so as to be positioned in the middle of one bank is exemplified. Can be arranged at a position deviated from the middle.

  Further, when the printing pattern is viewed in the direction along the printing direction, the tip region of the one bank may not be overlapped with the tip of the other bank.

  When the printing pattern is viewed in the direction along the printing direction, if the tip of one bank is configured not to overlap the tip of the other bank, the inside of the cell section in the direction orthogonal to the printing direction Since a cell part where neither one side bank nor the other side bank exists is formed along the printing direction, a sufficient amount of the printing paste to be filled in the cell part is ensured and a graphic pattern having a necessary thickness is formed. Can be formed.

  Further, the tip of the one bank and the tip of the other bank may be bent to the upstream side in the printing direction.

  By bending the tip of one bank and the tip of the other bank to the upstream side in the printing direction, the stringing of the printing paste at the time of transfer becomes smooth, and the graphic pattern formed by printing the printing paste. The shape can be stabilized, and the flatness (uniformity of thickness) can be improved.

  Further, the dimensions of the one side bank adjacent to each other from the base end portion toward the other side edge portion are different, and the projecting dimension toward the one side edge portion of the other side bank adjacent to each other. Can also be configured to be different.

  Different sizes from the base end toward the other side edge of the one side bank adjacent to each other, and different projection sizes toward the one side edge of the other side bank adjacent to each other. With this configuration, the stringing state of the print paste can be stabilized regardless of the properties of the print paste and the printing conditions, and highly reliable printing can be performed.

  Further, the one-side bank may have a constant interval and the other-side bank may have a constant interval.

  When the bank on one side and the bank on the other side are arranged at equal intervals in the printing direction, it is possible to stabilize the stringing state of the printing paste regardless of the position in the printing pattern. Therefore, it becomes possible to perform highly reliable printing.

  A printing apparatus of the present invention is characterized by including the printing plate of the present invention.

  In addition, the method for producing a ceramic electronic component of the present invention uses the printing plate of the present invention to print a conductive paste as a printing paste on a ceramic green sheet or a carrier film to form a graphic pattern for forming internal electrodes. It is characterized by including a step of forming.

  In the printing plate of the present invention, the printing pattern is arranged at predetermined intervals in the printing direction, projecting from one side edge portion along the printing direction toward the other side edge portion facing the one side edge portion. A plurality of one-sided banks and a plurality of other-sided banks protruding from the other-sided edge portion toward the one-sided edge portion at predetermined intervals in the printing direction, one-sided bank and the other-sided bank Since the printing paste is printed using the printing plate of the present invention, the printing paste is printed from the cell portion because it is disposed between the bank and the printing direction bank extending in the direction along the printing direction. When transferred (printed) to a printing object such as a green sheet, continuous stringing can be stably generated. As a result, a graphic pattern (printed graphic) formed by printing the printing paste has excellent linearity of side edges along the printing direction, good flatness, and a uniform thickness. It becomes possible to form a pattern.

  That is, in order to obtain a graphic pattern having excellent linearity and flatness of the side edges along the printing direction, string transfer is stably generated in each cell when the printing paste is transferred from the printing pattern. It is important to do so, according to the printing plate of the present invention, the stringing at the time of transfer of the printing paste is the base end portion of the one bank and the other bank forming the printing pattern, that is, printing. Occurring continuously at one side edge and the other side edge of the pattern, the print paste is collectively transferred from one cell to the print target in the entire print pattern. As compared with the case where a printing plate having no bank is used, continuous and stable stringing can be generated.

  Since such continuous stringing occurs stably, it is possible to obtain a graphic pattern (printed pattern) having excellent linearity of the side edge portion along the printing direction and good flatness.

  Further, since the printing apparatus of the present invention is equipped with the printing plate described above, by printing the printing paste using this printing apparatus, it is possible to efficiently form a graphic pattern having excellent shape accuracy and uniform thickness. It will be possible.

  In addition, the method for manufacturing a multilayer ceramic electronic component of the present invention uses the above printing plate to print a conductive paste as a printing paste on a ceramic green sheet or a carrier film to form a graphic pattern for forming internal electrodes. It is possible to efficiently manufacture a highly reliable monolithic ceramic electronic component having an internal electrode having a uniform thickness and a high shape accuracy.

