DE830652C - Method and device for the production of screened offset printing plates while the image is being drawn - Google Patents

Method and device for the production of screened offset printing plates while the image is being drawn

Info

Publication number
DE830652C
DE830652C DE1950M0002599 DEM0002599A DE830652C DE 830652 C DE830652 C DE 830652C DE 1950M0002599 DE1950M0002599 DE 1950M0002599 DE M0002599 A DEM0002599 A DE M0002599A DE 830652 C DE830652 C DE 830652C
Authority
DE
Germany
Prior art keywords
paper
drawn
image
printing plates
screened
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE1950M0002599
Other languages
German (de)
Other versions
DE1635830U (en
Inventor
Rudolf Mueller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE1950M0002599 priority Critical patent/DE830652C/en
Application granted granted Critical
Publication of DE830652C publication Critical patent/DE830652C/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00Forme preparation
    • B41C1/10Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1091Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by physical transfer from a donor sheet having an uniform coating of lithographic material using thermal means as provided by a thermal head or a laser; by mechanical pressure, e.g. from a typewriter by electrical recording ribbon therefor

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Description

Zur Herstellung gerasterter wurde bisher zuerst der Bildentwurf hergestellt, dann das Bild auf fotochemischem Weg gerastert und schließlich auf :die Druckplatte übertragen.For the production of rastered images, the first picture was previously produced, then the image is rasterized in a photochemical way and finally onto: the printing plate transfer.

Nach dem erfindungsgemäßen Verfahren «erden diese drei Arbeitsgänge zusammengefaßt und die neue Arbeitsweise auch für Mehrfarbendrucke angewandt. Dabei wind folgendermaßen verfahren: Ein Bild wird mit Kreidestiften usw). entsprechend den Grundfarben auf ,geeignetes Papier gezeichnet. Es wird jeweils immer nur eine Farbe des Bildes, z. B. zuerst gell, gänzlich aufgetragen. Vorher legt man unter das Papier eine Druckplatte, dann Kohlepapier und ein geeignetes ;Gewebe, so daß durch die Gewebestruktur die auf das Papier aufgetragenen .gelben Farbflächen je nachdem mit dem Stift angewenideten Druck auf der ,Druckplatte als gerasterte Flächen mit mehr oder weniger dicken Punkten erscheinen. Dann wird auf das Papier die zweite Farbe des Bildes, z. B. rot, aufgetragen, wobei vorher eine andere Platte mit Kohlepapier und gleichem Gewebe untergelegt wird, die dann nur die roten Farbflächen in gerasterter Ausführung erhält. Genau so .wird mit Iden anderen Farben verfahren. Druckt man dann die so hergestellten Platten mit Druckfarben, die den angewendeten Farbstiften entsprechen, übereinander, so zeigt der Druck die gleiche Ausführung wie der mit Farbstiften auf das Papier ausgeführte Entwurf.According to the method according to the invention, these three operations are grounded summarized and the new way of working also applied to multicolor prints. Included wind proceed as follows: A picture is drawn with chalk pencils, etc.). corresponding the basic colors, drawn on suitable paper. There will be only one at a time Color of the picture, e.g. B. first gell, applied completely. Before you put under the paper a printing plate, then carbon paper and a suitable fabric so that the yellow colored areas applied to the paper due to the fabric structure after applying pressure with the pen on the pressure plate as rasterized areas appear with more or less thick points. Then the second is on the paper Color of the picture, e.g. B. red, applied, previously another plate with carbon paper and the same fabric is placed underneath, which then only the red colored areas in rasterized Execution receives. The same is done with the other colors. One prints then the plates produced in this way with printing inks that match the colored pencils used correspond, one on top of the other, the print shows the same design as the one with Color pencils on the paper executed design.

