Roller element for pressing a flexible printing plate onto the form cylinder

US5617792A · kind A · utility

Assignee

• MAN Roland Druckmaschinen AG · DE

Inventors

• Gunnar Rau · Königsbrunn, DE
• Albert Heller · Pestenacker, DE
• Michael Scholz · Thannhausen, DE
• Georg Kaessmair · Zusamzell, DE

Key dates

• Filing date: Nov 13, 1995
• Grant date: Apr 8, 1997
• Expiry date: Nov 13, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F27/1206
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A roller element for pressing a flexible printing plate against a form cylinder of a printing unit in a rotary printing machine during a first mode of winding the printing plate on the form cylinder and a second mode of unwinding the printing plate from the form cylinder. The roller element has at least one winding roller, a first device for positioning the at least one winding roller against the printing plate during the first mode of winding the printing plate on the form cylinder and for moving the at least one winding roller away from and out of contact with the printing plate during the second mode of unwinding the printing plate from the cylinder, at least one unwinding roller and a second device for positioning the at least one unwinding roller against the printing plate during the second mode of unwinding the printing plate from the form cylinder and for moving the at least one unwinding roller away from and out of contact with the printing plate during the first mode of winding the printing plate on the form cylinder.