Patent · US Expired

Sheet-processing rotary printing press with a die cutting or punching unit, and method of operation

US6786148B2 · kind B2 · utility

2Cited by

6References

4Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Jens Friedrichs · Trochtelfingen, DE
Jens Hieronymus · Darmstadt, DE
Ralf Wadlinger · Hockenheim, DE

Key dates

Filing date	Mar 3, 2003
Grant date	Sep 7, 2004
Priority date	—
Expiry date	Mar 3, 2023

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41G7/00
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A method of operating a sheet-processing rotary printing press provided with a die cutting or punching unit and a delivery for forming processed sheets into a sheet pile or stack includes, in a first method step, moving the punching or die cutting unit, during production printing by the rotary printing press, from a first operating state of the unit wherein the sheets are punched or die cut, into a second operating state of the unit wherein the sheets are not punched or die cut as they pass the punching or die cutting unit, and after a given number of non-punched or non-die cut sheets have passed through the unit. In a second method step, the punching or die cutting unit is moved back into the first operating state thereof. The invention also includes a method of operating the printing press.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.