AT108443B - Flat printing process. - Google Patents

Flat printing process.

Info

Publication number
AT108443B
AT108443B AT108443DA AT108443B AT 108443 B AT108443 B AT 108443B AT 108443D A AT108443D A AT 108443DA AT 108443 B AT108443 B AT 108443B
Authority
AT
Austria
Prior art keywords
printing process
flat printing
mixture
printing plate
printing
Prior art date
Application number
Other languages
German (de)
Inventor
Max Jaffe
Original Assignee
Max Jaffe
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 Max Jaffe filed Critical Max Jaffe
Application granted granted Critical
Publication of AT108443B publication Critical patent/AT108443B/en

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  • Printing Plates And Materials Therefor (AREA)

Description

  

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 schwemmung und Härtungsstoff, entfernt werden. Auf die gleiche Art wird auch bei Klatschen für   Farbendruck die K1atschfarbe entfernt.   



   Bei dem geschilderten Verfahren wird'das Plattenmaterial nicht angegriffen, und es vereinfacht sich daher die Art und Weise der Wiederverwendung gebrauchter Platten. Es genügt, die Druckfarbe mit Terpentin, Petroleum, Benzol od. dgl. zu entfernen und dann die Druckplatte, wenn sie aus Stein oder Zink besteht, mit Lauge, oder wenn sie aus Aluminium bEsteht, mit verdünnter   Schwefelsäure zu   behandeln. Das Neuschleifen des Steines oder das   Neukörnen   der Metallplatte wird erspart   ; Metall-   platten, deren Körnung durch Schaben stellenweise verlorengegangen ist oder durch oftmaligen Gebrauch stumpf geworden ist,   müssen   allerdings neu gekörnt werden. 



   PATENT-ANSPRÜCHE :
1. Flachdruckverfahren von lithographischem Stein. Metall usf., wobei die bereits die Zeichnung (Umdruck) tragende Druckplatte durch Behandlung mit einem nichtätzenden Mittel gegen die Aufnahme von Farbe an den von Zeichnung freien Stellen   geschützt   werden soll, dadurch   gekennzeichnet,   dass die Druckplatte aufeinanderfolgend mit zwei Mitteln behandelt wird, deren erstes einen an der Druckplatte festhaftenden Überzug erzeugt, der aber gleichzeitig auch einen Untergrund bildet, der das Festhaften der aus dem zweiten Mittel bestehenden Oberschicht gewährleistet, wobei für die Oberschicht eine Mischung eines im Wasser   aufgeschwemmten   Kolloids (z. B.

   Gummiarabikum, Agar-Agar, Dextrin od.   dgl.)   mit einem dieses härtenden oder   gerbenden   Stoff (Gallussäure, Chromsäure, Formaldehyd, Tannin od.   dgl.)   benutzt wird.



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 flooding and hardening agent, are removed. In the same way, if you clap for color printing, the clap color is removed.



   In the process described, the plate material is not attacked, and the way in which used plates can be reused is therefore simplified. It is sufficient to remove the printing ink with turpentine, petroleum, benzene or the like and then to treat the printing plate with lye if it is made of stone or zinc, or with dilute sulfuric acid if it is made of aluminum. There is no need to regrind the stone or re-grain the metal plate; Metal plates, the grain of which has been lost in places through scraping or has become dull through frequent use, must, however, be grained again.



   PATENT CLAIMS:
1. Planographic printing process of lithographic stone. Metal etc., whereby the printing plate already carrying the drawing (transfer printing) is to be protected against the absorption of ink in the areas free from drawing by treatment with a non-etching agent, characterized in that the printing plate is treated successively with two agents, the first of which creates a coating that adheres firmly to the printing plate, but at the same time also forms a substrate that ensures the adherence of the top layer consisting of the second agent, with a mixture of a colloid suspended in water (e.g.

   Gum arabic, agar-agar, dextrin or the like) is used with a substance (gallic acid, chromic acid, formaldehyde, tannin or the like) that hardens or tans it.

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass für die Zwischenschicht koaguliertes Albumin, eine Leim-oder Gelatinelösung, eine Mischung einer Kolloidaufschwemmung mit einem kieselsauren Salz (Wasserglas) od. dgl. verwendet wird. EMI2.2 Entfeinen der Schicht von der Druckplatte. 2. The method according to claim 1, characterized in that coagulated albumin, a glue or gelatin solution, a mixture of a colloid suspension with a silicic acid salt (water glass) or the like is used for the intermediate layer. EMI2.2 Define the layer from the printing plate. 4. Bei dem Verfahren nach Anspruch 1, die Verwendung der Mischung einer Kolloidaufsehwemmung mit einem hältenden oder gebenden Stoff zum Entfernen von Farbtönen oder Klatschfarbe von Stellen, die von der Zeichnung frei sind bzw. frei bleiben sollen. 4. In the method according to claim 1, the use of the mixture of a Kolloidaufsehwemmung with a holding or giving substance for removing hues or gossip color from places that are free from the drawing or should remain free.
AT108443D 1926-11-03 1926-11-03 Flat printing process. AT108443B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT108443T 1926-11-03

Publications (1)

Publication Number Publication Date
AT108443B true AT108443B (en) 1927-12-27

Family

ID=3625063

Family Applications (1)

Application Number Title Priority Date Filing Date
AT108443D AT108443B (en) 1926-11-03 1926-11-03 Flat printing process.

Country Status (1)

Country Link
AT (1) AT108443B (en)

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