JPH05309963A - Intaglio for printing and method for printing - Google Patents

Abstract

PURPOSE:To obtain an intaglio for printing and a method for printing with a fine pattern with a fine line width CONSTITUTION:Projected parts 2 made of a silicone rubber are formed on a substrate 1 and a releasing layer 4 made of a fluoro-type releasing material is formed on the substrate 1 in recessed part 3 between the projected parts 2 to form an intaglio for printing and a thermoplastic ink 5 is filled in the recessed parts 3 under heating and an objective body to be printed 7 is brought into contact with it under pressure and the thermoplastic ink 5 is cooled and the objective body to be printed 7 is separated to print the objective body to be printed. The objective body to be printed 7 is adhered thereby with the molten thermoplastic ink 5 and the solidified hot-bound ink 5 is released from the recessed parts 3 and the whole amt. of the thermoplastic ink 5 can be transferred and printed on the objective body to be printed 7 and as the result, a fine pattern with a fine line width can be printed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing intaglio and a printing method for printing a fine pattern such as a color filter of a liquid crystal display or a wiring material of a high-density mounting circuit board by an intaglio printing method.

[0002]

2. Description of the Related Art In recent years, in the field of electronics such as color filters for liquid crystals and high-density mounting circuit boards, it has become indispensable to miniaturize patterns to be formed and to increase the area of a pattern-formed substrate. Although fine pattern formation has made great progress with photolithography technology, there is a problem that the manufacturing cost is high, so the patterning accuracy is inferior to photolithography, but the printing method is attracting attention as a technology that can form a large area fine pattern at low cost. Has been done.

A conventional intaglio plate for printing and a printing method will be described below with reference to FIGS. 3 and 4.

FIG. 3 shows a conventional intaglio offset printing method. In the figure, 8 is a glass printing intaglio plate in which a recess 8a is formed by etching a glass base material, and 10 is a silicone rubber which is excellent in ink releasability. A transfer roll for intaglio printing, 7 is a material to be printed, 9 is a scraper, and 5 is ink.

In the intaglio offset printing consisting of the above-mentioned members, after the ink 5 is filled in the recesses 8a of the intaglio printing plate 8 by the scraper 9, the intaglio printing transfer roll 10 is rotated on the printing intaglio plate 8 while applying a printing pressure. The fine wiring pattern is transferred onto the intaglio printing transfer roll 10, and the intaglio printing transfer roll 10 is rotated on the object 7 to be printed while printing pressure is applied to perform printing (the Institute of Electronics, Information and Communication Engineers PCM90.
-24).

FIG. 4 shows a conventional lithographic offset printing method. In the figure, 11 is a silicone rubber layer having a recess 11a formed on the support 1 via an ink receiving layer 12. 5 is ink, 6 is ink supply roll,
13 is a transfer roll for lithographic printing.

In the lithographic offset printing consisting of the above-mentioned members, the ink 5 is supplied from the ink supply roll 6 to the printing intaglio, but since the silicone rubber layer 11 of the intaglio for printing has releasability, the ink is not formed on the surface. 5 does not transfer, but transfers only to the portion where the ink receiving layer 12 is exposed to form a pattern of the ink 5 on the intaglio plate for printing. The ink pattern formed on the printing intaglio plate is transferred to the lithographic printing transfer roll 13 and transferred onto the printing target 7 for printing.

[0008]

In such conventional intaglio and lithographic offset printing methods, when the ink pattern formed on the intaglio printing plate is transferred to the intaglio printing transfer roll 10 or the lithographic printing transfer roll 13. The ink 5 on the printing intaglio is adhered to the glass intaglio 8 and the ink receiving layer 12 and is not completely transferred, but is transferred while being torn off and printed, and thus is printed on the substrate 7. Distortion of edges and variation in film thickness occur in the ink pattern.
There is a problem that it is difficult to print a pattern having a thin line width of 0 μm or less.

The present invention solves the above problems, and an object of the present invention is to provide an intaglio printing plate and a printing method capable of printing with a print line width smaller than 50 μm.

[0010]

In order to achieve the above-mentioned object, the present invention forms a convex portion made of silicone rubber on a support, and forms a fluorine-based spacer on the support of the concave portion formed by the convex portion. A release layer made of a mold material is formed to form an intaglio plate for printing.

Then, a step of filling the printing intaglio plate with a thermoplastic ink while heating, a step of pressing the printing intaglio plate filled with the thermoplastic ink against a printing medium while heating, and The printing method comprises a step of separating the pressed printing intaglio plate from the printing medium while cooling the printing intaglio plate.

[0012]

In the above structure, since the printing intaglio plate has the concave portion formed by the convex portion formed of silicone rubber and the release layer formed of the fluorine-based release material on the support, the concave portion of the printing intaglio plate is heated. Fill with plastic ink while heating, press the printing intaglio filled with ink against the substrate to be heated while heating, then pull the printing intaglio from the substrate to be cooled while printing, and melt The thermoplastic ink in this state does not adhere to the convex portions made of silicone rubber but adheres only to the release layer made of the fluorine-based release material. Then, by pressing the printing intaglio onto the printing medium to cool it, the ink adheres to the printing medium and solidifies, and after solidification is easily peeled off from the release layer, so all of the ink is printed on the printing medium. Transcribed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 1 (a), reference numeral 1 is a support made of an aluminum plate or the like, and a convex portion 2 made of silicone rubber is formed on the support 1. A release layer 4 made of a fluorine-based release material is formed on the support 1 in the recesses 3 formed between the projections 2. The recesses 3 formed in this way form a fine pattern, and the ink 5 for printing is formed.
In the printing intaglio plate is formed by the support 1, the convex portions 2 made of silicone rubber, the concave portions 3, and the release layer 4 on the support 1 in the concave portions 3 described above.

