Method of washing a printing press with a washing apparatus

US5174209A · kind A · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Anton Rodi · Leimen, DE
• Hermann Beisel · Walldorf, DE
• Bernd Müller · Moers, DE

Key dates

• Filing date: Apr 26, 1991
• Grant date: Dec 29, 1992
• Expiry date: Apr 26, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F35/00
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A method of washing an offset printing press having a plate cylinder, a rubber blanket cylinder, an impression cylinder, an inking unit a paper thickness compensator and a damping unit. The inking unit and the damping unit include, respectively, inking rollers and damping solution applicator rollers. The offset printing press also includes a washing apparatus. The washing apparatus, when in the wash mode, is placed in engagement with the rubber blanket cylinder of the printing press by control apparatus. Also, in the wash mode, the impression cylinder is engaged with or disengaged from the rubber blanket cylinder by a paper thickness compensator. The usual purpose of the paper thickness compensator is to compensate for the thickness of the stock in running-on mode but is employed herein also to effectuate washing of various rollers and/or cylinders of the printing press.