JP2000158786A - Method and apparatus for directly printing, material to be printed and ink composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a direct printing technology which is low in cost and easy in handling, capable of dealing with various type printing requests. SOLUTION: In the case of conducting a direct print by applying a pressure to an intaglio and a material to be printed to bring the intaglio into close contact with the material and transferring an ink filled in the intaglio onto the material, the material having a receptive adsorption layer 3 for receiving and adsorbing the ink 4 by the close contact with the intaglio 1 is used. After the ink 4 is transferred to the material, the material is baked to thermally decompose the layer 3 of the material and to remove the layer 4, and hence a printing pattern is formed on a base plate 2 of the material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing technique suitable for high-precision printing of, for example, a printed circuit board or a part of an image display device, and more particularly, to a high-definition printing using a low-viscosity ink. The present invention also relates to a direct printing method and apparatus capable of three-dimensionally transferring and printing a pattern of a plate onto a printing material with high accuracy, an ink composition and a printing material used therefor.

[0002]

2. Description of the Related Art In recent years, a thin flat plate-shaped image forming apparatus has attracted attention as an image forming apparatus replacing a large and heavy cathode ray tube. In addition, various display devices have a large screen, and a printing technique has been attracting attention as a means for forming such phosphors, electrodes, color filters, and the like.

Conventionally, as a method of forming a fine pattern,
A method using a photolithography method, a printing method using screen printing, offset printing, direct printing, or the like is used. For example, when forming fine-patterned wiring, the photolithography method first forms a conductive layer, forms a resist layer thereon, exposes and develops this resist layer, and etches the conductive layer where there is no resist layer. Then, the remaining resist layer is peeled off.

[0004] The printing method is suitable for forming a large-area pattern, and is also advantageous in cost. For example, in forming an electrode for an image display element by a printing method, an offset printing technique suitable for forming a thin film is suitable.
An example in which this offset printing technique is applied to a circuit board is disclosed in JP-A-4-290295. In the substrate disclosed in this publication, the angles of a plurality of bonding electrodes connected to circuit components are changed in order to eliminate bonding defects due to variations in electrode pitch dimensions due to pattern expansion and contraction during printing. Japanese Patent Laid-Open No. 4-2
No. 90295 describes that an electrode pattern is formed by offset printing.

Hereinafter, a general offset printing apparatus and a printing method for forming an electrode pattern, a color filter and the like will be described. FIG. 7 is a view showing a conventional flat-bed proofing machine type offset printing apparatus which performs an offset printing method. In FIG. 1, reference numeral 101 denotes an ink kneading table for developing ink 107 by an ink roller 104;
Is a plate surface plate for fixing the intaglio 105. Reference numeral 103 denotes a work surface plate for fixing a work 106 which is a printing medium, and is fixedly arranged on the main body frame 108. Two rack gears 1 on both sides of the three platens arranged in a row
09 and 110 are arranged, and a blanket 113 in which the gears 111 and 112 are engaged is arranged on the rack gears 109 and 110. The blanket 113 has its axis connected to the carriages 114 and 115 at both ends.
The carriages 114 and 115 are moved forward and backward by the crank operation of the crank arm from the lower part of the main body, whereby the blanket 113 is rotated and slid on the ink mixing table 101, the intaglio 105 and the work 106 in order. A rubber-like blanket rubber is attached to the surface of the blanket 113. The position information of the ink pattern printed on the work 106 is captured by an alignment scope, and the work 106 is aligned at a predetermined position by fine adjustment of the work surface plate 103 every time the work is replaced.

FIGS. 8A to 8D are views showing an offset printing process. In the figure, 101 is an ink mixing table,
Reference numeral 105 denotes an intaglio, and reference numeral 106 denotes a glass substrate serving as a work, which are arranged in series on the same plane. 10
Reference numeral 4 denotes an ink roll which transfers the ink 107 kneaded on the ink kneading table 101 onto the intaglio 105 (FIG. 8).
(A)). Reference numeral 117 denotes a blade which slides on the upper surface of the intaglio 105 and scrapes out the transferred ink 107 other than the ink filled in the concave portion (FIG. 8B). Reference numeral 113 denotes a blanket, which includes an intaglio 105 and a glass substrate 106.
8 in rotation, the ink filled in the concave portions of the intaglio 105 is received (FIG. 8C), and the ink 107 is transferred onto the glass substrate 106 in the pattern of the intaglio 105 (FIG. 8). (D)).

