SU1324865A1 - Apparatus for multicolour printing - Google Patents

Description

The invention relates to computing and can be used to display alphanumeric and graphical information from control computing systems.

A multi-color printing device is known, comprising a paper supporting shaft, a block of printheads with impact elements for applying information to a recording medium through corresponding ink ribbons 1.

A disadvantage of the known device is that it uses the principle of sequential printing, which is significantly inferior in speed to line-by-line (parallel) printing devices. The sequential arrangement of the four color print heads further reduces the printing speed, since at the beginning of the line printing only one head is activated, then the next, etc. At the same time, all four heads print on a small area of the information carrier.

The purpose of the invention is to increase the printing speed.

This goal is achieved by the fact that in a multi-color printing device containing a supporting roller, a block of printheads with percussion elements for applying information to the recording medium through appropriate dyeing ribbons, the printheads are mounted on brackets around a baseboard / 1a along one circle on an equal distance from each other, with each printhead being a parallel-sequential action.

FIG. 1 shows the proposed device, a general view; in fig. 2 - the same, side view.

The device comprises a base 1 on which a supporting shaft 2 is fixed. The print heads 3 on the hinge axes 4 are combined into a block with brackets 5, which are fixed hingedly on the axes 6 and equipped with mechanisms 7 for moving the dye ribbons. Coaxial drums 8, which engage with perforation holes of the record carrier 9, are mounted coaxially with the supporting shaft 2.

The device works as follows.

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Upon receipt of the appropriate control signals on the printing elements of the print heads 3, each print head prints an electronic dotted line of information with its information carrier 9, which is moved along the stationary paper supporting shaft 2 along its axis with the spike drums 8. After printing the information in the line length, equal to the pitch between the printing elements in the print heads 3, the information carrier 9 is intermixed by the spinning reels 8 at a predetermined pitch around the supporting shaft 2. The next element entarna string is printed information during movement of the carrier along the platen shaft axis 2 in the direction indicated protivopolozhno.m.

After the information is printed in the line, the storage medium is not displaced by the given step, and the printing cycle is repeated. Thus, as the information carrier 9 passes in the direction indicated by the arrow, a multi-color image is formed under each of the print heads 3 equipped with ink ribbons of its own color. In order to facilitate maintenance of the printing device, filling the paper ribbon with the printing heads 3, combined into the movable unit together with the brackets 5, can be tilted away from the supporting shaft 2, turning on the hinge axis 6, 6 each of the printing heads 3 has the opportunity independent reversal away from the paper shaft 2 on the hinge axes 4, which makes it easy to set up each printhead separately and replace the ink ribbons in their movement mechanisms 7.

The use of multi-color printers in cartography, geodesy, medicine allows one to receive printed documents from a computer with much more information, which most fully meet the requirements of technical progress. A significant advantage of the proposed device is an increase in the speed of information output.

Riga.1

 Rig. 2

Editor I. Shulla Order 3005/14

VNIIPI USSR State Committee for Inventions and Discoveries

113035, Moscow, Raushsk nab., 4 / o Production and printing company, Uzhgorod, ul. Project, 4

Compiled by A. Pisemsky

Tehred I. VeresKorrektor M. Demchik

Circulation 348 Subscription

Claims (1)

A MULTI-COLORED MECHANISM DEVICE comprising a paper support shaft, a block of print heads with percussion elements for applying information to the recording medium through corresponding ink ribbons, characterized in that, in order to increase the printing speed, the print heads are mounted on brackets around the paper support shaft along the same circumference at the same distance one from the other, with each printhead representing a parallel-sequential action head. (L with yo QO about Joint venture