JP3180718B2 - Gravure electrode ink, method of manufacturing the same, and method of manufacturing multilayer ceramic electronic component - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink for internal electrodes of multilayer ceramic capacitors and the like widely used in various electronic devices, and more particularly to a gravure electrode ink for gravure printing, a method of manufacturing the same, and a method of manufacturing a multilayer ceramic electronic component. It is.

[0002]

2. Description of the Related Art Conventionally, as this kind of electrode ink for screen printing, for example, the inside of a multilayer ceramic capacitor for screen ink, which is kneaded with three rolls of a nickel metal powder proposed in Japanese Patent Application Laid-Open No. 5-205970, is proposed. Electrode pastes and conductive pastes for screen inks using palladium powder coated with palladium proposed in JP-A-5-275263 are known.

[0003]

Conventionally, as a method of manufacturing a multilayer ceramic electronic component such as a multilayer ceramic capacitor, the internal electrodes are generally formed by screen printing. However, Japanese Patent Publication No. 5-25381 and Japanese Patent Publication No. 8
Japanese Patent Publication No. -8200 proposes a gravure printing method in order to further reduce costs and improve performance. U.S. Pat. No. 5,101,319 proposes calendering of gravure printed electrodes for multilayer ceramic capacitors. Hereinafter, the internal electrode ink will be described mainly with respect to the multilayer ceramic capacitor.

[0004] On the other hand, various proposals have been made for electrode inks for screen ink. For example, JP-A-5-55075 proposes a conductive paste containing nickel oxide for a screen printing technique, and JP-A-5-90069 discloses that rosin is added to a conductive paste for a screen. JP 5
JP-A-226179 proposes the use of scale-shaped powder for the screen conductor paste.
Also, in Japanese Patent Application Laid-Open No. 5-242724, a conductive paste for screen printing to which an organic phosphoric acid is similarly added is used.
In JP-A-5-275263, a conductive paste for screen printing in which zirconia powder is coated with a base metal such as nickel is further disclosed in JP-A-5-29928.
In Japanese Patent Application Publication No. 8 (1994), a method for manufacturing a multilayer ceramic capacitor in which internal electrodes are screen-printed using a polyether urethane resin is proposed.

[0005] Such a screen electrode ink is effective when the internal electrodes are formed by the screen printing method as in the past, but cannot be naturally applied to a completely new gravure printing method.

The difference between the screen electrode ink and the gravure electrode ink will be described. Conventional electrode inks for screen printing use thixotropy (high viscosity before printing and low viscosity during printing) to prevent ink bleeding during printing with high viscosity (500 to 2,000 poise with a commercially available electrode ink). (The phenomenon of low viscosity and high viscosity after printing). In screen printing, when a low-viscosity ink of 10 poise or less is used, the screen printing cannot be performed because the ink drips from the screen net.

On the other hand, in gravure printing, the ink viscosity needs to be extremely low (0.5 to 2 poise for a commercially available gravure ink for food packaging materials). If the ink viscosity becomes as high as 10 poise or more, In addition, the ink does not transfer from the cells of the gravure plate (fine holes formed on the surface of the gravure plate) to the printing medium, resulting in poor printing. If the gravure ink has thixotropy, the ink will not be transferred from the gravure plate, causing print unevenness such as swimming. For this reason, it is important to prevent the occurrence of thixotropy in gravure ink. As described above, the gravure ink is required to be the reverse of the conventional screen ink.

The present invention proposes a gravure electrode ink for laminated electronic parts and a method for producing the same, which cannot be obtained by extending conventional screen inks and methods for producing the same. The majority of commercially available gravure inks are for food packaging materials, and none of them can be used for electronic parts and for applications fired at a high temperature of 600 ° C. or more simultaneously with ceramic materials.

In the present invention, a gravure electrode ink for firing is proposed, which is used for multilayer ceramic electronic components such as multilayer piezoelectric elements, multilayer varistors, etc., including low-cost, high-performance multilayer ceramic capacitors required from the market. It is an object of the present invention to provide a gravure electrode ink.

