AT120436B - Device for printing off on rotogravure printing machines. - Google Patents

Device for printing off on rotogravure printing machines.

Info

Publication number
AT120436B
AT120436B AT120436DA AT120436B AT 120436 B AT120436 B AT 120436B AT 120436D A AT120436D A AT 120436DA AT 120436 B AT120436 B AT 120436B
Authority
AT
Austria
Prior art keywords
printing
cylinder
rotogravure
machines
way
Prior art date
Application number
Other languages
German (de)
Original Assignee
Maschf 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 Maschf Augsburg Nuernberg Ag filed Critical Maschf Augsburg Nuernberg Ag
Application granted granted Critical
Publication of AT120436B publication Critical patent/AT120436B/en

Links

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Vorrichtung zur Druckabstellung an Tiefdruckrotationsmaschinen. 



   Bei den bekannten Tiefdruckrotationsmaschinen ergibt sich ein erheblicher Nachteil dadurch, dass beim Abstellen des Druckzylinders vom Formzylinder die Papierbahn entspannt wird. Dieses Ab- 
 EMI1.1 
   farbendruckmaschinen   die Güte des Druckes in sehr störender Weise   beeinträchtigen.   Wenn die Maschine wieder   angelassen und der Druckwieder angestelltwird, so zeigt   es sich, dass sich   das Registerverschoben   hat. 



   Dieser Nachteil wird beim Gegenstand der Erfindung dadurch vermieden, dass bei der Bewegung, die   der Druckzylinder beim Abstellen des Druckes ausführt, einzweiter, diePapierbahn führender Maschinen-   teil in solcher Weise verstellt wird, dass die beim Drucken herrschende Spannung aufrechterhalten wird. Beispielsweise kann man diesen Spannungsausgleich in der Weise herbeiführen, dass man auf dem Druckzylinder einen zweiten Zylinder, über den die Papierbahn läuft, also etwa den   Trockenzylinder   oder den Kühlzylinder, in solcher Weise verstellt, dass die Papierbahn gespannt bleibt. Das Auftreten von Registerdifferenzen beim An-und Abstellen dess Druckzylinders wird hiedurch mit Sicherheit vermieden. 



   Die Zeichnung zeigt ein Ausführungsbeispiel der Erfindung. 



   Der Druckzylinder a und der Heizzylinder b sind beide in exzentrischen   Büchsen     c   und e gelagert, die durch Stangen e miteinander verbunden sind, so dass beim Anheben des Druckzylinders der Heizzylinder zwangläufig mitbewegt wird, u. zw. in solcher Weise, dass die Spannung der Papierbahn f die gleiche bleibt wie vorher. Statt des Heizzylinders a kann auch der Bildzylinder g abgefahren werden. 



   PATENT-ANSPRÜCHE :
1. Vorrichtung zum Abstellen des Druckes   anTiefdruckrotationsmasehinen, dadurch gekennzeichnet,   dass bei der Bewegung, die der Druckzylinder beim Abstellen des Druckes ausführt, ein zweiter die Papierbahn führender Maschinenteil in solcher Weise verstellt wird, dass die beim Drucken herrschende Spannung aufrecht erhalten wird. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Device for printing off on rotogravure printing machines.



   In the known rotogravure printing presses, there is a considerable disadvantage that the paper web is relaxed when the printing cylinder is set down from the forme cylinder. This Ab-
 EMI1.1
   color printing machines affect the quality of the print in a very disturbing way. When the machine is restarted and the pressure is restarted, it will appear that the register has shifted.



   This disadvantage is avoided in the subject matter of the invention in that, during the movement that the printing cylinder executes when the printing is switched off, a second machine part leading the paper web is adjusted in such a way that the tension prevailing during printing is maintained. For example, this tension compensation can be brought about by adjusting a second cylinder on the printing cylinder, over which the paper web runs, for example the drying cylinder or the cooling cylinder, in such a way that the paper web remains taut. The occurrence of register differences when the printing cylinder is switched on and off is thus definitely avoided.



   The drawing shows an embodiment of the invention.



   The pressure cylinder a and the heating cylinder b are both mounted in eccentric sleeves c and e which are connected to one another by rods e, so that when the pressure cylinder is lifted, the heating cylinder is inevitably moved along with it, u. zw. In such a way that the tension of the paper web f remains the same as before. Instead of the heating cylinder a, the image cylinder g can also be moved.



   PATENT CLAIMS:
1. A device for turning off the printing on rotogravure printing machines, characterized in that during the movement that the printing cylinder executes when the printing is turned off, a second machine part guiding the paper web is adjusted in such a way that the tension prevailing during printing is maintained.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sowohl der Druckzylinder, wie auch der zweite Abstellzylinder in exzentrischen Büchsen gelagert sind, die durch Stangen in solcher Weise gelenkig miteinander verbunden sind, dass beide Zylinder zwangläufig miteinander abgehoben werden. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Apparatus according to claim 1, characterized in that both the pressure cylinder and the second storage cylinder are mounted in eccentric bushings which are articulated to one another by rods in such a way that both cylinders are inevitably lifted together. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT120436D 1927-02-21 1928-01-25 Device for printing off on rotogravure printing machines. AT120436B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE120436X 1927-02-21

Publications (1)

Publication Number Publication Date
AT120436B true AT120436B (en) 1930-12-27

Family

ID=5656523

Family Applications (1)

Application Number Title Priority Date Filing Date
AT120436D AT120436B (en) 1927-02-21 1928-01-25 Device for printing off on rotogravure printing machines.

Country Status (1)

Country Link
AT (1) AT120436B (en)

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