It is a diagram for explaining the configuration of a printing apparatus according to an embodiment of the present invention. It is a figure which shows the gravure roll used for the printing apparatus shown in FIG. It is a figure which shows the printing pattern which comprises the printing plate concerning the Example of the invention relevant to this invention. It is a figure which shows the other example of the printing pattern which comprises the printing plate concerning the Example of the invention relevant to this invention. It is a figure which shows the further another example of the printing pattern which comprises the printing plate concerning the Example of the invention relevant to this invention. It is a figure which shows the further another example of the printing pattern which comprises the printing plate concerning the Example of the invention relevant to this invention. It is a figure which shows the further another example of the printing pattern which comprises the printing plate concerning the Example of the invention relevant to this invention. It is a figure which shows the further another example of the printing pattern which comprises the printing plate concerning the Example of the invention relevant to this invention. It is a figure which shows the further another example of the printing pattern which comprises the printing plate concerning the Example of the invention relevant to this invention. It is a figure which shows the further another example of the printing pattern which comprises the printing plate concerning the Example of the invention relevant to this invention. It is a figure which shows the further another example of the printing pattern which comprises the printing plate concerning the Example of the invention relevant to this invention. It is a figure which shows the printing pattern which comprises the printing plate concerning the Example of this invention. It is a figure which shows the other example of the printing pattern which comprises the printing plate concerning the Example of this invention. It is a figure which shows the further another example of the printing pattern which comprises the printing plate concerning the Example of this invention. It is a figure which shows the further another example of the printing pattern which comprises the printing plate concerning the Example of this invention. It is a figure which shows the further another example of the printing pattern which comprises the printing plate concerning the Example of this invention. It is a figure which shows the printing pattern which comprises the conventional printing plate. It is a figure which shows the other example of the printing pattern which comprises the conventional printing plate. It is a figure which shows the further another example of the printing pattern which comprises the conventional printing plate. It is a figure which shows the further another example of the printing pattern which comprises the conventional printing plate.

  Before describing the printing plate of the invention, reference examples of the invention related to the invention will be described below, and then examples of the invention will be described in detail. In the following, a printing plate for intaglio printing (gravure printing plate) provided on the surface of a gravure roll used for gravure printing will be described as an example.

  1 is a diagram showing a schematic configuration of a gravure printing apparatus using a printing plate according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a gravure roll constituting the gravure printing apparatus of FIG.

  The gravure printing device 50 prints a conductive paste (printing paste) 52 for forming an internal electrode on a ceramic green sheet 55 in a manufacturing process of an electronic component such as a laminated ceramic capacitor having a narrow internal electrode, This is a printing apparatus used to form an electrode pattern (graphic pattern) 56.

  As shown in FIGS. 1 and 2, this printing device 50 includes a gravure roll 51 having a plurality of printing patterns P on its surface, a paste tank 57 for containing a conductive paste 52, and a surplus attached to the gravure roll 51. Scraping means 53 for scraping off the conductive paste 52, back roll (impression cylinder) 54, and transport means such as a transport roll for transporting the ceramic green sheet (print object) 55 in the direction of arrow B (not shown). ) And.

  Then, the ceramic green sheet 55 is passed between the gravure roll 51 and the back roll 54, and the conductive paste 52 held by the print pattern P on the surface of the gravure roll 51 is transferred to the surface of the ceramic green sheet 55. The internal electrode pattern 56 can be printed on the ceramic green sheet 55.

The printing plate 10 according to this embodiment is formed by using a cylindrical gravure roll 51 as a plate material and disposing a plurality of printing patterns P on the outer peripheral surface of the gravure roll 51.
The printing direction of the printing paste 56 is the direction opposite to the conveying direction of the ceramic green sheet 55 (the direction indicated by arrow B in FIG. 1) (the direction indicated by arrow A in FIGS. 1 and 3).

[Reference Example 1]
As shown in FIG. 3, the print pattern P includes one side edge portion 12a of the pair of side edge portions along the printing direction (direction indicated by the arrow A) to the other side edge portion facing the one side edge portion 12a. It is provided with a plurality of one-side banks 21 projecting toward 12b and a plurality of other-side banks 22 projecting from the other side edge 12b toward the one side edge 12a. Then, the area excluding the area occupied by the one-side bank 21 and the other-side bank 22 is configured to be the cell portion 23 that is an area filled with the printing paste 52 (see FIG. 1).

  The printing plate 10 has a dimension (width) in the direction orthogonal to the printing direction of 50 μm or more and 200 μm or less and a dimension (length) in the printing direction as a graphic pattern 56 to be formed on a printing object such as a ceramic green sheet. It is preferably used when a rectangular graphic pattern 56 of 500 μm or more is printed.

