SU1511146A1 - Method of multicolor dot screen printing - Google Patents

Abstract

The method of multi-color raster screen printing relates to printing and can be used in the design of various kinds of printing products (binding materials, paper, cardboard). The aim of the invention is the expansion of technological capabilities and savings of pigments. In order to implement the method, a white covering paint is applied to the pre-painted material through a negative printing form made for the ink of the color of the printed material, and then the rest colors of the triad are applied through the positive printing forms made for the transparent paints of these colors. 2 tab.

Description

The invention relates to printing and can be used in the design of various kinds of printing products (binding material, paper, cardboard, etc.)

The purpose of the invention is to expand technological capabilities and save pigments about

The method of multi-color raster screen printing, which consists in the fact that by successively applying a triad of colors to the printed material through the printing form, first apply a white covering paint through a negative printing form made from a photoform for printing color of printed matter O1

ala, and then impose the rest of the colors of the triad through positive printing plates made from the photoform for paints of these colors (see table 2).

The most complete color gamut is achieved if the color of the printed material is close to one of the triad colors.

The procedure for applying flowers according to options 1-3 is given in Table I.

The proposed method allows to obtain a multicolor raster image with an expanded: color gamut when printing on pre-painted materials produced in a wide range of interleaved 4;

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books, and thereby significantly expand the possibilities of their decoration

In addition, the proposed method involves the use of two triad paints and a white one, which will provide cost savings of expensive pigments

The invention is illustrated by specific examples of its inventions.

Niyao

To confirm the possibility of reproducing the extended color gamut when printing with three colors: cyan, magenta, and yellow, due to the synthesis achieved by overlaying colors one on another, according to the proposed method on binding, pre-painted materials, for example, red paper lederin, a white paint was applied on it of a series of CT So19o1 composition, maso%:

Vinyl copolymer

chloride with vinyl

Lead chloride 18-27

Phenol-rmaldehyde resin 3-12

Titanium dioxide 40-45

Organic solvent (benziladetat) Up to 100

through a printing form for a magenta ink made from a dewegodized raster negative.

Then successively applied transparent screen printing inks of the CT So301 series of the blue and yellow compositions, maso%:

Copolymer of vinyl chloride with vinylidene chloride 18-27

Phenol formaldehyde resin 3-12

Neorgopigment

or orKoKrasy. Tel1-23

Organic

solvent

 (benzyl acetate) Up to 100 through printing plates made from color-separated raster positives for blue and yellow inks,

Similarly, a multi-color raster screen ne64 was made.

chto on folio blue. Dp of which they applied a white-covering paint - - cut a printing form for cyan ink, made with c-color-separated raster negative, and then the other magenta and yellow transparent paints were sequentially applied through printing plates made with color-separated raster positives for purple and yellow.

Synthesis of colors was controlled by the original, and color was controlled by the original and color control scale. Deviations from the ideal color synthesis are within acceptable limits. The results for controlling the color gamut are summarized in Table 1.

As can be seen from the table, the proposed method of multicolor raster screen printing allows to achieve a wide color coverage when printing i

on pre-painted materials.

In addition, printing companies are offered to be equipped with three-color screen printing machines for printing book bindings. The operation of this equipment with the intended technology will significantly expand the possibilities of screen printing and increase labor productivity by reducing drying time due to a decrease in the thickness of the ink layers and the area of the printing elements.

Claims (1)

Invention Formula The method of multi-color raster screen printing by sequential; Putting a triad of inks on the printed material through a printing plate, characterized in that, in order to save pigments and expand technological capabilities by printing pre-painted materials, first apply a white covering paint through a negative printing form for the colors of the printed material, and then apply other colors triads through positive printing plates for transparent paints of these colors. The form Table 2 Schemes Original Rastrov Rastrova Rastrov is positive F / F P Negative F / F G Positive F / F G Print form G Rasterov positive F / F P Printing form P Raster negative F / F dl P Printing form for P (printing in white ink) Editor CH „Kelemesh Compiled by N.Kal.ashnikova Tehred A. Kravchuk. To the director T.Paly Order. 5848/21 Circulation 339 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow,. Ж-35, Raushsk nab. D. 4/5 Printed form F Raster negative F / F Zh Printing form for W (printing white paint) Raster positive F / F for F Printing form for G Printing form for F Subscription