Thus, the printing process is completed. The printing ink 107 can be appropriately selected depending on the function of the pattern to be manufactured. That is, ink containing organic Au metal called Au resinate paste is mainly used for an electrode pattern of a recording thermal head or the like, and R, G, and B color pigments are used for a color filter used in a liquid crystal display device or the like. Dispersed inks, inks combining organic dyes, and the like are used.

[0008]

However, the conventional printing method and the enlargement of the screen area of the flat-panel image display device as described above have the following problems. That is, the photolithography method has a complicated process and poor productivity, and when the conductive layer is formed by sputtering or the like,
The efficiency of the direct material is about 30%, and the cost is high.

According to screen printing, the process can be simplified, but it is difficult to form a fine pattern, for example, a line and space of 50 μm or less, so that a high-definition pattern cannot be obtained. In addition, the physical properties required of ink also require that the viscosity at the shear rate during printing must be several hundred to several thousand poise in order to keep the printing shape at a certain level in thick film printing, and finally the shape is formed If the active ingredient to be used has a relatively low viscosity, it is necessary to incorporate a considerable amount of a resin component or the like as a vehicle. For this reason, for example, even when a product having a required shape is obtained by baking a pattern after printing, these resin components remain, and pores generated at the time of burning and decomposition of the resin component cause the final product. In many cases, the surface shape is poor.

According to the offset printing, it is difficult to form a line and space of 10 μm or less as in a photolithography method, but a fine pattern of 10 to 50 μm line and space can be formed. However, in offset printing, a transfer material is transferred from an intaglio in which a transfer material (ink or the like) is filled in a pattern portion onto a resin lithographic plate called a blanket, and further transferred from the blanket to a substrate of a material to be transferred. Therefore, if the durability of the blanket with respect to ink or the like is not very high, the blanket is easily deteriorated and transferability is deteriorated. In order to minimize this deterioration, when adjusting the ink composition to have physical properties suitable for offset printing, it is necessary to carefully confirm the compatibility between the solvent to be added and the blanket to be used. . In addition, if a solvent that affects the blanket is absolutely necessary to satisfy the required printability, the content of the solvent must be minimized. Such compatibility / adjustment of the members is required for each physical property of the ink to be used.

According to the direct printing, since the members do not change with time as compared with other printing methods, the durability is high, and there is almost no deformation of the printing shape or displacement. Therefore, it is the most suitable printing method for high precision printing. However, since the direct printing method uses a rigid cylindrical or flat intaglio, an impact occurs when the intaglio comes into contact with the substrate, and the substrate or the intaglio itself is damaged or damaged. Sometimes printing is not possible. In addition, a rigid cylindrical intaglio plate and a flat substrate such as glass have a problem that transferability is poor because a contact portion becomes a line and a nip width cannot be obtained.

That is, in various types of printing which are inexpensive and highly productive, the ink used is limited in the range of viscosity and other physical properties in order to secure printability depending on the printing method and members, and the composition required for that purpose is limited. You need to mix things. As a result, the content of the active ingredient is reduced. Further, the composition of the composition for improving printability and the composition for generating functions, that is, the compatibility of the active ingredient affects the performance of the ink, so that the form of the active ingredient is also limited.

Therefore, when the conventional printing methods are used, the inks are restricted by those methods, so that the shape and performance of the completed pattern may not be able to sufficiently exhibit the properties of the original active ingredient. is there. Also, in order to balance the performance of the active ingredient and printability,
Conversely, ideal printability cannot be achieved, which may cause print drooling or shape defects. For this reason, high-performance, high-definition printing is actually very difficult.

When various wiring boards and wiring parts of the above-described image display device are manufactured by using such a printing method, the printability is not stable, and the shapes and thicknesses of the patterns vary. If printing failure occurs, it will affect the resistance of each part as it is, and the characteristics as wiring or electrodes will not be uniform,
It is prone to defects such as short circuits. In particular, in the case of a large-sized image display device, since the wiring distance is relatively long, a more reliable uniform wiring is required. In view of the problems of the prior art, an object of the present invention is to provide a composition of a necessary active ingredient which has a low viscosity and does not satisfy printability as it is, without any adjustment or by making some adjustments. To provide printing technology that can be used as an ink composition and that can accurately print the pattern shape of a plate on a printing substrate, and can meet various printing requirements such as high-precision printing. And a direct printing method and apparatus which are easy to handle.