The print pattern P that constitutes the printing plate 10 has a width W1 of 50 μm or more and 200 μm or less, which is a dimension in the direction orthogonal to the printing direction, corresponding to the width of the above-described graphic pattern 56. It is preferable that the length L1 be 500 μm or more.
The depth of the cell portion 23 of the print pattern P is preferably 5 μm or more and 50 μm or less.

  Further, in the printing pattern P forming the printing plate 10, the one-side bank 21 is orthogonal to the printing direction, and the other-side bank 22 is toward the one-side edge portion 12a. While projecting in the direction, each of the plurality of one-side banks 21 and each of the plurality of the other-side banks 22 are arranged at positions facing each other.

  Further, the plurality of one-side banks 21 projecting from the one-side edge 12a toward the other-side edge 12b and the plurality of other-side banks 22 projecting from the other-side edge 12b toward the one-side edge 12a. Are arranged at regular intervals (at a predetermined pitch) in the printing direction.

  Further, the length of one bank 21 (the dimension in the direction orthogonal to the printing direction) is preferably 30% or more and 200% or less of the arrangement pitch of the one bank 21, and the length of the other bank 22. Is preferably 30% or more and 200% or less of the arrangement pitch of the other bank 22.

  In addition, specifically, the width of the one-side bank 21 and the other-side bank 22 is, for example, 3 to 30 μm, the length is 10 μm at the shortest, and the longest is ½ to 15 μm of the width of the graphic pattern 56. It is preferable to set the value to

  Further, the arrangement pitch of the one-side bank 21 and the other-side bank 22 adjacent to each other in the printing direction is a value obtained by adding 30 μm to the minimum width of the one-side bank 21 and the other-side bank 22 and a maximum value of 100 μm. It is preferably in the range of.

  The distance between the tip portions 21a and 22a of the one-side bank 21 and the other-side bank 22 that face each other (the distance between the tip portions 21a and 22a) is preferably 30 μm or more.

  Further, the distance between the print start side end (the left side end in FIG. 3) of the print pattern P and the one of the one side bank 21 or the other side bank 22 closest to the print start side end is the one side bank. It is preferable that the pitch is equal to or smaller than the arrangement pitch of 21 and the bank 22 on the other side.

  Further, the distance between the end of the print pattern P on the print end side (the right end in FIG. 3) and the one of the one bank 21 or the other bank 22 closest to the end end of the print is the one bank. It is preferable to be half (1/2) or less of the arrangement pitch of 21 and the other bank 22.

  By using the printing plate 10 of Reference Example 1 having the above configuration, the dimension (width) in the direction orthogonal to the printing direction is 50 μm to 200 μm, and the linearity of the side edge portion (side) along the printing direction is improved. It is possible to form the graphic pattern 56 (FIG. 1) which is excellent and has good flatness.

  When the printing paste (conductive paste) 52 is printed on the ceramic green sheet 55 using the printing plate 10 having the above configuration (see FIG. 1), the one-side bank 21 and the other-side bank 22 are , The printing paste 52 is printed (transferred) on the ceramic green sheet 55, and the printing paste 52 in the cell 23 (FIG. 3) is transferred to the ceramic green sheet 55 through the bank 21 on one side and the bank 22 on the other side. Then, the printing paste 52 is sucked up from the cell portion 23 at the same time.

  The printing paste 52 transferred along the one-side bank 21 and the other-side bank 22 is the one side edge portion 12a and the other side edge portion of the print pattern P when the printing plate 10 and the ceramic green sheet 55 are separated. Threading in the printing direction is generated at the edge of 12b. As a result, a larger amount of the printing paste 52 is linearly transferred on the one side edge portion 12a and the other side edge portion 12b of the print pattern P.

  Further, after the printing (transferring) to the ceramic green sheet 55, the leveling proceeds, so that the linearity of the side edge portion of the graphic pattern 56 along the printing direction is improved.

Further, the one-side bank 21 and the other-side bank 22 have a constant arrangement pitch and are arranged at equal intervals, so that the transfer amount of the printing paste 52 is stable and the smoothness of the graphic pattern 56 is high.
The distance between the one-side bank 21 and the other-side bank 22 and the distance between the one-side bank 21 and the other-side bank 22 are preferably 30 μm or more. If this distance is less than 30 μm, the stringing of the printing paste 52 during transfer becomes unstable and the printability deteriorates.

  Although the transfer amount and the leveling property change depending on the physical properties of the printing paste 52, in the printing plate of this reference example 1, the lengths of the one-side bank 21 and the other-side bank 22 are adjusted according to the physical properties of the printing paste 52. A smoother graphic pattern 56 can be obtained by adjusting the pitch and the arrangement pitch.

