DE2557778A1 - Printing head with line:defining elements - selectively movable to print alphanumeric characters from rectangle with 2 diagonals and bisecting lines - Google Patents

Abstract

The printing head has line-defining elements movable in selected combinations against an impression surface to produce a given character. The elements define a rectangle, its two diagonals, and its two bisecting lines. Each side of the rectangle, each diagonal, and each bisector is made up of two in-line elements. This enables any alphanumeric character to be made up. The elements are supported in the head for the printing motion and against rotation. The printing motion is effected electro-magnetically and the head as a whole is movable linearly for the printing of lines of characters.

Description

Print head for typewriters and printing units.

The invention relates to a printing head for typewriters and printing units.

in conventional writing or printing machines, the print mark like letters, numbers, etc. an associated type is used each, which individually sit on movable levers or on spherical type carriers. here the Provision of the types intended for printing is therefore a considerable steering, Brake and actuation mechanism required.

The imprint or writing speed is determined by the necessary Deflection movements limited; in addition, through the mechanical movement sequences a noise that can only be attenuated to a limited extent due to a high level of technical effort.

The known arrangements also require high manufacturing accuracy all mutually engaged, numerous items, what the relatively high weight of conventional typewriters with it brings.

is known that lightweight portable typewriters because of the The instability of the movable elements resulting from the lightweight construction and the desired writing precision be missing.

It is now the object of the invention to work easily and safely to create a print head, which produces a quick print without large movements all characters allowed. The print head according to the invention for typewriters and printing units is characterized by the fact that printed characters - such as letters and numbers - in writing segments - e.g. B. alpha-numeric - autoken and these can be moved to each other are summarized in such a way that, depending on the feed control of the segments, the selected Character imprint can be initiated on a counter bearing, for which purpose the displaceable writing segments out of rotation with the character parts to each other in a receiving housing are.

In detail, the movable writing segments with the character parts by means of extensions for actuation in solenoid coils. But £ 5 is also one mechanical actuation can be carried out using a lever.

According to a further concept of the invention, when selected, extended segments with the corresponding Leicil parts instead of the single segment impression the print copy itself can be moved against a counter bearing for printing. Also can Printhead for line formation be arranged linearly guided, so that instead of one Large number of juxtaposed print heads, only one line-shiftable print head is required.

Finally, the feed of the writing segments and / or the feed or displacement movements of the printhead take place remotely.

The object of the invention thus aims at the methods known up to now of the printing writer to unite, whereby all levers and diversions are omitted can. When using only one printhead with movable segments the movable masses are low and only linear movements are used, whereby In addition, the path necessary for printing is minimal, so that high writing speeds let reach.

This results, for example, in a preferred application of the object of the invention in telex systems and computer systems in which recorded writing signals communicated to the writing part of the system at higher speeds than before and can be converted into legible script.

Another area of application arises, for example, with Portable typewriters. The elimination of conventionally necessary mechanisms is made possible the construction of a typewriter with optimally low weight and accordingly compact design. The divisibility between the writing part and the keyboard is connected a cable for remote control expands the variety of possible applications.

One embodiment of a printhead according to the invention is for example shown in the drawing and described below and. lines: F i g . 1 and 2 show the front view and perspective view of a print head, the latter upon actuation of the writing segments, F i g. 3 to 5 the schematic representation of writing segments in the imprint and F i g. 6 shows the cross section through the print head according to Fig. 1 when actuated.

In the illustrated embodiment, the letters are h to Z and numbers 0 to 9 in the form of 16 character lines a - q after Alpha-numerical type according to Fig. 1 divided, the character parts by Writing segments with attached bar lines a - q are formed, which in the receiving housing 2 and are arranged to be displaceable relative to one another. This creates a bundle of parts of the drawing, which as writing segments 1 in the housing 2 for the formation of Zeichenbdrucken accordingly Fig. 2 are extendable.

3 to 5 are then examples of the imprints of the bar strokes a - q shown on writing segments 1. The writing segments 1 in the housing 2 are here shaped in such a way that they mutually guide each other so that they cannot twist. The selected writing segments with corresponding bar strokes a - q for printing against a counter bearing 3 are extended or the (ehäuse 2 is for the imprint correspondingly extended writing segments 1 pressed against a counter bearing 3, wherein overlying paper 4 with a ribbon or, in the case of several layers of paper, with an intermediate one As usual, take care of the print on blue paper.

Instead of the illustrated parts of the characters in the form of bar lines a - q can also have other summation images with correspondingly curved instead of straight lines or points or mixed forms can be used.

Moving out the selected writing segments with the corresponding Parts of characters, here in the form of bar strokes a -can according to FIG. 6 by means of Magnetic force takes place, for which the displaceable writing segments 1 by means of extensions 5, which are U-shaped here, are sufficient for actuation in magnetic coils 6.

For actuation, the coils 6 each receive a current surge while A polarity reversal can take place for retrieval or the write segments exit 1 against spring action, so that spring force is used for retrieval.

The speed and force of the extension of the writing segments 1 to print the smears a - q can, for example, by the current strength for the Magnetic coil 6 can be regulated so that the intensity of the printed image is set, as well as an adjustment of the impact force depending on the desired copies can be achieved by means of raw papers to be laid between the papers 4. Fine others Actuation of the Schreibseg elements 1 can also be achieved by levers, Bowden cables or the like. achieve, but the type shown here should be the most useful.

For selective actuation of the writing segments 1, i. H. of the writer Deils, a keyboard is provided which, for. B.

the circuits to the respective via electrical button contacts Solenoids conclude. The writing part can be independent of the actuating part, i. H. without fixed connection can only be operated via cable; thus the distance is between the drill bit and actuation part, d. H. the keyboard arbitrarily and the Control can even be done wirelessly.

The subject of the invention can be used in the typewriters customary up to now and printing units are used instead of the principles previously applied there and creates a significant simplification here. But it is also for printing large media, such as newspapers and plans. In this case the Printing part, e.g. B. in the ruler of a conventional drawing machine, installed displaceably and operated by means of a keyboard over a power line span.

In any case, the inserted writing segments 1 with their Bar strokes a - q when extending or else serve to imprint against a counter bearing the print heads are printed as a whole with the writing segments extended brought.

Finally, only one print head can preferably be used, which can be moved laterally in a controlled manner to form lines. Here are each only straight guides required, which allow a quick impression, d. H. short Writing times, e.g. B. for computers.

Claims (6)

Claims: 3 print head for typewriters and printing units, characterized in that printing characters - such as letters and numbers - in writing segments - e.g. B. alpha-numerically - divided and these are combined to one another so that they can be moved are such that, depending on the feed control of the segments, the selected character imprint can be initiated on a counter bearing. 2. Print head according to claim 1, characterized in that the displaceable Writing segments with the character parts ver non-rotatably to each other in a receiving housing are led. 3. 1) back head according to claim 1 or 2, characterized in that the movable writing segments with the character parts by means of extensions for Actuation in solenoid coils is sufficient. 4. Print head according to one of claims 1 to 4, characterized in that that the same with selected extended write segments with the corresponding Character parts can be moved against a counter bearing for printing. 5. Print head according to one of claims 1 to 5, characterized in that the same is arranged linearly guided to form lines. 6. Print head according to one of the preceding claims, characterized in that that the advance of the writing segments and / or the advance or displacement movements of the printhead can be done remotely,