[0015]

In order to achieve this object, a printing medium according to the present invention is arranged such that the intaglio and the printing medium are brought into close contact with each other by applying pressure so that the ink filled in the intaglio printing is printed on the printing medium. A printing material used when direct printing is performed by transferring the ink to a printing medium, the printing material being provided with a receiving / adsorbing layer that receives and adsorbs the ink by close contact between the intaglio plate and the printing material.

In the direct printing method of the present invention, the intaglio plate and the printing substrate are brought into close contact with each other by applying pressure.
In the direct printing method for transferring the ink filled in the intaglio onto a printing material, the printing material of the present invention as described above is used as the printing material.

Further, the direct printing apparatus of the present invention is directed to a direct printing apparatus for transferring the ink filled in the intaglio onto a printing material by applying pressure to the intaglio printing plate, which is a penetrating printing plate, and bringing the printing material into close contact. An ink agitating means for agitating the ink in the ink reservoir under the intaglio and a monitor means for monitoring the state of the ink, wherein the printing material of the present invention as described above is used as the printing material. Further, the ink composition of the present invention is used as an ink in the direct printing method of the present invention as described above.

According to the present invention, the possibility of printing by the direct printing method is expanded by providing the receiving / adsorbing layer on the printing material, so that it is possible to meet various printing requirements such as high-precision printing. become. In particular, by making the receiving and adsorbing layer have a high cushioning property, the composition having a low viscosity and not satisfying printability as it is, containing a necessary active ingredient at a high concentration, can be adjusted without adjustment or slightly adjusted. It can be easily used as an ink composition simply by adding it, and the pattern shape of the intaglio can be printed on the printing substrate with high accuracy. Further, since the direct printing method is used, the consumption of the ink composition is kept to a minimum, and inexpensive printing is performed.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 are diagrams schematically showing a direct printing method according to an embodiment of the present invention. In these figures, 1 is an intaglio, 2 is a substrate,
Reference numeral 3 denotes a receiving / adsorbing layer formed on the surface of the substrate 2 and receiving and adsorbing the ink composition 4 by close contact with the intaglio 1. 1A shows a state in which a water-repellent coat 5 is formed on the intaglio 1, FIG. 1B shows a state in which the substrate 2 is coated with the adsorption receiving layer 3, and FIG. 1C shows a line in the adsorption receiving layer 3. FIG. 2 (a) shows a state in which a cured portion 6 is provided in an intaglio form, and FIG.
2 (b) is a state in which excess ink composition is removed and an appropriate amount of ink is left in the recesses of the intaglio 1, and FIG. 2 (c) is a state in which the ink receiving layer shown in FIG. The substrate 2 provided with the substrate 3 is superimposed on the intaglio 1 appropriately filled with the ink shown in FIG. 2 (b), and FIG. FIG. 3B shows a state where the required amount of the ink composition 4 is received by the receiving layer 3.
(C) shows how the substrate 2 is removed from the plate 1.

The intaglio 1 is an ordinary intaglio or stencil.
For example, a copper having a thickness of several mm may be etched to form a desired pattern and then subjected to chromium treatment, or a general intaglio made of aluminum, glass, or the like. For example, when forming by etching on copper, copper is plated on aluminum by several hundred μm, and the copper is patterned and finally processed by chromium treatment.

As the substrate 2, blue plate glass, silica glass, other various glass materials, ceramics, and other general substrates are used. Alternatively, a heat-resistant plastic having dimensional stability and rigidity may be used. In such a case, for example, it may be in the form of a sheet, and specific examples include biaxially stretched polyester, cellulose triacetate, polycarbonate, and polyvinyl chloride. If, after printing, the receptive adsorption layer 3 is burned off through a heating process, a substrate made of a material that is less affected by the temperature of the process is selected. The above substrate is not limited in thickness and the like as long as the smoothness of the surface to be printed is good.