  Further, it is important that the upper surface of the graphic pattern 56 formed by printing the printing paste 52 is flat, and that the rising edge of the peripheral portion (edge portion) is steep. By using the printing plate 10 of Reference Example 1 and controlling the patterns of the bank 21 on the one side and the bank 22 on the other side so that the coating film thickness at the edge portion becomes thicker than the center of the graphic pattern 56, Thus, it is possible to obtain a graphic pattern having a sharp rising edge (edge portion).

  If the peripheral portion (edge portion) of the graphic pattern is gentle and not steep, a region having a certain thickness or less in the graphic pattern may not perform the intended function, which is not preferable.

[Reference Example 2]
FIG. 4 is a diagram showing a printing plate according to another embodiment (reference embodiment 2) of the invention related to the present invention.
As shown in FIG. 4, the printing pattern P constituting the printing plate 10 of the reference example 2 has one end bank configured such that the leading end portions 21a and 22b are bent to the upstream side (printing start side) in the printing direction. 21 and a bank 22 on the other side.

  The bending angles of the tip portions 21a, 22a of the one-side bank 21 and the other-side bank 22 are preferably in the range of 0 ° to 90 ° with respect to the direction orthogonal to the printing direction.

  Also in the case of the print pattern P of FIG. 4, it is preferable that the distance between the one bank 21 and the other bank 22 and the distance between the one bank 21 and the other bank 22 are 30 μm or more. If this distance is less than 30 μm, the stringing of the printing paste during transfer becomes unstable and the printability deteriorates.

  As in this reference example 2, the tip portion 21a of the one-side bank 21 and the tip portion 22a of the other-side bank 22 are bent to the upstream side (printing start side) in the printing direction to fill the cell portion 23 with the printing paste. When the image is transferred to the ceramic green sheet 55, the length of the transfer trigger can be increased to increase the transfer amount.

  Further, the bent one-side bank 21 and the other-side bank 22 are connected to the base ends of the one-side bank 21 and the other-side bank 22, that is, the side edges of the one-side bank 21 and the other-side bank 22. In addition, it is possible to smoothly move the string of the printing paste, stabilize the transfer at the edge portion (side edge portion along the printing direction) of the graphic pattern, and improve the linearity.

[Reference Example 3]
FIG. 5 is a diagram showing a printing plate according to still another embodiment (Reference Example 3) of the invention related to the present invention.
In the printing pattern P constituting the printing plate 10 of the reference example 3, the tip 21a of the bank 21 on one side and the tip 22a of the bank 22 on the other side constituting the printing pattern P of the example 1 described above are formed. In between, a single recess (groove) 24 having a deeper depth than the other regions of the cell portion 23 is arranged in the direction along the printing direction. The depth of the recess (groove) 24 is preferably not less than 1.5 times and not more than 3 times the depth of other regions of the cell part 23.

  In the case of the print pattern of Reference Example 1 described above, when the width of the graphic pattern is 100 μm or less, the volume of the cell portion 23 becomes small, the transfer amount of the print paste becomes small, and the film thickness of the print pattern (print graphic) becomes small. When the width of the graphic pattern exceeds 100 μm, the thickness of the coating film in the central portion tends to be insufficient as compared with the film thickness in the edge portion. However, as in Reference Example 3, the cell It is possible to increase the transfer amount of the printing paste from the cell portion 23 by forming a concave portion (groove) 24 having a deeper depth than the other areas of the cell portion 23 in the center of the width direction of the portion 23. When the width of the graphic pattern is 100 μm or less, it is possible to prevent the film thickness of the print pattern from becoming thin, and when the width of the graphic pattern exceeds 100 μm, the film thickness in the center of the graphic pattern is insufficient. It is possible to eliminate.

[Reference Example 4]
FIG. 6 is a diagram showing a printing plate according to still another embodiment (Reference Example 4) of the invention related to the present invention.
In the printing pattern P constituting the printing plate 10 of the reference example 4, the tip 21a of the one-side bank 21 and the tip 22a of the other-side bank 22 constituting the printing pattern P of the above-mentioned reference example 2 are formed. In between, a single recess (groove) 24 having a deeper depth than the other regions of the cell portion 23 is arranged in the direction along the printing direction. The depth of the recess (groove) 24 is preferably 1.5 times or more and 3 times or less that of the cell part 23.

