Patent · US Expired

Laser beam-induced color printing

US5157412A · kind A · utility

43Cited by

3References

4Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Peter Kleinschmidt · Munich, DE
Gerhard Mader · Thalmässing, DE
Hans Meixner · Haar, DE

Key dates

Filing date	May 22, 1990
Grant date	Oct 20, 1992
Priority date	—
Expiry date	May 22, 2010

Classification

Technology area (CPC H)Electricity
CPC primaryH04N1/502
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Laser-induced color printing with means with which the printing color of a micro-capsule to be impinged by the laser beam (12) is identified. These means are a fluorescence transformer material as a constituent of the content of the micro-capsules (3) or an additional white light ray with which the printing color of an individual micro-capsule (3) can likewise be identified. The printing ensues given coincidence of a printing instruction provided for a defined location with color specification and of the momentary incidence of the scanning laser beam (12) on a micro-capsule (3) for which this printing color has been identified as being present.

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