JP2000345081A - Baking ink composition - Google Patents

Abstract

(57) [Abstract] [Problem] To form a rib or the like of a plasma display,
Applying an ink composition containing glass frit or other powders eliminates the occurrence of wind ripples (irregularities in which the mountain ridges are connected in a curved line) when the coating film is dried. When rinsing in water or immersing in an alkaline solution, a part of the rib is removed or the disadvantage of falling down is eliminated. As an example, 100 parts by weight of a low melting point glass powder, 5 to 50 parts by weight of an inorganic filler powder, and 5 to 20 parts of a pigment
Parts by weight of a baking ink composition comprising 1 to 30 parts by weight of a resin, and 20 to 90 parts by weight of a solvent.
5-5 parts by weight and / or coupling agent 0.05-
The problem was solved by adding 5 parts by weight.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a firing ink composition suitable for forming a pattern or film having a large thickness, particularly a pattern having a height higher than a line width.

[0002]

2. Description of the Related Art Various improvements have been made in plasma displays, which have already been put into practical use, because thin and large screens can be easily obtained. Broadly speaking, there are two types of plasma displays: AC type and DC type. In each case, a partition called a rib for generating gas discharge in each minute space is provided between two glass plates constituting the plasma display. Need to be formed. Usually, the ribs in the plasma display are made of a metal oxide such as alumina dispersed in low-melting glass. To form ribs, printing is performed using an ink composition obtained by kneading a low-melting glass powder, an inorganic filler powder, a resin solution dissolved in a solvent, and the like, and using a photosensitive resin instead of the resin solution. After applying the ink composition obtained using, a photosensitive resist called dry film is laminated, exposed and developed to form a resist pattern, and unnecessary parts are removed by sandblasting There is also a way to do it. Instead of applying the ink composition uniformly, an ink composition which has been previously applied on another film may be applied to the glass surface. After pattern formation, it is passed through a firing furnace,
The ribs are formed by burning and removing the resin component and the solvent component and melting the low melting point glass powder.

As described above, a basic material for forming a rib and a method for forming a rib using the same have been established to some extent. However, even when any of the above methods is employed, the printed or applied coating film is dried to such an extent that handling is not hindered (in the final step, separately, at a temperature of about 400 to 600 ° C.). Baking), and drying causes a problem. For example, 12
Since drying is performed at 0 to 200 ° C. for about 30 minutes, the surface of the coating film has a wind-like pattern (a state in which several mountain ridges are connected in a curved line) due to the effect of wind on the coating film during drying. As a result, uniform ribs of a predetermined height cannot be obtained, forming a minute space in the panel of the plasma display,
The function of the ribs for causing gas discharge is incomplete. Even if drying is performed by infrared rays, air suction for removing the evaporated solvent is necessary, and even if the air movement caused by the air suction is a breeze, wind-like gloss unevenness or unevenness is generated. Especially when sandblasting is used, the thickness is 100
When a very thick film having a thickness of about μm is dried, a wind-like glossy unevenness or unevenness tends to occur. These wind-like gloss irregularities or irregularities cause irregularities in the appearance of the back plate of the plasma display panel, and also cause irregularities in the height of the irregularities as they are, which causes problems when bonding with the front plate. This causes a discharge failure when using a plasma display. In addition, when sand blasting is used, the degree of shaving is not uniform, so that the rib width varies. This unevenness is particularly likely to occur when a large amount of powders such as pigments and inorganic fillers serving as aggregates as well as glass frit are blended as powders. In addition, apart from these drawbacks, in the method of performing sandblasting, after performing sandblasting, washing with shower water,
It is necessary to remove the dry film by the action of an alkali solution, and to perform a shower recommendation or the like for the purpose of removing the alkali component. There is a drawback or fall down,
Measures to avoid water penetration as well as improving adhesion are needed.

[0004]

In the present invention, in order to improve the above-mentioned drawbacks of the prior art, one of the reasons is that the wind ripples (mountain ridges) on the surface of the coating film generated when the coating film is dried. It is an object of the present invention to solve the problem of unevenness in a curved shape. Another object of the present invention is to eliminate a disadvantage that a part of a rib generated at the time of washing with water or immersion in an alkaline solution is removed or falls down.