  In the case of the print pattern of Reference Example 2 described above, when the width of the graphic pattern is 100 μm or less, the volume of the cell portion 23 becomes small, the transfer amount of the print paste becomes small, and the film thickness of the print pattern tends to become thin. If the width of the graphic pattern exceeds 100 μm, the thickness of the coating film in the central portion tends to be insufficient as compared with the film thickness in the edge portion. However, as in Reference Example 4, the width of the cell portion 23 is By forming the concave portion (groove) 24 having a deeper depth than the other regions of the cell portion 23 in the center of the direction, it is possible to increase the transfer amount of the printing paste from the cell portion 23. When the width of the pattern is 100 μm or less, the thickness of the printed pattern is prevented from becoming thin, and when the width of the graphic pattern exceeds 100 μm, the problem of insufficient film thickness at the center of the graphic pattern is solved. Door is possible.

[Reference Example 5]
FIG. 7 is a diagram showing a printing plate according to still another embodiment (Reference Example 5) of the invention related to the present invention.
In the printing pattern P constituting the printing plate 10 of the reference example 5, the tip 21a of the bank 21 on one side and the tip 22a of the bank 22 on the other side which constitute the printing pattern P of the example 1 described above are formed. A plurality of recesses 25 having a depth deeper than the other regions of the cell portion 23 are formed in each of the spaces. The depth of each recess 25 is preferably 1.5 times or more and 3 times or less that of the cell portion 23.

Also in the printing plate 10 of the reference example 5, the same effect as in the case of the reference example 3 can be obtained.
Further, although not particularly shown, cells are provided between the bent tip portion 21a of the one-side bank 21 and the bend tip portion 22a of the other-side bank 22 that constitute the print pattern P of the above-described reference example 2. It is also possible to adopt a configuration in which a plurality of concave portions 25 having a depth deeper than the other regions of the portion 23 are formed. Also in that case, the same effect as the case of the above-mentioned reference example 4 can be acquired.

[Reference Example 6]
FIG. 8 is a diagram showing a printing plate according to still another embodiment of the invention related to the present invention.
In the printing pattern P constituting the printing plate 10 of Reference Example 6, one bank 21 is directed toward the other side edge 12b, and the other bank 22 is directed toward the one side edge 12a in the printing direction. Although projecting in a direction orthogonal to each other, each of the plurality of one-side banks 21 and each of the plurality of the other-side banks 22 are arranged at positions that do not face each other.

  That is, in the reference example 6, the arrangement pitch of each of the plurality of one-side banks 21 and the arrangement pitch of each of the other-side banks 22 are the same, but the one-side bank 21 and the other-side bank 22 are the same. Are arranged at positions shifted by 1/2 pitch.

  As described above, in the printing plate 10 of the reference example 6, the one-side bank 21 and the other-side bank 22 are arranged at positions displaced by 1/2 pitch, and are arranged at positions not facing each other. Therefore, the distance between the one-side bank 21 and the other-side bank 22 is secured to be 30 μm or more, and the distance between the tip 21a of the one-side bank 21 and the other-side edge 12b and the tip of the other-side bank 22 are secured. It is possible to reduce the size of the print pattern P in the width direction to, for example, about 60 μm while ensuring a distance of 22 μm or more and one side edge portion 12 a of 30 μm or more, and to print a narrow graphic pattern. It is possible to provide a printing plate with excellent compatibility.

  By using the printing plate 10 of Reference Example 6, it was not always easy to form when using the printing plate of Reference Example 1, for example, a width of about 30 μm. It is possible to form a thin graphic pattern having excellent linearity at the side edge portion along the printing direction.

[Reference Example 7]
FIG. 9 is a diagram showing a printing plate according to still another embodiment of the invention related to the present invention.
The printing pattern P constituting the printing plate 10 of Reference Example 7 is configured such that the tip 21a of the one-side bank 21 overlaps with the tip portion 22a of the other-side bank 22 when viewed in the direction along the printing direction. ing. That is, in the printing plate 10 of Example 7, the lengths of the one bank 21 and the other bank 22 (dimensions in the direction perpendicular to the printing direction) are 1/2 of the widthwise dimension of the printing pattern P. The tip end portion 21a of the one-side bank 21 enters the position closer to the other side edge portion 12b than the line connecting the tip end portions 22a of the other-side bank 22 and the tip portion 22a of the other-side bank 22 is It extends to a position closer to the one side edge 12a than the line connecting the tip end 21a of each one side bank 21.

