Patent · US Expired

Image-recording device for a printing form having macrooptics of the offner type

US6661447B2 · kind B2 · utility

3Cited by

10References

13Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Martin Forrer · Sankt Gallen, CH
Hans-Joerg Heimbeck · Heerbrugg, CH
Eckhard Langenbach · Sankt Gallen, CH
Bernd Vosseler · Heidelberg, DE
Bernard Beier · Ladenburg, DE

Key dates

Filing date	Mar 27, 2002
Grant date	Dec 9, 2003
Priority date	—
Expiry date	Apr 22, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG03F7/70275
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An image-recording device for a printing form (29), including an array of light sources (12) and a downstream microoptics (14), which generates a virtual intermediate image (18) of the light sources (12), which is distinguished by the microoptics (14) having a downstream optical system (10) of a convex mirror (26) and of a concave mirror (24) having a common center of curvature, a combination of the Offner type, which produces a real image (28) of the virtual intermediate images (18). By employing a monolithic structure (40) of the optical system (10) of a convex mirror (26) and of a concave mirror (24), a more compact, space-saving design is able to achieved. The image-recording device according to the present invention may be utilized to special advantage for a printing form (29) in a plate-exposure unit or in a print unit of a printing press.

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