[0010]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention proposes a new gravure electrode ink for a base metal internal electrode mainly composed of nickel or the like. While enabling high-speed, high-precision printing that could not be reached,
The purpose is to remove aggregates in the ink and further improve the reliability and yield of the multilayer ceramic capacitor.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention relates to a gravure electrode ink containing a base metal powder containing nickel as a main component, wherein the resin is not less than 1 part by weight based on 100 parts by weight of the metal powder. 15 parts by weight or less, 2 organic solvents
A gravure electrode ink characterized by having a weight of 0 to 150 parts by weight, a viscosity of 10 poises or less, and an agglomerate of 10 μm or more removed. A ceramic capacitor can be manufactured at lower cost, and the use of the gravure electrode ink has an effect that cost reduction and high reliability of a multilayer ceramic electronic component such as a multilayer ceramic capacitor can be achieved.

According to a second aspect of the present invention, in a gravure electrode ink containing a base metal powder containing nickel as a main component, a resin is added to 100 parts by weight of a metal powder.
From 15 parts by weight to 15 parts by weight, from 10 parts by weight to 50 parts by weight of a petroleum solvent, from 10 parts by weight to 100 parts by weight of an organic solvent, and a viscosity of 10 poises or less, and an aggregate of 10 μm or more is removed. A gravure electrode ink characterized by the fact that by adding a petroleum solvent,
It has the effect that highly accurate gravure printing can be performed even on a green sheet.

[0013] The invention according to claim 3 of the present invention is characterized in that at least 30% of the resin is an ethylcellulose resin or butyral resin, and in the case of the ethylcellulose resin, the ethoxy group is at least 48% and at most 49.5%. 1 or 2
The gravure electrode ink described in the above, which has the effect of preventing the precipitation and aggregation of the gravure ink, increasing the transferability of the printed coating film from the transfer film or green sheet, and reducing lamination defects. .

According to a fourth aspect of the present invention, in the gravure ink using a base metal powder containing nickel as a main component, the water-soluble resin is contained in an amount of 1 to 15 parts by weight based on 100 parts by weight of the metal powder. Below, 10 parts by weight or more of pure water 1
Contains 50 parts by weight or less, viscosity is 10 μm or less at 10 poises or less.
It is a gravure electrode ink characterized by removing the above aggregates, and has the effect of further improving the working environment against the environment in printing work, fire, fire fighting laws and the like.

According to a fifth aspect of the present invention, there is provided a gravure electrode ink containing a base metal powder containing nickel as a main component. A gravure electrode ink comprising 20 to 150 parts by weight, a plasticizer of 0.5 to 10 parts by weight, a viscosity of 10 poises or less, and an aggregate of 10 μm or more removed. By imparting flexibility to the printed gravure ink coating film, the gravure ink coating film can be prevented from cracking or peeling after drying.

According to a sixth aspect of the present invention, there is provided the laminated ceramic according to the present invention, wherein the plasticizer uses a phthalate ester, an aliphatic ester, an alcohol ester, an oxyacid ester or glycerin. This has the effect of improving the lamination properties of the electronic component and preventing the occurrence of defects such as delamination during firing.

According to a seventh aspect of the present invention, when the gravure printing is performed using a gravure plate having a cell depth in the range of 5 μm to 30 μm, the film thickness of the gravure-printed electrode ink after drying is reduced. The solvent or solid content in the electrode ink is set so that the thickness is 0.1 μm or more and 2 μm or less. By doing so, continuous printing for a long time is possible, and high lamination of 100 layers or more is possible. Has the effect that a printed coating film can be formed.

[0018] The invention according to claim 8 of the present invention provides a method as set forth in claim 1.5.
By passing the gravure electrode ink through a filter or a net or a filter material at a pressure of Kg / cm ² or more,
This is a method for producing a gravure electrode ink that removes aggregates of 0 μm or more, and has the effect of increasing productivity and filtration efficiency by applying pressure during filtration.