[0005]

Means for Solving the Problems To solve the above problems, a dispersion stabilizer was added to a conventionally used ink composition to eliminate wind-like irregularities generated when a coating film was dried. In addition, by applying the coupling agent to the ink composition, the damage to the ribs during washing with water or alkali immersion was eliminated.

According to the first invention, 100 parts by weight of a low-melting glass powder, 1 to 30 parts by weight of a resin, 20 to 90 parts by weight of a solvent, 0.05 to 5 parts by weight of a dispersion stabilizer and / or a coupling agent 0 The present invention relates to a baking ink composition characterized in that 0.05 to 5 parts by weight are dissolved or dispersed. The second invention comprises 100 parts by weight of a low-melting glass powder, 1 to 30 parts by weight of a liquid ionizing radiation-curable compound,
The present invention also relates to a baking ink composition, wherein 0.05 to 5 parts by weight of a dispersion stabilizer and / or 0.05 to 5 parts by weight of a coupling agent are dissolved or dispersed. According to a third aspect, in the second or second aspect, further, any one of a metal powder, an inorganic filler powder, a conductive substance powder, and a dielectric powder is dissolved or dispersed. The present invention relates to an ink composition for use. A fourth invention relates to the ink composition for baking according to any one of the first to third inventions, wherein the pigment is further dissolved or dispersed. The fifth invention is characterized in that 100 parts by weight of low melting point glass powder, 5 to 50 parts by weight of inorganic filler powder, 5 to 20 parts by weight of pigment,
Characterized in that 30 parts by weight, 20-90 parts by weight of a solvent, 0.05-5 parts by weight of a dispersion stabilizer and / or 0.05-5 parts by weight of a coupling agent are dissolved or dispersed. The present invention relates to an ink composition for use.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION As a resin for a binder used in an ink composition, cellulose derivatives such as ethyl cellulose, hydroxypropyl cellulose, methyl cellulose, nitrocellulose, cellulose acetate, and cellulose butyrate are suitable. Resins, polyvinyl butyral resins, various acrylic resins, or polyester resins (eg, alkyd resins) can also be used.

The solvent used in the ink composition is preferably one having a high boiling point from the viewpoint of handling. Terpenes such as α-, β- or γ-terpineol, ethylene glycol monoalkyl ethers, ethylene glycol dialkyl Ethers, diethylene glycol monoalkyl ethers, diethylene glycol dialkyl ethers, ethylene glycol monoalkyl ether acetates, ethylene glycol dialkyl ether acetates, diethylene glycol monoalkyl ether acetates, diethylene glycol dialkyl ether acetates, propylene glycol monoalkyl ethers, propylene Glycol dialkyl ethers, propylene glycol monoalkyl ether acetates, propylene Glycol dialkyl ether acetates, methanol, ethanol, isopropanol, 2-ethylhexanol, alone alcohol such as 1-butoxy-2-propanol, or optionally used in combination of two or more kinds selected. When using relatively high molecular weight and high viscosity among these,
It is also possible to form an ink by mixing fine particles such as powder without adding a resin.

The above-mentioned resin and high-boiling solvent are selected in consideration of solubility, and then dissolved to form a resin solution, in which various additives and powdery particles are dissolved or dispersed.
Ink composition, but a monomer, oligomer, or prepolymer that is a liquid ionizing radiation-curable compound,
In particular, a monomer or oligomer can be used instead of the resin solution. When an ionizing radiation-curable compound is used, it is crosslinked and cured by irradiation with ionizing radiation. Examples of the monomer include styrene, styrene monomers such as α-methylstyrene, methyl acrylate, and acrylic acid.
2-ethylhexyl, methoxyethyl acrylate, butoxyethyl acrylate, butyl acrylate, methoxybutyl acrylate, acrylates such as phenyl acrylate, methyl methacrylate, ethyl methacrylate,
Propyl methacrylate, methoxyethyl methacrylate,
Ethoxymethyl methacrylate, phenyl methacrylate,
Methacrylates such as lauryl methacrylate, 2- (N, N-diethylamino) ethyl acrylate, 2- (N, N-dimethylamino) ethyl acrylate, 2- (N, N-diacrylate) Benzylamino) methyl,
Unsaturated substituted amino alcohol esters such as 2- (N, N-diethylamino) propyl acrylate, unsaturated carboxylic acid amides such as acrylamide and methacrylamide, ethylene glycol diacrylate, propylene glycol diacrylate, neopentyl glycol Compounds such as diacrylate, 1,6-hexanediol diacrylate, and triethylene glycol diacrylate; polyfunctional compounds such as dipropylene glycol diacrylate, ethylene glycol diacrylate, propylene glycol dimethacrylate, and diethylene glycol dimethacrylate; and / or Polythiol compounds having two or more thiol groups in the molecule, for example, trimethylolpropanetrithioglycolate, trimethylolpropanetrithio Ropireto, pentaerythritol tetra thioglycolate and the like. Examples of oligomers and prepolymers include unsaturated polyesters such as condensates of unsaturated dicarboxylic acids and polyhydric alcohols, polyester methacrylates, polyether methacrylates, polyol methacrylates, methacrylates such as melamine methacrylate, polyester acrylates, epoxy acrylates, and the like. There are acrylates such as urethane acrylate, polyether acrylate, polyol acrylate and melamine acrylate, and cationic polymerization type epoxy compounds. The above-mentioned ionizing radiation-curable compound can be used by adding the above-mentioned resin, and the viscosity can be adjusted. Further, it is possible to prevent the resulting rib from being too hard and brittle.

