Patent · US Expired

Gravure process for printing adjacent color surfaces with various color coating thicknesses

US7028615B2 · kind B2 · utility

2Cited by

12References

18Claims

0Family size

Assignee

GIESECKE & DEVRIENT GMBH · DE

Inventors

Karlheinz Mayer · Grünenbach, DE
Roger Adamczyk · Munich, DE
Eduard Wisjak · Vaterstetten, DE
Peter Franz · Mumpf, CH

Key dates

Filing date	May 3, 2005
Grant date	Apr 18, 2006
Priority date	—
Expiry date	May 3, 2025

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41N1/06
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A data medium having a printed image is created by the intaglio printing process. The printed image has at least one first ink area with a first ink layer thickness and at least one second ink area with a second ink layer thickness adjacent to the first ink area, such that the ink layer thicknesses are different. The first and second ink areas are separated by a sharp border line invisible on examination with the naked eye, and the ink layer thickness of both ink areas passes through a minimum in the region of the border line.

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