  Further, the arrangement pitch of the one-side bank 21 and the other-side bank 22 is configured to be larger than that in the case of the reference example 6, for example. As a result, even when the lengths of the bank 21 on one side and the bank 22 on the other side are formed to be longer than half the dimension of the print pattern P in the width direction, a sufficient distance (interval) between each bank is secured. It becomes possible to do. In the case of the printing plate of Reference Example 7, for example, it is possible to cope with the case where a thin graphic pattern having a width of about 50 μm is formed.

  In the case of the printing plate 10 of Reference Example 7, the arrangement pitch of the one-side bank 21 and the other-side bank 22 in the printing pattern P is large, and the cell is compared with the ratio of the one-side bank 21 and the other-side bank 22. Since the proportion of the portion 23 is large, it is possible to obtain a graphic pattern having excellent flatness.

[Reference Example 8]
FIG. 10 is a diagram showing a printing plate according to still another embodiment (Reference Example 8) of the invention related to the present invention. In the printing pattern P constituting the printing plate 10 of this reference example 8, the arrangement pitch of the one bank 21 and the other bank 22 of the above-mentioned reference example 7 is set to the interval between the banks (for example, one bank 21 and the distance between the tip portions 21a, 22a of the bank 22 on the other side) is reduced within a range in which 30 μm or more is secured.

  With this configuration, when the printing paste is transferred, it is possible to continuously generate stringing between the one-side bank 21 and the other-side bank 22 that are alternately arranged. As a result, for example, when a thin graphic pattern having a width of about 60 μm is formed, it is possible to form a stable and smooth graphic pattern with excellent linearity of the side edge portion along the printing direction. It is possible to give the graphic pattern a required thickness.

  Further, as in Reference Example 7 described above, when the arrangement pitch of the one bank 21 and the other bank 22 is large, the linearity of the side edge portion along the printing direction tends to deteriorate, but this reference embodiment As in the printing plate 10 of Example 8, the linearity of the side edges along the printing direction can be improved by reducing the arrangement pitch of the one bank 21 and the other bank 22.

[Reference Example 9]
FIG. 11 is a diagram showing a printing plate according to still another embodiment (Reference Example 9) of the invention related to the present invention.
The printing pattern P constituting the printing plate 10 of Reference Example 9 is provided with a short-sided embankment 22 at a position opposed to a long-sided embankment 21 having a length in the direction orthogonal to the printing direction. At the same time, a long-sided embankment 22 is provided at a position facing each short-sided embankment 21. In other words, one short-sided bank 21 is provided at a position facing the other-sided bank 22 having a long length, which is the dimension in the direction orthogonal to the printing direction, and the other-sided banks 22 having short lengths are provided. A long one-sided bank 21 is provided at a position facing each other.
The printing plate 10 of Reference Example 9 is also configured to secure an interval between the banks of 30 μm or more.

  In the case of the printing plate 10 of the reference example 9, the one-side bank 21 and the other-side side of the printing pattern P are not significantly reduced with respect to the ratio of the one-side bank 21 and the other-side bank 22. The arrangement pitch of the banks 22 can be reduced, and the linearity of the side edges of the print pattern along the printing direction can be improved.

Hereinafter, examples of the present invention will be described in detail.
12 to 16 are views showing a printing plate according to the embodiment of the present invention.

  The printing plate 10 of FIG. 12 has one printing direction that communicates between the one-side bank 21 and the other-side bank 22 that form the printing pattern P in the direction along the printing direction from the printing start side to the printing end side. The bank 26 is formed. This print pattern P is a print pattern suitable for printing a relatively large graphic pattern having a width of 100 μm or more and 300 μm or less, which is a dimension in the direction orthogonal to the printing direction.

  That is, in a relatively wide print pattern having a width of 100 or more and 300 μm or less, if only one bank 21 and the other bank 22 are provided, transfer proceeds only in the peripheral portion of the figure, and the thickness of the central portion of the print pattern ( The coating film thickness) tends to be insufficient, but by arranging the bank 26 in the printing direction between the bank 21 on one side and the bank 22 on the other side, the transfer trigger in the central part increases and the central part of the printing pattern The lack of thickness is resolved.

  In the print pattern P of FIG. 12, the shortest distance between the bank 26 in the printing direction and the one bank 21 and the other bank 22 is 30 μm or more, and the distance between the tips of the one bank 21 and the other bank 22 is 70 μm or more. It is preferable that

  Further, the printing plate 10 of FIG. 13 extends in the printing direction between the one-sided bank 21 whose tip portion 21a is bent upstream in the printing direction and the other-side bank 22 whose tip portion 22b is bent upstream in the printing direction. In the direction, one printing direction bank 26 communicating from the printing start side to the printing end side is formed. This print pattern P is a print pattern suitable for printing a relatively large graphic pattern having a width of 100 μm or more and 300 μm or less, which is a dimension in the direction orthogonal to the printing direction.

