Photopolymer film with UV filtering
US11046092B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2019 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Feb 13, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/2022
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of creating an image film negative capable of masking non-image areas of one or more layers of liquid photopolymer during a step of imagewise exposing the one or more layers of liquid photopolymer to actinic radiation. The method includes the steps of (a) providing an image film negative comprising a negative of an image on the image film negative, wherein the negative of the image comprises a pattern of opaque areas; and (b) inkjet printing a filtering layer on portions of the image film negative not covered by the pattern of opaque areas, wherein the portions of the image film negative comprise portions where it is desirable to modulate intensity of actinic radiation in a subsequent exposure step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.