As the adsorption receiving layer 3 formed on the surface of the substrate 2, a layer which easily absorbs the ink composition 4 is used. Therefore, it is preferable that the ink composition contains a lot of components that are familiar with the ink composition 4. A polymer, a filler, a liquid organic compound, and the like are appropriately selected and mixed, applied to the substrate 2 by any method, and dried to be formed. Specific constituents include, for example, organic fillers such as acrylic resin, melamine resin, and polyolefin resin, and fillers of inorganic materials such as silica sol, alumina sol, talc, clay, and calcium carbonate. Further, polyvinyl alcohol, polyvinylpyrrolidone, gelatin, methyl methacrylate, ethyl methacrylate, hydroxymethacrylate, polyethyleneimine, polyacrylamide, N-methylolacrylamide, polyvinyl acetal, polyethylene oxide and other copolymers or polymers, or a mixture thereof is used as a binder. Alternatively, it is used as a main component. As the resin component, a UV-curable resin can be used.

When the ink composition 4 is fired after printing, if necessary, the ink composition is thermally decomposed at a temperature lower than the firing temperature, and finally, the ink composition that does not remain on the substrate 4 is selected. Adsorbing layer 3 not remaining on substrate 4
It can also be. In this case, it is necessary to have a configuration that does not include an inorganic material such as the above-described filler.Also, depending on the temperature of the firing step, an organic compound that is particularly resistant to heat, such as an organic filler, is also used. It is necessary to determine whether this is possible. In addition, the ink composition 4
A surfactant such as an acetylene glycol nonionic surfactant (specifically, acetylol EH / manufactured by Kawaken Fine Chemical Co., Ltd., etc.) may be added in order to improve the permeability and wettability of the polymer. .

As a method for forming the receptive adsorption layer 3, a liquid organic compound is added to 100 parts by weight of the above-mentioned functional material.
About 100 parts by weight of the mixture is mixed and applied to the substrate 4. As a coating method, spin coating, wire bar coating, roll coating, gravure coating, air knife coating, die coating, or the like is appropriately selected. After the application, it is dried to form the receiving and adsorbing layer 3. Any drying method may be used, but it is preferable that the receiving and adsorbing layer 3 be left soft as appropriate so that the receiving and adsorbing layer 3 does not dry and harden during printing. It is generally dried in an oven or the like at a temperature of 100 ° C. or lower for several minutes to 10 minutes, but is not limited to this. When a UV-curable resin or the like is used, it is also possible to apply and dry the entirety or a part of the receptor layer 3 by UV curing.

After drying, the thickness of the receiving and adsorbing layer 3 is adjusted to 1 μm to several hundred μm in a printing state.
If the thickness is smaller than 1 μm, the cushioning property, which is an effective property of the receiving and adsorbing layer 3, is lost, and good printing cannot be performed. Also, several hundred μ
If the thickness is larger than m, the ink composition 4 tends to remain on the outermost surface layer of the receiving and adsorbing layer 3 during printing. In some cases, the adhesiveness with the ink may not be sufficient, and good printability may be lost, causing a problem. However, the receiving adsorption layer 3
This is not always the case in the step of finally leaving

The thickness of the receptive adsorption layer 3 and the degree of drying, as well as the material of the substrate 2 and the smoothness of the surface to be printed have an influence on the printing member such as printing or plate to be performed. When selecting a substrate 2 and / or plate 1 that is hard and fragile such as glass or ceramic, or when the smoothness is low, it is desirable that the receptive adsorption layer 3 is thick and low in a dry state. At this time, the receiving / adsorbing layer 3 is located between the plate 1 and the substrate 2 and acts as a cushion when pressure is applied to both in the process, giving a sinking margin by its thickness, and the softness of the cushion by its undried state. Will be responsible.

On the other hand, when the substrate 2 and / or the plate 1 are made of a relatively soft material or have a high smoothness, the receiving / adsorbing layer 3 becomes less critical than in the case described above. If necessary, the receiving and adsorbing layer 3 may have a structure of two or more layers. For example, the receptive adsorbent layer 3 that exhibits good receptive adsorbability to the substrate 2 and the ink composition 4
For example, in the case where the adhesion or adhesion to the substrate 2 is not good, it is also possible to pre-coat the substrate 2 with the adhesive layer of both, and then coat the highly effective receptive adsorption layer 3 afterwards. In addition, before the substrate 2 is coated with the receiving / adsorbing layer 3, the surface to be printed of the substrate 2 may be subjected to a corona discharge treatment, a UV irradiation, or other various methods.