The low melting glass powder used in the ink composition functions as a binder constituting the rib in the fired rib, and its glass transition point (T
g) must be equal to or higher than the temperature at which the resin in the ink composition completely disappears by firing, and the softening point of the low-melting glass powder is determined when the glass is used as a substrate to form a rib. Must be below the deformation temperature. Usually, the glass transition point of the low melting glass powder is 350 to
500 ° C, softening point 400-600 ° C.

As the dispersion stabilizer used in the ink composition, polycarboxylic acid (aliphatic polycarboxylic acid) or a salt thereof, a phosphoric acid ester, polyaminoamide phosphoric acid or a salt thereof, or polyaminoamide and a polymeric acid polyester Are suitable, and of these,
Surfactants containing a phosphate ester as a main component are particularly preferred in terms of imparting fluidity suitable for application to the ink composition and improving storage stability.

As the coupling agent used in the ink composition, various coupling agents such as a silane coupling agent, a titanate coupling agent, and an aluminate coupling agent can be used. It is preferable to use a silane coupling agent. Examples of the silane coupling agent include vinyltrichlorosilane, vinyltris (β-methoxyethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane,
γ-methacryloxypropyltrimethoxysilane, β-
(3,4-epoxycyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, N-β (aminoethyl) γ-aminopropyltrimethoxysilane, N -Β (aminoethyl) γ-aminopropylmethyldimethoxysilane, γ-aminopropyltriethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, or γ-chloropropyltrimethoxysilane Etc. These silane coupling agents include a reactive group (a methoxy group, an ethoxy group, and the like) that chemically bonds to an inorganic material and a reactive group (a vinyl group, an epoxy group, an amino group, a methacryl group, and the like) that chemically bond to an organic material such as various synthetic resins.
(Mercapto group), and therefore has a strong function of connecting an organic material and an inorganic material, which are usually hardly connected.

A metal powder, a metal oxide powder, a conductive substance powder, a dielectric powder, a pigment, and the like can be added to the ink composition as required by the application. this house,
Metal oxide powder can also be used as an aggregate.

The aggregate plays a role in maintaining the shape and strength of the ribs formed by firing. For example, zircon, zirconia, alumina, titania, silica, titanium oxide,
There are oxide or non-oxide ceramics such as magsia, mullite, cordierite (or cordierite), silicon carbide, aluminum nitride, and barium titanate. Glass also plays the role of aggregate. As the metal powder, aluminum powder used for forming a cathode on the front plate of the plasma display panel, ruthenium used for forming a rib electrode on the back plate, and the like are used.

[0015] As the conductive material powder, gold, silver, copper, chromium, nickel, metal powders such as aluminum, an In ₂ O
₃ / Sn, ZnO / Al, TiO _x , K ₂ O.Ti
There is a conductive inorganic oxide such as O _x or SnO ₂ / Sb.

The dielectric powder can be properly used depending on the magnitude of the dielectric constant, and includes inorganic oxides such as titania, alumina, and zirconia.

