Methods for the compensation of a transverse elongation and/or longitudinal elongation of a printing material and printing press with several printing couples generating at least one printed image on a printing material

US7614343B2 · kind B2 · utility

Assignee

• KOENIG & BAUER AG · DE

Inventor

• Günther Oskar Eckert · Zellingen, DE

Key dates

• Filing date: Jan 21, 2005
• Grant date: Nov 10, 2009
• Expiry date: Oct 1, 2025

Classification

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

Abstract

At least one of a transverse elongation and a longitudinal elongation of a printing material are compensated for. The printing material passes through serially arranged printing couples in a printing press. A component of the transverse elongation is compensated for after passage of the printing material through a first printing couple and before its entry into a second printing couple. This can be accomplished by the use of a framing controller. Alternatively, this transverse elongation can be compensated for by the displacement of at least one printing form which is situated on a subsequent printing couple. The printing form can be displaced transverse to a production direction of the printing material, relative to a reference mark on the printing material. An elongation of the printing material, which is known at the time of image generation on a printing form of a subsequent printing couple can be compensated for by proper configuration or positioning of the printed image on the printing form.