  That is, in a relatively wide print pattern having a width of 100 to 300 μm, if only one bank 21 and the other bank 22 are arranged, transfer proceeds only in the peripheral portion of the figure, and the thickness of the central portion of the print pattern ( The coating film thickness) tends to be insufficient, but by arranging the bank 26 in the printing direction between the bank 21 on one side and the bank 22 on the other side, the transfer trigger in the central part increases and the central part of the printing pattern The lack of thickness (coating thickness) is resolved.

  In the printing pattern P of FIG. 13 as well, the shortest distance between the bank in the printing direction and the one bank 21 and the other bank 22 is 30 μm or more, and the distance between the tips of the one bank 21 and the other bank 22 is 70 μm or more. It is preferable that

  The printing plate 10 of FIG. 14 has notches (slits) at predetermined intervals in the printing direction on one printing direction bank 26 that communicates from the printing start side to the printing end side in the printing pattern P of FIG. ) 27 is formed.

  By configuring like the print pattern P of FIG. 14, it is possible to increase the proportion of the cell portion 23 in the print pattern P and to secure the transfer amount of the print paste, so that the print pattern P at the center of the coating film can be secured. It is possible to prevent a decrease in coating thickness. That is, when a series of printing direction bank 26 without cutouts is provided, the proportion of the cell portion 23 becomes small and the transfer amount of the printing paste to the center of the printing pattern becomes insufficient. When the print pattern P is used, such a problem can be solved.

The printing plate 10 of FIG. 15 is suitable for use when the distance between the tips of the one bank 21 and the other bank 22 is 100 μm or more. In the printing pattern P constituting the printing plate 10, the short-sided bank 22 on the other side is short at the position facing the long-sided bank 21 on the long side which is the dimension in the direction orthogonal to the printing direction. The other long side bank 22 is provided at a position facing the one side bank 21 (that is, the one side bank 21 having a short length is provided at a position facing the other side bank 22 having a long length, A long one side bank 21 is provided at a position facing the other short side bank 22) and communicates between the one side bank 21 and the other side bank 22 from the printing start side to the printing end side. A bank (bank in the printing direction) 26 is formed. Then, in the region of the printing direction bank 26 facing the short one side bank 21 or the short one side bank 22, the short one side bank 21 or the short side other bank 22 is projected. A projecting bank (one-side projecting bank) 26a is provided.
In this print pattern P as well, it is preferable to secure an interval between the banks of 30 μm or more.

  In the case of forming a comparatively wide graphic pattern up to about 300 μm like the printing plate 10 of FIG. 15, the printing direction bank 26 having a configuration including the protruding bank (one side protruding bank) 26a as described above is provided. By arranging, the transfer trigger of the printing paste is increased by the protruding bank 26a, the transfer amount is increased, and the shortage of the thickness of the printing pattern is eliminated.

Further, the printing pattern P forming the printing plate 10 of FIG. 16 has a distance between the tips of the one bank 21 and the other bank 22 of 100 μm, as in the case of the printing pattern P of the printing plate 10 of FIG. It is suitable for use in the above cases. In the printing pattern P that constitutes the printing plate 10, the one-side bank 21 and the other-side bank 22 that form the printing pattern P and have the same length, which is the dimension in the direction orthogonal to the printing direction, are arranged at positions facing each other. A bank 26 (a bank in the printing direction) that communicates from the printing start side to the printing end side is formed between the one side bank 21 and the other side bank 22. A protruding bank (both sides protruding banks) 26b protruding toward the one-side bank 21 and the other-side bank 22 is arranged in a region of the printing-direction bank 26 that faces the one-side bank 21 and the other-side bank 22. ing.
In this printed pattern as well, it is preferable to secure an interval of 30 μm or more between each bank.

In the case of forming a comparatively wide graphic pattern up to about 300 μm like the printing plate 10 of FIG. 16, the printing direction bank 26 having the above-mentioned configuration with the protruding bank (both sides protruding bank) 26b is formed. By arranging, the trigger for transferring the printing paste is increased by the protruding bank 26b, the transfer amount is increased, and the shortage of the thickness of the printing pattern (coating film) is eliminated.
The printing plate of the present invention may have a configuration in which a plurality of characteristic configurations of the above-described embodiments are combined.

