JP2003297667A - Gravure printing plate and method for manufacturing laminated electronic part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gravure printing plate which has a superior straightness in an outer circumference of a printed matter and can produce the printed matter having a printing surface without occurrence of pin holes, and a method for manufacturing laminated electronic parts by use of the gravure printing plate. <P>SOLUTION: A plurality of quadrangle-shaped dents 21a, 21c are disposed across a vertical partition wall 22 in a widthwise direction of a gravure roll, to constitute lateral columns 21-I, 21-II and 21-III of the quadrangle-shaped dents. A plurality of the lateral columns of the quadrangle-shaped dents are disposed in a circumferential direction of the roll across a straight lateral partition wall 23 in parallel with the widthwise direction of the roll. In the lateral columns of the quadrangle-shaped dents adjacent to each other, the vertical partition wall 22 is formed at a different position in the widthwise direction of the roll. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing plate used for gravure printing, and more particularly to a gravure printing plate capable of performing rectangular printing with high linear accuracy on the outer peripheral edge without causing pinholes. . The present invention also relates to a method for manufacturing a laminated electronic component using the gravure printing plate.

[0002]

2. Description of the Related Art Conventionally, a gravure printing method is well known as a printing method. In order to manufacture multilayer electronic components such as multilayer capacitors, multilayer inductors, multilayer substrates, and LC chips,
A method of forming an internal electrode by printing a conductive paste on a ceramic green sheet or another support by a gravure printing method is disclosed in JP-A-3-108307 and JP-A-6-
No. 316174, JP-A-9-129503,
It is disclosed in JP-A-9-129504.

Printing of the conductive paste by the gravure printing method is performed as follows. FIG. 1 is a diagram showing an outline of a gravure printing method, and FIG. 2 is a perspective view of a gravure roll. Referring to FIGS. 1 and 2, the gravure roll (1) has a cylindrical shape, and a plurality of gravure printing plates (8) are formed in a predetermined array on the surface thereof. The gravure printing plate (8) has a rectangular concave shape that matches a desired electrode printing shape. The gravure roll (1) is rotated in the direction of the arrow in the figure, the conductive paste (3) is supplied from the paste tank (2) to the gravure printing plate (8), and the excess conductive paste is removed by the doctor blade (4).
Is scraped off by. The doctor blade (4) is usually
It is arranged so as to scrape off the conductive paste while swinging in the width direction of the gravure roll (1). For the conductive paste filled in the gravure printing plate (8), the ceramic green sheet (6) was gravure roll (1) and back roll.
(5) Ceramic green sheet when passing between
(6) Transcribed on. In this way, the rectangular conductive paste (7) corresponding to the shape of the gravure printing plate (8) is printed on the ceramic green sheet (6).

By the way, if the entire area of the gravure printing plate (8) is composed of a single recess, the conductive paste cannot be transferred into an accurate rectangular shape. Therefore, conventionally, each gravure printing plate (8) is formed as an aggregate of a large number of recesses.

For example, FIG. 3A is a plan view showing a conventional gravure printing plate, and FIG. 3B is an enlarged view of part A in FIG. 3A. In the gravure printing plate (11) of FIG. 3, a large number of partition walls (11c) are provided which are separated by a straight partition wall (11b) in the vertical direction (roll circumferential direction) and a straight partition wall (11c) in the horizontal direction (roll width direction). The rectangular recesses (11a) are arranged in a matrix. The vertical partition (11b) and the horizontal partition (1
The height of 1c) is formed at the same height position as the surface of the gravure printing plate, that is, on the same plane as the outer surface of the gravure roll.

When this gravure printing plate (11) is used, the conductive paste is supplied to each recess (11a), and the excess conductive paste is scraped off by the doctor blade (4) in the direction of the arrow in the figure to form each recess ( The conductive paste filled in 11a) is transferred onto the support. After the transfer, it is desired that the conductive paste is leveled, and the conductive paste is printed in a rectangular shape that substantially matches the shape of the printing plate (11).