According to a ninth aspect of the present invention, a resin is used in an amount of 1 to 15 parts by weight and a solvent is used in an amount of 20 to 150 parts by weight based on 100 parts by weight of a metal powder mainly composed of nickel.
Parts by weight or less, and the viscosity is 10 poises or less and 10 μm
Using the gravure electrode ink from which the above aggregates have been removed, an internal electrode is formed by gravure printing on a film or a green sheet at a high speed of 10 m / min or more, and a ceramic is formed by using the gravure printed internal electrode. This is a method of manufacturing a multilayer ceramic capacitor that forms a green laminate, cuts it into a predetermined shape, and fires it to form an external electrode.Even if re-aggregation due to magnetization of nickel fine particles occurs, ink can be applied on a gravure plate at high speed. Can be stirred and redispersed,
Further, by providing such a gravure electrode ink capable of high-speed printing, there is an effect that the cost of the multilayer ceramic capacitor can be reduced.

Hereinafter, an embodiment of the present invention will be described. (Embodiment 1) First, a nickel gravure electrode ink will be described. As the gravure printing apparatus, an apparatus for printing a commercially available food packaging material was used. As a printing medium for gravure printing, a commercially available transfer resin film having a thickness of 50 μm was used, and the nickel gravure electrode ink developed thereon was gravure printed.

As a gravure printing ink, 100 parts by weight of a commercially available nickel metal powder (particle size: 0.3 μm) is dispersed in a vehicle composed of 10 parts by weight of ethyl cellulose resin, 20 parts by weight of toluene, and 20 parts by weight of ethyl alcohol. Prototype low viscosity ink with a viscosity of 2 poise,
Filter using a 10 μm membrane filter.
The above aggregates were removed to obtain a gravure ink. On the plate cylinder for gravure printing (gravure plate), a pattern equivalent to a chip size of 1.6 mm × 0.8 mm is printed with a printing area of 30 mm.
Thousands of patterns obtained in 0 mm x 300 mm
A plate made by chamfering (the same pattern is formed on one circumferential surface so that three patterns are printed when the gravure plate rotates once) is prepared.

Using this gravure ink, an electrode pattern was gravure printed on the base film. And the ceramic raw sheet prepared separately,
As proposed in Japanese Patent Publication No. 1 (1993), a multilayer ceramic capacitor was prototyped by alternately transferring and laminating a separately prepared ceramic raw sheet using a kind of a transfer film for electrodes. When the characteristics of the prototyped multilayer ceramic capacitor were measured, the reliability (in an accelerated test) was at least twice as high as that obtained by trial production by conventional screen printing.

For comparison, an electrode was similarly screen-printed on a resin film using a commercially available nickel screen ink for screen printing (also nickel metal powder having a particle size of 0.3 μm), and similarly prepared separately. A multilayer ceramic capacitor was prototyped by alternately transferring and laminating the ceramic raw sheet. When the characteristics of the prototyped multilayer ceramic capacitor were measured, only the characteristics as in the past (1/5 reliability of gravure printed products) were obtained.

The kneading degree of the commercially available screen ink was evaluated using a grind meter.
Aggregates of about 5 μm to 25 μm (secondary aggregates with insufficient dispersion) were observed. Since this aggregate was considered to be a cause of the defect, using a mesh (metal net) having an opening of 20 μm,
Aggregates of 20 μm or more were removed by filtration. However, because of the high viscosity of the screen ink, the filtration efficiency was low and it took 4 hours to filter 1 kg. Further, filtration was attempted using a 10 μm membrane filter as in the case of gravure ink, but the filter was clogged because the viscosity was extremely high at 1000 poise, and filtration could not be performed.

A commercially available screen electrode ink screen-printed on a transfer resin film and a gravure-printed gravure electrode ink were prepared, dried, and the ink surface was observed. The aggregates of 10 μm to 20 μm were observed. On the other hand, in the case of gravure printing, aggregates of several μm or more were not observed on the surface, and the presence or absence of such aggregates increased the yield of the finished product and consequently achieved high reliability. As expected.

(Embodiment 2) Next, a 4 μm-thick ceramic slurry was applied on a 50 μm-thick resin film by a coater to obtain a green sheet. Next, the electrode ink prototyped in Embodiment 1 was printed thereon by gravure printing. Then, as pointed out in Japanese Patent Publication No. 5-25381, when the electrodes were printed directly on the green sheet, the ceramic raw sheet portion on the surface of the green sheet swelled and dissolved, and was not practically usable.

