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US 5,490,459 AGranted
Printing press and method for removing ink build-up with sideways web movement
AssigneesHeidelberger Druckmaschinen AG, Heidelberg Harris, Inc.
InventorHoward W. Hoff
Life of this patent
Estimating the term…
Abstract
A web printing press and a method of reducing ink build-up on a printing cylinder of a web printing press are described. The web is moved sideways, either by web guides or by moving a web roll stand, during a printing cylinder wash operation to aid in removing ink build-up.
Claims9
A printing press having a running web comprising:
- a web roll stand for holding an end of the web in a wound state;
- at least one printing unit comprising a printing cylinder for printing images on the running web;
- an entry web guide between the web roll stand and the printing unit for guiding the web as it enters the printing unit;
- an exit web guide for guiding the web as it exits the printing unit;
- and
- a wash unit for cleaning the printing cylinder during a wash cycle;
- at least one of the entry web guide and the exit web guide being laterally moveable so as to be able to guide the web laterally during the wash cycle.
4 more elements
A printing press having a running web comprising:
- a web roll stand for holding the web in a wound state;
- at least one printing unit comprising a printing cylinder for printing images on the running web, the printing cylinder having lateral limits for the running web;
- an entry web guide between the web roll stand and the printing unit for guiding the web as it enters the printing unit;
- an exit web guide for guiding the web as it exits the printing unit;
- a wash unit for cleaning the printing cylinder during a wash cycle;
- and
- a folder;
- the web roll stand laterally moveable so as to allow the web to move against the lateral limits of the printing cylinder during the wash cycle.
5 more elements
Dependencies are inferred from the claim text.