Relief printing plate manufacture
US4927723A · kind A · utility
21Cited by
11References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1988 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | Jun 7, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/2022
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A relief flexographic printing plate is prepared by image-wise exposure of the "printing face" of a layer of photocurable polymer through a negative 7 and image-wise back exposure of the layer 4 through a support sheet 3 and a positive 6 of the image to be printed, thereby selectively curing the floor regions 9 of the printing plate in register with the uncured areas 8 left in the printing face of said layer. Preferably a further non-selective back exposure operation is carried out for additionally curing the floor regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.