[0007] In the gravure printing plate (11) having the recess arrangement shown in Fig. 3, since the outer peripheral portion of the printing plate (11) is formed by the rectangular recess (11a), the outer peripheral edge corresponding to the shape of the printing plate (11). It is easy to obtain the print shape. However, since the vertical partition wall (11b) is continuously formed linearly in the roll circumferential direction,
Since the vertical partition wall (11b) does not originally have the conductive paste, pinholes and large vertical coating gaps easily occur. That is, referring to FIG. 3B, when the movement of the paste on the support at the time of leveling after the transfer of the conductive paste is indicated by an arrow, the portion where the vertical partition wall (11b) and the horizontal partition wall (11c) intersect ( 11x) does not easily transfer the paste and pinholes are likely to occur. In addition, since the vertical partition (11b) portion originally does not have a conductive paste, a large coating dropout that is vertically connected easily occurs. Therefore, when a laminated electronic component is manufactured using this as an internal electrode, variations in capacitance and defective withstand voltage are likely to occur.

Further, for example, FIG. 4 (a) is a plan view showing another conventional gravure printing plate, and FIG. 4 (b) is a plan view.
(A) It is an enlarged view of the B section in a figure. In the gravure printing plate (12) of FIG. 4, a large number of diamond-shaped recesses (12a) are arranged at regular pitches in the vertical and horizontal directions, and recesses (12a) in every other column are four recesses (12a) on both sides. ) Is located in the center. That is, these diamond-shaped recesses (12a) are linear partition walls (12a) extending from the upper left to the lower right in the figure.
It is separated by b) and a straight bulkhead (12c) running from upper right to lower left. Then, in order to form a rectangular plate shape, a triangular recess (12d) is arranged on the outer peripheral portion of the printing plate (12). The height of each partition wall (12b) (12c) is at the same height as the surface of the gravure printing plate.

In the gravure printing plate (12) having the concave portion array shown in FIG. 4, paste transfer from the triangular concave portion (12d) on the outer peripheral portion occurs at the time of leveling after transfer of the conductive paste with reference to FIG. 4 (b). Poorly, it is difficult to obtain a printed shape of the outer peripheral edge corresponding to the shape of the printing plate (12). Also, the partition (12b) and the partition (12
The paste does not easily transfer to the part (12x) where c) intersects, and pinholes are likely to occur. Therefore, when a laminated electronic component is manufactured using this as an internal electrode, variations in capacitance and defective withstand voltage are likely to occur.

Japanese Unexamined Patent Publication (Kokai) No. 6-316174 discloses a gravure printing plate having a frame-shaped recess corresponding to the outer peripheral edge of an internal electrode. However, in the printing plate described in the same item, the internal recesses and partition walls other than the outer peripheral portion have the same structures as those of the above-mentioned conventional ones, and therefore pinholes and large coating omissions are likely to occur. Therefore, when a laminated electronic component is manufactured by using these as internal electrodes, capacity variations and breakdown voltage defects are likely to occur.

Further, Japanese Patent Laid-Open No. 9-129503,
Japanese Unexamined Patent Publication No. 9-129504 discloses a gravure printing plate comprising a set of circular and diagonal recesses. However, with these printing plates, there are problems in the linear accuracy of the outer peripheral edge, and there is also the problem of pinholes. Therefore, when a laminated electronic component is manufactured by using these as internal electrodes, capacity variations and breakdown voltage defects are likely to occur.

[0012]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a gravure printing plate which is excellent in the linear accuracy of the outer peripheral edge of a printed matter and which can produce a printed matter without pinholes on the printing surface. is there. Further, the object of the present invention is to
It is to provide a method for manufacturing a laminated electronic component using the gravure printing plate.

[0013]

Means for Solving the Problems As a result of intensive investigations by the present inventors, among the vertical and horizontal partition walls separating a large number of rectangular recesses, the vertical partition walls, that is, the scraping of the printing material by a doctor blade is performed. The present invention has been completed based on the finding that the above problems can be solved by not arranging the partition walls in the substantially circumferential direction of the roll, which is the direction of the roll, continuously in a straight line.

That is, the present invention is a gravure printing plate comprising a plurality of concave portions arranged by being separated by partition walls having the same height as the outer peripheral surface of the gravure roll, wherein a plurality of rectangular concave portions are formed in the roll width direction. A plurality of rows of square recesses are formed by being separated from each other by vertical partition walls in a substantially circumferential direction, and the rows of the square recesses are separated by straight horizontal partition walls parallel to the roll width direction and are arranged in the circumferential direction of the roll. It is a gravure printing plate in which the vertical barrier ribs are formed in different positions in the roll width direction in the rows of the rectangular recesses that are arranged in rows and are adjacent to each other.