A coloring agent may be positively added to the ink composition for the purpose of coloring. In the case of firing, it is desirable to have heat resistance at a temperature higher than the firing temperature, and an inorganic pigment is used. As the pigment, a composite oxide-based pigment composed of an oxide of two or more metals (as the metal,
Cu, Co, Ni, Fe, Mn, Cu, Sb, As, B
i, Ti, Cd, Al, Ca, Si, Mg, or B
Two or more are selected from a and the like. ), Titanium oxide, alumina, silica, magnesia, lead titanate, potassium titanate, cadmium sulfate selenide, red iron oxide (Fe ₂ O ₃ ), cuprous oxide, cadmium mercury red (CdS + HgS), chrome vermillion, silver vermilion, Antimony red, iodine red, zinc iron red, molybdenum red, lead red, cadmium red, chrome green, zinc green, cobalt green, chromium oxide, viridian, emerald green ultramarine, navy blue,
Cobalt blue, cerulean blue, copper sulfide, titanium yellow, titanium black, black iron oxide (Fe ₃ O ₄ ),
Yellow iron oxide, cadmium yellow, or yellow lead can be used, and is appropriately selected and used according to the purpose.

The composition of each component in the ink composition is as follows. The components are basically a resin, a solvent, and a low-melting glass powder in common, and one or both of a dispersion stabilizer and a coupling agent are added to these components. The mixing ratio of each component is as follows.
1 to 30 parts by weight of resin and solvent 2 based on 0 parts by weight
0 to 90 parts by weight, and the dispersion stabilizer 0.05 to 90 parts by weight.
Either 5 parts by weight or 0.05 to 5 parts by weight of the coupling agent is added, or both the dispersion stabilizer and the coupling agent are added.

The meanings of the lower limit and the upper limit of the weight ratio of each component in the above composition will be described below. First, when the amount of the resin is less than 1 part by weight, a sufficient viscosity as an ink cannot be obtained, the transfer of the ink at the time of printing becomes insufficient, and the dispersion of heavy particles having a large particle diameter becomes difficult. If the amount exceeds 30 parts by weight, the viscosity becomes too high, and the ratio of other components is relatively reduced, so that the required performance is not produced or the obtained glass film is only thin. Next, when the solvent is less than 20 parts by weight, not only the resin content becomes relatively excessive and the viscosity becomes too high, but also the drying proceeds rapidly, so that the smoothness of the surface of the ink coating film becomes poor. When the amount of the solvent exceeds 90 parts by weight, a large amount of time is required to dry the ink coating film, and in many cases, heat is required. Deformation after formation is unavoidable, and the cross-sectional shape is not easily sharpened. Further, the thickness of the coating film obtained by one printing is reduced. The low melting point glass powder is 100 parts by weight based on this. In relation to the weight ratio of the resin, when the low melting point glass powder is relatively insufficient, the thickness of the glass film obtained after firing the coating film is insufficient, and when the low melting point glass powder is relatively excessive, it is obtained. Although the thickness of the resulting glass film is increased, the proportion occupied by other additional components is relatively reduced, so that the required performance derived from these additional components cannot be sufficiently obtained. If the dispersion stabilizer is less than 0.05 parts by weight, the dispersion of the glass frit and the components of the powder to be added as required is not stable over a long period of time. May settle down and need to be redistributed each time printing is performed, or settling may occur during printing.Thus, the thickness of the obtained glass film may be reduced, or the performance caused by other powders added may be reduced. In addition, when the ink coating film is dried, there is a disadvantage that unevenness on the coating film surface cannot be prevented, and when the dispersion stabilizer exceeds 5 parts by weight, even if the coating film is dried, the dispersion stabilizer does not remain. Because it remains, the coating after drying softens and finishes firing,
Some dispersion stabilizer remains. 0.05 coupling agent
If the amount is less than part by weight, the effect of preventing the occurrence of irregularities on the coating film surface during drying of the ink coating film is not sufficient, and it is not possible,
Further, it is impossible to prevent the rib from falling down in the steps of washing with water or alkali after drying. On the other hand, when the amount of the coupling agent exceeds 5 parts by weight, the coupling agent remains even when the coating film is dried, so that the coating film after drying is disadvantageously softened.

