JPH0435984A - Printing method on hard body and printing plate - Google Patents

Abstract

PURPOSE:To enhance the accuracy of a printing position and to print a fine patter with high grade regardless of surface undulation or uneveness by applying printing on a hard body to be printed using a printing plate formed by integrally laminating a hard base material and a hard flexible plate material through an elastic material. CONSTITUTION:A base material is formed in thickness of about 1 mm from a metal, for example, iron or copper and ink cells 2a of a fine patter are formed to the surface of a plate material 2 made of copper, aluminum or nickel having thickness of about 20 - 50 mum and an elastic material 3 composed of rubber or the like having thickness of about 0.1 - 1.0 mm is interposed between the plate material 2 and the base material 1 to integrally laminate the plate material 2 and base material 1 to form a printing plate 4. Therefore, the printing plate 4 can be brought into contact with the plate material 2 under uniform printing pressure at the time of the application of printing pressure to a hard body to be printed. Since the plate material 2 is formed from a hard material, the plate material 2 is not deformed in the tangential direction of printing pressure and the sharp printing of a fine pattern enhanced in dimensional accuracy and free from printing irregularity becomes possible.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method of printing on hard printing materials such as glass, metal plates, semiconductor substrates, etc., and a printing plate used in the printing method.

[Conventional Technique vfI] Conventionally, an offset printing method using an intaglio plate has been used to print on this type of hard printing material.
When printing micro-sized patterns, the deformation of the blanket, the surface condition of the hard printing material or printing plate, etc. have a great influence on the finished dimensional accuracy of printing.

[Problems to be Solved by the Invention] According to the conventional intaglio offset method, when printing pressure is applied to the blanket during printing, it is pressed against the hard printing material and the surface of the blanket bulges in the tangential direction of the printing pressure. deformed,
This results in deviations in printing dimensions. Additionally, the surface of a hard printing material may have 2-3 micron undulations or unevenness, and similarly the surface of the blanket may have undulations of that size, making it difficult to obtain a uniform printing pressure. First, local defects or enlargement of the printed pattern may occur.

The present invention was made in order to eliminate these conventional problems, and is capable of printing fine patterns with high printing position accuracy on hard printing materials and with high quality despite the undulations and unevenness of the surface. An object of the present invention is to provide a method of printing on a hard printing material and a printing plate for the same.

[Means for Solving the Problem] As a means for solving this technical problem, the present invention provides a laminated structure in which an elastic material is interposed between a hard base material and a hard flexible plate material. The gist of this method is to form a printing plate by converting the printing plate into a solid material, and to print on a hard printing medium using this printing plate.

Further, the gist of the present invention is that the plate material is a plate-shaped or sheet-shaped resin plate reproduced using a photolithographic means and a plate mold created by electroforming.

Furthermore, the present invention provides a rubber layer with a thickness of 0.1 to 1 mm adhered onto a hard base material, and a predetermined pattern formed on the rubber layer.
The gist is a printing plate formed by adhering metal plate materials with a thickness of 0 to 50 μm.

[Operation: When printing pressure is applied to the printing plate, even if there are waves or irregularities on the surface of the hard printing material, they are absorbed by the soft elastic material, and the plate material is formed to be hard and visible. Therefore, even if it is pressed against a hard printing material, it will not be deformed in the tangential direction of the printing pressure.

[Example] Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes the base material of the plate, which is made of metal such as iron or copper and has a thickness of about 1 inch. 2 is thickness 2
It is a plate material made of copper, aluminum, or nickel with a thickness of about 0 to 50μ, and a fine pattern of ink cells 2a is formed on its surface, and a thickness of 0.1 μm is formed between this plate material 2 and the base material 1.
~1. A printing plate 4 is formed by laminating and integrating an elastic material 3 such as rubber having a thickness of about 0 mm. In this case, the elastic material 3 may be made of a plurality of thin layers.