Next, a method for manufacturing the printing concave plate will be described. A photoresist pattern having a thickness of 10 μm, which is a fine pattern, is formed on a support 1 made of an aluminum plate or the like, and a silicone rubber precursor (TSE3221 manufactured by Toshiba Silicone Co., Ltd.) is applied on the support 1 to form a scraper. The photoresist is exposed by scraping and the silicone rubber precursor is left on the support 1 on which the photoresist is not formed. As a result, the convex portion 2 made of silicone rubber is formed on the support 1 on which the photoresist is not formed. The silicone rubber having the convex portions 2 formed in this manner is heated to 120 ° C. to be cured, and then the photoresist is removed. A convex portion 2 exposing the support 1 is formed on the trace of the removed photoresist. Fluorine-based release material (KP manufactured by Shin-Etsu Chemical Co., Ltd.)
-801M) is applied by dip coating and 120 ° C
Then, the release layer 4 is formed by heating. As a result, printing in which the protrusions 2 made of silicone rubber are formed on the support 1 and the release layer 4 made of a fluorine-based release material is formed on the support 1 in the recesses 3 formed between the protrusions 2. An intaglio plate is produced.

Next, a printing method using the above-mentioned intaglio plate for printing will be described. As shown in FIG. 1A, when the thermoplastic ink 5 heated and melted by the ink supply roller 6 is supplied onto the intaglio plate for printing, The plastic ink 5 is filled in the recesses 3 of the intaglio plate for printing.

The thermoplastic ink 5 may be any one as long as it can be melted at a predetermined temperature, and a thermoplastic resin such as acrylic, polystyrene or polyamide is used as a main component and metal powder,
Inorganic material powder, carbon, pigment, organometallic compound, dye, or the like dispersed or dissolved therein can be used.

The thermoplastic ink 5 filled in the concave portion 3 does not adhere to the convex portion 2 formed of silicone rubber in a dissolved state but adheres to the release layer 4 formed of a fluorine-based release material. After filling the concave portion 4 with the thermoplastic ink 5 in this manner, the printing ink 7 is pressed against the filling surface to cool the printing intaglio plate as shown in FIG. 1B. Adheres to the material 7 to be printed and solidifies. In this state, as shown in FIG. 1C, when the printing target 7 is separated from the printing intaglio, the solidified thermal plastic ink 5 is separated from the release layer 4 by the release action of the release layer 4 and the convex portion 2. It is easily released from the convex portion 2.

In this way, the fine pattern formed by the concave portions 3 is printed on the printed material 7. The thermal plastic ink 5 in a molten state adheres to the printed material 7 and is solidified in the concave portions 3. Since the thermoplastic ink 5 is easily released from the concave portion 3 by the releasing action of the convex portion 2 and the release layer 4, the entire amount of the thermoplastic ink 5 can be transferred to the printing target 7 for printing.

By this printing method, fine lines with a narrow width of 20 μm could be accurately printed on the substrate 7.

FIG. 2 shows an embodiment in which the printing intaglio plate of the present invention is wound around a roll 8, and this embodiment can also obtain the same effects as the above-mentioned embodiment.

[0022]

As is apparent from the above description of the embodiments, according to the present invention, the convex portion made of silicone rubber is formed on the support, and the fluorine is formed on the support of the concave portion formed by the convex portion. A printing intaglio plate with a release layer made of a system release material, and the printing intaglio plate is filled with thermoplastic ink while heating and press-contacting the substrate, and the substrate is printed while cooling the thermoplastic ink. Since a fine pattern is printed on the material to be printed by separating it from the intaglio plate for printing, all of the thermoplastic ink filled in the recesses of the intaglio plate can be transferred onto the material to be printed and printed. Width of 50 μm
It is possible to provide an intaglio for printing and a printing method capable of performing finer printing.

[Brief description of drawings]

FIG. 1A is a side sectional view showing a configuration and a printing process of an intaglio printing plate according to an embodiment of the present invention. FIGS. 1B and 1C are side sectional views showing a printing process of the same printing method.

FIG. 2 is a side sectional view showing a printing method of another embodiment.

3A, 3B, and 3C are side sectional views showing a conventional intaglio plate for printing and a printing method.

4A, 4B, and 4C are side sectional views showing another conventional printing intaglio and a printing method.

[Explanation of symbols]

 1 Support 2 Convex 3 Recess 4 Release Layer 5 Thermoplastic Ink 7 Substrate

Claims (2)

[Claims] 1. An intaglio plate for printing, comprising: a convex portion made of silicone rubber formed on a support; and a release layer made of a fluorine-based release material formed on the support of the concave portion formed by the convex portion. 2. A printing intaglio plate comprising a support and a convex part made of silicone rubber formed on the support, and a fluorine-based release layer formed on the support in the recess formed by the projection, and the printing plate. Filling the intaglio with heating the thermoplastic ink, pressing the intaglio for printing filled with the thermoplastic ink against the printing substrate, cooling the printing intaglio pressed against the printing substrate However, a printing method comprising a step of separating from the printing medium.