It has been mentioned above that a metal powder, a metal oxide powder, a conductive substance powder, a dielectric powder, a pigment, and the like can be added to the ink composition of the present invention according to the necessity of use. However, as described below, when manufacturing the back plate of the plasma display panel, it is very effective to apply it for forming ribs. The ink composition for forming a rib is composed of 100 parts by weight of a low-melting glass powder, 5 to 50 parts by weight of an inorganic filler powder, 5 to 20 parts by weight of a pigment,
-30 parts by weight, 20-90 parts by weight of a solvent, 0.05-5 parts by weight of a dispersion stabilizer and / or 0.05-5 parts by weight of a coupling agent. Here, both the dispersion stabilizer and the coupling agent may be used, or only one of them may be used.

The reason why the baked ink composition of the present invention exhibits a good effect is as follows. An ink composition to which neither a dispersion stabilizer nor a coupling agent is added is transferred to a printing medium by printing. For the formed ink film,
When hot air is blown or inhaled to increase the drying efficiency, convection occurs inside the coating film, and the low-melting glass powder and other powders to be added as needed aggregate together near the surface. A lump is formed, thereby forming irregularities on the surface. The same is true whether the drying is by hot air or by infrared rays. When a dispersion stabilizer or a coupling agent is added to the ink composition as in the present invention, these cover the surface of each powder, prevent reagglomeration, and make it difficult to generate irregularities. When a dispersion stabilizer, particularly a dispersion stabilizer containing a phosphate ester compound as a main component, is used, the storage stability of the ink composition is improved, and viscoelasticity suitable for application is given.
It also has the effect of providing a smooth coating surface during transfer. Also,
When a coupling agent, especially a silane coupling agent, is added, the permeation of water or an alkaline solution is suppressed due to its water-repellent effect, and when the printing medium is glass,
By both improving the adhesion between the glass and the ink coating film, it is possible to prevent the rib once formed from falling down due to the action of washing with water or an alkaline solution. In the present invention, it is considered that adding one or both of the dispersion stabilizer and the coupling agent to the ink composition is effective for the above reasons.

The ink composition of the present invention is suitable for forming a transparent glass pattern or a dielectric layer on a glass plate, etc.
By adding a pigment to form a colored pattern, or as described above, adding metal powder or aluminum powder to form a cathode on the front plate of the plasma display panel, adding ruthenium, etc. It can be used for forming a rib electrode on the back plate of a plasma display panel, or for forming a conductive pattern by adding a highly conductive metal powder such as gold, silver, or copper.

[0023]

EXAMPLES (Example 1) In order to study printing on a glass substrate, an ink serving as a base was prepared. (Base ink composition) 100 parts by weight of glass frit (RFB024D1 manufactured by Asahi Glass Co., Ltd.) 14 parts by weight of inorganic filler (Sumicorundum AA-07 manufactured by Sumitomo Chemical Co., Ltd.) Pigment ( Cu-Cr-based) 11 parts by weight (Dainichi Seika Kogyo Co., Ltd., dipyroxide black # 9510)-Ethyl cellulose resin 2 parts by weight (Nissin Kasei Co., Ltd., "STD-100")-Terpineol 21 parts by weight Parts 21 parts by weight of diethylene glycol monobutyl ether acetate Each of the following dispersants A to E is added and mixed at a ratio of 1 part by weight to 100 parts by weight of the base ink composition obtained above. Rib forming ink compositions A to E
I got A: Phosphate ester dispersant (Big Chemie Co., Ltd.)
B: Unsaturated polycarboxylic acid-based dispersant (manufactured by Big Chemie, BykP104) C: Aliphatic polyvalent carboxylic acid-based dispersant (Kusumoto Kasei Co., Ltd., Disparon 2150)・ D: Phosphate ester dispersant (Toho Chemical Industry Co., Ltd.)
E; Phosphoric ester dispersant (Bernd Schw)
Egmann, Schwego Wet8076) On a glass plate, the above-described ink compositions A to E for forming a rib were
Using a blade coater and applying with a gap of 370 μm, and drying in an oven set at 140 ° C. for 25 minutes, the surface was very smooth and no matter when any of the rib-forming ink compositions was applied. No occurrence was observed. For comparison, when the base ink composition was used, generation of wind ripples was confirmed on the surface.