As the printing ink composition 4, a commercially available color filter material, various wiring materials, and various inks according to required printing are used. These can be used as they are commercially available, or can be adjusted to the optimum as an active ingredient. If necessary, a metal complex and various solvents may be mixed and prepared. At this time, the ink composition 4 only needs to have a low viscosity to some extent, and it is almost necessary to adjust critical physical properties to satisfy the printability limited by the printing method as in the ink compositions used in various conventional printings. There is no.

Specifically, the viscosity may be about 1 mP (millipoise) to several hundred P (poise). It is more preferable that the pressure is about 1 cP (centipoise) to about 100 P.
If the viscosity is higher than this range, the ink is less likely to be absorbed or / and adsorbed on the receiving / adsorbing layer 3 provided on the printing material, and the features of the direct printing according to the present invention may not be utilized. If the viscosity is too low, the absorbed or / adsorbed ink composition may quickly diffuse in the receiving / adsorbing layer 3 or the once absorbed / adsorbed ink composition may be removed from the atmosphere by evaporation. There is a high possibility that it will spread inside. When the ink composition is used after being adjusted, a so-called vehicle that has been conventionally added to improve printability is omitted from the constituent components, and the viscosity is easily adjusted to the above-described viscosity range by reducing the amount. be able to.

In this configuration, at the time of printing, first, as shown in FIG. 1A, a water repellent treatment is performed on the intaglio 1 to form a water repellent coat 5. Next, FIG.
As shown in FIG. 1B, the substrate 2 is coated with the adsorption receiving layer 3, and as shown in FIG.
The cured portion 6 is provided in a line shape. Next, as shown in FIG. 2A, the ink composition 4 is excessively supplied to the intaglio 1 and the excess ink composition is removed as shown in FIG. And leave a suitable amount of ink.
Next, as shown in FIG. 2 (c), the substrate 2 provided with the adsorption receiving layer 3 of FIG. 1 (b) is superimposed on the intaglio 1 of FIG. As shown in (a), the intaglio 1 and the substrate 2 are brought into close contact with each other by applying pressure, whereby the ink receiving layer 3 receives a required amount of the ink composition 4.
After transferring the required amount of the ink composition 4 to the substrate 2, FIG.
The substrate 2 is removed from the plate 1 as shown in (b) and (c). Thereafter, the substrate 2 is fired.

According to this, the receiving and adsorbing layer 3 for receiving and adsorbing the ink composition 4 is previously formed on the substrate 2 to prepare a printing material, and the intaglio 1 and the printing material which have been filled with the ink composition 4 in advance. And by applying moderate pressure,
The ink composition is transferred onto a printing substrate and printing is performed. Therefore, since the receiving and adsorbing layer 3 of the ink composition 4 exhibits a cushioning property, the printing plate 1 and the printing material come into soft contact with each other and printing is performed without damaging the printing plate 1 and the printing material, even in direct printing. Becomes possible. Further, the ink is fixed by the receiving and adsorbing layer 3. Therefore,
Unlike the conventional printing, it is not necessary to finely adjust the physical properties of the ink to improve the printing properties, and it is possible to obtain good printing.

FIGS. 4 to 6 are views schematically showing a direct printing method according to another embodiment of the present invention. As shown in these figures, in this printing method, a water-repellent coat 5 is provided by a water-repellent treatment (FIG. 1).
Neither (a)) nor the provision of the cured portion 6 in the receiving and adsorbing layer 3 (FIG. 1 (c)). Other points are the same as those in the first embodiment shown in FIGS. FIG. 6C shows the substrate 2 having the required amount of the ink composition 4 received by the adsorption receiving layer 3 as shown in FIG.
Is fired to remove the receiving adsorption layer 3.

[0033]

Next, the present invention will be described with reference to examples.
Note that the following examples do not limit the present invention. (Embodiment 1) Printing is performed according to the steps of FIGS.
Thereafter, the printing pattern was fired. That is, first, L / S = 100 on blue sheet glass (300 × 350 × 3.0 mm).
A line-shaped pattern was formed at / 290 μm to form an intaglio. The depth of the concave portion was 35 μm, and only the surface of the plate was subjected to a water repellent treatment with a fluorine-based resin (FIG. 1A).

