Device for conveying ink or a damping agent

US4466347A · kind A · utility

Assignee

• MAN Roland Druckmaschinen AG · DE

Inventors

• Kurt Difflipp · Dietzenbach, DE
• Helmut Emrich · Offenbach am Main, DE
• Horst Erbach · Hofheim, DE
• Klaus Neberle · Heusenstamm, DE
• Heinrich Ochs · Koblenzer Straße, DE
• Gunter Schwebe · Großkrotzenburg, DE

Key dates

• Filing date: Jul 13, 1982
• Grant date: Aug 21, 1984
• Expiry date: Jul 13, 2002

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S101/32
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A fluid supply system for a lithographic printing press in which a fountain roller journalled in the frame of the press and driven at a slow speed is partially submerged so that a film of fluid is formed on its surface. A distributor roller is journalled in the frame parallel to the fountain roller and spaced therefrom to form a gap. A ductor roller movable broadwise in the gap is supported by a pair of arms which are, in turn, rigidly supported by a shaft journalled in the frame. A driving arm having a thrust rod connected thereto is rigidly secured to the shaft. The driving arm is coupled to a cam follower which engages a rotary cam so that upon rotation of the cam the shaft oscillates to swing the ductor roller back and forth for successive engagement of the fountain roller and the distributor roller to convey fluid therebetween. Opposed way surfaces are provided at the ends of the arms oriented generally perpendicular to the plane of the arms. Mounting blocks carrying the ends of the ductor roller are slidable on the way surfaces. Paired springs are provided on opposite sides of each of the mounting blocks in working opposition to one another so as to define a normal position o…