Therefore, the solvent component of the gravure ink was examined, and a gravure electrode ink capable of preventing the swelling and dissolution of the green ceramic sheet was developed (hereinafter referred to as green gravure ink). First, as a result of examining about 300 types of solvents that do not dissolve the green sheet, a petroleum-based solvent could be selected. Therefore, a vehicle was prepared using 10 parts by weight of an ethylcellulose resin, 20 parts by weight of toluene, and 20 parts by weight of a petroleum-based solvent, and 100 parts by weight of the commercially available nickel metal powder (particle size: 0.3 μm) was dispersed therein. Then, a low-viscosity ink having a viscosity of 2 poise was prototyped, aggregates of 10 μm or more were removed, and a gravure ink was prototyped and gravure-printed directly on the green sheet. I was able to print with precision.

For comparison, a petroleum-based solvent was mixed with a commercially available nickel electrode ink for screen printing, and a printing experiment was performed on a green sheet by a screen printing method.
The thickness of the ceramic raw sheet is 20 μm, 15 μm, 10
In the case of μm, the green sheet did not swell. However, the thickness of the ceramic raw sheet is 7 μm, 5 μm.
The swelling was observed as the thickness became smaller as m and 3 μm (the presence or absence of swelling was observed from the back surface of the green sheet). A trial production of a multilayer ceramic capacitor using the swelled green sheets revealed that short circuits occurred frequently and the yield was low. On the other hand, in the case of the gravure electrode ink prototyped in the second embodiment, the thickness of the ceramic green sheet is 7 μm.
No swelling was observed even when the thickness was reduced to m, 5 μm, and 3 μm, and a high yield of 95% or more was obtained with the prototyped multilayer ceramic capacitor.

As described above, in the conventional screen printing, since the electrode ink is transferred while pressing the uneven screen against the green sheet with a strong pressure, the green sheet is damaged or a pinhole is generated in the swelling green sheet. Or On the other hand, in the case of gravure printing, since the metal cylinder is only pressed lightly, even if the green sheet swells, there is no damage or pinholes.

(Embodiment 3) Next, a gravure electrode ink that can be printed in a thin layer using an ethylcellulose resin will be described. In particular, in the case of a multilayer ceramic capacitor, the number of stacked layers is increased with the increase in capacity (the number of stacked internal electrodes is 20).
When the number of layers is from 0 to 500), the thickness of the internal electrode becomes a problem. That is, when the thickness of the electrode is 2 μm, 40
At 0 μm, it becomes 1000 μm with 500 layers, and it becomes difficult to include product dimensions in specifications. Therefore, a gravure electrode ink that enables thin-layer printing will be described. In order to make the layer thinner by gravure printing and to prevent electrode breakage (breaking failure due to sintering), it is necessary to highly disperse the ink and make the dried coating film of the ink highly uniform.

Then, as a result of examining various types of ethyl cellulose resins, it was found that some of the resins were liable to cause electrode breakage due to thinning, while others were less likely to cause electrode breakage. Thus, when the degree of substitution of ethylcellulose was changed in various ways, it was found that an electrode having an ethoxy group of about 49% was most unlikely to cause electrode disconnection even when the thickness was reduced.

Thus, a gravure electrode ink containing 49% of ethoxy groups was trial-produced, aggregates of 10 μm or more were removed, and a dry film thickness of 2 μm (corresponding to a film thickness of 1 μm after firing) and 1 μm (Equivalent to 0.5 μm), and gravure printing was performed to produce a prototype multilayer ceramic capacitor. Although the number of layers was 100, 200, and 400, all could be manufactured with high yield.

For comparison, similarly, 47% of ethoxy groups,
An electrode ink for gravure printing was manufactured on a trial basis at 51%, and a large number of gel-like suspended matters and aggregates were generated inside the ink, and it was difficult to remove aggregates of 10 μm or more therefrom. Nevertheless, the dry film thickness is 2 μm (equivalent to 1 μm after firing) and 1 μm (equivalent to 0.5 μm) on the green sheet.
A gravure printing was performed to produce a monolithic ceramic capacitor. However, many electrodes were cut and no good product was obtained. Then, when the coating film was observed, it was observed that a large number of aggregates, such as gels of ethyl cellulose, remained.

