Lithographic printing plate precursors and coating
US10012904B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 2014 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Oct 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/322
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A coating for use with a hydrophilic sheet substrate to form a lithographic printing plate precursor, including at least one Compound A silane compound and at least one Compound B phosphinic acid or organic derivative thereof. Compounds A and B experience a synergistic interaction which substantially increases adhesion to the substrate of areas imaged by radiation. The resulting plate is exhibits high on-press durability suitable for high volume commercial uses without a preheat step prior to development, even when imaged with lower levels of radiation such as violet lasers. A method of preparing a lithographic printing plate includes imagewise exposing the coating on a surface of a hydrophilic substrate to violet radiation and developing in an alkaline aqueous solution without preheating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.