SU1350044A1 - Method of lithography without wetting - Google Patents

Abstract

The invention relates to printing industry and allows to simplify printing technology, expand the technological capabilities of the method and improve runnability. The printing form with hydrophilic printing and hydrophobic gaps, and then the emulsion paint of the oil-water type with the internal dispersed phase from the fast-fixing oil printing ink is transferred in an intact state to the intact state. % of the total mass of the emulsion paint, and the external dispersion medium from the aqueous solution of the following components at a ratio, wt.%: hydrophilic emulsifier 2.0-41.0, electrolyte 0.1-15, water up to 100. Destroy the emulsion paint on zapa atyvaemom material while heating it to 200-220 C, and blowing hot air, to form a printing ink ottiskay. iS O5 SL

Description

The invention relates to the printing industry, in particular to the method of flat printing without moisture.

B, the purpose of the invention is to simplify the printing technology, expanding the technological capabilities of the method, increasing the circulation.

Example. The method of flat printing without moistening is carried out according to the following technology. First, an oil-water emulsion paint (M / V) is prepared.

In the usual way by mixing in a high-speed mixer 75% by weight quick-fixing ink, for example, the 2413 series and 25% by weight of an aqueous solution containing hydrophilic emulsifiers and reagents that promote the high hydrophilicity of the printing elements and the high hydrophobicity of the whitespace elements.

The composition of the dispersed phase may include, for example, black illustrative paint of the following composition, wt.%:

Sazh20,0

Reflex bl y7,0

Alkyd resin D-4100 10.0

Varnish 6-2151, 0

Oil into fractions

260-290 С

Cobalt Dryer

Lead drier

The composition of the dispersion phase includes the following components, wt.%:

Hydrophilic emulsifier:

1.0

10.0

.0, 0

Sodium oleate

Albumin Ichny

(dry),

Electrolyte:

Sodium phosphate dvuhkamer

Phosphoric acid 85%

Water

solution pH

The viscosity of the finished colorful emulsion, measured on a PVK-1 rod viscometer, is 110-140 P

A full / colorful inked emulsion is loaded into the inking box of the printing machine and, using an inking machine, is applied to a monometallic printing form having printing elements based on a hydrophilized chromium surface and space elements.

1.0

0.1

0.02 97.88 5.4-5.6

13500442

on the basis of a hydrophobic layer, for example, ortho-naphthoquinone-diazide, photopolymer, etc., lle (also on the surface of chromium. The basis of the printing form is carbon steel.

The ink is then transferred from the plate to the material to be printed and is destroyed on it by heating as follows. Printing is carried out on offset paper or coated paper on a roll offset machine, using a heating or IR drying device, which 15 provides the Hc1 Heating impression to a temperature of 220 ° C. In the mode of drying and blowing it with hot air, the emulsion of the colorful emulsion on the impression is de-emulsified, the excess of moisture is removed from it and the ink layer is fixed on the image or the regulated printing speed,

PRI mme R 2. The method of flat printing without moistening is carried out 25 according to the technology of Example 1.

The emulsion paint is manufactured and used under the same conditions as in example 1, with a paint phase ratio of 90%, an aqueous dispersion phase of 10%, but with a changed composition of the aqueous dispersion phase, which includes the following components, wt. %:

Hydrophilic Emulsifier: 35 Sodium Oleate

Soluble starch 40 Electrolyte:

Sodium phosphate two-substituted 405 i

Phosphoric acid 85% 0.02

45

Water

solution pH

58,88

5.4-5.6.

50

55

Printing is done on a sheet machine.

EXAMPLE 3 Emulsion paint is made by mixing 70% by weight of a paint with 30% by weight of a dispersion phase in a high-speed mixer.

The composition of the dispersed phase may include 5 for example, black paint of the following composition,

SootI7jO

Reflex bl U5,8

Varnish 6-2172,7

Water

solution pH

58,88

5.4-5.6.

0

five

Printing is done on a sheet machine.

EXAMPLE 3 Emulsion paint is made by mixing 70% by weight of a paint with 30% by weight of a dispersion phase in a high-speed mixer.

