Patent · US Expired

Method and printing unit for influencing lateral web spreading in particular in rotary presses

US7127991B2 · kind B2 · utility

1Cited by

18References

12Claims

0Family size

Assignee

MAN Roland Druckmaschinen AG · DE

Inventors

Eduard Hoffmann · Bobingen, DE
Christian Sameit · Augsburg, DE
Georg Schmid · Neuss, DE

Key dates

Filing date	Aug 4, 2004
Grant date	Oct 31, 2006
Priority date	—
Expiry date	Dec 9, 2024

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41F13/02
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A printing unit for influencing lateral web spreading in particular in rotary presses, which makes constant contact conditions possible across the width in the rubber-rubber nip and improves the lateral-register quality and the web run without using concave or convex blanket cylinders, has a blanket cylinder and plate cylinders which can be set against the former for printing on one or both sides of a web. The web passes through between the blanket cylinders in a contact zone, it either being possible to skew at least one of the blanket cylinders with respect to the respective plate cylinder or it being possible to skew at least one of the plate cylinders with respect to the respective blanket cylinder, for producing a concave velocity profile on the web.

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