  Further, in the above embodiment, the case of printing the conductive paste for forming the internal electrode pattern for the monolithic ceramic capacitor has been described as an example, but the present invention, in the case of manufacturing various electronic components other than the monolithic ceramic capacitor, It can be widely applied when forming an electrode pattern.

  Further, the printing plate of the present invention is not limited to the conductive paste, and can be applied to the case of printing various pastes (printing pastes) such as ceramic paste, dielectric paste, and resistance paste.

  Further, in the above-mentioned embodiment, an example in which a gravure roll is used as the printing plate is shown, but it is also possible to use a planographic printing plate in which a printing pattern is formed on a flat plate material.

Further, the printing plate of the present invention can be used in general intaglio printing including offset printing.
For example, when carrying out the offset printing method, an intermediate transfer member (for example, a blanket roll) is arranged so as to come into contact with both the printing plate and the substrate, and the printing paste filled in the printing pattern of the printing plate is used. It is also possible to transfer to an object to be printed via an intermediate transfer member.

  The present invention is not limited to the above embodiments in other respects, and various applications and modifications can be made within the scope of the invention.

10 Printing Plate 12a One Side Edge 12b Other Side Edge 21 One Side Bank 21a One Side Bank Tip 21b One Side Bank Base End 22 Another Side Bank 22a Other Side Bank Tip 22b The Other Side Bank Base End Part 23 Cell part 24 One groove-shaped recess (groove)
25 Multiple recesses 26 Printing direction bank 26a Projected bank (projected bank on one side)
26b projecting bank (both sides projecting bank)
27 Notches (slits)
50 Gravure printing device 51 Gravure roll 52 Conductive paste (printing paste)
53 Scraping means 54 Back roll 55 Ceramic green sheet (print target)
56 Figure pattern (printed figure)
57 Paste tank A Printing direction B Ceramic green sheet conveying direction P Printing pattern

Claims (14)

A printing plate for intaglio printing for printing a printing paste on a printing object 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 plate material,
The printing pattern projects from one side edge along the printing direction, which is the direction in which printing proceeds, toward the other side edge facing the one side edge, at a predetermined interval in the printing direction. A plurality of one-side banks arranged, and from the other-side edge portion, a plurality of other-side banks arranged at predetermined intervals in the printing direction, projecting toward the one side edge portion, A printing plate comprising: one bank in a printing direction, which is disposed between the one bank and the other bank and extends in a direction along the printing direction. Wherein the printing direction bank is printing plate according to claim 1, characterized in that notches at predetermined intervals in the printing direction is formed. Wherein the printing direction bank is printing plate according to claim 1, characterized in that protruding bank that projects toward the one side bank or the other side bank from the predetermined position in the printing direction is disposed . The printing direction bank is printing plate according to claim 1, characterized in that protruding bank that projects toward the one side bank and the other side bank from the predetermined position in the printing direction is disposed. Wherein the dimension in the direction perpendicular to the printing direction, the printing plate according to any one of claims 1 to 4, characterized in that at 100μm or more 300μm following the print pattern. 2. The one-side bank projects toward the other-side edge portion, and the other-side bank projects toward the one-side edge portion in a direction orthogonal to the printing direction, respectively. The printing plate according to any one of to 5 . The plurality of the one-side banks and each of the plurality of the other-side banks are arranged at positions facing each other in a direction orthogonal to the printing direction. The printing plate according to any one of to 6 . Each of the plurality of one-side banks and each of the plurality of other-side banks are arranged at positions that do not face each other in a direction orthogonal to the printing direction. The printing plate according to any one of 1 to 6 . When the printing pattern is viewed in the direction along the printing direction, the tip region of the one bank is configured not to overlap the tip of the other bank. The printing plate according to any one of 8 . The printing plate according to any one of claims 1 to 9 , wherein the tip of the one bank and the tip of the other bank are bent upstream in the printing direction. The one end of the one bank adjacent to each other has a different size from the base end toward the other edge, and the other end of the other bank adjacent to each other is adjacent to the one end. The printing plate according to any one of claims 1 to 10 , wherein the printing plate has different dimensions. The printing plate according to any one of claims 1 to 12 , wherein the one-side bank has a constant interval and the other-side bank has a constant interval. Printing apparatus characterized by comprising a printing plate according to any one of claims 1 to 12. Using the printing plate according to any one of claims 1 to 12 by printing a conductive paste as the printing paste on a ceramic green sheet or the carrier film on the step of forming a graphic pattern for an internal electrode formed A method of manufacturing a monolithic ceramic electronic component, comprising:

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