JPS5940240Y2 - Printmaking color plate - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a plate-making color plate in which concave portions and convex portions are colored differently.

Traditionally, it has been possible to manufacture family crests and company marks by etching metal, but it has not been possible to industrially apply different colors to the convex and concave portions.

For example, when coloring an intaglio, the conventional method is to pour paint into the recesses, but since the recesses are shallow,
There were problems such as protrusion, and in particular, detailed work had to be done manually, such as pouring in with a syringe, which required skill.

Furthermore, in the case of letterpress printing, it is impossible to color the convex portions differently from the background.

Therefore, the inventor of the present invention uses intaglios and letterpresses made by conventional methods to develop a color plate in which various color retention is easily and uniformly applied to the convex and concave portions by a mechanical method.
As a result of various studies, we have found that if a paint layer is pre-prepared on the plate making plate, printing ink can be applied by roller only to the convex parts of the plate, and the printing ink layer can be baked into the paint layer. It has been found that the material adheres to the surface of the surface of the surface of the material and does not cause changes such as peeling even after a long period of time.

That is, the plate-making color plate according to the present invention has a melamine-based or epoxy-based paint layer on the entire surface of the zinc intaglio plate or zinc letterpress plate, and a printing ink of a different color from the paint layer is further applied on the paint layer only on the convex portions. It is characterized by having a baked layer.

The plate-made color plate according to the present invention is manufactured by making an intaglio or letterpress plate using a conventional method, spraying or applying paint, partially masking if necessary, applying printing ink with a roller, and baking. I can do it.

The present invention will be further explained in detail based on the drawings.

FIG. 1 is a sectional view showing the structure of the color plate of the present invention.

First, a relief plate 1 is made using ordinary plate-making techniques, and then grained with water-resistant paper, steel wool, or the like in order to enhance the adhesion of the paint.

Next, a commonly used volatile solvent such as melamine thinner is used to remove oil stains from the plate surface and clean the base.

Paint toned to the designated color is applied to the entire surface of the plate thus cleaned to a substantially uniform thickness to form a paint layer 2.

In this invention, a zinc plate is used as the plate material, and the
If heated above 140°C, the zinc plate will become brittle.
The following epoxy and melamine paints are used for baking.

If necessary, a matting agent may be mixed with the paint.

The paint is sprayed onto the convex portions and concave portions using a spray gun, almost uniformly and thinly, for example, to a thickness of 20 to 30 μm.

After applying the paint layer 2 to the letterpress 1, it is advantageous to leave it for 3 to 5 minutes in order to prevent the formation of pinholes.

Then, after baking and cooling, an opaque printing ink layer 3 of the desired color is applied by roller coating and baked.

The baking temperature is appropriately selected depending on the type of paint and printing ink.

The temperature for baking the printing ink is usually 100 to 120°C.

The above-mentioned spraying is performed during coating and roller coating, and if multiple colors are desired, masking, coating, and baking are repeated as appropriate for each color.

Of course, according to the invention, the printing ink layer 3 is provided on the convex portion of the plate.

As described above, according to the present invention, family crests, company marks, company name plates, company mottos, family mottos, certificates of commendation, signboards, signs, paintings, and many other items can be easily produced by mechanical methods. .

And unlike those printed on paper, the product uses intaglio or letterpress itself, so it has an excellent three-dimensional appearance,
Gives an image of class and luxury.

For example, a three-dimensional product can be obtained by printing and coloring a delicate original drawing as shown in the reference drawing.

Furthermore, since the plate-making color plate according to the present invention is made of a metal plate, it has the advantage that it can be manufactured at a much lower cost than plastic molding, has excellent weather resistance, and can be used permanently.

Further, although it has been said that zinc plates in particular have poor coloring properties, the present invention allows for extremely good coloring in a wide variety of colors.

'Next, the present invention will be explained in detail based on examples, but the present invention is not limited thereto.

Example 1 A letterpress version of the company motto was produced by photolithography using a zinc plate with dimensions of 24 crr IX and 27 cm.

After removing the spots and removing the film surface, the entire plate surface was grained with waterproof paper, and washed and degreased with melamine thinner.

Next, a black epoxy paint (trade name: Epoma DB type matte black) was sprayed with a spray gun to form a paint layer with a thickness of about 20 to 30 μm over the entire plate surface, and the plate was left as it was for 4 minutes.

Thereafter, it was baked at 130 to 140°C for 15 minutes, and after cooling, gold printing ink was applied with a roller and baked at about 110°C for 5 minutes.

The company policy plate obtained in this manner had golden letters embossed on the black background, the paint layer and printing ink layer were firmly attached to the zinc plate, and had excellent weather resistance.

Example 2 An intaglio version of a portrait was produced by photolithography using a zinc plate with dimensions 24 x 27 cm.

After removing the film surface, the entire plate surface was grained with waterproof paper, and washed and degreased with melamine thinner.

Next, a black epoxy paint (matte) was sprayed with a spray gun to form a paint layer with a thickness of about 20 to 30 .mu.m over the entire plate surface, and it was left to stand for 4 minutes.

After that, it was baked at 130 to 140°C for 15 minutes, and after cooling, gold printing ink was applied with a roller and baked at about 110°C for 5 minutes.

In the portrait plate thus obtained, the image area stood out in black on the gold background, the paint layer and the printing ink layer were firmly adhered to the zinc plate, and it had excellent weather resistance.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the structure of the color plate of the present invention. The reference figure shows the reduction factor of one embodiment of the color plate of the present invention. 1... Letterpress, 2... Paint layer, 3...
...Printing ink layer.

Claims (1)

[Scope of utility model registration request] Plate making characterized by having a melamine or epoxy paint layer on the entire surface of a zinc intaglio plate or a zinc letterpress plate, and further having a printing ink baking layer with a color different from the paint layer on the paint layer only on the convex parts. color plate.