Patent · US Expired

Laser imaging with variable printing spot size

US6836282B2 · kind B2 · utility

2Cited by

9References

9Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Bernd Vosseler · Heidelberg, DE
Bernard Beier · Ladenburg, DE
Uwe Ernst · Mannheim, DE

Key dates

Filing date	Jul 23, 2001
Grant date	Dec 28, 2004
Priority date	—
Expiry date	Jul 23, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J2/47
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A device for spotwise imaging printing surfaces includes a laser light source producing at least one laser beam movable relative to a printing surface, the laser beam defining an image spot on the printing surface, the laser beam having a laser power. A laser control varies the laser power or an exposure time as a function of a distance of the laser light source from the image spot.

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