The composition of the dispersed phase may include 5 for example, black paint of the following composition,

SootI7jO

Reflex bl U5,8

Varnish 6-2172,7

Oil fraction 2O-290 C4.0

Cobalt Dryer 0.5

The composition of the dispersion phase consists of the following components, mas:

Hydrophilic emulsifier;

Sodium oleate 1

Oil contact, 5

Starch8

Electrolyte:

Lemon Sour Sodium

triple 5

Water 74,5

solution pH

5.8

The viscosity of a colorful emulsion, measured on a PVK-1 rod viscometer, is 80-110 P,

The printing process is similar to that described in Example 1, but differs by using a bimetallic printing plate, in which the printing elements represent the surface of hydrophilized chromium, and whitespace elements are formed, for example, on copper treated with a hydrophilicizer, for example potassium xanthate.

Printing is made of books, magazines and other printed materials on offset paper ff 1, no. 2 or machine-coated on an offset roll machine equipped with a heating or IR drying device, providing for intensive blowing of heated paper web with heated paper and heating the paper to a temperature of 200 C. In the drying mode, the emulsion of the colorful emulsion on the impression is de-emulsified, excess moisture is removed from it, and the ink layer is accelerated in the printed image at a regulated speed. printing,

PRI me R 4. The method of flat printing without moistening is carried out according to the technology of Example 1.

The emulsion paint is made by mixing a 50 wt.% Dispersed phase with a 50 wt.% Dispersed phase in a high speed mixer.

The composition of the dispersed phase may include, for example, black paint of the following composition, wt.%.

Sazh17,0

Reflex bl U5,8

Sodium phosphate-acid disubstituted 0.09 Orthophosphoric acid 5% 85% 0.01

Water 85,4

pH of the solution 5.8-6.0.

The viscosity of the colorful emulsion, measured on a PCV-1 core viscometer, is 80 P.

The advantage of the proposed method in comparison with the known is the possibility of using in

25 of the process of monometallic and polymetallic mold plates, but with hydrophilic printing and hydrophobic whitespace elements with high resistance resistance

30 printing plates up to 500 thousand-1 million reprints, expanding the technological capabilities of the process and using it for printing without moistening for both direct and offset flat printing of various printed products: books, magazines, art-graphic, newspaper and other types of products that can be used on machines

40 of the usual type for offset printing with a heating dryer, but without a dampening device.

Claims (1)

Invention Formula Luck 6-21 The method of flat printing without moisture, including the application of emulsion ink on the printing form with printing and whitespace elements 5Q and transferring it to an inking paint-breaking material, characterized in that, in order to simplify printing technology, expand the technological possibilities of the method and increase the circulation, an oil-water type paint with an internal dispersed phase of fast-72.7 is used as an emulsion paint. fixed oil print 50044 Oil into fractions 260-4.0 Cobalt desiccant 0.5 d The composition of the dispersion phase consists of the following components, wt%: Hydrophilic emulsifier: Sodium oleate 1.0 Oil contact 3.5 10 Starch 10.0 Electrolyte: Sodium phosphate-acid disubstituted 0.09 Orthophosphoric acid 5% 85% 0.01 Water 85,4 pH of the solution 5.8-6.0. The viscosity of the colorful emulsion, measured on a PCV-1 core viscometer, is 80 P. 20 g The advantage of the proposed method in comparison with the known is the possibility of using in 25 of the process of monometallic and polymetallic mold plates, but with hydrophilic printing and hydrophobic whitespace elements with high resistance resistance 30 printing plates up to 500 thousand-1 million reprints, expanding the technological capabilities of the process and using it for printing without moistening for both direct and offset flat printing of various printed products: books, magazines, art-graphic, newspaper and other types of products that can be used on machines 40 of the usual type for offset printing with a heating dryer, but without a dampening device. Invention Formula 51350044 & paints with its content of 50, the dye is applied onto a printing 90% by weight of emulsion ink and a form with hydrophilic printing external dispersion phase from water, elements and hydrophobic plain-solution of the following composition, its elements, and its destruction by weight. on the printed material - Hydrophilic emulsifier 2.0-41.0le by heating it up to 200-220 С to Electrolyte 0.2-15.0 formation of fixed printed Water Rest on print.