DE1497238A1 - Method for line-by-line recording of characters on a sheet-shaped recording medium - Google Patents

Description

2 ^ ¹ SEP 1QR SIEMENS AKTIENGESELLSCHAFT Munich, the " ^3D

Wittelsbacherplatz 2

PA 65/2825

Method for line-by-line recording of characters on a sheet-shaped recording medium.

The invention relates to a method for line-by-line recording of characters on a sheet-shaped recording medium using an endless strip

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New documents (Art 7 § 1 Ab ·. 2 No. I sentence 3 dee Xndwungejjea. V. 4.9.19 «

förinigen intermediate carrier on which the characters on a Place recorded one after the other by a reconciliation organ and then line by line by means of impression organs parallel.be applied to the sheet-shaped recording medium.

Methods and devices for performing these methods have become known and have been proposed by which makes it possible to receive characters that are in series are also in series on a strip-shaped endless To apply intermediate carriers and then to guide them past a sheet-shaped recording carrier in the line direction, a line-by-line imprint of the color characters applied to the intermediate carrier by imprinting organs he follows. These methods have the advantage that no special storage devices are required which the in Combine series of incoming characters line by line in parallel, and that only one recording element is required for each character position. This mechanically-non-mechanically-designed printing process in which all characters at one recording point are printed on one Intermediate carriers are recorded and then line by line in parallel on a sheet-shaped recording medium are printed, are the other high-speed printing processes in particular because of the saving of an intermediate memory think. Disadvantageous with this method

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however, is that multiple scoops either not at all or only can be produced with very poor quality.

The object of the invention is to perfect this known printing method, wherein · an intermediate carrier is used »in such a way that that a large number of equally good hats can be produced with it.

According to the invention, the set object is achieved by a method solved, which is characterized in that the received characters by a recording organ's electromagnetic or are recorded electrostatically on an intermediate carrier and that this intermediate carrier to a A plurality of sheet-shaped recording media is passed in the line direction, with each of the recording media the intermediate carrier is then colored according to the shape of the magnetized characters the markings are applied to this sheet-shaped recording medium with the aid of impression organs and then each time the intermediate carrier is cleaned of paint residues. .

The ones on the subcarrier electrostatically, but especially the electromagnetically recorded characters are not destroyed in the individual impression organs, so that • it for a long time and during these prints

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remain unchanged in the same quality ", only the printing ink becomes unusable in the individual printing processes, which in known processes has led to that several panels of perfect quality could not be made. According to the invention, the possibility is to produce multiple uses of consistent quality achieved by recording them on the intermediate carrier Characters are colored before each printing process and the color residues are removed from the intermediate carrier after the printing process be removed again. The electromagnetically or electrostatically applied characters remain and can be colored again, printed and again cleaned of paint residues until the desired Number of benefits is established. Then they are electromagnetically or electrostatically onto the intermediate carrier recorded characters are deleted again and de.r intermediate carrier can again with new characters by the recording organs be occupied.

Details of the invention emerge from an embodiment, which is shown in the drawing and is described below.

Show it:

Fig. 1 is a perspective view of a SehnelldruckeinricMung with imprints on only one sheet

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shaped recording medium.

Pig. 2 is a schematic view of a high-speed printing device, the intermediate carrier on two sheet-shaped Recording media is passed.

An intermediate carrier 1 carried by two rollers 2, 3 with magnetic coating is applied in the direction of the arrow on seven perpendicular to the transport direction Writing heads 4 past through a dusting chamber 5> which is filled with magnetic printing ink 6, between one sheet-shaped recording medium 7 and these oppositely arranged printing hammers 8, via an erase head 9 and via a Cleaning brush 10 out. One of the two roles 2, 3 is driven by a drive motor 18 at constant speed. Behind the sheet-shaped recording medium is opposite the print hammers 8 an auxiliary electrode 11 is arranged. Through the writing heads 4, for example characters output from a data processing system in a grid of points on the with magnetic Material provided intermediate carrier 1 magnetized. Afterward the intermediate carrier arrives in the stunning chamber 5. The magnetic printing ink 6 in the dusting chamber 5 adheres to the magnetized points of the intermediate carrier 1 at. The characters to be printed are accordingly on the intermediate carrier 1 by the magnetic printing ink