(Example 2) To 100 parts by weight of the same base ink composition as used in Example 1, 1% by weight of the following coupling agent F was added and mixed to obtain a rib-forming ink composition F. Obtained. F: γ-methacryloxypropyltrimethoxysilane (KBM503, manufactured by Shin-Etsu Chemical Co., Ltd.) A rib pattern was printed on a glass plate using the above-described ink composition F for forming a rib by a screen printer. Then, it was dried in an oven set at 140 ° C. for 10 minutes. After drying in an oven, a 1.5% by weight aqueous solution of NaOH was immersed in a solution heated to 40 ° C. for 10 minutes, and then rinsed with pure water and sprayed with air to remove moisture. did. In any case of printing with any of the rib-forming ink compositions, the rib pattern was not peeled off by alkali immersion. For comparison, when the base ink composition was used as it was, the rib pattern was peeled off by alkali immersion.

Example 3 A 100 parts by weight of the same base ink composition as in Examples 1 and 2 was mixed with a phosphate ester-based dispersant (Disperby, manufactured by BYK Chemie).
k111) and 1 part by weight of γ-methacryloxypropyltrimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., silane coupling agent, KBM503) were added and mixed to obtain a rib-forming ink composition. Thereafter, printing, drying, and alkali immersion were performed in the same manner as in Example 2. No wind ripple was generated by drying after printing, and the rib pattern was not peeled off by the subsequent alkali immersion.

[0026]

According to the ink composition of the first invention, since a dispersion stabilizer and / or a coupling agent is added, even when dried after printing or coating, wind-like irregularities are formed on the surface. Does not occur. When only a coupling agent is used without a dispersion stabilizer, the adhesion between the pattern and a substrate such as a crow is improved. Furthermore, when both a dispersion stabilizer and a coupling agent are used,
The effect when each is used independently is exhibited. According to the second invention, since the resin and the high boiling point solvent in the first invention are replaced with an ionizing radiation curable compound, a coating film printed or applied by irradiation with ionizing radiation instead of heating and drying. Can be solidified. According to the third invention, in addition to the effects of the first or second invention, various physical properties are imparted to the formed coating film or pattern by adding a powder having performance according to the application. can do. According to the fourth invention, the first to first aspects
In addition to the effects of the third aspect, a variety of appearance patterns colored by pigments can be obtained. According to the fifth invention, an optimal ink composition for a plasma display panel to which a powder of a metal oxide is added, and further a dispersion stabilizer and a coupling agent are added, is obtained. The resulting rib has excellent smoothness at the top,
Also, when glass is used as the substrate, the adhesion is excellent.

Continued on the front page (72) Inventor Yozo Kosaka 1-1-1 Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. 4J011 PA15 PB06 PB40 PC02 QA03 QA06 QA08 QA09 QA13 QB14 QB15 QB19 QB24 UA04 VA01 VA10 WA05 4J039 AB02 AD06 AD07 AD09 AE06 BA06 BA12 BA20 BA25 BC07 BC13 BC14 BC15 BC19 BC36 BC56 BC57 BC59 BC63 BE01 BE12 BE22 FA04 GA34

Claims (5)

[Claims] 1. 100 parts by weight of low melting glass powder, resin 1
Characterized in that 30 parts by weight, 20-90 parts by weight of a solvent, 0.05-5 parts by weight of a dispersion stabilizer and / or 0.05-5 parts by weight of a coupling agent are dissolved or dispersed. Ink composition. 2. 100 parts by weight of a low-melting glass powder, 1 to 30 parts by weight of a liquid ionizing radiation-curable compound, and
An ink composition for firing, wherein 0.05 to 5 parts by weight of a dispersion stabilizer and / or 0.05 to 5 parts by weight of a coupling agent are dissolved or dispersed. 3. The method according to claim 1, further comprising a metal powder, an inorganic filler powder,
3. The firing ink composition according to claim 1, wherein either the conductive material powder or the dielectric powder is dissolved or dispersed. 4. The firing ink composition according to claim 1, wherein the pigment is further dissolved or dispersed. 5. Low melting point glass powder 100 parts by weight, inorganic filler powder 5 to 50 parts by weight, pigment 5 to 20 parts by weight, resin 1 to 30 parts by weight, solvent 20 to 90 parts by weight, and dispersion stabilizer 0 An ink composition for baking, wherein 0.05 to 5 parts by weight and / or 0.05 to 5 parts by weight of a coupling agent are dissolved or dispersed.