Patent · US Expired

Apparatus and method for regulating ink distribution in a printing machine

US5685225A · kind A · utility

3Cited by

2References

17Claims

0Family size

Assignee

MAN Roland Druckmaschinen AG · DE

Inventors

Valentin Gensheimer · Frankfurt am Main, DE
Achim Stoffler · Offenbach, DE
Peter Hummel · Offenbach, DE
Robert Ortner · Alzenau, DE

Key dates

Filing date	Aug 11, 1995
Grant date	Nov 11, 1997
Priority date	—
Expiry date	Aug 11, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S101/32
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An undershot inking unit for a printing machine and a method for regulating ink distribution in a printing machine are disclosed. The undershot inking unit comprises an ink fountain roller communicating with an ink fountain, an inking roller, and an intermittent ductor roller for transferring ink from the ink fountain roller to the inking roller. In accordance with the present invention, the ductor roller is thrown onto the ink fountain roller at a rate that is independent of the printing speed of the printing machine, preferably, at a rate that is constant for all printing speeds. The disclosed apparatus and method alleviate the problem of ink fall-off in printing machines.

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