Next, a silicate glass substrate (300 × 350 ×
(1.8 mm) was ultrasonically cleaned with pure water. Then, 10 parts by weight of a copolymer of N-methylolacrylamide, methyl methacrylate, and hydroxyethyl methacrylate (monomer composition ratio: 20:30:50) and triphenylsulfonium trifluoromethylsulfonate (specifically, , Midori Kagaku TPS-105)
Was well mixed and applied to the glass substrate by spin coating. This substrate was dried at 90 ° C. for 5 minutes to form a receptor adsorption layer on the substrate (FIG. 1B).

Next, a hard chrome mask (L / S / = 30/100) was prepared as a photomask, and exposure was performed using the hard chrome mask to provide a line-shaped cured portion on the receiving / adsorbing layer ( FIG. 1 (c)).

The above intaglio was excessively filled with ink by curtain coating (FIG. 2 (a)). The inks are dyes (CI Acid Red 118, CI Acid
Green 25, C.I. I. Acid Blue 11
3) is dispersed in a resin (a self-crosslinking thermosetting resin mainly composed of an acryl-silicone graft polymer), and a solvent (isopropyl alcohol, ethylene glycol, N-
Methyl-2-pyrrolidone, polyethyleneimine, ion-exchanged water) and a surface tension modifier (acetylenol) added thereto.
dyne / cm. Thereafter, the plate was vibrated to shake off excess ink, and only the concave portions of the plate were filled with the ink composition (FIG. 2 (b)).

Next, a glass substrate having the intaglio plate provided with the receiving and adsorbing layer is overlaid with sufficient alignment between the concave portion of the plate and the uncured portion of the receiving and adsorbing layer (FIG. 2C). The whole was press-bonded by applying a predetermined pressure with a roller (FIG. 3
(A)). Thereafter, the plate and the substrate were removed (FIG. 3 (b),
(C)).

The steps from filling of the ink (FIG. 2 (a)) to press-fitting and removing the plate and the substrate (FIG. 3 (c)) are described in C.I.
I. Acid Red 118, C.I. I. Acid Gr
een25, C.I. I. Repeat once for each ink of Acid Blue 113 for a total of three times
Line B was printed.

Next, the printed substrate is kept at 180 ° C. for 2 hours.
After holding for 0 minutes, a line pattern was formed. After that, when the substrate was observed with an optical microscope, each line was
It was formed uniformly and accurately.

Example 2 A line was printed under the same conditions as in Example 1 except that the following inks were used, and a line pattern was formed. The ink used was a pigment (C.I.
I. Pigment Red 177, C.I. I. Pigme
nt Green 36, C.I. I. Pigment Bl
209) with ethyl cellosolve (methyl methacrylate, hydroxyethyl methacrylate, N-methylolacrylamide, triphenylsulfonium hexafluoroantimonate)
And a solvent (isopropyl alcohol, ethylene glycol, N-methyl-2-pyrrolidone, glycerin, ion-exchanged water, etc.) added as necessary to improve the ink jet suitability, etc. It is obtained by adding ADEKANOL B) manufactured by Denka Kogyo Co., Ltd., and has a surface energy of 39 dyne / cm. When the completed pattern was observed with an optical microscope, the line pattern of each color was uniformly and accurately patterned.

Comparative Example 1 Formation of Receptive Adsorption Layer (FIG. 1)
(B)) and formation of a line-shaped cured portion (FIG. 1)
(C)) is not carried out, so that printing is performed under the same conditions as in Example 1 except that a sufficient alignment between the concave portion of the plate and the uncured portion of the receiving / adsorbing layer is not required, and an attempt is made to form a line pattern. Tried.

However, the intaglio and the silicate glass substrate are superimposed,
When the same pressure was applied as in Example 1 (FIG. 3A), the substrate and the intaglio were cracked. Therefore, printing could not be performed.

(Comparative Example 2) A line pattern is formed by printing under the same conditions as in Comparative Example 1 except that the pressure when the intaglio and the silicate glass substrate are overlaid and pressed (FIG. 3A) is reduced. Tried.

In the process, a line pattern was formed. However, when the completed substrate was observed with an optical microscope, each line was extremely blurred and crushed, and eventually a pattern required for performance was not obtained. Was. Table 1 summarizes the results of the examples and the comparative examples.