In the present invention, the "quadrangle" of the rectangular recess is at least one of two sets of two opposing sides.
A quadrangle whose two opposite sides of the set are parallel to each other, specifically,
Includes rectangles (rectangles, squares), parallelograms (sometimes diamonds), and trapezoids. In the case of a trapezoid, the quadrangular recesses are arranged so that the two opposing parallel sides are parallel to the roll width direction.

In the present invention, the width of the vertical barrier ribs and / or the width of the linear horizontal barrier ribs is preferably 5 to 25 μm. Further, in the present invention, it is preferable that one side of the quadrangular recess has a length of 5 to 150 μm.
Further, in the present invention, the length of the vertical partition wall is 15 to 2
It is preferably 00 μm.

In the present invention, it is preferable that at least one of the two rectangular recesses located at both ends of the row of rectangular recesses be a recess for adjusting the lateral width of the plate.
The lateral width adjusting recess defines an outer peripheral straight line of the gravure printing plate.

In the present invention, the quadrangular recess is preferably a rectangular recess. It is preferable that the quadrangular recesses other than the lateral width adjusting recesses have a square shape.

When the gravure printing plate of the present invention is used, a printing material such as a conductive paste is filled in each quadrilateral, preferably rectangular, concave portion, which is transferred to a material to be printed.
The printing material is leveled, and a graphic conforming to the outer peripheral shape of the printing plate is printed. It is possible to perform rectangular printing with high linear accuracy on the outer peripheral edge without generating pinholes.

Further, the present invention is a gravure printing plate comprising a plurality of concave portions arranged by being separated by partition walls having the same height as the outer peripheral surface of the gravure roll, wherein a plurality of rectangular concave portions are longitudinally arranged in the roll width direction. A plurality of rows of rectangular recesses are formed by being separated from each other by partition walls, and the rows of the rectangular recesses are arranged in a plurality of rows in the roll circumferential direction by being separated by straight horizontal partition walls parallel to the roll width direction and adjacent to each other. In the row of the rectangular recesses that fit, a step of gravure-printing a conductive paste on a dielectric or a support using a gravure printing plate in which the vertical partition walls are formed at different positions in the roll width direction, is printed. By baking the conductive paste,
And a step of forming internal electrodes.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 5A is a plan view showing an outline of an example of a gravure printing plate formed on the outer peripheral surface of the gravure roll of the present invention, and FIG. 5B is a main part of the printing plate of FIG. It is an enlarged plan view.

In the gravure printing plate (20) of FIG. 5, a plurality of rectangular recesses (21a) (21c) are arranged in the roll width direction. Between these recesses (21a) and between recesses (21a) and recesses (2
1c) and vertical partition wall (22) in the roll circumferential direction.
The vertical partition walls (22) separate the recesses (21a) and (21c) from each other. The recess (21c) located at the left end or the right end of the recess array is a recess for adjusting the lateral width of the plate, and has a width different from that of the recess (21a). In this way, the rows (21-I) (21-II) (21-III) of rectangular recesses (21a) (21c) are formed in the roll width direction.

Then, the rectangular recess rows (21-I) (21-II) (21
-III) are separated by a linear horizontal partition wall (23) parallel to the roll width direction, and are arranged in a plurality of rows in the roll circumferential direction. This arrangement is performed by arranging adjacent recess rows (for example, (21-I) and
(21-II), (21-II) and (21-III)]
The ribs (22) are formed at different positions in the roll width direction, that is, the vertical partition walls (22) are not linearly continuous in the roll circumferential direction. The heights of the vertical barrier ribs (22) and the horizontal barrier ribs (23) are formed so as to be flush with the outer surface of the gravure roll.

When this gravure printing plate (20) is used for printing, each rectangular recess (21a) (21c) is filled with a printing material such as a conductive paste, and the excess printing material is drawn by a doctor blade in the direction of the arrow in the figure. The printing material, which is scraped off by the substrate and filled in the recesses, is transferred onto the support. After transfer,
The printing material is leveled, and a rectangular shape that matches the outer peripheral shape of the printing plate (20) is printed.

