SU1384405A1 - Method of applying ink on printing plate and device for effecting same - Google Patents

Abstract

The invention relates to printing production, can be used in inks for viscous inks of printing machines and allows for an increase in print quality by applying a uniform layer of ink on the printing form. In the proposed method of applying paint to the sheet, the layers of paint are stretched during splitting and after shearing the layers of paint. A device for carrying out this method has a means of stretching the endless belt 1, made in the form of pressure rollers 12 and 13, in contact with the endless belt 1 at its contact with the cylinders 6 and 10 of the rolled and rolling groups, and the spring-loaded roller 14, which is installed, interaction with the tape 1. In this case, the tape 1 is made in the form of an elastic canvas 2 sec. f-ly, 1 ill. I (L

Description

from 00

4 About SP

one

FIELD OF THE INVENTION The invention relates to printing production and can be used in inks for viscous inks of printed matter.

The purpose of the invention is to improve the printing quality by applying a uniform layer of ink on the printing form.

The drawing shows a device for applying ink to a printed print, general view.

A device for applying ink to a printing form contains a paint-spreading, rolling and rolling groups of rollers and cylinders, enveloping their endless belt 1 and means for stretching the endless belt 1.

The gun group consists of a duct cylinder 2 and a paint box 3 "

The raskatnaya group includes raskatny cylinders 4,5 and 6, raskatny rolls 7 and 8 and the driving gear pulley

The nakatna group consists of a knurled cylinder 10 and a sealing roll P,

The means of stretching the endless belt 1 is embodied in the form of pinch rollers 12 in contact with the belt 1 at its contact with the cylinder 6 of the roll group, and the pressure rollers 13 installed at the point of contact of the belt 1 with the cylinder 10 of the rolling group and the rolling roller 14 interoperable with an infinite ribbon of 1 o

Infinite Ribbon 1 is complete in

Q

five

0

five

0

five

decrease when splitting in the zones of contact of the roller 7 with the cylinder 5 and cylinder 5 with the roller 8. V. because the roller 8 has a greater rotational speed than the cylinders 5 and 6 in the zone of contact of the roller 8 with the cylinder Zine belt 1 with the roller 8 and the cylinder 6 occurs in addition to splitting the shear paint, the intensity of which increases with increasing velocity difference. This makes it possible to further reduce the thickness of the paint layer. But this may be insufficient to obtain a given technological thickness of paint applied to the printing form, and will require the introduction of an additional group of roll rollers and cylinders. In order to reduce the thickness of the paint layer on the tape 1, it is further proposed to stretch the tape together with the paint applied on it. This occurs by changing the linear speed of the belt in the areas from the driving gear pulley 9 to the clamping rollers 1 to 12, from the pressing rollers 12 to the pressing rollers 13, where the speed of the belt 1 increases sequentially and from the pull rollers 13 to the pulley 9, where the speed of the belt decreases , t „e. V -tiVg- V - O „. Additionally, to stretch the tape 1 and the layer of paint on it, a spring-loaded roller 14 При serves. When the layer of paint is possibly ruptured with nano-tape on the tape, the sealing roller 11 smoothes the layer of paint transferred

45

the form of an elastic web and interaction form 40. The relief from the form is afterwards with the plate mold 15, on which the printed form is installed.

The method of applying ink to the printing form is carried out as follows.

On the printing form, mounted on the form cylinder 15, a thin layer of paint is applied with an endless elastic band 1 pressed to the form by a knurled cylinder 10. To obtain a thin layer of paint from that portion of relatively large thickness supplied from the paint box 3 through a duct cylinder 2, serves as a rolling and rolling group. The paint supplied to tape 1 from the duct cylinder 2, in the zone of contact of the tape with cylinder 4 and roller 7, is split into more

50

55

carrying the ink layer onto the printing form is reduced due to the compression of the tape and is completely eliminated after the ink relief is drained with a portion of the ink coming from the duct cylinder 2. In the future, the cycle of applying the ink coating to the printing form is repeated.

Claims (2)

The invention improves the quality of paint application with a simultaneous decrease in the number of rollers and cylinders of the rolling and rolling groups. This, in turn, simplifies maintenance of the inking apparatus, significantly reduces its energy intensity and size. Invention Formula 1 about The method of applying paint on the printing form by supplying paint. thin layers that continue  form. Relief from the form after carrying a layer of paint on the printing form is reduced due to the compressing of the tape and is completely eliminated after merging the colorful relief with a portion of paint coming from the duct cylinder 2. In the following, the cycle of applying a layer of ink to the printing form is repeated. The invention improves the quality of paint application at the same time. by a decrease in the number of rollers and cylinders of the rolling and rolling groups. This, in turn, simplifies maintenance of the inking apparatus, significantly reducing its energy intensity and size. Invention Formula 1 about The method of applying paint on the printing form by supplying paint. 31384405 splitting it into layers, shifting is due to the fact that paint, thin layer of paint on improving print quality by putting on a shape that differs in that, wearing a uniform layer of paint on for the purpose of increasing print quality, the printing form, it has the means by applying a uniform layer of stretching of an endless belt, painting on the printing form, during the time in the form of pinch rollers, splitting and after shifting the layers of contacting with an endless belt paints are subjected to stretching. in the places of its contact with cylinders 10 raskatnoy and rolling groups, and podpru2. A device for applying a red-bilge roller installed with ki on a printed form containing the ability to interact with a dye-free, roll and knurled tape, with the latter groups of rollers and cylinders and rounding-up made in the form of an elastic endless ribbon that webs them, about tons and -na.