Method and a plate for digitally-imaged offset printing
US6899998B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 2000 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Mar 16, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/027
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An offset plate sensitive to UV or visible light, prepared simply and imaged digitally therewith in a CTP method, and also processed in a simple manner. The plate is provided as a photopolymer plate with increased sensitivity, and is used in a simple imaging-on-press system, using the surface of a lithographic printing cylinder itself as a plate substrate. The method of preparing the printing plate begins by applying a photosensitive liquid coating to the substrate, digitally imaging the coated substrate, using an actinic light source to polymerize portions of the liquid coating in accordance with the imaging, and washing the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.