Referring to FIG. 5B, the movement of the printing material on the support at the time of leveling is indicated by arrows, and FIG.
It can be seen that the printing material is easily transferred to the connecting portion (22x) of the vertical barrier ribs (22) and the horizontal barrier ribs (23) as compared with the conventional printing plate. Therefore, when this gravure printing plate (20) is used for printing, pinholes on the printing surface can be reliably eliminated.
Further, since rectangular recesses are also arranged in the outer peripheral portion of the printing plate (20), the linear accuracy of the outer peripheral edge of the printed matter is also very excellent as compared with the conventional printing plate of FIG.

Therefore, when this gravure printing plate (20) is used in the step of printing the internal electrodes in the production of the laminated electronic component, the desired rectangular internal electrodes can be accurately linearly formed on the outer peripheral edge.
It is possible to print and form without generating pinholes. As a result, it is possible to obtain a multilayer capacitor free from variations in capacitance and defective breakdown voltage.

Of course, the gravure printing plate of the present invention is not limited to the production of laminated electronic parts by printing a conductive paste,
In addition, it can be applied to various purposes for printing a rectangular solid-filled figure.

The rectangular concave array pattern of the gravure printing plate of the present invention is not limited to that shown in FIG. 5, and various modifications can be considered. For example, in the printing plate (20) of FIG. 5, one of the two rectangular concave portions located at both ends of the rectangular concave row (21-I) (21-II) (21-III) has a horizontal width of the plate. Although it is said to be the adjustment recess (21c), both of them are for width adjustment recess (21c).
c) is good. Further, in the illustrated example, the width (C) of the concave portion (21c) is set to be shorter than the width (B) of the concave portion (21a), but the width (C)> (B) may be satisfied. . Further, there may be a row of recesses having no width adjusting recess (21c). The vertical length (A) of the recess (21a) is defined by the rectangular recess row (21-
Each of I) (21-II) and (21-III) may be different or the same. The rectangular recesses (21a) other than the lateral width adjusting recesses (21c) may have a rectangular shape or, as a special case thereof, a square shape. Furthermore, in FIG.
Although the rectangular printing plate that is vertically long in the circumferential direction of the roll is shown, a rectangular printing plate that is horizontally long may be used.

In the gravure printing plate of the present invention,
Various dimensions such as the length of one side of the rectangular concave portion, the depth of the concave portion, the width of the vertical barrier ribs, the width of the horizontal barrier ribs, and the like are optimized by appropriately changing them according to the type and viscosity of the printing material. For example,
When the conductive paste is printed, the width (d) of the vertical barrier ribs and / or the width (e) of the linear horizontal barrier ribs is preferably 5 to 25 μm without particular limitation. From the viewpoint of maintaining the linearity of the outer peripheral edge and eliminating the occurrence of pinholes, 25 μm or less is preferable. The length (A) (B) (C) of one side of the rectangular recess is preferably 5 to 150 μm. The length (A) (B) of one side of the rectangular recess is usually
It is preferably 50 to 150 μm. The vertical partition (2
The length of 2) is 15 to 15 including the width of the horizontal bulkheads to be connected.
It is preferably 200 μm. If the length of the vertical partition wall (22) is too long, pinholes tend to occur.

The gravure printing plate of the present invention is not particularly limited, but for example, a well-known chemical etching method, a laser processing method as described in JP-A-9-129503, or the like can be used to form a predetermined shape and arrangement on the roll surface. It can be manufactured by carving a recess. The chemical etching method will be briefly described. For example, after the gravure roll surface is plated with copper, cylindrical polishing is performed to obtain a predetermined cylindricity (20 μm or less) and surface roughness. Then, a UV photosensitive resin is applied and a desired printing plate pattern is printed. After the resin in the portion corresponding to the recess is washed away, an etching solution such as ferric chloride solution is sprayed onto the copper plating of the gravure roll to corrode the copper and create the desired recess. After that, the surface is Cr-plated to obtain a gravure roll on which the desired gravure printing plate is engraved. The UV photosensitive resin and etching solution used can be used without any problem as long as they are generally used.

