Means for the control and regulation of the printing process on printing presses

US4200932A · kind A · utility

Assignee

• Roland Offsetmaschinenfabrik Faber & Schleicher AG

Inventors

• Peter Schramm · Erlangen, DE
• Siegfried Schuhmann
• Edgar F. Schoneberger · Seligenstadt, DE
• Alfred Dorn · Mühlheim, DE
• Bert Cappel · Mühlheim, DE

Key dates

• Filing date: Jun 8, 1978
• Grant date: Apr 29, 1980
• Expiry date: Jun 8, 1998

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F33/0045
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An automatic ink feed control for a printing machine. Several ink-dosing elements are arranged across the width of the printing machine for dosing the application of ink to a printing plate, and these ink-dosing elements are individually adjustable by an adjusting device. The ink density of several control areas on the printed material is measured by a scanning measuring device, and a computer control compares these measured ink densities to desired ink densities in order to effect control of the adjustment of the ink-dosing elements by the adjusting device.