As described above, when the petroleum solvent is added to the gravure electrode ink at 10% to 40%, the ethoxy group content must be around 49% (from 48% to 49.5%). If the ethoxy group is less than 48% (especially 45% to 46.5%), when a petroleum-based solvent is added, it becomes gel-like or precipitates, and as a resin for green gravure ink, Was inappropriate. Similar results were obtained for those having an ethoxy group of 49.5% or more (particularly, 49.5 to 52%).

(Embodiment 4) Next, the filtration of gravure ink will be described. The gravure electrode ink is obtained by adding 100 parts by weight of a commercially available nickel metal powder (particle diameter: 0.3 μm)
A low-viscosity ink having a viscosity of 2 poise was prepared by dispersing in a vehicle consisting of 10 parts by weight of butyral resin, 20 parts by weight of toluene, and 20 parts by weight of ethyl alcohol. No filtration, 20μm, 10μm, 5μm, 3
After filtration using a μm membrane filter, this was printed on a transfer resin film, and as described in Embodiment 1, 500 layers were alternately transferred and laminated with a separately prepared ceramic raw sheet. A multilayer ceramic capacitor was prototyped.

When the yield of the finished multilayer ceramic capacitor was examined, no filtration was the worst.
0 μm was bad. 15 μm, 10 μm, 5 μm, 3 μ
The yield of m was high. Therefore, the thickness of the green ceramic sheet was further reduced to 5 μm and examined. As a result, the yield of 15 μm was the lowest, followed by the yield of 10 μm, 5 μm, and 3 μm. However, when considering the labor, yield, and cost of the filtration treatment, 15 μm or 10 μm was appropriate. In the future, when finer metal powders of 0.1 μm or less are developed and new dispersing technology is developed, by performing ultra-high precision filtration of 5 μm or 3 μm,
Aggregates of 5 μm to 10 μm or less can be removed.

As the filtration method, pressure filtration is appropriate. Since the viscosity of the gravure electrode ink of the present invention was low, it was possible to filter 1 kg at a pressure of 3 kg / cm ² within 10 minutes. The pressure for filtration under pressure is preferably 1.5 kg / cm ² or more. At 1.5 kg / cm ² or less, even though the resin solution can be filtered, the nickel particles contained in the gravure electrode ink almost pass through the filter (however, even if highly dispersed, it is an obstacle). could not. The pressure is desirably 3 kg / cm ² or more, but in order to filter at 10 kg / cm ² or more, it is necessary to take safety measures for the equipment.

For general liquid filtration, a filter is often set on a funnel, filled with ink and filtered by the weight of the liquid. However, in the case of a gravure electrode ink for laminated electronic components, an organic solvent is often used, and such a method cannot be used from the viewpoint of working environment and productivity. As a pressurizing means, a diaphragm pump, a gear pump, or the like can be used in addition to putting gravure ink in a closed container and applying air pressure in order to prevent evaporation of the solvent. By doing so, the productivity at the time of ink filtration can be increased, and the work can be performed more safely. At the time of this filtration, it is desirable to provide a ground to necessary facilities and floors in order to prevent ignition and fire due to charging of the ink.

By thus removing the gravure ink aggregate of 10 μm or more, the yield of the multilayer ceramic electronic component can be increased.

(Embodiment 5) Next, how to use the gravure electrode ink of the present invention in gravure printing will be described. In order to prevent the solvent in the ink from evaporating during the gravure printing operation and changing the viscosity and the solid content, an automatic viscosity adjusting device to which a diluting solvent is appropriately added as necessary is used. At this time, the main component of the diluting solvent is a solvent that is the easiest to dry in the gravure ink. By doing so, even when printing is performed for a long time, a change in the electrode film thickness can be suppressed.

