DE1059006B - Address printing plate - Google Patents

Description

GERMAN

The invention relates to a device on printing plates for embossing printing matrices for addressing machines, so that these plates can also be used to photograph the embossed text using X-rays, suitable, for example, for marking X-ray film.

So far, the following methods have essentially been used to mark X-ray film:

1. Marking by hand with pencil or special ink either in the darkroom before developing or after the film has been developed and dried.

2. Identification with artificial light and stencils as well as identification strips written on with a typewriter, which were copied onto the film before developing the X-ray film in the darkroom.

3. Marking of cassettes with lead numbers, which are transferred directly to the image during exposure will.

Now that many hospitals have started using forms related to a patient Using mailing machines with embossed metal plates would be a significant advantage if one These plates could also be used for marking X-ray film by looking at a particular one Part of the film transfers the embossed text of the plate to the film by means of X-rays, preferably while the film is in the cassette.

The usual addressing plates are mostly made of light metal (aluminum or aluminum alloy), Iron or zinc. If one tries to image the embossed text of these plates by means of X-rays, so it turns out that you get an image of the text, but this image is not sufficiently black still sharpness. The best result is achieved with zinc plates because of the higher radiation absorption of this metal, but also with zinc plates the results are not entirely satisfactory.

The invention eliminates the disadvantages mentioned and enables an addressing plate that you except for printing also still with a perfect result for exposing the embossed text on one Can use radiation-sensitive film with the help of X-rays. The inventive Addressing plate is essentially characterized in that it has a base for embossing of text suitable material and of a thin layer of a softer material, which is more difficult to penetrate for X-rays, which is used during embossing of the text is partially printed to the side at the embossed depressions and thus in these places an increased permeability for the X-rays is created.

Address printing plate

Applicant: Järnhs Elektriska A.-B., Stockholm

Representative: Dr.-Ing. A. van der Werth, patent attorney, Hamburg-Harburg, Wilstorfer Str. 32

Claimed priority: Sweden, February 15, 1958

Arno Olof Ragnar Andersson, Stockholm, has been named as the inventor

The pad can consist of an addressing plate made of conventional material, e.g. B. made of light metal, Iron or zinc, with a thickness of for example

as about 0.5mm. However, the pad can also consist of another suitable material, such as plastic. The main thing is that he at Embossing results in a printing matrix that can be used in the mailing machine.

According to the invention, a thin, z. B. 0.06 to 0.1 mm thick lead foil can be attached. When embossing you then get in the usual Way a plate that can be used as a printing matrix, whereby the lead foil is in no way disruptive.

When embossing, however, the softer lead at the bottom of the embossed surface parts is pushed away to the side, so that the film becomes much thinner there and allows the X-rays to pass through to the necessary extent, while the remaining surface parts of the plate are more or less radiopaque. You can therefore with good result, use the plate to print on a photographic in a cassette Film to reproduce the text of the addressing plate by x-ray exposure. The text is then on the film with good sharpness and strong blackening.

Instead of a lead foil you can also use another, Use material that is highly absorbent and expediently soft, ζ .Β. Foils made of other suitable metals or foils such. B. made of plastic, the one for X-rays only contain finely divided material that is difficult to penetrate, e.g. B. finely divided metals with a high atomic number,

909 530/171

Claims (1)

> For example, lead or metal oxides, such as red lead Pb ₂ O ₃ ) or lead oxide (PbO), or other suitable: chemical compounds such as barium sulfate, or substances in general that keep the X-ray radiation stronger than the material of the base. When using plastic foils, the plastic should be designed so that it deviates to the side during embossing or η of the recessed point becomes thinner, as does lead. The foils can be cemented or glued to the base. But you can also have a blessed one Spray film-forming material onto the base or electroplate a suitable layer. To illustrate the invention, reference is made to the drawing, whose 1 shows a section through a still unembossed according to the invention Addressing plate is while Figure 2 is a like section of an embossed plate. Both cuts are on a larger than natural scale i shown. A layer or film 2 ms radiopaque material is attached to a base 1. At the Embossing the material of the softer layer 2 in the base of the embossed surface parts is pushed away to the side, so that the layer is much thinner there than in the unembossed surface areas. The addressing plate can therefore be used to photograph the embossed text by X-rays, with perfect Reproduction is achieved. Claim: Address printing plate, characterized in that the made of a suitable material, such as light metal, Iron or zinc, or made of plastic, a thin plate on one side Layer or film made of a softer material that is difficult for X-rays to penetrate, such as metal, e.g. lead, ... or plastic, which contains this material in finely divided form, wears, which when embossing the text at the bottom of the embossed surface parts partially is pushed away laterally, so that the permeability of these points for X-rays is increased. Considered publications:
German Patent No. 535,914;
E'g gert, "Introduction to X-Ray Photography", 1942, p. 212. 1 sheet of drawings