Method for regulating inking during printing operations of a printing press

US6119594A · kind A · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Helmut Kipphan · Schwetzingen, DE
• Wolfgang Geissler · Bad Schönborn, DE
• Gerhard Fischer · Offenbach, DE
• Werner Huber · Witzenhausen, DE
• Bernd Kistler · Eppingen, DE
• Gerhard Loeffler · Olsberg, DE
• Anton Rodi · Leimen, DE
• Harald Bucher · Eschelbronn, DE
• Clemens Rensch · Heidelberg, DE

Key dates

• Filing date: May 14, 1998
• Grant date: Sep 19, 2000
• Expiry date: May 14, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41P2233/51
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A method for regulating inking of a printing press. The method includes a first step of providing a picture taking device, a closed-loop control device, and a printed product having a surface with a printed image. A second step of printing a print control strip on the surface next to the printed image. A third step of deriving first picture signals from the print control strip and deriving second picture signals from the printed image with the picture taking device. A fourth step of using the closed-loop control device for deriving actual values representing inking of the print control strip from the first picture signals and comparing the actual values to desired values for deriving resultant comparison values. A fifth step of determining ink adjusting signals for controlling ink distribution devices from the resultant comparison values for varying inking of the print product until a desired value is reached during a printer tuning phase. A sixth step of generating an OK signal when the desired value is reached. A seventh step of using the closed-loop control device for deriving further actual values representing inking of the printed image from the second picture signals and comp…