DE410974C - Process for the production of printing plates for rubber printing and lithographic printing - Google Patents

Process for the production of printing plates for rubber printing and lithographic printing

Info

Publication number
DE410974C
DE410974C DEM77093D DEM0077093D DE410974C DE 410974 C DE410974 C DE 410974C DE M77093 D DEM77093 D DE M77093D DE M0077093 D DEM0077093 D DE M0077093D DE 410974 C DE410974 C DE 410974C
Authority
DE
Germany
Prior art keywords
printing
production
rubber
shellac
layer
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
DEM77093D
Other languages
German (de)
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.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
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 MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Priority to DEM77093D priority Critical patent/DE410974C/en
Application granted granted Critical
Publication of DE410974C publication Critical patent/DE410974C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/08—Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Printing Methods (AREA)

Description

Verfahren zur Herstellung von Druckformen für Gummidruck und lithographischen Druck. Die Text- und Bilddruckplatten für Guminidruck werden nach dem sogenannten Kopierverfahren in der Weise hergestellt, daß Text und Bild zunächst auf die mit einer lichtempfindlichen Schicht überzogene Zinkplatte kopiert werden. Die lichtempfindliche Schicht wird hierauf mit fetter Farbe eingewalzt und entwickelt, d. h. mit Wasser ausgewaschen. Beien Auswaschen werden die vom Licht nicht getroffenen Stellen der lichtempfindlicher Schicht im Wasser gelöst und entfernt. Bei einem bekanntenVerfahren dieser Art werden nun die auf diese Weise freigelegten Stellen, also diejenigen Stellen, die beim Drucken Farbe annehmen sollen, mit einer gegen Fett oder 1# al-he widerstandsfähigen Harz- oder Lackschicht, z. B. mit Schellack, überzogen, und zwar geschieht dies in der Weise, daß man die ganze Platte mit Schellack übergießt oder daß man den Schellack durch Auftupfen auf die Platte aufbringt. Bei den beiden Arten rles Aufbringens wird der Schellack sehr ungleichmäßig auf die Platte aufgetragen. Der Schellack wird an manchen Stellen in sehr dicker Schicht auf der fetten Druckfarbe lagern, so daß beidemnachfolgendenEntfernen der Farbschicht durch Übergießen mit einem Farblösungsmittel, z. B. Petroleum, dieses Lösungsmittel nicht durch die Schellackschicht hindurchdringt. Man hat dann oft große Mühe, die Farbschicht von dei- Platte zu entfernen. Außerdem geht bei beiden Verfahren des Aufbringens viel Schellack verloren.Process for the production of printing forms for rubber printing and lithographic printing Pressure. The text and image printing plates for rubber printing are made according to the so-called Copying process produced in such a way that text and image are initially copied with zinc plate coated with a photosensitive layer. The light sensitive The layer is then rolled in with bold paint and developed, i.e. H. with water washed out. When washed out, the areas not hit by the light become the light-sensitive layer dissolved in water and removed. In a known method the areas exposed in this way, i.e. those Areas that should take on color when printing, with one against bold or 1 # al-he resistant resin or lacquer layer, e.g. B. with shellac, coated, namely this is done in such a way that the whole plate is poured over with shellac or that one applies the shellac by dabbing on the plate. Both types When it is applied, the shellac is applied very unevenly to the plate. The shellac is in some places in a very thick layer on the bold printing ink store so that the subsequent removal of the paint layer by pouring over it a paint solvent, e.g. B. Petroleum, this solvent does not penetrate the shellac layer penetrates. It is then often very difficult to remove the layer of paint from the plate remove. In addition, a lot of shellac is lost in both methods of application.

Der Erfinder hat sich nun die Aufgabe gestellt, die Nachteile, die sich bei dem bekannten Verfahren des Aufbringens der Schellackschicht ergeben, zu vermeiden. Erfindungsgemäß wird die Schellacklösung durch Preßluft zerstäubt und auf die Druckplatte aufgespritzt.The inventor has now set himself the task of the disadvantages, the result in the known method of applying the shellac layer, too avoid. According to the invention, the shellac solution is atomized by compressed air and sprayed onto the printing plate.

Bei dem neuen Verfahren läßt sich die Dicke der Schicht genau regeln. Sie wird daher an keiner Stelle dicker ausfallen als man es gerade wünscht. Es geht daher nur wenig Schellack verloren und das Farblösungsmittel wird durch die dünne Schellackschicht leicht durchdringen, so daß die Entfernung der Farbe keine Schwierigkeiten bietet.With the new method, the thickness of the layer can be precisely regulated. It will therefore never be thicker than you would like it to be. It's going ok therefore little shellac is lost and the color solvent is thinned through Shellac layer easily penetrate, so that the removal of the paint is not difficult offers.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Druckformen für Gummidruck und lithographischen Druck, bei dem die druckenden Teile der Platte mit einer gegen Fett und Säuren widerstandsfähigen Harz- oder Lackschicht überzogen werden, dadurch gekennzeichnet, daß die Lacklösung durch Preßluft zerstäubt und ;auf die Druckplatte aufgespritzt wird. Claim: Process for the production of printing plates for rubber printing and lithographic printing, in which the printing parts of the plate are coated with a resin or lacquer layer resistant to grease and acids, characterized in that the lacquer solution is atomized by compressed air and sprayed onto the printing plate .
DEM77093D 1922-03-16 1922-03-17 Process for the production of printing plates for rubber printing and lithographic printing Expired DE410974C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM77093D DE410974C (en) 1922-03-16 1922-03-17 Process for the production of printing plates for rubber printing and lithographic printing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEM0077093 1922-03-16
DEM77093D DE410974C (en) 1922-03-16 1922-03-17 Process for the production of printing plates for rubber printing and lithographic printing

Publications (1)

Publication Number Publication Date
DE410974C true DE410974C (en) 1925-03-20

Family

ID=25988097

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM77093D Expired DE410974C (en) 1922-03-16 1922-03-17 Process for the production of printing plates for rubber printing and lithographic printing

Country Status (1)

Country Link
DE (1) DE410974C (en)

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