Dies setzt jedoch voraus, daß die Druckplatten genau aufeinander passen. Dies wird dadurch erreicht, daß ,der Zeichentisch a der Zeichnung durch einen Rahmen b umschlossen ist. Der Rahmen trägt das Zeichenpapier c, das in bekannter Weise, beispielsweise durch. Reißnägel, befestigt werden kann. Der Rahmen b ist durch Scharniere d o. .g1. schwenkbar am Tisch befestigt, damit die Druckplatte e, das-Kohlepapier f und das Gewebe g unter das auf den Rahmen gespannte Papier gelegt werden können. Der Zeichentisch besitzt Paßstifte h; in diese werden die entsprechend gelochten Druckplatten eingehängt. Die Lochung der Platten wird dann in der Druckmaschine in genaue Deckung zu entsprechenden Paßstellen gebracht, so daß beim Drucken die einzelnen Farben genau aufeinanderkommen und ein besonderes Einrichten nicht notwendig ist.However, this assumes that the printing plates fit exactly on one another. This is achieved in that the drawing table a of the drawing is enclosed by a frame b. The frame carries the drawing paper c, which in a known manner, for example by. Tacks, can be attached. The frame b is by hinges d o. .G1. pivotally attached to the table so that the printing plate e, carbon paper f and fabric g can be placed under the paper stretched on the frame. The drawing table has dowel pins h; The corresponding perforated pressure plates are hung in these. The perforation of the plates is then brought into exact congruence in the printing machine with the corresponding registration points, so that the individual colors come together exactly when printing and a special set-up is not necessary.

Claims (2)

PATENTANSPRÜCHE: r. Verfahren zurHerstellung gerasterterOffsetdruckplatten ,während des Zeichnens des Bildentwurfes, dadurch gekennzeichnet, daß beim Entwerfen der zu druckenden Bilder mittels Farbstiften o. .g1. auf Papier für jede Farbe eine Druckplatte, ein Kohlepapier und ein geeignetes Gewebe so unter das Papier gelegt werden, daß das Bild während des Zeichnens auf das Papier gleichzeitig auf die Druckplatte der Gewebestruktur entsprechend gerastert aufgetragen wird. PATENT CLAIMS: r. Process for the production of screened offset printing plates , during the drawing of the draft image, characterized in that during the drafting of the images to be printed using colored pencils or .g1. on paper one for each color The printing plate, a carbon paper and a suitable fabric are placed under the paper that the image is drawn onto the printing plate at the same time as it is drawn on the paper the tissue structure is applied in a raster pattern. 2. Vorrichtung zur Durchführung des ""ere-, nach Anspruch i, dadurch gekennzeichnet, daß zur genauen Passung der Farbteilbilder beim Drucken das Zeichenpapier auf einem, am Zeichentisch mittels Scharnieren o. d-1. schwenkbar befestigten Rahmen so aufgespannt ist. daß das Bild nach Schwenken des Rahmens zum Wechseln .der Unterlagen immer wieder auf die gleiche Stelle des Zeichentisches kommt. #3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß am Zeichentisch PaBstifte und in den Druckplatten den Paßstiften entsprechende Lochungen vorhanden sind.2. Device for implementation des "" ere-, according to claim i, characterized in that for an exact fit of the Color partial images when printing the drawing paper on a, at the drawing table means Hinges or d-1. pivotally attached frame is so stretched. that the picture after swiveling the frame to change the documents over and over again to the same Place of the drawing table. # 3. Device according to claim 2, characterized in that that dowel pins on the drawing table and corresponding dowel pins in the printing plates There are perforations.
DE1950M0002599 1950-03-30 1950-03-30 Method and device for the production of screened offset printing plates while the image is being drawn Expired DE830652C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1950M0002599 DE830652C (en) 1950-03-30 1950-03-30 Method and device for the production of screened offset printing plates while the image is being drawn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1950M0002599 DE830652C (en) 1950-03-30 1950-03-30 Method and device for the production of screened offset printing plates while the image is being drawn

Publications (1)

Publication Number Publication Date
DE830652C true DE830652C (en) 1952-02-07

Family

ID=7291773

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1950M0002599 Expired DE830652C (en) 1950-03-30 1950-03-30 Method and device for the production of screened offset printing plates while the image is being drawn

Country Status (1)

Country Link
DE (1) DE830652C (en)

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