Esko-Graphics Imaging GmbH

Germany

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B41N 1/14 - Lithographic printing foils 1
G03F 7/20 - Exposure; Apparatus therefor 1
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1.

SYSTEM AND METHOD FOR CONTROLLED EXPOSURE OF FLEXOGRAPHIC PRINTING PLATES

      
Document Number 03001473
Status In Force
Filing Date 2016-10-26
Open to Public Date 2017-05-04
Grant Date 2020-07-21
Owner ESKO-GRAPHICS IMAGING GMBH (Germany)
Inventor
  • Wolterink, Jorg
  • Hansel, Thomas
  • Sievers, Wolfgang

Abstract

A method and apparatus to expose photosensitive printing plates with a predetermined radiation density from the main side (top) and a predetermined radiation density from the back side (bottom). The method comprises executing the main exposure with a time delay after the back exposure. The time delay between back exposure and main exposure is optimized to create smaller stable single dot elements on the photosensitive printing plate after processing and smaller single element dot sizes printed on the print substrate.

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2.

COMBINED ABLATION AND EXPOSURE SYSTEM AND METHOD

      
Document Number 02556749
Status In Force
Filing Date 2005-02-24
Open to Public Date 2005-09-09
Grant Date 2013-01-29
Owner ESKO-GRAPHICS IMAGING GMBH (Germany)
Inventor
  • Hull, Frank A.
  • Horrisberger, Benn

Abstract

An exposure system (10, 30) at least partially surrounds a photopolymer on a rotating cylinder ablation system (20, 36). A light source assembly (12, 32) linearly follows an ablation source (22, 34) and operates to expose the ablated (masked) photopolymer with high intensity illumination to expose all points on the photopolymer. In one embodiment, the light source assembly employs at least one plasma capillary light source (18, 38A, 38B) configured to illuminate the photopolymer with high intensity light .

IPC Classes  ?