SU1134390A1 - Matrix printing head - Google Patents

Abstract

MATRIX PRINTING HEAD, containing a matrix with decomposition field x p, where m is the number of parallel groups of printing rods, an is the number of printing rods in the group, and the drive of the printing rods, including electromagnets and return springs, that, in order to increase job reliability, print quality and simplified design; the rods and electromagnets of each group are located to the diagonal, the distance between adjacent groups is not less than the thickness of the printing rod, while the printing surface of each printing rod has the shape of a square with an area that provides for printing the overlap of the printed surface of the previous rod eats food. (Ls

Description

WITH

four

OD CO. Invention relates to printing devices, in particular, to sign synthesizing matrix printing devices. A known matrix printing head with a decomposition field of 5x7 or 7x9, containing printing elements placed in guides, and electromagnets interacting with them, located in one or several Rus along the generator of the cylinder. The disadvantages of this printhead is the unreliability of the work due to the rapid wear of long print rods, moving xc in guides with a bend; the complexity of the design, the inconvenience of placing a large number of electromagnets along the cylinder generator, and low print quality, especially in the diagonal elements of the sign, since the printing elements are round rods. The known matrix printing head contains a matrix with a decomposition field ha xn, where m is the number of parallel groups of printing rods an is the number of printed rods in the group, and the drive of the printing rods, electromagnets and return springs 2. The disadvantages of the well-known head are also unreliability due to the rapid wear of long print rods moving in curved guides, the complexity of the design and the poor print quality. The purpose of the invention is to increase the reliability of the print head, simplify the design and improve print quality. The goal is achieved by the fact that in a matrix printing head containing a matrix with a decomposition field, m x n, where m is the number of parallel groups of printing rods, n is the number of printing rods in a group, and a drive for melting rods, including electromagnets and return springs, and The electromagnets of each group are located diagonally, the distance between adjacent groups is not less than the thickness of the printing rod, while the printing surface of each printing rod has the shape of a square with an area that provides atm overlapping flap surface predschuschego rod followed. FIG. 1 shows a matrix printing head; in fig. 2 shows section A-A in FIG. 1: in FIG. 3 shows a section BB in FIG. one; in fig. 4 — The font size of the letter G. Matrix print head contains matrix 1 with decomposition field m X n, for example, 5x7, where m is the number of parallel groups of printing rods 2, and n is the number of printing rods in a group. The head contains a drive of the printing rods, including return springs 3, by means of which the rods 2 are held in the upper inoperative position, and flat electromagnets 4. The flat electromagnets 4 and printing rods 2 are divided into five groups of seven electromagnets 4 and printing rods 2 in each group. In each group, electromagnets 4 and rods 2 are located diagonally, and the distance between adjacent groups is not less than the thickness (S) of the printing rod 2. The flat electromagnets 4 are fixed stationary in a row on the U-shaped bracket 5 mounted on the matrix 1, and with their cores 6 they interact with the printing rods 2. The 7 rods 2 are located with a step t due to the thickness of the flat electromagnet, and the rods of the rods 2 depend only on the thickness of the matrix 1, the printing surface of the rods 2 in the plan has a square shape (Fig. 2), P oschad which is selected so that the printing process and forms an overlap (S) of printed surface on the tape 7 predschuschego rod 2 followed. The print head works as follows. Printing is carried out by a fixedly mounted head during the stepwise movement of the paper tape 7, for example, punched tape from a tape drive mechanism (not shown). The sign code signal goes from the master oscillator (not shown) to the corresponding electromagnets A controlling the printing rods 2. When the electromagnet 4 is triggered, its measles 6 presses the printing rod 2 and through the dye ribbon 8 the last imprint is printed on the paper tape 7.

The printout of the entire 5x7 decomposition floor takes place during the advance of the paper strip 7 by 35 steps.

For example, when printing the letter g, the electromagnets 4 and the printing rods 2 are triggered sequentially as the ribbon 7 advances.

11343904

groups I, starting from a to

. a vertical line is formed on the tape 7, then successively in groups of f-y, 5 rods 2 through electromagnets 4 form a horizontal line forming the horizontal line

SMga fef№aK ref

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FIG L

Claims (1)

MATRIX PRINTING HEAD containing a matrix with a decomposition field w x n, where ha is the number of parallel groups of printing rods, and η is the number of printing rods in the group, 'and a drive of printing rods, including electromagnets and return springs, characterized in that, with the purpose of increasing the reliability of work, print quality and simplifying the design; the rods and electromagnets of each group are located diagonally, the distance between adjacent groups is not less than the thickness of the printing rod, while the printing surface of each printing rod has the shape of a square with an area that ensures subsequent overlap of the printed surface of the previous rod when printing. §. (L ω QO CO> 1 1134390