The present invention also relates to a method for manufacturing a laminated electronic component using the above gravure printing plate. The method for manufacturing a laminated electronic component of the present invention, using the gravure printing plate,
The method includes a step of gravure-printing a conductive paste on a dielectric or a support, and a step of baking the printed conductive paste to form internal electrodes.

[0032]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. [Example 1] <Production of gravure roll> As shown in FIG.
A gravure printing plate having a concave arrangement pattern shown in Figure 3 was manufactured by a chemical etching method. In FIG. 5B, the concave portion
(21a) A dimension: 75 μm, B dimension: 75 μ
m, C dimension for the recess (21c): 25 μm, recess (21c)
a) (21c) depth: 35μm, vertical partition width d: 25μ
m, the width e of the horizontal partition wall: 25 μm.

<Dielectric coating material> Particle size 0.1 to 1.0 μ
About m of barium titanate was used as a main material, and it was calcined with a predetermined amount of powder of chromium oxide, yttrium oxide, manganese carbonate, barium carbonate, calcium carbonate, silicon oxide and the like. The ratio of each powder is 100 mol% of BaTiO ₃ , 0.3 mol% in terms of Cr ₂ O ₃ , 0.4 mol% in terms of MnO, 2.4 mol% in terms of BaO, C
The amount was 1.6 mol% in terms of aO, 4 mol% in terms of SiO ₂ , and 0.1 mol% in terms of Y ₂ O ₃ . After calcination, the mixture was mixed by a ball mill for 24 hours and dried to obtain a dielectric material. 100 parts by weight of this dielectric material, 5 parts by weight of vehicle, 40 parts by weight of methylene chloride, and 25 parts of acetone
By weight, 6 parts by weight of mineral spirits were mixed and mixed by a ball mill for 24 hours to obtain a derivative ceramic paint.

<Green Sheet Molding> The dielectric ceramic coating material obtained as described above is applied to a continuously supplied flexible support by the doctor blade method to obtain a 6.5 μm thick derivative green sheet. Layers were formed.

<Preparation of Internal Electrode Paste> Average particle size of 0.
100 parts by weight of 8 μm Ni particles, 27 parts by weight of organic vehicle solution (15 parts by weight of ethylcellulose resin dissolved in 85 parts by weight of terpineol) and 7 parts of terpineol 7
3 parts by weight were mixed and dispersed to form a paste.

<Internal Electrode Printing> The Ni paste obtained as described above was formed into a plate having a thickness of 1.5 μm by the direct gravure printing method using the gravure roll formed into a plate with a predetermined size and pattern. The internal electrode layer was printed on the above-mentioned dielectric green sheet, dried, and continuously wound. The printing speed at this time was 10 m / min. Thus, the dielectric sheet with printed internal electrodes of Example 1 was obtained.

<Preparation of Multilayer Capacitor> The obtained dielectric with the printed internal electrodes was peeled from the flexible support, a laminate having 230 layers was obtained by a laminating machine, thermocompression-bonded, and then cut. Thus, a green chip laminated body having 230 laminated internal electrode layers was obtained. In addition, a protective layer was formed on each of the outermost upper and lower parts of the green chip laminate in the stacking direction by using five 30 μm-derivative green sheet layers. The obtained green chip laminated body was subjected to binder removal treatment under a predetermined temperature condition according to a conventional method, then baked, and further, a terminal electrode was formed by baking. The conditions for binder removal and firing are conventionally well known, and in this example, binder removal was performed at 280 ° C. for 12 hours, and firing was performed at 1300 ° C. for 2 hours in a reducing atmosphere. The material and forming method of the terminal electrode are well known in the art, and in this embodiment, the temperature of the terminal electrode is 800 ° C. in a reducing atmosphere.
Baking with copper as the main component was carried out for 0 minutes to perform plating. Thus, the multilayer capacitor of Example 1 was manufactured.

<Characteristic Evaluation 1: Evaluation of Printed Shape> The internal electrode printed sheet prepared by the gravure printing described above was
The printed state was evaluated by magnifying 100 times with a microscope. -Pinhole occurrence: It was observed whether there was a pinhole or there was coating missing (a state where the pinhole was continuously growing). -Linear accuracy of outer peripheral edge: The size of irregularities on the outer peripheral edge of the printed matter was measured. As shown in FIG. 6, the unevenness difference on each side of the printed shape (S) was measured, and the maximum difference was defined as L (μm).

