Sensor based inking control for a printing press

US5014618A · kind A · utility

Assignee

• MAN Roland Druckmaschinen AG · DE

Inventors

• Oded Zingher · Alzenau, DE
• Arno Wuhrl · Mühlheim am Main, DE
• Ullrich Behrendt · Dreieich, DE
• Ralf Schafer · Marbach, DE
• Gunter Ziesing · Rodgau, DE

Key dates

• Filing date: Aug 30, 1989
• Grant date: May 14, 1991
• Expiry date: Aug 30, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S101/47
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A system and associated method for low cost image scanning and automatic ink adjustment control in a printing press. The system dispenses with automatically positioned densitometers and the system feedback which associates densitometer position with ink adjusters in the press. Instead, at the outset, image zones in a printed form are associated with ink zones on the press, as determined by the particular form being printed. The operator is then led to take manual densitometer readings of each image zone, and the system determines whether the reading is proper, whether it is within standards, and if the operator should advance to a reading of the next zone, so directs the operator.