Process for preparing a flexographic printing plate from a photopolymerizable element
US7754412B2 · kind B2 · utility
0Cited by
40References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2006 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Jan 31, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention relates to a photosensitive element for use as a flexographic printing plate and a process for preparing the plate from the element. The photosensitive element has at least one photopolymerizable elastomeric layer that comprises a binder, a monomer, a photoinitiator, an onium salt, and a leuco dye. Upon exposure to actinic radiation, the onium salt and leuco dye react resulting in a change of color in polymerized portions of the photopolymerizable layer. The color change provides enhanced image color contrast in the photosensitive element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.