<Characteristic Evaluation 2: Measurement of Capacitance> Capacitance f (μF) of the obtained multilayer capacitor was measured with an impedance analyzer HP-42 manufactured by Hewlett-Packard Company.
Measured at 84 A at 20 ° C. Table 1 shows the average value x and 3σ / x of 100 measurements.

[Examples 2 to 7] In the gravure printing plate, the A dimension, the B dimension, and the concave portion (21c) of the concave portion (21a)
A gravure roll was manufactured in the same manner as in Example 1 except that the C dimension, the vertical partition wall width d, and the horizontal partition wall width e were changed to the values shown in Table 1. Using this gravure roll, internal electrodes were printed in the same manner to produce a laminated capacitor. The results of the characteristic evaluation are shown in Table 1.

[Comparative Example 1] A gravure roll having a gravure printing plate (13) having a concave portion arrangement as shown in FIG. 7A was manufactured. This is a gravure printing plate having a frame-shaped recess corresponding to the outer peripheral edge of the internal electrode described in JP-A-6-316174. A dimension for the rectangular recess (13a): 100
μm, B dimension: 100 μm, g dimension for the frame-shaped recess (13b), that is, partition wall extended in the frame-shaped recess (13b)
(13c) (13d) Distance between end face and end face of outer periphery of frame-shaped recess: 2
The width was 0 μm, and the widths d and e of the partition walls (13c) (13d) were 25 μm. Depth of recess: 35 μm. Using this gravure roll, internal electrodes were printed in the same manner to produce a laminated capacitor. The results of the characteristic evaluation are shown in Table 1. The printing state is as shown in FIG.
Application blank (14a) in which pinholes were continuously prominent in (14),
That is, many areas where the Ni paste was not printed were recognized.

[Comparative Example 2] A gravure roll having a gravure printing plate (15) having a concave arrangement as shown in FIG. 8A was manufactured. Similarly to the above, the gravure printing plate has a frame-shaped recess corresponding to the outer peripheral edge of the internal electrode. The diamond-shaped recess (15a) had an A dimension of 100 μm, the B dimension was 100 μm, the frame-shaped recess (15b) had a g dimension of 20 μm, and the partition wall width d and e were 35 μm. Depth of recess: 35 μm. Using this gravure roll, internal electrodes were printed in the same manner to produce a laminated capacitor. The results of the characteristic evaluation are shown in Table 1. The printed state is, as schematically shown in FIG. 8B, a large number of pinholes (16a) on the printed surface (16) of the internal electrodes.
Was recognized.

[0043]

[Table 1]

From Table 1, when printing is performed using the gravure rolls of Examples 1 to 5, pinholes are not generated and the linear accuracy of the outer peripheral edge is excellent. The capacitance variation of the multilayer capacitor is also very small. In Examples 6 and 7, since the vertical partition wall width d and the horizontal partition wall width e of the gravure printing plate were large,
The linear accuracy of the outer peripheral edge is slightly inferior, and pinholes tend to occur. In Comparative Example 1, the linear accuracy of the outer peripheral edge is good,
There is a lot of coating missing. The capacitance of multilayer capacitors is small,
The variation is also large. In Comparative Example 2, many pinholes are generated, the electrostatic capacitance of the multilayer capacitor is small, and the variation is large.

The present invention can be embodied in various other forms without departing from the spirit or the main features thereof. Therefore, the above embodiments are merely examples in all respects, and should not be limitedly interpreted. Furthermore, all changes that come within the equivalent scope of the claims are within the scope of the present invention.

[0046]

According to the gravure printing plate of the present invention, the partition walls in the roll circumferential direction, which is the direction of scraping the printing material by the doctor blade, are not continuously arranged in a straight line, so that the outer peripheral edge of the printed matter is It is possible to obtain a printed matter having excellent linear accuracy and free of pinholes on the printed surface.

When a conductive electronic paste for internal electrodes is printed by using the gravure printing plate of the present invention to manufacture a laminated electronic component, it is possible to obtain an internal electrode which is excellent in linear accuracy of the outer peripheral edge and does not cause pinholes. . Therefore, according to the method of the present invention, it is possible to obtain a multilayer capacitor with very small variation in electrostatic capacitance. The method of the present invention is suitable for gravure printing in various laminated electronic component manufacturing,
Of course, it can be used for gravure printing for various other purposes.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a gravure printing method.

