Printing machine having a plurality of printing units for overprinting a plurality of inks in one pass

US6378431B1 · kind B1 · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventor

• Andreas Detmers · Heddesheim, DE

Key dates

• Filing date: Jan 18, 2000
• Grant date: Apr 30, 2002
• Expiry date: Jan 18, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41P2227/70
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A printing machine having a plurality of printing units for overprinting a plurality of inks in one pass, including a device for producing a printing form in each of the printing units, equipment for feeding to the device data for reproducing a printing image, and a tool responsive to the data for producing image points for accepting printing ink; a device for inking the printing forms and for transferring printing ink onto a printing material; and at least one computer for controlling imaging on the printing forms and for controlling the printing process, includes a first memory for storing data for a first printing image that is produced from overprinting a plurality of printing inks, the plurality of printing inks being at least equal to the plurality of printing units; a second memory for storing data for a second printing image that is produced from printing with a plurality of printing inks that is at most equal to a difference between the plurality of printing units and the plurality of printing inks used for printing first printing image; and a computer for effecting substantially simultaneous imaging on the printing forms for the first and the second printing images.