In the printing plate 4 configured in this way, a flexible elastic body is sandwiched between a rigid body and a rigid body (flexible body), and a flexible plate material 2 that can be deformed according to the unevenness of the surface is formed. Therefore, when applying printing pressure to a hard printing material, the plate material 2 can be brought into contact with uniform printing pressure, and since the plate material 2 is made of hard material, it will not be deformed in the tangential direction of the printing pressure. As a result, it is possible to fully expect a printing finish with high dimensional accuracy, and it is possible to print fine patterns that are clear and have no printing unevenness.

FIG. 2 shows another embodiment of the present invention, in which a printing plate 14 is formed by laminating a hard base material 11 and a plate material 12 with an elastic material 13 sandwiched between them. There is. In this case, the plate material 12 is a resin plate, and a relief uneven surface formed by so-called photolithography is copied onto a metal plating layer, and this copied material is used as a matrix to form a plate or sheet by injection molding or press molding. It is possible to reproduce resin printing plates of the form. For example, after coating a glass substrate with a photoresist, a glass mask having a desired pattern is brought into close contact with the photoresist and exposed to light to form a relief image, and a thin film is applied to the surface of the glass substrate containing the relief image. By forming a conductive layer to make the surface conductive, and then applying electrolytic nickel plating to deposit a nickel electroformed layer and peeling it off from the glass substrate surface, a matrix for a printing plate can be formed. According to the synthetic resin molding method (injection molding or press molding) using a mold, the plate material! 2 can be formed.

This plate material 12 can be made of, for example, polyvinyl chloride, polycarbonate, acrylic resin, thermoplastic polyester, polyamide, or the like. Also, 20~50μ
Printing plates made of thick metal foils such as copper, aluminum, and nickel are also visible and can be used. The elastic material 13
As the material, natural rubber, synthetic rubber, silicone rubber, sponge, etc. can be used.

The printing plate 14 configured in this way can be wrapped around the plate cylinder P for printing as shown in FIG.
As shown in the figure, even if there are minute waves or irregularities on the surface of the hard printing material Q such as glass, metal plates, semiconductor substrates, etc., they are absorbed by the elastic material 13, so that the plate material 12 becomes the printing material. It contacts the surface of the body Q with uniform printing pressure, and the printed pattern is not locally damaged or enlarged. Therefore, a fine print pattern can be neatly printed on the hard printing material Q. Furthermore, although the surface of the resin plate itself cannot avoid undulations in micron units, this undulation of the resin plate can also be absorbed by the elastic material.

[Effects of the Invention] As explained above, according to the present invention, since it is a method of printing with a printing plate having a laminated structure in which an elastic material is interposed between a hard base material and a plate material, it is possible to The plate material contacts the printing material without expanding or contracting in the tangential direction of the printing pressure, and even if the surface of the printing material has some unevenness, these unevenness can be absorbed by the elastic material. Therefore, the plate material comes into contact with the printing material with uniform printing pressure, making it possible to print with high printing position accuracy, clearness, and beautiful printing without uneven printing.
The effect is particularly significant when applied to printing fine patterns on the micron order. Further, according to the present invention, there is an advantage that direct printing can be performed.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a printing plate showing an embodiment of the present invention, Fig. 2 is a sectional view of a printing plate showing another embodiment of the invention, and Fig. 3 is a state in which the printing plate is attached to a plate cylinder. Side view showing 4th
The figure is also a partially enlarged view showing the state at the time of printing. 1.11... Base material 2.12... Plate material 2a.
... Ink cell 3.13 ... Elastic body 4.14 ...
・Printing plate P...Plate cylinder Q...Printing material patent applicant Toppan Printing Co., Ltd.

Claims (3)

[Claims] (1) A printing plate is formed by laminating and integrating a hard base material and a hard flexible plate material with an elastic material interposed between them, and this printing plate is used to print on a hard printing medium. A method of printing on a hard printing material, characterized by: (2) A printing plate for a hard printing medium, characterized in that the plate material is a plate-shaped or sheet-shaped resin plate reproduced using a photolithographic means and a plate mold created by electroforming. . (3) A 0.1-1 mm thick rubber layer is glued onto a hard base material, and a predetermined pattern is formed on the 20-50 μm layer.
A printing plate characterized by being made by gluing together thick metal plate materials.