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shown. Compartment of the dusting chamber, the intermediate carrier with the printing ink representing the characters to be printed arrives in front of the sheet-shaped recording medium 7. If the intermediate carrier is advanced so far that all characters that are to be printed in a line on the sheet-shaped recording medium 7 are between this sheet-shaped recording medium and the have arrived opposite printing hammers 8, all of these characters are printed by the printing hammer 8 on the sheet-shaped recording medium 7 simultaneously while flying. In this case, imprint is to be understood as the actual impact of the printing hammer on the intermediate carrier 1 and thus the point in time at which the printing ink is transferred to the sheet-shaped recording medium 7. The approach movement of the individual print hammers 8, which takes significantly more time than the actual printing process, takes place beforehand. After the characters have been printed, the intermediate carrier is deflected around the roller 2 and guided to an erasing head 9. On this erase head, the magnetic on the. Intermediate carrier 1 erased characters recorded so that an IT re-magnetization of the intermediate carrier 1 by the write heads A can take place. The intermediate carrier is cleaned of residual printing ink by means of a cleaning brush 10, past which the intermediate carrier 1 is guided.

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The auxiliary electrode 11 required during printing on the back of the sheet-like recording medium 7 can Either consist of a permanent magnet or of wires connected to a voltage of approx. 6 kV. She holds during the hammer stop the printing ink either by magnetic or electrostatic force on the Paper tight. The line feed of the sheet-shaped recording medium 7, which is supplied by a paper supply roll 13 is withdrawn, takes place in the present case after each printing process by a toothed caterpillar 14, which is available for this purpose standing time span in which the intermediate carrier is advanced by one width of the recording medium, is sufficient for advancing the recording medium. With an oblique arrangement of the intermediate carrier 1 to the sheet-like Recording medium 7, the recording medium 7 can also be fed continuously. For fixation the printing ink on the sheet-shaped recording medium, it is necessary to place the recording medium in a heat source 15, which is shielded by a variable screen 16, pass by.

Pig. 2 shows a rapid printing device with which two hats 7> 7 'printed on / ground. The intermediate carrier 1 is through the write heads 4 according to the contour of the to be printed Sign magnetized. Then the

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Intermediate carrier in the pollination chamber 5 colored and then the characters formed by the printing ink are printed on the first recording medium 7. According to your print the remaining color is removed from the intermediate carrier 1 by a cleaning brush 10. The still magnetized The intermediate carrier is now colored a second time in the dusting chamber 5 'and in front of the second recording medium 7 'transported, to which in turn an imprint he follows. The color then remaining is removed from the intermediate carrier by a further cleaning brush 10 '. In addition, the magnetically recorded characters are erased again by the erase head 9, so that the Intermediate carrier 1 again for an Ifeumagnetisierung by the print heads 4- can be used. -

1 claim

2 figures

SQ9820 / 1044

Claims (1)

Claim Method for line-by-line recording of characters on a "sheet-shaped recording medium using an endless strip-shaped intermediate carrier on which the characters are transferred at one point by a recording element recorded one after the other and then line-by-line parallel to the sheet-like by means of impression organs Recording media are applied, characterized in that the received characters are applied by a recording member (4) recorded electromagnetically or electrostatically on an intermediate carrier (1) and that this intermediate carrier (1) on a plurality of sheet-shaped recording media (7, 7 ') in the line direction, is passed, with a coloring of the intermediate carrier (1) in front of each of the recording media (7, 7 ') takes place according to the shape of the magnetized characters, then the Parbzeichen on these leaf-shaped Recording media (7, 7 ') are applied with the aid of impression organs (8, 8') and then each time the intermediate carrier is cleaned of ink residues takes place. New documents itäUl ^ NrJtebSdeeXnderunoea & .vtQlQi