The thickness of the gravure-printed electrode coating film is preferably 2 μm or less. If the thickness is 3 μm or more, a high stack of 100 or more layers may cause a defect.

The printing speed during gravure printing is 10 m /
Min, preferably 20 m / min or more. At 10 m / min, it is difficult to prevent an increase in viscosity (thixotropic property) caused by metal fine particles contained in the electrode. On the other hand, 20m
By setting the rate to / min, the ink is always stirred and redispersed on the surface of the gravure plate, and the increase in viscosity due to reaggregation of the metal fine particles can be suppressed.

In particular, the gravure electrode ink of the present invention is intended for low cost and thin layers of a multilayer ceramic capacitor, and uses a base metal material such as nickel for the metal powder. Nickel is easily magnetized, and when it is magnetized, aggregates are more easily formed. For this reason, an ink composition having a special specification as described in the present gravure electrode ink and a manufacturing method thereof are required.

Although the particle size of the metal powder (diameter of the particle) and the surface area of the metal powder are also affected, the particle size of the nickel particles is not larger than 0.1.
In the case of 3 μm, the optimum value is about 3 to 7 parts by weight of the resin with respect to 100 parts by weight of the metal powder. If the amount is less than 1 part by weight, the strength of the gravure-printed ink coating film is insufficient, and the ink film is damaged or peeled off during work or storage. If the amount of the resin is more than 150 parts by weight, the filling density of the metal powder in the coating film becomes low, and the defective electrode is likely to occur.

The amount of the solvent in the gravure ink is desirably from 20 to 150 parts by weight based on 100 parts by weight of the metal powder. It is affected by the viscosity of the resin.
When the amount is less than 0 parts by weight, drying becomes too fast at the same time as the viscosity of the ink becomes high, and the dried ink adheres to the gravure plate to cause stain. On the other hand, when the amount of the solvent is 150 parts by weight or more, the drying time of the ink becomes longer, so that it is necessary to lengthen the drying furnace or raise the drying temperature. However, in this case, the heat may cause the green sheet or the transfer film to be stretched, and the accuracy of the printed pattern may be deteriorated.

As the resin, it is preferable that ethyl cellulose or butyral resin is used alone or contains 30% or more of the total resin amount. By doing so, the dispersion of the metal powder can be increased, and ink precipitation can be prevented. Also, defects in the firing step can be reduced.

A gravure electrode ink containing pure water instead of the organic solvent is also possible. In this case, alcohol such as isopropyl alcohol or a solvent such as ethylene glycol is further added to reduce the ink drying property and the surface tension of the ink by setting the pure water to 15 parts by weight or more and 150 parts by weight or less. Can also. In this case, the resin
A water-soluble resin such as polyvinyl alcohol, methyl cellulose, polyethylene glycol, and acrylic resin can be used. Also in this case, if the amount of the resin is too small, the adhesion strength of the ink is reduced, and if the amount of the resin is too large, the electrode is easily cut off during firing.
The amount of the water-soluble resin is desirably from 1 to 15 parts by weight.

The gravure electrode ink proposed in the present invention is desirably used when the depth of cells (fine recesses for receiving ink formed on the plate) on the surface of the gravure plate is 5 μm or more and 30 μm or less. In this range, the thickness of the gravure-printed electrode ink after drying is 0.1 μm.
Improve the long-term printing stability of gravure electrode ink by determining the ink composition of the solvent or solid content in the electrode ink so that it becomes 2 μm or less, or by introducing an automatic viscosity controller during printing. it can.

