Device for varnishing systems to prevent varnish drying in out of paper size side zones of rollers

US4480548A · kind A · utility

Assignee

• MAN Roland Druckmaschinen AG · DE

Inventors

• Herbert Rebel · Rodgau, DE
• Manfred Herold · Offenbach am Main, DE

Key dates

• Filing date: May 11, 1983
• Grant date: Nov 6, 1984
• Expiry date: May 11, 2003

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F23/08
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A roller cleaning device for a varnishing system in a printing press has liquid-supplying means pivotally arranged above the rollers conveying varnish. The spatial distribution of the liquid-supplying means differs over the length of the rollers. The liquid-supplying means are closer together in two edge zones than in the central zone; the liquid-supplying means in the central zone have nozzles that are spaced apart from one another at a relatively large interval. The liquid-supplying means come into operation at stopping and at the onset and cessation of printing. The liquid-supplying means in the edge zone operate, in accordance with format width, throughout printing.