FIG. 2 is a perspective view showing an outline of a gravure roll.

FIG. 3A is a plan view showing a conventional gravure printing plate. FIG. 6B is an enlarged view of the portion A in FIG.

FIG. 4A is a plan view showing a conventional gravure printing plate. FIG. 6B is an enlarged view of the portion A in FIG.

FIG. 5A is a plan view schematically showing an example of a gravure printing plate of the present invention. FIG. 3B is an enlarged plan view of an essential part of the printing plate of FIG.

FIG. 6 is a plan view for explaining the evaluation of the linear accuracy of the outer peripheral edge of the printed material.

FIG. 7A is a plan view showing a main part of the gravure printing plate used in Comparative Example 1. FIG. 6B is a schematic plan view of the obtained printed matter.

8A is a plan view showing a main part of the gravure printing plate used in Comparative Example 2. FIG. FIG. 6B is a schematic plan view of the obtained printed matter.

[Explanation of symbols]

(20): Gravure printing plate (21a): Rectangular recess (21c): Plate width adjustment recess (22): Vertical partition wall in the roll circumferential direction (23): Straight horizontal bulkhead parallel to the roll width direction (21-I) (21-II) (21-III): Rows of rectangular recesses (22x): Connection part of vertical bulkhead (22) and horizontal bulkhead (23)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Satoshi Iijima             1-13-1, Nihonbashi, Chuo-ku, Tokyo             -In DC Inc. (72) Inventor Katsuhiko Yamazaki             1-13-1, Nihonbashi, Chuo-ku, Tokyo             -In DC Inc. (72) Inventor Ryo Kobayashi             1-13-1, Nihonbashi, Chuo-ku, Tokyo             -In DC Inc. F-term (reference) 2C034 AA21                 2H114 AA03 AA10 EA04                 5E082 AA01 AB03 BB07 BC14 EE04                       EE35 FF05 FG26 FG54 GG10                       MM22 MM23 MM24 PP09

Claims (8)

[Claims] 1. A gravure printing plate comprising a plurality of recesses separated by partition walls having the same height as the outer peripheral surface of the gravure roll, wherein a plurality of rectangular recesses in the roll width direction are formed in a substantially circumferential direction of the roll. To form rows of quadrangular recesses that are separated from each other by the vertical partition walls, and the quadrangular recess rows are arranged in a plurality of rows in the roll circumferential direction that are separated by linear horizontal partition walls that are parallel to the roll width direction, In the rows of the rectangular recesses adjacent to each other, the vertical partition walls are formed at different positions in the roll width direction,
Gravure printing plate. 2. The gravure printing plate according to claim 1, wherein the width of the vertical barrier ribs and / or the width of the linear horizontal barrier ribs is 5 to 25 μm. 3. The length of one side of the rectangular recess is 5 to 5.
The gravure printing plate according to claim 1, which has a thickness of 150 μm. 4. The length of the vertical barrier ribs is 15 to 200 μm.
The gravure printing plate according to any one of claims 1 to 3, which is 5. The plate according to claim 1, wherein at least one of the two rectangular recesses located at both ends of the row of the rectangular recesses is a recess for adjusting the lateral width of the plate. The described gravure printing plate. 6. The rectangular recess is a rectangular recess.
The gravure printing plate according to any one of claims 1 to 5. 7. The gravure printing plate according to claim 5, wherein the quadrangular recess other than the lateral width adjusting recess has a square shape. 8. A gravure printing plate comprising a plurality of recesses separated by partition walls having the same height as the outer peripheral surface of the gravure roll, wherein a plurality of rectangular recesses are separated by vertical partition walls in the roll width direction. Are arranged to form a row of square-shaped recesses, and the rows of the square-shaped recesses are arranged in a plurality of rows in the circumferential direction of the roll by being separated by linear horizontal partition walls parallel to the roll width direction, and the square shapes adjacent to each other. In the recess row, using a gravure printing plate in which the vertical partition walls are formed at different positions in the roll width direction, a step of gravure-printing a conductive paste on a dielectric or a support, and a printed conductive paste. And a step of forming internal electrodes by baking.