Further, plasticity can be added to the gravure electrode ink proposed in the present invention. As the plasticizer, phthalate esters such as dimethyl phthalate, diethyl phthalate, dibutyl phthalate, diheptyl phthalate, dioctyl phthalate, diisononyl phthalate, diisodecyl phthalate, butyl benzyl phthalate, and dicyclohexyl phthalate may be used. it can. Aliphatic esters such as butyl oleate, glycerin monooleate, dibutyl adipic acid, di-n-hexyl adipate, di-2-ethylhexyl adipate, and dibutyl sebacate;
Alternatively, alcohol esters such as diethylene glycol dimenzoate and triethylene glycol ethyl butyrate, oxyacid esters such as butyl acetyl ricinoleate and tributyl acetyl citrate, glycerin, and ethylene glycol can be used. The addition of such a plasticizer was not performed in the conventional screen electrode ink, but in the case of the gravure electrode ink, especially in the case where the film thickness after printing becomes thin, in order to improve the flexibility of the coating film and relieve stress. Is effective. The amount of the plasticizer is preferably 0.5 to 10 parts by weight based on 100 parts by weight of the metal particles. When the amount of the plasticizer is less than 0.5 part by weight, the effect of addition cannot be obtained. If the amount is more than 10 parts by weight, the surface of the coating film after the gravure printing becomes sticky, and dirt easily adheres to the coating film, thereby causing a defect.

[0050]

As described above, according to the present invention, a high-performance gravure electrode ink capable of gravure printing can be prepared, and by using this, a multilayer ceramic electronic component such as a multilayer ceramic capacitor can be manufactured at a low cost and a high yield. Obtained with high reliability.

Claims (9)

(57) [Claims] 1. In a gravure electrode ink containing a base metal powder containing nickel as a main component, a resin is 1 to 15 parts by weight, and an organic solvent is 20 to 150 parts by weight based on 100 parts by weight of a metal powder. Parts or less, a viscosity of 10 poise or less, and an aggregate of 10 μm or more is removed. 2. In a gravure electrode ink containing a base metal powder containing nickel as a main component, 1 to 15 parts by weight of a resin and 10 to 50 parts by weight of a petroleum-based solvent with respect to 100 parts by weight of a metal powder. Parts by weight or less, 1 organic solvent
A gravure electrode ink comprising 0 to 100 parts by weight, having a viscosity of 10 poises or less and removing aggregates of 10 μm or more. 3. The gravure electrode ink according to claim 1, wherein 30% or more of the resin is an ethylcellulose resin or a butyral resin, and in the case of the ethylcellulose resin, the ethoxy group is from 48% to 49.5%. 4. In a gravure ink using a base metal powder containing nickel as a main component, 1 to 15 parts by weight of a water-soluble resin and 10 to 150 parts by weight of pure water with respect to 100 parts by weight of a metal powder. Less than 10 parts by weight, viscosity 10
A gravure electrode ink, wherein agglomerates of 10 μm or more in poise or less are removed. 5. In a gravure electrode ink containing a base metal powder containing nickel as a main component, a resin is 1 to 15 parts by weight, and a solvent is 20 to 150 parts by weight based on 100 parts by weight of a metal powder. A gravure electrode ink comprising a plasticizer in an amount of 0.5 parts by weight or more and 10 parts by weight or less, a viscosity of 10 poises or less, and an aggregate of 10 μm or more removed. 6. The gravure electrode ink according to claim 5, wherein the plasticizer is a phthalic acid ester, an aliphatic ester, an alcohol ester, an oxyacid ester, or glycerin. 7. When gravure printing is performed using a gravure plate having a cell depth of 5 μm or more and 30 μm or less, the film thickness of the gravure printed electrode ink after drying is 0.1 μm.
The gravure electrode ink according to any one of claims 1 to 4, wherein a solvent content or a solid content in the gravure electrode ink is set so as to be not less than 2 µm. 8. The gravure electrode ink according to any one of claims 1 to 4, wherein the gravure electrode ink is passed through a filter, a net, or a filter at a pressure of 1.5 kg / cm ² or more, A method for producing a gravure electrode ink, comprising removing aggregates having a size of 10 μm or more. 9. A metal powder 100 containing nickel as a main component.
1 part by weight or more and 15 parts by weight or less,
The solvent is 20 parts by weight or more and 150 parts by weight or less, the viscosity is 10 poises or less, and the gravure electrode ink from which the aggregates of 10 μm or more are removed is used on a film or a green sheet at a high speed of 10 m / min or more. A method for manufacturing a multilayer ceramic electronic component, wherein an internal electrode is formed by gravure printing, a ceramic green laminate is formed using the gravure printed internal electrode, cut into a predetermined shape, and fired to form an external electrode.