Patent · US Active

Light trap for UV radiation for curing ink on a printing substrate and printing machine including a light trap

US12377664B2 · kind B2 · utility

0Cited by

5References

9Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Bernard Beier · Ladenburg, DE
Silas Falter · Heddesbach, DE
Andreas Müller · Wadgassen, DE
Klaus-Dieter Scharf · Shipka, BG

Key dates

Filing date	Oct 25, 2023
Grant date	Aug 5, 2025
Priority date	—
Expiry date	Feb 9, 2044

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J11/00218
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A light trap for ultraviolet radiation for curing ink on a printing substrate contains a shaped body with more than two shape elements succeeding one another. The shaped body has a side facing the printing substrate and embodied to have step elements in a stepped arrangement as shape elements. Every step element contains a pair formed of a step surface and a riser, the step surfaces and the risers having different inclinations relative to the direction of transport. The step surfaces have a step length L and the riser has a step height H, and is characterized in that the following applies: L>2H. This provides an improved UV screen by use of the light trap while simultaneously simplifying the process of cleaning the light trap. This is preferably used in the process of printing and curing UV inks.

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