[0045]

[Table 1]

[0046]

As described above, according to the present invention, the receiving and adsorbing layer is provided on the printing material, and the direct printing is performed on the receiving and absorbing layer. It can respond to various printing requests such as precision printing. For example, it is possible to perform high-precision printing in a short time even if ink that does not strictly pursue printability is used.

Therefore, precision printing using a high-performance ink composition without complicated adjustment becomes possible, and printing for forming a color filter for a liquid crystal, a printed board, a high definition wiring, and the like can be performed. At this time, since the direct printing method is used, the consumption of the ink composition can be kept to a minimum.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a part of a process according to a direct printing method according to an embodiment of the present invention.

FIG. 2 is a view showing another part of the process of FIG. 1;

FIG. 3 is a view showing still another part of the process of FIG. 1;

FIG. 4 is a diagram illustrating a part of a process according to a direct printing method according to another embodiment of the present invention.

FIG. 5 is a view showing another part of the process of FIG. 4;

FIG. 6 is a view showing still another part of the process of FIG. 4;

FIG. 7 is a view showing a conventional flatbed proofing machine type offset printing apparatus that performs an offset printing method.

FIG. 8 is a diagram showing an offset printing step.

[Explanation of symbols]

1: intaglio, 2: substrate, 3: receiving and adsorbing layer, 4: ink composition, 5: water-repellent coating, 6: cured portion, 104: ink roll, 105: intaglio, 106: work (glass) to be printed Substrate), 107: ink, 113: blanket, 117: blade.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazunari Yonemoto 3-30-2 Shimomaruko, Ota-ku, Tokyo F-term within Canon Inc. (reference) 2H113 AA01 AA03 AA05 AA06 BA03 BB07 BB09 BB22 BC09 DA47 DA57 DA58 EA12 FA10 FA36 FA43

Claims (11)

[Claims] 1. A printing material used when direct printing is performed by transferring the ink filled in the intaglio printing onto the printing material by applying pressure to the intaglio printing plate and bringing the printing material into close contact. And a receiving and adsorbing layer for receiving and adsorbing the ink by the close contact between the intaglio plate and the to-be-printed material. 2. The apparatus according to claim 1, further comprising a rigid substrate, on which the receiving and adsorbing layer is formed.
Printed matter described in 1. 3. The receiving adsorption layer according to claim 2, wherein the substrate has flexibility to prevent the substrate from being broken by pressure when the intaglio plate and the printing material are brought into close contact with each other. Substrate. 4. The printing substrate according to claim 1, wherein the receiving and adsorbing layer is removed by thermal decomposition after the transfer of the ink. 5. When the pattern of the transferred ink is baked after the transfer of the ink, the receiving and adsorbing layer is thermally decomposed at a temperature lower than the calcination temperature and does not remain on the printing material. 5. The method according to claim 4, wherein
Printed matter described in 1. 6. A direct printing method in which an intaglio and a printing material are brought into close contact with each other by applying pressure to transfer the ink filling the intaglio onto the printing material, wherein the printing material is used as a printing material. A direct printing method characterized by using such a printing material. 7. The ink has a viscosity of 1 cP to 10 cP.
7. The direct printing method according to claim 6, wherein the direct printing method is used. 8. After the transfer of the ink onto the print substrate, the print substrate is baked to thermally decompose and remove the receiving and adsorbing layer of the print substrate to form a print pattern on the substrate of the print substrate. The direct printing method according to claim 6, wherein the direct printing is performed. 9. The printing method according to claim 6, wherein a penetrating printing plate is used as the intaglio plate, and printing is performed while stirring the ink in the ink pool under the intaglio plate and monitoring the state of the ink. Or the direct printing method according to item 1. 10. A direct printing apparatus for transferring an ink filled in an intaglio plate onto a print substrate by applying pressure to the intaglio plate, which is a through-plate, and bringing the print substrate into close contact with the print substrate. A direct printing apparatus comprising an ink stirring means for stirring the ink in the pool and a monitoring means for monitoring the state of the ink, and using the printed material according to any one of claims 1 to 5 as a printed material. 11. An ink composition used as an ink in the direct printing method according to any one of claims 6 to 9.