DE1179563B - Device for point-by-point recording of characters - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Boarding school Class: B4J.J

Number:
File number:
Registration date:
Display day:

German classes: 15 g -24

J13522 VIIb / 15 g
December 28, 1955
October 15, 1964

Devices for printing recording media are known in which the characters can be composed of individual points. A number of wires are to be used for this combined in a bundle and guided their ends in a print head. By an adjusting device the selected wire ends are then used for printing against the recording medium advanced. In these devices, the pressure wires are usually guided so that they are between the Adjustment device and the print head run in an arc.

In the known devices, the print heads are preferably next to one another in the line direction arranged in front of the recording medium. Often there is an imprint in a particular one Required height relative to the recording medium. For rough adjustment of the recording medium A corresponding paper guiding and feeding device is used here, by means of which the recording medium can be adjusted approximately to the place of the intended imprint. However, it will be a very accurate one Requires setting, for example in a given line in which there is a very small deviation up or down is not permitted, the recording medium can be fine-tuned with the help of the usual paper feed device very difficult.

There is also a device known in which the recording medium to be printed on a is arranged on a flat writing surface, the recording medium and base being immovable, while the writing device, ζ. Β. a rotatable type drum, above the writing surface on a Slide is arranged to be movable. In the absence of an adjustment option for the recording medium must be Achieve good reproduction, e.g. B. a note image, the writing device relative to the recording medium also be finely adjustable. Since the writing device is already perpendicular to the Line direction and sometimes also in line direction must be guided to move in a step-by-step manner To achieve a line feed and, if necessary, an imprint in places, this is very constructive inconvenient and expensive.

The invention is directed to a wire printing device in which the printheads are essentially fixedly arranged and the recording medium for line-by-line inscription is conveyed past the printheads by a transport device over a flat platen. The invention consists in that each one bundle of devices for point-by-point recording
of characters

Applicant:

IBM Germany

International office machines

Society m. B. H.,

Sindelfingen (Württ), Böblinger Allee 49

Named as inventor:

Frank John Furman,

Otto Frank Moneagle, Endicott, N.Y.,

Robert Victor Simpson, Owego, N. Y. (V. St. A.)

Claimed priority:

V. St. v. America December 31, 1954

(479106)

Print heads containing print wires by means of a eccentric setting device common to all print heads parallel to the direction of advance of the recording medium are adjustable.

This achieves the advantage of printing heads and recording media in a very simple manner to be able to adjust exactly to each other - for example to the prescribed print line.

The drawing shows a section through a writing point of a wire printing device and shows a single printhead that can be finely adjusted to a specific position. One arranged in the row direction The rail 1 is guided in the frame 4 by means of the plates 2 attached to their end faces. The plates 2 each have a groove 3 which each receive a sliding block 5. These two sliding blocks 5 are each provided with a cylindrical bore in each of which an eccentric disk attached to a shaft 6 7 protrudes. The shaft 6 is rotatably mounted in the frame 4, and when it rotates, for example by a knurled button (not shown), the eccentric disks 7, the sliding blocks 5 and thus the plates 2 with the print heads mounted on the rail 1 raised or lowered in order to place them on the Adjust the print line of the recording medium 8 exactly.

409 707/70

Claims (1)

Claim: Device for point-by-point recording of characters by means of a bundle of Printing wires of selected printing wires with a wire bundle each arranged at the writing point receiving printheads, which face a flat platen, thereby characterized in that the print heads each containing a bundle of print wires by means of one common to all print heads Eccentric adjustment device (1,2,3,5,6, 7) are adjustable parallel to the feed direction of the recording medium (8). Documents considered: German Patent No. 731248; U.S. Patent No. 2,524,127. 1 sheet of drawings